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NSR database version of April 11, 2024.

Search: Author = M.Thoennessen

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2023KO15      Nature(London) 620, 965 (2023)

Y.Kondo, N.L.Achouri, H.Al Falou, L.Atar, T.Aumann, H.Baba, K.Boretzky, C.Caesar, D.Calvet, H.Chae, N.Chiga, A.Corsi, F.Delaunay, A.Delbart, Q.Deshayes, Zs.Dombradi, C.A.Douma, A.Ekstrom, Z.Elekes, C.Forssen, I.Gasparic, J.-M.Gheller, J.Gibelin, A.Gillibert, G.Hagen, M.N.Harakeh, A.Hirayama, C.R.Hoffman, M.Holl, A.Horvat, A.Horvath, J.W.Hwang, T.Isobe, W.G.Jiang, J.Kahlbow, N.Kalantar-Nayestanaki, S.Kawase, S.Kim, K.Kisamori, T.Kobayashi, D.Korper, S.Koyama, I.Kuti, V.Lapoux, S.Lindberg, F.M.Marques, S.Masuoka, J.Mayer, K.Miki, T.Murakami, M.Najafi, T.Nakamura, K.Nakano, N.Nakatsuka, T.Nilsson, A.Obertelli, K.Ogata, F.de Oliveira Santos, N.A.Orr, H.Otsu, T.Otsuka, T.Ozaki, V.Panin, T.Papenbrock, S.Paschalis, A.Revel, D.Rossi, A.T.Saito, T.Y.Saito, M.Sasano, H.Sato, Y.Satou, H.Scheit, F.Schindler, P.Schrock, M.Shikata, N.Shimizu, Y.Shimizu, H.Simon, D.Sohler, O.Sorlin, L.Stuhl, Z.H.Sun, S.Takeuchi, M.Tanaka, M.Thoennessen, H.Tornqvist, Y.Togano, T.Tomai, J.Tscheuschner, J.Tsubota, N.Tsunoda, T.Uesaka, Y.Utsuno, I.Vernon, H.Wang, Z.Yang, M.Yasuda, K.Yoneda, S.Yoshida

First observation of ²⁸O

NUCLEAR REACTIONS H(²⁹F, X)²⁷O/²⁸O, E=235 MeV/nucleon; measured reaction products; deduced yields. The hydrogen target was surrounded by the MINOS Time Projection Chamber, SAMURAI spectrometer, RIKEN RI Beam Factory.

RADIOACTIVITY ²⁸O(4n), ²⁷O(3n); measured decay products, En, In; deduced decay energy spectra and schemes from the measured momenta using the invariant-mass technique, resonance parameters. Comparison with the large-scale shell-model calculations using the new chiral effective field theory (EEdf3) interaction.

doi: 10.1038/s41586-023-06352-6
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2023TH03      Int.J.Mod.Phys. E32, 2330001 (2023)

M.Thoennessen

2022 Update of the discoveries of nuclides

COMPILATION ¹¹O, ³¹K, ⁶⁸Br, ¹⁶⁵Pt, ¹⁷⁰Hg, ²²⁰Np, ²¹¹Pa, ²²²Np, ²³⁵Cm, ²⁴⁴Md, ¹⁸Mg, ¹⁵⁰Yb, ²¹⁴U, ²⁴⁹No, ¹³F, ²⁸⁰Ds, ¹¹¹Y, ¹¹⁴Zr, ¹¹⁷Nb, ¹⁰⁶Rb, ¹⁰⁸Sr, ¹¹⁰Y, ¹⁰¹Br, ¹⁰²Kr, ¹⁰⁵Rb, ¹⁴⁹Lu, ³⁹Na, ²⁵¹Lr, ²⁰⁴Ac, ¹⁷⁰Eu, ¹⁷²Gd, ¹⁶⁶Pm, ¹⁶⁸Sm, ²⁶⁴Lr, ²⁰⁷Th, ¹⁴⁹Lu; compiled first identification (or discovery) of isotopes in 2019-2022.

doi: 10.1142/S0218301323300011
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2023WA18      Phys.Lett. B 843, 138038 (2023)

H.Wang, M.Yasuda, Y.Kondo, T.Nakamura, J.A.Tostevin, K.Ogata, T.Otsuka, A.Poves, N.Shimizu, K.Yoshida, N.L.Achouri, H.Al Falou, L.Atar, T.Aumann, H.Baba, K.Boretzky, C.Caesar, D.Calvet, H.Chae, N.Chiga, A.Corsi, H.L.Crawford, F.Delaunay, A.Delbart, Q.Deshayes, Zs.Dombradi, C.Douma, Z.Elekes, P.Fallon, I.Gasparic, J.-M.Gheller, J.Gibelin, A.Gillibert, M.N.Harakeh, A.Hirayama, C.R.Hoffman, M.Holl, A.Horvat, A.Horvath, J.W.Hwang, T.Isobe, J.Kahlbow, N.Kalantar-Nayestanaki, S.Kawase, S.Kim, K.Kisamori, T.Kobayashi, D.Korper, S.Koyama, I.Kuti, V.Lapoux, S.Lindberg, F.M.Marques, S.Masuoka, J.Mayer, K.Miki, T.Murakami, M.A.Najafi, K.Nakano, N.Nakatsuka, T.Nilsson, A.Obertelli, N.A.Orr, H.Otsu, T.Ozaki, V.Panin, S.Paschalis, A.Revel, D.Rossi, A.T.Saito, T.Saito, M.Sasano, H.Sato, Y.Satou, H.Scheit, F.Schindler, P.Schrock, M.Shikata, Y.Shimizu, H.Simon, D.Sohler, O.Sorlin, L.Stuhl, S.Takeuchi, M.Tanaka, M.Thoennessen, H.Tornqvist, Y.Togano, T.Tomai, J.Tscheuschner, J.Tsubota, T.Uesaka, Z.Yang, K.Yoneda

Intruder configurations in ²⁹Ne at the transition into the island of inversion: Detailed structure study of ²⁸Ne

NUCLEAR REACTIONS ¹H(²⁹Ne, np)²⁸Ne, E=240 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, partial level scheme, J, π, one-neutron removal σ, parallel momentum distributions. Comparison with available data. The MINOS target was surrounded by the DALI2 array, the Radioactive Isotope Beam Factory (RIBF), operated by the RIKEN Nishina Center and the Center for Nuclear Study, University of Tokyo.

doi: 10.1016/j.physletb.2023.138038
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2022KU08      Phys.Rev. C 105, 034314 (2022)

A.N.Kuchera, D.Bazin, T.Phan, J.A.Tostevin, M.Babo, T.Baumann, P.C.Bender, M.Bowry, J.Bradt, J.Brown, P.A.DeYoung, B.Elman, J.E.Finck, A.Gade, G.F.Grinyer, M.D.Jones, B.Longfellow, E.Lunderberg, T.H.Redpath, W.F.Rogers, K.Stiefel, M.Thoennessen, D.Votaw, D.Weisshaar, K.Whitmore, R.B.Wiringa

Mirror nucleon removal reactions in p-shell nuclei

NUCLEAR REACTIONS ⁹Be(⁷Li, ⁶He), (⁷Li, ⁶Li), (⁹Li, ⁸Li), (¹⁰Be, ⁹Li) E=80 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced partial σ to the individual final states of the daughter nuclei. Comparison to fully microscopic variational Monte Carlo (VMC) model calculations. Systematics of partial σ for nucleon removal reactions in mirror pairs. CAESAR array of 170 CsI(Te) scintillators. Secondaries beam produced in ⁹Be(¹⁶O, X), E=150 MeV/nucleon reaction and delivered to the target via A1900 fragment separator (NSCL-MSU).

doi: 10.1103/PhysRevC.105.034314
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2021CH47      Phys.Rev. C 104, 034313 (2021)

D.Chrisman, A.N.Kuchera, T.Baumann, A.Blake, B.A.Brown, J.Brown, C.Cochran, P.A.DeYoung, J.E.Finck, N.Frank, P.Gueye, H.Karrick, H.Liu, J.McDonaugh, T.Mix, B.Monteagudo, T.H.Redpath, W.F.Rogers, R.Seaton-Todd, A.Spyrou, K.Stiefel, M.Thoennessen, J.A.Tostevin, D.Votaw

Neutron-unbound states in ³¹Ne

NUCLEAR REACTIONS ⁹Be(³³Mg, X)³¹Ne, E=89 MeV/nucleon; measured reaction fragments and neutrons detected by the MoNa-LISA-Sweeper array at NSCL-MSU cyclotron facility; reconstructed decay energy for ³⁰Ne+n from invariant mass spectroscopy. ³¹Ne; deduced levels, neutron-unbound states from the two-body decay-energy spectrum. Comparison with shell-model calculations using FSU interaction within the NUSHELLX code, combined with two-proton knockout cross-section calculations using the eikonal reaction theory. Relevance to ³¹Ne being a prime example of a halo nucleus in the island of inversion.

doi: 10.1103/PhysRevC.104.034313
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2021TH01      Phys.Rev. A 103, 030001 (2021)

M.Thoennessen

Editorial: Eight Journals Introduce Letters

doi: 10.1103/PhysRevA.103.030001
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2021TH02      Phys.Rev. B 103, 090001 (2021)

M.Thoennessen

Editorial: Eight Journals Introduce Letters

doi: 10.1103/PhysRevB.103.090001
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2021TH03      Phys.Rev. C 103, 030001 (2021)

M.Thoennessen

Editorial: Eight Journals Introduce Letters

doi: 10.1103/PhysRevC.103.030001
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2021TH04      Phys.Rev. D 103, 060001 (2021)

M.Thoennessen

Editorial: Eight Journals Introduce Letters

doi: 10.1103/PhysRevD.103.060001
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2021TH05      Phys.Rev. E 103, 030001 (2021)

