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NSR database version of April 11, 2024.

Search: Author = B.C.Rasco

Found 43 matches.

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2024GR01      Nucl.Data Sheets 193, 88 (2024)

T.J.Gray, J.M.Allmond, L.G.Evans, B.D.Roach, T.T.King, B.C.Rasco

Absolute Branching Ratios of Prominent γ Rays Following α Decay of 233U

RADIOACTIVITY 233U(α); measured decay products, Eγ, Iγ, Eα, Iα, α-γ-coin.; deduced γ-ray energies, absolute γ-ray branching ratios (emission probabilities) for 19 prominent peaks in the α decay of 233U with energies ranging from 97 to 366 keV. Comparison with available data.