M.Thoennessen

Editorial: Eight Journals Introduce Letters

doi: 10.1103/PhysRevE.103.030001
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2021TH06      Phys. Rev. Res. 3, 010001 (2021)

M.Thoennessen

Editorial: Eight Journals Introduce Letters

doi: 10.1103/PhysRevResearch.3.010001
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2020VO08      Phys.Rev. C 102, 014325 (2020)

D.Votaw, P.A.DeYoung, T.Baumann, A.Blake, J.Boone, J.Brown, D.Chrisman, J.E.Finck, N.Frank, J.Gombas, P.Gueye, J.Hinnefeld, H.Karrick, A.N.Kuchera, H.Liu, B.Luther, F.Ndayisabye, M.Neal, J.Owens-Fryar, J.Pereira, C.Persch, T.Phan, T.Redpath, W.F.Rogers, S.Stephenson, K.Stiefel, C.Sword, A.Wantz, M.Thoennessen

Low-lying level structure of the neutron-unbound N=7 isotones

NUCLEAR REACTIONS ⁹Be(¹¹Be, ⁸He), (¹¹Be, ⁹Li), E=44 MeV/nucleon; ⁹Be(¹²B, ⁸He), (¹²B, ⁹Li), E=45 MeV/nucleon, [secondary ¹¹Be and ¹²B beams from ⁹Be(¹⁶O, X), E=120 MeV/nucleon, followed by separation of ions of interest using A1900 Fragment Separator at the Coupled Cyclotron Facility of NSCL-MSU]; measured E(n), I(n), charged-particles, (particle)n-coin using the MoNA-LISA detector array for neutron detection and cathode readout drift chambers (CRDCs) for charged particles; deduced decay energy spectra of ⁹He and ¹⁰Li and neutron-unbound states. ⁹He, ¹⁰Li; deduced levels, resonances, widths, J, π, l-values of neutrons from the resonances in ⁹He and ¹⁰Li. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.102.014325
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2019SW04      Phys.Rev. C 100, 034323 (2019)

C.Sword, J.Brett, T.Baumann, B.A.Brown, N.Frank, J.Herman, M.D.Jones, H.Karrick, A.N.Kuchera, M.Thoennessen, J.A.Tostevin, M.Tuttle-Timm, P.A.DeYoung

Observation of three-neutron sequential emission from ²⁵O^*

NUCLEAR REACTIONS ²H(²⁷Ne, 2p)²⁵O^*, E=101.3 MeV/nucleon, [secondary ²⁷Ne beam mixed with other light nuclei from fragmentation of 140 MeV/nucleon ⁴⁸Ca primary beam from the Coupled Cyclotron Facility, and separated by A1900 Fragment Separator at NSCL-MSU]; measured E(n), ²²O fragments, (²²O)n-coin, four-body (²²O+3n), three-body (²²O+2n), and two-body (²²O+1n) ungated and gated decay-energy and hit-multiplicity spectra using the Modular Neutron Array (MoNA) and Large multi-Institutional Scintillator Array (LISA); deduced mass of ²⁵O from the invariant of the sum of the energy-momentum four-vectors of an ²²O fragment and the three associated neutrons emitted from the excited states of ²⁵O. ²⁵O; deduced neutron-unbound levels, resonances, decay via three-neutron sequential emission to levels in ²⁴O, ²³O and ²²O. Comparison with shell-model and eikonal calculations for two-proton removal reaction from ²⁷Ne.

NUCLEAR STRUCTURE ^23,24,25O; calculated levels using Gamow shell model with the density-matrix renormalization-group (GSM-DMRG) method, and a continuum shell model (CSM). Comparison with experimental data.

doi: 10.1103/PhysRevC.100.034323
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2019TH02      Int.J.Mod.Phys. E28, 1930002 (2019)

M.Thoennessen

2018 update of the discoveries of nuclides

COMPILATION ¹⁶¹Pr, ¹⁶³Nd, ^164,165Pm, ¹⁶⁷Sm, ¹⁶⁹Eu, ¹⁷¹Gd, ^173,174Tb, ^175,176Dy, ^177,178Ho, ^179,180Er, ¹⁷⁸Ho, ^179,180Er, ¹⁰⁴Rb, ¹¹³Zr, ¹¹⁶Nb, ¹¹⁹Mo, ¹²²Tc, ¹²⁵Ru, ¹²⁸Rh, ^130,131Pd, ¹⁴⁰Sn, ¹⁴²Sb, ¹⁴⁵Te, ^146,147I, ^149,150Xe, ¹³⁷La, ^219,224Np, ⁴⁷P, ⁴⁹S, ⁵²Cl, ⁵⁴Ar, ⁵⁷K, ^59,60Ca, ⁶²Sc, ⁵⁹K, ^28,30Cl, ²⁹Ar, ¹⁰⁴Te, ¹⁰⁸Xe, ^20,21B; compiled first identification (or discovery) of isotopes.

doi: 10.1142/S0218301319300029
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2018DI09      Phys.Rev. C 98, 024306 (2018)

D.A.Divaratne, C.R.Brune, H.N.Attanayake, T.Baumann, D.Bazin, A.Gade, S.M.Grimes, P.M.King, M.Thoennessen, J.A.Tostevin

One- and two-neutron removal cross sections of ²⁴O

NUCLEAR REACTIONS ⁹Be(²⁴O, ²³O), (²⁴O, ²²O), E=92.3 MeV/nucleon, [secondary ²⁴O beam from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon primary reaction, and using A1900 fragment separator at NSCL-MSU]; measured reaction products using S800 magnetic spectrograph, time of flight, parallel momentum distributions, and inclusive σ for one- and two-neutron removals. ^22,23O; deduced levels, J, π, spectroscopic factors. ²⁴O; deduced spherical, doubly-magic structure. Comparison with eikonal reaction model plus shell model calculations using USD-B interaction and the sd model space.

doi: 10.1103/PhysRevC.98.024306
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2354. Data from this article have been entered in the XUNDL database. For more information, click here.

2018TA17      Phys.Rev.Lett. 121, 022501 (2018)

O.B.Tarasov, D.S.Ahn, D.Bazin, N.Fukuda, A.Gade, M.Hausmann, N.Inabe, S.Ishikawa, N.Iwasa, K.Kawata, T.Komatsubara, T.Kubo, K.Kusaka, D.J.Morrissey, M.Ohtake, H.Otsu, M.Portillo, T.Sakakibara, H.Sakurai, H.Sato, B.M.Sherrill, Y.Shimizu, A.Stolz, T.Sumikama, H.Suzuki, H.Takeda, M.Thoennessen, H.Ueno, Y.Yanagisawa, K.Yoshida

Discovery of ⁶⁰Ca and Implications For the Stability of ⁷⁰Ca

NUCLEAR REACTIONS ⁹Be(⁷⁰Zn, X)⁴⁷P/⁴⁹S/⁵²Cl/⁵⁴Ar/⁵⁷K/⁵⁹Ca/⁶⁰Ca/⁶²Sc, E=345 MeV/nucleon; measured reaction products. ⁵⁹K; deduced new isotopes discovery. Comparison with the drip-line predictions of a wide variety of mass models.

doi: 10.1103/physrevlett.121.022501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2586. Data from this article have been entered in the XUNDL database. For more information, click here.

2018TH01      Int.J.Mod.Phys. E27, 1830002 (2018)

M.Thoennessen

2017 update of the discoveries of nuclides

COMPILATION ⁷³Mn, ⁷⁶Fe, ⁷⁸Co, ^81,82Ni, ⁸³Cu, ^149,150,151Cs, ¹⁵⁴Ba, ^154,155,156La, ^156,157,158Ce, ^{156,157,158,159,160}Pr, ¹⁶²Nd, ¹⁶⁶Sm, ²³⁶Bk, ²⁴⁰Es, ^81,82Mo, ^85,86Ru, ²²³Np, ⁷⁷Zr, ⁷²Rb, ¹⁷Na; compiled first identification (or discovery) of isotopes.

doi: 10.1142/S0218301318300023
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2017JO06      Phys.Rev. C 95, 044323 (2017), Erratum Phys.Rev. C 96, 059902 (2017)

M.D.Jones, T.Baumann, J.Brett, J.Bullaro, P.A.DeYoung, J.E.Finck, N.Frank, K.Hammerton, J.Hinnefeld, Z.Kohley, A.N.Kuchera, J.Pereira, A.Rabeh, J.K.Smith, A.Spyrou, S.L.Stephenson, K.Stiefel, M.Tuttle-Timm, R.G.T.Zegers, M.Thoennessen

Neutron-unbound excited states of ²³N

NUCLEAR REACTIONS ²H(²⁴O, p)²³N, E=83.4 MeV/nucleon, [secondary ²⁴O beam from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon primary reaction at NSCL-MSU accelerator facility]; measured reaction products and identified via ΔE vs. time-of-flight measurement, neutron spectra from the decay of ²³N excited states using MONA and LISA arrays of plastic scintillators; analyzed two-body decay energy spectrum for ²²N+1n. ²³N; deduced levels above S(n), J, π, S(n), S(2n), configurations; calculated levels, J, π using shell-model and several interactions.

doi: 10.1103/PhysRevC.95.044323
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2017JO12      Phys.Rev. C 96, 054322 (2017)

M.D.Jones, K.Fossez, T.Baumann, P.A.DeYoung, J.E.Finck, N.Frank, A.N.Kuchera, N.Michel, W.Nazarewicz, J.Rotureau, J.K.Smith, S.L.Stephenson, K.Stiefel, M.Thoennessen, R.G.T.Zegers

Search for excited states in ²⁵O

NUCLEAR REACTIONS ²H(²⁴O, ²⁵O), E=83.4 MeV/nucleon, [secondary ²⁴O beam from ⁹Be(⁴⁸Ca, X) primary reaction using A1900 fragment separator at NSCL-MSU facility]; measured ²⁴O particles by a position and energy sensitive charged particle detector and separated based on energy loss and time-of-flight, and neutrons from ²⁵O decay by the MoNA-LISA detector array. ²⁵O; deduced two-body (²⁴O+n) decay energy spectrum by invariant-mass spectroscopy technique, neutron-unbound ground state, L-transfer, asymptotic normalization coefficients, cross section and width of a possible 1/2+ resonance above the ground state. Comparisons with previous experimental results, and with theoretical calculations using complex-energy Gamow Shell Model (GSM) and Density Matrix Renormalization Group (DMRG) method with a finite-range two-body interaction.

NUCLEAR STRUCTURE ^{23,24,25,26,27,28}O; calculated levels, J, π using complex-energy Gamow Shell Model (GSM) and Density Matrix Renormalization Group (DMRG) method with a finite-range two-body interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.96.054322
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Data from this article have been entered in the XUNDL database. For more information, click here.

2017TH03      Int.J.Mod.Phys. E26, 1730003 (2017)

M.Thoennessen

2016 Update of the discoveries of nuclides

COMPILATION ⁴NN, ⁹⁶In, ⁹⁴Cd, ⁹²Ag, ⁹⁰Pd, ⁶³Se, ^67,68Kr, ¹⁷⁸Pb, ²³⁰Am, ²³⁴Cm, ²³⁴Bk; compiled first identification (or discovery) of isotopes.

doi: 10.1142/S021830131730003X
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2016SM03      Nucl.Phys. A955, 27 (2016)

J.K.Smith, T.Baumann, D.Bazin, J.Brown, P.A.DeYoung, N.Frank, M.D.Jones, Z.Kohley, B.Luther, B.Marks, A.Spyrou, S.L.Stephenson, M.Thoennessen, A.Volya

Neutron correlations in the decay of the first excited state of ¹¹Li

NUCLEAR REACTIONS ⁹Be(¹³B, ¹¹Li), E=71 MeV/nucleon; measured charged fragments using Sweeper high-field dipole magnet, En, In using MoNA-LISA array of plastic scintillators; deduced unnormalized three- and two-body ¹¹Li-decay energy spectrum, ¹⁰Li resonances energy, width; calculated, simulated decay energy spectra, coincident energy spectra.

doi: 10.1016/j.nuclphysa.2016.05.023
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Data from this article have been entered in the XUNDL database. For more information, click here.

2016TH03      Int.J.Mod.Phys. E25, 1630004 (2016)

M.Thoennessen

2015 Update of the discoveries of nuclides

COMPILATION ¹¹⁸Mo, ¹²¹Tc, ¹²⁷Rh, ¹²⁹Pd, ¹³²Ag, ¹³⁴Cd, ^136,137In, ¹³⁹Sn, ¹⁴¹Sb, ¹⁴⁴Te, ²¹⁶U, ^223,229Am, ²³³Bk, ⁵⁹Ge, ²²¹U, ²⁹Cl, ³⁰Ar, ²⁸⁴Fl; compiled first identification (or discovery) of isotopes.

doi: 10.1142/S0218301316300046
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2015JO05      Phys.Rev. C 91, 044312 (2015)

M.D.Jones, Z.Kohley, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, R.A.Haring-Kaye, A.N.Kuchera, B.Luther, S.Mosby, J.K.Smith, J.Snyder, A.Spyrou, S.L.Stephenson, M.Thoennessen

Further insights into the reaction ¹⁴Be(CH₂, X)¹⁰He

NUCLEAR REACTIONS ²H(¹⁴Be, ¹⁰He), (¹⁴Be, ¹²He), E=59 MeV/nucleon, [¹⁴Be secondary beam from ⁹Be(¹⁸O, X), E=120 MeV/nucleon primary reaction using A1900 fragment separator]; measured particle spectra by ΔE-E detectors and neutron spectra by MONA array at NSCL-MSU facility; analyzed decay energy spectra and multiplicity distributions for ⁸He+n, ⁸He+2n ⁸He+4n, and ⁸He+2n with α removal. ¹⁰He; deduced resonance, no evidence for initial state effects based on the halo structure of the initial ¹⁴Be assuming a direct α-particle removal reaction. ¹²He; deduced no evidence for the existence of a low-lying (≤1 MeV) resonance in ¹²He.

doi: 10.1103/PhysRevC.91.044312
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Data from this article have been entered in the XUNDL database. For more information, click here.

2015JO14      Phys.Rev. C 92, 051306 (2015)

M.D.Jones, N.Frank, T.Baumann, J.Brett, J.Bullaro, P.A.DeYoung, J.E.Finck, K.Hammerton, J.Hinnefeld, Z.Kohley, A.N.Kuchera, J.Pereira, A.Rabeh, W.F.Rogers, J.K.Smith, A.Spyrou, S.L.Stephenson, K.Stiefel, M.Tuttle-Timm, R.G.T.Zegers, M.Thoennessen

Two-neutron sequential decay of ²⁴O

NUCLEAR REACTIONS ²H(²⁴O, 2n²²O), E=83.4 MeV/nucleon, [²⁴O secondary beam from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon primary reaction at NSCL-MSU]; measured charged-particle spectra using position- and energy-sensitive detectors, E(n) and I(n) using MONA-LISA array, three-body decay energy, angular correlations. ²⁴O; deduced level, resonance, l-transfer, width, evidence for two-neutron sequential decay from resonant state. ²³O; deduced intermediate level, J, π through one-neutron decay of ²⁴O resonant state. Comparison with di-neutron and phase-space model calculations for the three-body breakup.

doi: 10.1103/PhysRevC.92.051306
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2015KO08      Phys.Rev. C 91, 034323 (2015)

Z.Kohley, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, B.Luther, E.Lunderberg, M.Jones, S.Mosby, J.K.Smith, A.Spyrou, M.Thoennessen

Three-body correlations in the ground-state decay of ²⁶O

NUCLEAR REACTIONS ⁹Be(²⁷F, ²⁶O), E=82 MeV/nucleon, [²⁷F secondary beam produced from projectile fragmentation of a 140 MeV/nucleon ⁴⁸Ca primary beam]; measured (²⁴O)nn-triple coin, three-body decay energy and angular correlations using MoNA-Sweeper setup at NSCL-MSU; deduced invariant mass and three-body correlations from the ²⁶O ground-state resonance decay. Comparison with Monte-Carlo simulations using a phase-space, model, dineutron model, and three-body decay model. ²⁶O; deduced 1σ upper limit of the ground-state resonance energy of ²⁶O.

doi: 10.1103/PhysRevC.91.034323
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Data from this article have been entered in the XUNDL database. For more information, click here.

2015KU04      Phys.Rev. C 91, 017304 (2015)

A.N.Kuchera, A.Spyrou, J.K.Smith, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, M.D.Jones, Z.Kohley, S.Mosby, W.A.Peters, M.Thoennessen

Search for unbound ¹⁵Be states in the 3n+ ¹²Be channel

NUCLEAR REACTIONS ⁹Be(¹⁷C, ¹⁵Be), E=55 MeV/nucleon, [¹⁷C secondary beam from ⁹Be(²²Ne, X) primary reaction]; measured particle spectra, (¹²Be)n-coin using MONA array at NSCL-MSU facility; reconstructed two-, three-, and four-body decay energies of the ¹²Be+ neutron system using invariant mass spectroscopy. ¹⁵Be; search for predicted unbound 3/2+ level proved inconclusive. In the best fit analysis, ¹⁵Be g.s. is unbound with respect to ¹²Be.

doi: 10.1103/PhysRevC.91.017304
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Data from this article have been entered in the XUNDL database. For more information, click here.

2015MA62      Phys.Rev. C 92, 054320 (2015)

B.R.Marks, P.A.DeYoung, J.K.Smith, T.Baumann, J.Brown, N.Frank, J.Hinnefeld, M.Hoffman, M.D.Jones, Z.Kohley, A.N.Kuchera, B.Luther, A.Spyrou, S.Stephenson, C.Sullivan, M.Thoennessen, N.Viscariello, S.J.Williams

Population of ¹³Be in a nucleon exchange reaction

NUCLEAR REACTIONS ⁹Be(¹³B, ¹³Be), E=71 MeV/nucleon, [secondary ¹³B beam from ⁹Be(¹⁸O, X), E=120 MeV/nucleon primary reaction]; measured E(n), I(n) from the decay of ¹³Be into ¹²B+n, decay energy spectrum reconstructed by invariant-mass method using A1900 fragment separator and MoNA-LISA array at NSCL-MSU. Nucleon (-1p, +1n) exchange reaction. ¹³Be; deduced levels, resonances, J, π, widths, relative populations. Comparison with previous experimental data.

doi: 10.1103/PhysRevC.92.054320
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2204. Data from this article have been entered in the XUNDL database. For more information, click here.

2015RO16      Phys.Rev. C 92, 034316 (2015)

W.F.Rogers, S.Garrett, A.Grovom, R.E.Anthony, A.Aulie, A.Barker, T.Baumann, J.J.Brett, J.Brown, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, A.Hamann, R.A.Haring-Kaye, J.Hinnefeld, A.R.Howe, N.T.Islam, M.D.Jones, A.N.Kuchera, J.Kwiatkowski, E.M.Lunderberg, B.Luther, D.A.Meyer, S.Mosby, A.Palmisano, R.Parkhurst, A.Peters, J.Smith, J.Snyder, A.Spyrou, S.L.Stephenson, M.Strongman, B.Sutherland, N.E.Taylor, M.Thoennessen

Unbound excited states of the N=16 closed shell nucleus ²⁴O

NUCLEAR REACTIONS ⁹Be(²⁶F, ²⁴O), E=76 MeV/nucleon, [secondary ²⁶F beam from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon primary reaction]; measured charged-particle spectra, E(n), I(n), (²³O)n-coin using MONA-LISA array at NSCL-MSU. ²⁴O; deduced decay energy spectrum, levels, J, π, difference between the first 2+ and 1+ states. Comparison with previous experimental results and theoretical calculations.

doi: 10.1103/PhysRevC.92.034316
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2015SM02      Nucl.Phys. A940, 235 (2015)

J.K.Smith, T.Baumann, J.Brown, P.A.DeYoung, N.Frank, J.Hinnefeld, Z.Kohley, B.Luther, B.Marks, A.Spyrou, S.L.Stephenson, M.Thoennessen, S.J.Williams

Selective population of unbound states in ¹⁰Li

NUCLEAR REACTIONS ⁹Be(¹²B, 2p), E=71 MeV/nucleon. ¹⁰Li measured halo nucleus decay to ⁹Li plus neutron; calculated one-state and three-state decay; deduced resonances.

doi: 10.1016/j.nuclphysa.2015.04.011
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2015TH03      Int.J.Mod.Phys. E24, 1530002 (2015)

M.Thoennessen

2014 update of the discoveries of nuclides

COMPILATION ^81,82Mo, ^85,86Ru, ¹⁵⁶Pr, ¹²⁶Nd, ¹³⁶Gd, ¹³⁸Tb, ¹⁴³Ho, ¹⁴⁴Tm, ¹⁵⁰Yb, ¹⁵³Hf, ^235,243Cm, ^234,252,253Bk, ²⁶²No, ^261,262Lr, ²⁵⁵Db; compiled first identification (or discovery) of isotopes.

doi: 10.1142/S0218301315300027
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2015TH05      Pramana 85, 457 (2015)

M.Thoennessen

Discoveries of isotopes by fission

doi: 10.1007/s12043-015-1064-y
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2014SM03      Phys.Rev. C 90, 024309 (2014)

J.K.Smith, T.Baumann, D.Bazin, J.Brown, S.Casarotto, P.A.DeYoung, N.Frank, J.Hinnefeld, M.Hoffman, M.D.Jones, Z.Kohley, B.Luther, B.Marks, N.Smith, J.Snyder, A.Spyrou, S.L.Stephenson, M.Thoennessen, N.Viscariello, S.J.Williams

Low-lying neutron unbound states in ¹²Be

NUCLEAR REACTIONS ⁹Be(¹³B, ¹²Be), E=71 MeV/nucleon, [secondary ¹³B beam from ⁹Be(¹⁸O, X), E=120 MeV/nucleon primary reaction; measured particle and neutron spectra, (¹²Be)n-, (¹¹Be)2n-coin using A1900 fragment separator and MoNA-LISA array for neutron and fragment detection at NSCL-MSU facility. ¹²Be; deduced decay energy, level energy, resonance, L-value, J, π, width, one-neutron decay, no evidence for the 2n-decay channel to ¹⁰Be. Comparison with previous experimental results, and with continuum shell model calculation.

doi: 10.1103/PhysRevC.90.024309
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2014TH03      Int.J.Mod.Phys. E23, 1430002 (2014)

M.Thoennessen

2013 update of the discoveries of nuclides

COMPILATION ^81,82Mo, ^85,86Ru, ¹⁵⁶Pr, ¹²⁶Nd, ¹³⁶Gd, ¹³⁸Tb, ¹⁴³Ho, ¹⁴⁴Tm, ¹⁵⁰Yb, ¹⁵³Hf, ¹⁶⁴Ir, ²³⁰At, ²³²Rn, ^234,235Cm, ^234,252,253Bk, ²⁶²No, ^261,262Lr, ²⁵⁵Db; compiled first identification (or discovery) of isotopes.

doi: 10.1142/S0218301314300021
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2014TH04      Nucl.Data Sheets 118, 85 (2014)

M.Thoennessen

Exploring New Neutron-rich Nuclei with the Facility for Rare Isotope Beams

doi: 10.1016/j.nds.2014.04.008
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2014VO05      Phys.Rev. C 90, 014301 (2014)

P.Voss, T.Baumann, D.Bazin, A.Dewald, H.Iwasaki, D.Miller, A.Ratkiewicz, A.Spyrou, K.Starosta, M.Thoennessen, C.Vaman, J.A.Tostevin

¹⁹Mg two-proton decay lifetime

RADIOACTIVITY ¹⁹Mg(2p)[from ⁹Be(²⁰Mg, X), E=170 MeV/nucleon]; measured energy-loss spectra in coincidence with incoming ²⁰Mg on the target and outgoing ¹⁷Ne, two-proton decay half-life as a function of ¹⁷Ne production mechanism. Experiments carried out at NSCL-MSU facility. Comparison with previous experimental results.

NUCLEAR REACTIONS ⁹Be(²⁰Mg, X)¹⁰C/¹⁴O/¹⁶O/¹⁷Ne/¹⁸Ne/²⁰Na/¹⁹Mg/²⁰Mg/²¹Mg/, E=170 MeV/nucleon; measured reaction products, yields using A1900 separator and S800 magnetic spectrograph at NSCL-MSU facility.

doi: 10.1103/PhysRevC.90.014301
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2013BI14      Phys.Rev. C 88, 067301 (2013)

M.Birch, J.Flegenheimer, Z.Schaedig, B.Singh, M.Thoennessen

Reexamining the half-lives of ¹⁹⁵Os and ¹⁹⁵Ir paper 067301

RADIOACTIVITY ¹⁹⁵Os, ¹⁹⁵Ir(β^-); analyzed decay curves from previous experiments; deduced half-lives of ground states of ¹⁹⁵Os and ¹⁹⁵Ir; reaffirmed identification of ¹⁹⁵Os isotope in 1957 work.

doi: 10.1103/PhysRevC.88.067301
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2013FR02      At.Data Nucl.Data Tables 99, 96 (2013)

C.Fry, M.Thoennessen

Discovery of isotopes of the transuranium elements with 93 ≤ Z ≤ 98

COMPILATION ^{225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244}Np, ^{228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247}Pu, ^{232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247}Am, ^{237,238,239,240,241,242,243,244,245,246,247,248,249,250,251}Cm, ^{238,239,240,241,242,243,244,245,246,247,248,249,250,251}Bk, ^{237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256}Cf; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2012.04.001
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2013FR03      At.Data Nucl.Data Tables 99, 345 (2013)

C.Fry, M.Thoennessen

Discovery of actinium, thorium, protactinium, and uranium isotopes

COMPILATION ^{206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236}Ac, ^{208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238}Th, ^{212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239}Pa, ^{217,218,219,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,242}U; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2012.03.002
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2013FR04      At.Data Nucl.Data Tables 99, 365 (2013)

C.Fry, M.Thoennessen

Discovery of the thallium, lead, bismuth, and polonium isotopes

COMPILATION ^{176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217}Tl, ^{179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220}Pb, ^{184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224}Bi, ^{186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227}Po;compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2012.01.005
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2013FR09      At.Data Nucl.Data Tables 99, 497 (2013)

C.Fry, M.Thoennessen

Discovery of the astatine, radon, francium, and radium isotopes

COMPILATION ^{191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229}At, ^{193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231}Rn, ^{199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233}Fr, ^{201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234}Ra; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2012.05.003
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2013FR10      At.Data Nucl.Data Tables 99, 520 (2013)

C.Fry, M.Thoennessen

Discovery of dysprosium, holmium, erbium, thulium, and ytterbium isotopes

COMPILATION ^{139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169}Dy, ^{140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172}Ho, ^{144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175}Er, ^{145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177}Tm, ^{149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180}Yb; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2012.05.004
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2013IZ01      Phys.Rev. C 88, 065808 (2013)

R.Izsak, A.Horvath, A.Kiss, Z.Seres, A.Galonsky, C.A.Bertulani, Zs.Fulop, T.Baumann, D.Bazin, K.Ieki, C.Bordeanu, N.Carlin, M.Csanad, F.Deak, P.DeYoung, N.Frank, T.Fukuchi, A.Gade, D.Galaviz, C.R.Hoffman, W.A.Peters, H.Schelin, M.Thoennessen, G.I.Veres

Determining the ⁷Li(n, γ) cross section via Coulomb dissociation of ⁸Li

NUCLEAR REACTIONS C, Pb(⁸Li, n), [⁸Li secondary beam from ⁹Be(¹⁸O, X), E=120 MeV/nucleon primary reaction], E=69.5 MeV/nucleon; ⁸Li(γ, n)⁷Li, [γ from ⁸Li beam impinging on C and Pb targets], E(⁸Li)=69.5 MeV/nucleon; measured TOF, position and angle of ⁸Li particles, neutron spectra from Coulomb dissociation of ⁸Li, E(n), I(n) using MONA neutron detector array at NSCL-MSU cyclotron facility; reconstructed neutron ⁷Li energy spectra and momentum vectors; deduced σ(E) for ⁷Li(n, γ)⁸Li reaction. Surrogate method. Comparison of σ with previous experimental results, and with low-energy effective field theory calculations.

doi: 10.1103/PhysRevC.88.065808
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14378.

2013KA01      At.Data Nucl.Data Tables 99, 22 (2013)

J.Kathawa, C.Fry, M.Thoennessen

Discovery of palladium, antimony, tellurium, iodine, and xenon isotopes

COMPILATION ^{91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128}Pd, ^{103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140}Sb, ^{105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143}Te, ^{108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145}I, ^{109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148}Xe; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2012.01.004
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2013KO03      Phys.Rev. C 87, 011304 (2013)

Z.Kohley, E.Lunderberg, P.A.DeYoung, A.Volya, T.Baumann, D.Bazin, G.Christian, N.L.Cooper, N.Frank, A.Gade, C.Hall, J.Hinnefeld, B.Luther, S.Mosby, W.A.Peters, J.K.Smith, J.Snyder, A.Spyrou, M.Thoennessen

First observation of the ¹³Li ground state

NUCLEAR REACTIONS ⁹Be(¹⁴Be, ¹³Li), [¹⁴Be secondary beam from ⁹Be(¹⁸O, X), E=120 MeV/nucleon primary beam], E=53.6 MeV/nucleon; measured ¹¹Li fragment and neutron spectra, three-body (¹¹Li+n+n), and two-body (¹¹Li+n) decay energy spectra using Modular Neutron Array (MONA) for neutrons at NSCL facility. Monte Carlo and GEANT4 simulations. Glauber reaction model. ^12,13Li; deduced levels, ground state resonance energies. Strong dineutron character for ¹³Li g.s. Comparison with previous studies.

doi: 10.1103/PhysRevC.87.011304
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Data from this article have been entered in the XUNDL database. For more information, click here.

2013KO10      Phys.Rev.Lett. 110, 152501 (2013)

Z.Kohley, T.Baumann, D.Bazin, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, M.Jones, E.Lunderberg, B.Luther, S.Mosby, T.Nagi, J.K.Smith, J.Snyder, A.Spyrou, M.Thoennessen

Study of Two-Neutron Radioactivity in the Decay of ²⁶O

RADIOACTIVITY ²⁶O(2n) [from ⁹Be(²⁷F, p), E=82 MeV/nucleon]; measured decay products, En, In; deduced T_1/2. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.110.152501
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Data from this article have been entered in the XUNDL database. For more information, click here.

2013KO28      Phys.Rev. C 88, 041601 (2013)

Z.Kohley, G.Christian, T.Baumann, P.A.DeYoung, J.E.Finck, N.Frank, M.Jones, J.K.Smith, J.Snyder, A.Spyrou, M.Thoennessen

Exploiting neutron-rich radioactive ion beams to constrain the symmetry energy

NUCLEAR REACTIONS ⁹Be(³²Mg, X), [secondary ³²Mg beam from Be(⁴⁸Ca, X), E=140 MeV/nucleon primary reaction], E=73 MeV/nucleon; measured neutron spectra by MoNA array and particle spectra by 4 Tm Sweeper magnet, (particle)n-coin at yield of fragments at NSCL, MSU facility; deduced average N/Z vs Z, multiplicity, velocity distribution, density dependence of the symmetry energy by comparison of the experimental data with the constrained molecular dynamics model (CoMD) constraints.

doi: 10.1103/PhysRevC.88.041601
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2013MA01      At.Data Nucl.Data Tables 99, 1 (2013)

E.May, M.Thoennessen

Discovery of samarium, europium, gadolinium, and terbium isotopes

COMPILATION ^{129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162}Sm, ^{130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165}Eu, ^{135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166}Gd, ^{135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168}Tb; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2012.01.007
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2013MO12      Nucl.Phys. A909, 69 (2013)

S.Mosby, N.S.Badger, T.Baumann, D.Bazin, M.Bennett, J.Brown, G.Christian, P.A.DeYoung, J.E.Finck, M.Gardner, J.D.Hinnefeld, E.A.Hook, E.M.Lunderberg, B.Luther, D.A.Meyer, M.Mosby, G.F.Peaslee, W.F.Rogers, J.K.Smith, J.Snyder, A.Spyrou, M.J.Strongman, M.Thoennessen

Search for ²¹C and constraints on ²²C

NUCLEAR REACTIONS ⁹Be(²²C, n²¹C), E=68 MeV/nucleon; measured En, In(\theta), E(²⁰C fragment), I(²⁰C fragment, \theta). ^21,22C calculated double neutron halo nucleus low-lying levels, J, π, spectrometric factor using shell model, Goldhaber model with friction term. ²¹C deduced non-existence of bound state. ²⁰C+n deduced scattering length.

doi: 10.1016/j.nuclphysa.2013.04.004
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2013SN02      Phys.Rev. C 88, 031303 (2013)

J.Snyder, T.Baumann, G.Christian, R.A.Haring-Kaye, P.A.DeYoung, Z.Kohley, B.Luther, M.Mosby, S.Mosby, A.Simon, J.K.Smith, A.Spyrou, S.Stephenson, M.Thoennessen

First observation of ¹⁵Be

NUCLEAR REACTIONS ²H(¹⁴Be, ¹⁵Be), E=59 MeV/nucleon, [secondary ¹⁴Be from ⁹Be(¹⁸O, X), E=120 MeV/nucleon primary reaction]; measured ¹⁴Be, and neutron spectra from decay of ¹⁵Be, TOF, production σ, (¹⁴Be)n-coin using MoNA array at NSCL-MSU facility. Decay energy spectrum of ¹⁵Be fitted with energy-dependent Breit-Wigner distribution. ¹⁵Be; deduced level, J, π, neutron-unbound resonance, width. Shell-model calculations.

doi: 10.1103/PhysRevC.88.031303
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2053. Data from this article have been entered in the XUNDL database. For more information, click here.

2013TA14      Phys.Rev. C 87, 054612 (2013)

O.B.Tarasov, M.Portillo, D.J.Morrissey, A.M.Amthor, L.Bandura, T.Baumann, D.Bazin, J.S.Berryman, B.A.Brown, G.Chubarian, N.Fukuda, A.Gade, T.N.Ginter, M.Hausmann, N.Inabe, T.Kubo, J.Pereira, B.M.Sherrill, A.Stolz, C.Sumithrarachchi, M.Thoennessen, D.Weisshaar

Production cross sections from ⁸²Se fragmentation as indications of shell effects in neutron-rich isotopes close to the drip-line

NUCLEAR REACTIONS Be, W(⁸²Se, X), E=139 MeV/nucleon; measured fragment spectra using A1900 fragment separator at NSCL facility. Z=11, A=27-33; Z=12, A=29-37; Z=13, A=31-39; Z=14, A=29-42; Z=15, A=31-45; Z=16, A=33-48; Z=17, A=35-50; Z=18, A=38-52; Z=19, A=39-55; Z=20, A=41-58; Z=21, A=43-61; Z=22, A=46-64; Z=23, A=47-67; Z=24, A=50-70; Z=25, A=52-72; Z=26, A=54-60; Z=26, A=63-75; Z=27, A=56-62; Z=27, A=65-76; Z=28, A=60-63; Z=28, A=67-78; Z=29, A=62-65; Z=29, A=70-78; Z=30, A=64-68; Z=30, A=73-80; Z=31, A=75-81; Z=32, A=79-82; Z=33, A=81-83; measured production cross sections for 334 isotopes, and longitudinal momentum distributions for 126 isotopes. ⁶⁴Ti, ⁶⁷V, ^69,70Cr, ⁷²Mn, ⁷⁵Fe; measured production cross sections for isotopes first identified in this study. Comparison with calculations using abrasion-ablation model. Evidence for subshell closure at N=34 around Z=20.

doi: 10.1103/PhysRevC.87.054612
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2030.

2013TH02      At.Data Nucl.Data Tables 99, 312 (2013)

M.Thoennessen

Discovery of isotopes of elements with Z ≥ 100

COMPILATION ^{241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259}Fm, ^{245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260}Md, ^{250,251,252,253,254,255,256,257,258,259,260}No, ^{252,253,254,255,256,257,258,259,260}Lr, ^{253,254,255,256,257,258,259,260,261,262,263,265,267}Rf, ^{256,257,258,259,260,261,262,263,267,268,270}Db, ^{258,259,260,261,262,263,264,265,266,267,269,271}Sg, ^{260,261,262,264,265,266,267,270,272,274}Bh, ^{263,264,265,266,267,268,269,270,271,273,275,277}Hs, ^{266,268,270,274,275,276,278}Mt, ^{267,269,270,271,273,277,279,281}Ds, ^{272,274,278,279,280,281,282}Rg, ^{277,281,282,283,284,285}Cn, ^{278,282,283,284,285,286}Nh, ^{285,286,287,288,289}Fl, ^{287,288,289,290}Mc, ^{290,291,292,293}Lv, ^293,294Ts, ²⁹⁴Og; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2012.03.003
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2013TH04      Acta Phys.Pol. B44, 543 (2013)

M.Thoennessen, Z.Kohley, A.Spyrou, E.Lunderberg, P.A.DeYoung, H.Attanayake, T.Baumann, D.Bazin, B.A.Brown, G.Christian, D.Divaratne, S.M.Grimes, A.Haagsma, J.E.Finck, N.Frank, B.Luther, S.Mosby, T.Nagi, G.F.Peaslee, W.A.Peters, A.Schiller, J.K.Smith, J.Snyder, M.Strongman, A.Volya

Observation of Ground-state Two-neutron Decay

RADIOACTIVITY ¹⁶Be, ²⁶O(2n); measured decay products, En, In; deduced decay energy spectra. Comparison with calculated two-neutron separation energies, T_1/2, widths.

doi: 10.5506/APhysPolB.44.543
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2013TH06      Nucl.Phys. A912, 1 (2013)

M.Thoennessen, S.Mosby, N.S.Badger, T.Baumann, D.Bazin, M.Bennett, J.Brown, G.Christian, P.A.DeYoung, J.E.Finck, M.Gardner, E.A.Hook, B.Luther, D.A.Meyer, M.Mosby, W.F.Rogers, J.K.Smith, A.Spyrou, M.J.Strongman

Observation of a low-lying neutron-unbound state in ¹⁹C

NUCLEAR REACTIONS ⁹Be(²²N, n¹⁸C), (²²N, n¹⁹C), (²²N, n²⁰C), E=68 MeV/nucleon; measured carbon fragments, En, In, (carbon)n-coin. ¹⁹C deduced 76 keV resonance, low-lying level scheme near neutron drip line; calculated low-lying levels, J, π using different shell models.

doi: 10.1016/j.nuclphysa.2013.05.001
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2013TH07      Nucl.Instrum.Methods Phys.Res. A729, 207 (2013)

M.Thoennessen, G.Christian, Z.Kohley, T.Baumann, M.Jones, J.K.Smith, J.Snyder, A.Spyrou

Novel techniques to search for neutron radioactivity

RADIOACTIVITY ¹⁶B(2n); measured decay products, En, In; deduced new technique, T_1/2 sensitivity. Decay in Target (DiT) and Decay in a Magnetic Field (DiMF) methods.

doi: 10.1016/j.nima.2013.07.035
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2012BA05      Rep.Prog.Phys. 75, 036301 (2012)

T.Baumann, A.Spyrou, M.Thoennessen

Nuclear structure experiments along the neutron drip line

doi: 10.1088/0034-4885/75/3/036301
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2012CH02      Phys.Rev.Lett. 108, 032501 (2012)

G.Christian, N.Frank, S.Ash, T.Baumann, D.Bazin, J.Brown, P.A.DeYoung, J.E.Finck, A.Gade, G.F.Grinyer, A.Grovom, J.D.Hinnefeld, E.M.Lunderberg, B.Luther, M.Mosby, S.Mosby, T.Nagi, G.F.Peaslee, W.F.Rogers, J.K.Smith, J.Snyder, A.Spyrou, M.J.Strongman, M.Thoennessen, M.Warren, D.Weisshaar, A.Wersal

Exploring the Low-Z Shore of the Island of Inversion at N=19

NUCLEAR REACTIONS Be(²⁹Ne, X)²⁸F/²⁷F, E=62 MeV/nucleon; measured reaction products, TOF; deduced ²⁸F ground state energy as resonance in the ²⁷F+n continuum, binding energy. Comparison with USDA/USDB shell model predictions.

doi: 10.1103/PhysRevLett.108.032501
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2012CH12      Phys.Rev. C 85, 034327 (2012)

G.Christian, N.Frank, S.Ash, T.Baumann, P.A.DeYoung, J.E.Finck, A.Gade, G.F.Grinyer, B.Luther, M.Mosby, S.Mosby, J.K.Smith, J.Snyder, A.Spyrou, M.J.Strongman, M.Thoennessen, M.Warren, D.Weisshaar, A.Wersal

Spectroscopy of neutron-unbound ^{27, 28}F

NUCLEAR REACTIONS ⁹Be(²⁹Ne, X)²⁷F/²⁸F, [²⁹Ne secondary beam from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon primary beam], E=62 MeV/nucleon; measured particle spectra, energy loss, time-of-flight, (²⁶F)n-, (²⁷F)n-, (²⁶F)nγ-coin, E(n), E(^26,27F). MoNA array for neutrons, CAESAR array for γ rays. ²⁸F; deduced ground-state as unbound resonance in ²⁷F+n continuum, binding energy. ²⁷F; deduced neutron-unbound level. Comparison with USDA/USDB shell model predictions.

doi: 10.1103/PhysRevC.85.034327
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2012GA06      At.Data Nucl.Data Tables 98, 356 (2012)

K.Garofali, R.Robinson, M.Thoennessen

Discovery of chromium, manganese, nickel, and copper isotopes

COMPILATION ^{42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68}Cr, ^{46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70}Mn, ^{48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78}Ni, ^{55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80}Cu; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2011.11.002
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2012GR02      At.Data Nucl.Data Tables 98, 75 (2012)

J.L.Gross, J.Claes, J.Kathawa, M.Thoennessen

Discovery of zinc, selenium, bromine, and neodymium isotopes

COMPILATION ^{54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85}Zn, ^{64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95}Se, ^{70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98}Br, ^{125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156}Nd; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2011.12.001
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2012GR19      At.Data Nucl.Data Tables 98, 983 (2012)

J.L.Gross, M.Thoennessen

Discovery of gallium, germanium, lutetium, and hafnium isotopes

COMPILATION ^{60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87}Ga, ^{60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90}Ge, ^{150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184}Lu, ^{154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189}Hf; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2011.09.004
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2012KO43      Phys.Rev.Lett. 109, 232501 (2012)

Z.Kohley, J.Snyder, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, R.A.Haring-Kaye, M.Jones, E.Lunderberg, B.Luther, S.Mosby, A.Simon, J.K.Smith, A.Spyrou, S.L.Stephenson, M.Thoennessen

Unresolved Question of the ¹⁰He Ground State Resonance

NUCLEAR REACTIONS C, ²H(¹⁴Be, 2n2p)¹⁰He, E=59 MeV/nucleon; measured reaction products, En, In; deduced ground state resonance parameters. Comparison with available data, ¹⁸O secondary beams.

doi: 10.1103/PhysRevLett.109.232501
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2012LU07      Phys.Rev.Lett. 108, 142503 (2012)

E.Lunderberg, P.A.DeYoung, Z.Kohley, H.Attanayake, T.Baumann, D.Bazin, G.Christian, D.Divaratne, S.M.Grimes, A.Haagsma, J.E.Finck, N.Frank, B.Luther, S.Mosby, T.Nagi, G.F.Peaslee, A.Schiller, J.Snyder, A.Spyrou, M.J.Strongman, M.Thoennessen

Evidence for the Ground-State Resonance of ²⁶O

RADIOACTIVITY ²⁶O(2n) [from Be(²⁷F, p)²⁶O, E=82 MeV/nucleon];measured decay products, En, In. ²⁶O; deduced decay energy spectrum, evidence for the ground state or resonance in neutron unbound nucleus, T_1/2 limit. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.108.142503
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1923. Data from this article have been entered in the XUNDL database. For more information, click here.

2012MA48      At.Data Nucl.Data Tables 98, 960 (2012)

E.May, M.Thoennessen

Discovery of cesium, lanthanum, praseodymium and promethium isotopes

COMPILATION ^{112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152}Cs, ^{117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153}La, ^{121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154}Pr, ^{128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158}Pm; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2011.09.005
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2012NY02      At.Data Nucl.Data Tables 98, 95 (2012)

A.Nystrom, M.Thoennessen

Discovery of yttrium, zirconium, niobium, technetium, and ruthenium isotopes

COMPILATION ^{76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109}Y, ^{78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112}Zr, ^{82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115}Nb, ^{86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120}Tc, ^{87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124}Ru; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2011.12.002
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2012PA21      At.Data Nucl.Data Tables 98, 812 (2012)

A.M.Parker, M.Thoennessen

Discovery of rubidium, strontium, molybdenum, and rhodium isotopes

COMPILATION ^{73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103}Rb, ^{73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107}Sr, ^{83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117}Mo, ^{89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126}Rh; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2011.06.001
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2012PE11      Phys.Rev. C 86, 019802 (2012)

W.A.Peters, T.Baumann, B.A.Brown, J.Brown, P.A.DeYoung, J.E.Finck, N.Frank, K.L.Jones, J.-L.Lecouey, B.Luther, G.F.Peaslee, W.F.Rogers, M.Thoennessen, J.A.Tostevin

Reply to "Comment on 'Neutron knockout of 12Be populating neutron-unbound states in 11Be'"

NUCLEAR STRUCTURE ¹¹Be; reanalyzed decay energy curves, level, J, π, branching ratios for ⁹Be(¹²Be, n)¹¹Be experiment in 2011Pe13, and in reply to 2012Fo21 comment.

doi: 10.1103/PhysRevC.86.019802
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2012RO36      At.Data Nucl.Data Tables 98, 911 (2012)

R.Robinson, M.Thoennessen

Discovery of tantalum, rhenium, osmium, and iridium isotopes

COMPILATION ^{155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192}Ta, ^{159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196}Re, ^{161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199}Os, ^{165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202}Ir; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2011.09.003
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2012SM08      Phys.Rev. C 86, 057302 (2012)

J.K.Smith, T.Baumann, B.A.Brown, G.Christian, J.E.Finck, C.R.Hoffman, Z.Kohley, S.Mosby, J.F.Novak, S.J.Quinn, J.Snyder, A.Spyrou, M.J.Strongman, M.Thoennessen

Neutron unbound states in ²⁸Ne and ²⁵F

NUCLEAR REACTIONS ⁹Be(²⁹Na, ²⁸Ne), (²⁶F, ²⁵F), [secondary ²⁹Na and ²⁶F beam from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon primary reaction], E=102 MeV/nucleon; measured charged fragment spectra by TOF and energy loss, neutron spectra using MONA array at NSCL facility, decay energy spectra for ²⁸Ne and ²⁵F reconstructed from the ²⁷Ne+n and ²⁴F+n systems. ²⁵F, ²⁸Ne; deduced unbound levels, J, π, spectroscopic factors, Breit-Wigner resonance. Glauber reaction model analysis. Comparison with shell model calculations.

NUCLEAR STRUCTURE ²⁸Ne, ²⁵F; calculated bound and unbound levels, J, π, spectroscopic factors for ²⁷Ne+n system, widths. Shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.057302
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2012SP01      Phys.Rev.Lett. 108, 102501 (2012)

A.Spyrou, Z.Kohley, T.Baumann, D.Bazin, B.A.Brown, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, E.Lunderberg, S.Mosby, W.A.Peters, A.Schiller, J.K.Smith, J.Snyder, M.J.Strongman, M.Thoennessen, A.Volya

First Observation of Ground State Dineutron Decay: ¹⁶Be

RADIOACTIVITY ¹⁶Be(2n) [from Be(¹⁷B, p), E=53 MeV/nucleon]; measured decay products, En, In; deduced two-neutron separation energy.

doi: 10.1103/PhysRevLett.108.102501
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2012TH01      At.Data Nucl.Data Tables 98, 43 (2012)

M.Thoennessen

Discovery of isotopes with Z ≤ 10

COMPILATION ^{1,2,3,4,5,6,7}H, ^{2,3,4,5,6,7,8,9,10}He, ^{4,5,6,7,8,9,10,11,12,13}Li, ^{6,7,8,9,10,11,12,13,14}Be, ^{7,8,9,10,11,12,13,14,15,16,17,18,19}B, ^{8,9,10,11,12,13,14,15,16,17,18,19,20,22}C, ^{10,11,12,13,14,15,16,17,18,19,20,21,22,23}N, ^{12,13,14,15,16,17,18,19,20,21,22,23,24,25}O, ^{14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,31}F, ^{16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,34}Ne; compiled first identification (or discovery) of isotopes with Z ≤ 10.

doi: 10.1016/j.adt.2011.08.002
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2012TH10      At.Data Nucl.Data Tables 98, 933 (2012)

M.Thoennessen

Discovery of the Isotopes with 11 ≤ Z ≤ 19

COMPILATION ^{18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,37}Na, ^{19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,40}Mg, ^{22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43}Al, ^{22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44}Si, ^{26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46}P, ^{27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48}S, ^{31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51}Cl, ^{31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53}Ar, ^{35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56}K; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2011.09.002
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2011AM01      At.Data Nucl.Data Tables 97, 383 (2011)

S.Amos, J.L.Gross, M.Thoennessen

Discovery of the calcium, indium, tin, and platinum isotopes

COMPILATION ^{35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58}Ca, ^{98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135}In, ^{100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137}Sn, ^{166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204}Pt; compiled first identification (or discovery) of isotopes in Ca, In, Sn and Pt.

doi: 10.1016/j.adt.2011.03.001
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2011FR13      Phys.Rev. C 84, 037302 (2011)

N.Frank, D.Albertson, J.Bailey, T.Baumann, D.Bazin, B.A.Brown, J.Brown, P.A.DeYoung, J.E.Finck, A.Gade, J.Hinnefeld, R.Howes, M.Kasperczyk, B.Luther, W.A.Peters, A.Schiller, A.Smith, M.Thoennessen, J.A.Tostevin

Neutron-unbound states in ^{25, 26}F

NUCLEAR REACTIONS ⁹Be(²⁶Ne, ²⁵F), (²⁶Ne, ²⁶F), E=86 MeV/nucleon; measured E(n), I(n) at NSCL. ^25,26F; deduced levels, J, π, widths, resonances. ²⁵F; calculated levels, J, π using shell-model.

doi: 10.1103/PhysRevC.84.037302
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2011HO05      Phys.Rev. C 83, 031303 (2011)

C.R.Hoffman, T.Baumann, J.Brown, P.A.DeYoung, J.E.Finck, N.Frank, J.D.Hinnefeld, S.Mosby, W.A.Peters, W.F.Rogers, A.Schiller, J.Snyder, A.Spyrou, S.L.Tabor, M.Thoennessen

Observation of a two-neutron cascade from a resonance in ²⁴O

NUCLEAR REACTIONS ⁹Be(²⁶F, nn), E=85 MeV/nucleon; measured neutron spectra using MoNA array, neutron resonance decay energy, neutron-neutron-fragment, neutron-fragment energies, TOF, ²²O-nn coin. ²⁴O; deduced level, two-neutron cascade from the resonance in ²⁴O to ²²O. ^22,23O; deduced levels. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.83.031303
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2011ME01      At.Data Nucl.Data Tables 97, 134 (2011)

D.Meierfrankenfeld, A.Bury, M.Thoennessen

Discovery of scandium, titanium, mercury, and einsteinium isotopes

COMPILATION ^{39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61}Sc, ^{39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63}Ti, ^{171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210}Hg, ^{241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257}Es; compiled first identification (or discovery) of isotopes in Sc, Ti, Hg and Es.

doi: 10.1016/j.adt.2010.11.001
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2011PE13      Phys.Rev. C 83, 057304 (2011)

W.A.Peters, T.Baumann, B.A.Brown, J.Brown, P.A.DeYoung, J.E.Finck, N.Frank, K.L.Jones, J.-L.Lecouey, B.Luther, G.F.Peaslee, W.F.Rogers, A.Schiller, M.Thoennessen, J.A.Tostevin, K.Yoneda

Neutron knockout of ¹²Be populating neutron-unbound states in ¹¹Be

NUCLEAR REACTIONS ⁹Be(¹²Be, n), E=90 MeV/nucleon, [¹²Be secondary beam from ⁹Be(¹⁸O, X), E=120 MeV/nucleon primary reaction]; measured E(n), I(n) by TOF using MONA array, n(¹⁰Be) coin. ¹¹Be; deduced levels, J, π, resonances, σ, spectroscopic factor. ¹⁰Be; deduced levels from neutron decay of unbound resonances. Comparison with shell model calculations.

doi: 10.1103/PhysRevC.83.057304
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2011SP01      Phys.Rev. C 84, 044309 (2011)

A.Spyrou, J.K.Smith, T.Baumann, B.A.Brown, J.Brown, G.Christian, P.A.DeYoung, N.Frank, S.Mosby, W.A.Peters, A.Schiller, M.J.Strongman, M.Thoennessen, J.A.Tostevin

Search for the ¹⁵Be ground state

NUCLEAR REACTIONS ⁹Be(¹⁷C, 2p), E=55 MeV/nucleon, [¹⁷C secondary beam from ⁹Be(²²Ne, X) primary reaction]; measured energy loss, time of flight, magnetic rigidity, Be fragment spectra and (Be)(n)-coin. ¹⁵Be; deduced g.s., J, π, decay mode, unbound energy. Comparison with shell model calculations.

doi: 10.1103/PhysRevC.84.044309
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2010AM04      At.Data Nucl.Data Tables 96, 855 (2010)

S.Amos, M.Thoennessen

Discovery of the cadmium isotopes

COMPILATION ^{96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132}Cd; compiled first identification (or discovery) of isotopes in Cd.

doi: 10.1016/j.adt.2010.06.007
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2010FR08      At.Data Nucl.Data Tables 96, 315 (2010)

A.Fritsch, J.Q.Ginepro, M.Heim, A.Schuh, A.Shore, M.Thoennessen

Discovery of the tungsten isotopes

COMPILATION ^{158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192}W; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2009.12.003
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2010HA04      Phys.Rev. C 81, 021302 (2010)

C.C.Hall, E.M.Lunderberg, P.A.DeYoung, T.Baumann, D.Bazin, G.Blanchon, A.Bonaccorso, B.A.Brown, J.Brown, G.Christian, D.H.Denby, J.Finck, N.Frank, A.Gade, J.Hinnefeld, C.R.Hoffman, B.Luther, S.Mosby, W.A.Peters, A.Spyrou, M.Thoennessen

First observation of excited states in ¹²Li

NUCLEAR REACTIONS Be(¹⁴B, 2p), E=53.4 MeV/nucleon; measured neutron and ¹¹Li spectra from decay of ¹²Li, and (¹¹Li)n-coin using Modular Neutron Array (MONA). ¹²Li; deduced levels, J, π. Comparisons with shell model calculations using WBP interaction.

doi: 10.1103/PhysRevC.81.021302
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2010HE02      At.Data Nucl.Data Tables 96, 333 (2010)

M.Heim, A.Fritsch, A.Schuh, A.Shore, M.Thoennessen

Discovery of the krypton isotopes

COMPILATION ^{69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100}Kr; compiled first identification (or discovery) of isotopes in Kr.

doi: 10.1016/j.adt.2010.01.001
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2010SC10      At.Data Nucl.Data Tables 96, 531 (2010)

A.Schuh, A.Fritsch, J.Q.Ginepro, M.Heim, A.Shore, M.Thoennessen

Discovery of the silver isotopes

COMPILATION ^{93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130}Ag; compiled first identification (or discovery) of isotopes in Ag.

doi: 10.1016/j.adt.2010.02.003
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2010SC18      At.Data Nucl.Data Tables 96, 817 (2010)

A.Schuh, A.Fritsch, M.Heim, A.Shore, M.Thoennessen

Discovery of the iron isotopes

COMPILATION ^{45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72}Fe; compiled first identification (or discovery) of isotopes in Fe.

doi: 10.1016/j.adt.2010.06.003
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2010SC35      At.Data Nucl.Data Tables 96, 307 (2010)

A.Schuh, A.Fritsch, J.Q.Ginepro, M.Heim, A.Shore, M.Thoennessen

Discovery of the gold isotopes

COMPILATION ^{170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205}Au; compiled first identification (or discovery) of isotopes.

doi: 10.1016/j.adt.2009.12.001
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2010SH05      At.Data Nucl.Data Tables 96, 351 (2010)

A.Shore, A.Fritsch, M.Heim, A.Schuh, M.Thoennessen

Discovery of the vanadium isotopes

COMPILATION ^{43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66}V; compiled first identification (or discovery) of isotopes in V.

doi: 10.1016/j.adt.2010.02.002
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2010SH20      At.Data Nucl.Data Tables 96, 749 (2010)

A.Shore, A.Fritsch, J.Q.Ginepro, M.Heim, A.Schuh, M.Thoennessen

Discovery of the barium isotopes

COMPILATION ^{114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151}Ba; compiled first identification (or discovery) of isotopes in Ba.

doi: 10.1016/j.adt.2010.06.001
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2010SH34      At.Data Nucl.Data Tables 96, 299 (2010)

A.Shore, A.Fritsch, M.Heim, A.Schuh, M.Thoennessen

Discovery of the arsenic isotopes

COMPILATION ^{64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92}As; compiled first identification (or discovery) of isotopes of As.

doi: 10.1016/j.adt.2009.11.001
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2010SP02      Phys.Lett. B 683, 129 (2010)

A.Spyrou, T.Baumann, D.Bazin, G.Blanchon, A.Bonaccorso, E.Breitbach, J.Brown, G.Christian, A.DeLine, P.A.DeYoung, J.E.Finck, N.Frank, S.Mosby, W.A.Peters, A.Russel, A.Schiller, M.J.Strongman, M.Thoennessen

First evidence for a virtual ¹⁸B ground state

NUCLEAR REACTIONS Be(¹⁹C, pX)¹⁸B, E=62 MeV/nucleon; Be(¹⁷C, pX)¹⁶B, E=55 MeV/nucleon; measured decay energy spectra, (fragment)(neutron)-coin using time of flight technique with Modular Neutron Array (MoNA). ¹⁶B; deduced ground state energies. ¹⁷B; deduced level energies, J, π. ¹⁸B; calculated level energies, J, π. Comparison with shell model calculations using WBP interaction and other data. Secondary radioactive beam.

doi: 10.1016/j.physletb.2009.12.016
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2010SZ02      At.Data Nucl.Data Tables 96, 848 (2010)

T.Szymanski, M.Thoennessen

Discovery of the cobalt isotopes

COMPILATION ^{50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75}Co; compiled first identification (or discovery) of isotopes in Co.

doi: 10.1016/j.adt.2010.06.006
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2010TH03      Nucl.Phys. A834, 688c (2010)

M.Thoennessen

Plans for the Facility for Rare Isotope Beams

doi: 10.1016/j.nuclphysa.2010.01.125
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2009GI07      At.Data Nucl.Data Tables 95, 805 (2009)

J.Q.Ginepro, J.Snyder, M.Thoennessen

Discovery of the cerium isotopes

COMPILATION ^{121,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155}Ce; compiled first identification (or discovery) of isotopes in Ce.

doi: 10.1016/j.adt.2009.06.002
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2009HO01      Phys.Lett. B 672, 17 (2009)

C.R.Hoffman, T.Baumann, D.Bazin, J.Brown, G.Christian, D.H.Denby, P.A.DeYoung, J.E.Finck, N.Frank, J.Hinnefeld, S.Mosby, W.A.Peters, W.F.Rogers, A.Schiller, A.Spyrou, M.J.Scott, S.L.Tabor, M.Thoennessen, P.Voss

Evidence for a doubly magic ²⁴O

NUCLEAR REACTIONS Be(²⁶F, n²³O), E=85 MeV/nucleon; measured neutron decay energy spectra, (fragment)(neutron)-coin. ²⁴O deduced excited state energies, J, π. Comparison with other data and systematics. Secondary radioactive beam.

doi: 10.1016/j.physletb.2008.12.066
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2009ST20      Phys.Rev. C 80, 021302 (2009)

M.J.Strongman, A.Spyrou, C.R.Hoffman, T.Baumann, D.Bazin, J.Brown, P.A.DeYoung, J.E.Finck, N.Frank, S.Mosby, W.F.Rogers, G.F.Peaslee, W.A.Peters, A.Schiller, S.L.Tabor, M.Thoennessen

Disappearance of the N = 14 shell

NUCLEAR REACTIONS Be(²⁶F, X)²²N, E=85 MeV/nucleon; measured En and (fragment)(neutron)-coin spectrum. ²²N; deduced levels, J, π. Level systematics of N=14, 15 C, N and O isotones. Comparison with shell-model calculations using WBTM and WBPM interactions.

doi: 10.1103/PhysRevC.80.021302
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2009TA05      Phys.Rev.Lett. 102, 142501 (2009)

O.B.Tarasov, D.J.Morrissey, A.M.Amthor, T.Baumann, D.Bazin, A.Gade, T.N.Ginter, M.Hausmann, N.Inabe, T.Kubo, A.Nettleton, J.Pereira, M.Portillo, B.M.Sherrill, A.Stolz, M.Thoennessen

Evidence for a Change in the Nuclear Mass Surface with the Discovery of the Most Neutron-Rich Nuclei with 17 ≤ Z ≤ 25

NUCLEAR REACTIONS ⁹Be(⁷⁶Ge, X)⁵⁰Cl/⁵³Ar/⁵⁵K/⁵⁶K/⁵⁷Ca/⁵⁸Ca/⁵⁹Sc/⁶⁰Sc/⁶¹Sc/⁶²Ti/⁶³Ti/⁶⁵V/⁶⁶V/⁶⁸Cr/⁷⁰Mn/⁵²Ar, E=132 MeV/nucleon; measured cross sections.

doi: 10.1103/PhysRevLett.102.142501
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2009TA24      Phys.Rev. C 80, 034609 (2009)

O.B.Tarasov, M.Portillo, A.M.Amthor, T.Baumann, D.Bazin, A.Gade, T.N.Ginter, M.Hausmann, N.Inabe, T.Kubo, D.J.Morrissey, A.Nettleton, J.Pereira, B.M.Sherrill, A.Stolz, M.Thoennessen

Production of very neutron-rich nuclei with a ⁷⁶Ge beam

NUCLEAR REACTIONS ⁹Be, W(⁷⁶Ge, X)⁵⁰Cl/⁵³Ar/⁵⁵K/⁵⁶K/⁵⁷Ca/⁵⁸Ca/⁵⁹Sc/⁶⁰Sc/⁶¹Sc/⁶²Ti/⁶³Ti/⁶⁵V/⁶⁶V/⁶⁸Cr/⁷⁰Mn/⁵²Ar, E=132 MeV/nucleon; measured fragment yields, production σ for A=33-74, Z=13-29 nuclides, longitudinal momentum distributions for Z=17-25 nuclides, time-of-flight. Comparison with various model calculations.

doi: 10.1103/PhysRevC.80.034609
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2008CH07      Nucl.Phys. A801, 101 (2008)

G.Christian, W.A.Peters, D.Absalon, D.Albertson, T.Baumann, D.Bazin, E.Breitbach, J.Brown, P.L.Cole, D.Denby, P.A.DeYoung, J.E.Finck, N.Frank, A.Fritsch, C.Hall, A.M.Hayes, J.Hinnefeld, C.R.Hoffman, R.Howes, B.Luther, E.Mosby, S.Mosby, D.Padilla, P.V.Pancella, G.Peaslee, W.F.Rogers, A.Schiller, M.J.Strongman, M.Thoennessen, L.O.Wagner

Production of nuclei in neutron unbound states via primary fragmentation of ⁴⁸Ca

NUCLEAR REACTIONS ⁹Be(⁴⁸Ca, X)¹⁰Li/^11,13Be/²³O, E=60 MeV/nucleon; measured neutron decay energy spectra, (fragment)(neutron)-coin using sequential neutron decay spectroscopy technique. ¹⁰Li, ^11,13Be, ²³O observed unbound states.

doi: 10.1016/j.nuclphysa.2008.01.004
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2008DE29      Phys.Rev. C 78, 044303 (2008)

D.H.Denby, P.A.DeYoung, T.Baumann, D.Bazin, E.Breitbach, J.Brown, N.Frank, A.Gade, C.C.Hall, J.Hinnefeld, C.R.Hoffman, R.Howes, R.A.Jenson, B.Luther, S.M.Mosby, C.W.Olson, W.A.Peters, A.Schiller, A.Spyrou, M.Thoennessen

Ground state energy and width of ⁷He from ⁸Li proton knockout

NUCLEAR REACTIONS Be(⁸Li, X), E=41 MeV/nucleon; measured particle spectra, angular distributions. Deduced energy of ground-state resonances. ⁷He; deduced ground-state energies and widths.

doi: 10.1103/PhysRevC.78.044303
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2008FR10      Nucl.Phys. A813, 199 (2008)

N.Frank, T.Baumann, D.Bazin, B.A.Brown, J.Brown, P.A.DeYoung, J.E.Finck, A.Gade, J.Hinnefeld, R.Howes, J.-L.Lecouey, B.Luther, W.A.Peters, H.Scheit, A.Schiller, M.Thoennessen, J.Tostevin

Neutron decay spectroscopy of neutron-rich oxygen isotopes

NUCLEAR REACTIONS ⁹Be(²⁶Ne, X)²²O/²³O/²⁴O, E=86 MeV/nucleon; measured fragment and neutron spectra, (fragment)n-coin, decay energy spectra; deduced reaction mechanism features. ^22,23,24O deduced levels, J, π, strength functions, configurations. ²³O observed unbound state.

doi: 10.1016/j.nuclphysa.2008.09.009
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2008HO03      Phys.Rev.Lett. 100, 152502 (2008)

C.R.Hoffman, T.Baumann, D.Bazin, J.Brown, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, J.Hinnefeld, R.Howes, P.Mears, E.Mosby, S.Mosby, J.Reith, B.Rizzo, W.F.Rogers, G.Peaslee, W.A.Peters, A.Schiller, M.J.Scott, S.L.Tabor, M.Thoennessen, P.J.Voss, T.Williams

Determination of the N = 16 Shell Closure at the Oxygen Drip Line

NUCLEAR REACTIONS Be(²⁶F, ²⁵O), E=85 MeV/nucleon; measured fragment, neutron energies and yields. ²⁵O; deduced decay width.

doi: 10.1103/PhysRevLett.100.152502
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2007BA71      Nature(London) 449, 1022 (2007)

T.Baumann, A.M.Amthor, D.Bazin, B.A.Brown, C.M.Folden III, A.Gade, T.N.Ginter, M.Hausmann, M.Matos, D.J.Morrissey, M.Portillo, A.Schiller, B.M.Sherrill, A.Stolz, O.B.Tarasov, M.Thoennessen

Discovery of ⁴⁰Mg and ⁴²Al suggests neutron drip-line slant towards heavier isotopes

NUCLEAR REACTIONS W(⁴⁸Ca, X)⁴⁰Mg/⁴²Al, E=141 MeV/nucleon; measured fragment energies, charge and mass distributions.

doi: 10.1038/nature06213
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Note: The following list of authors and aliases matches the search parameter M.Thoennessen: , M.R.THOENNESSEN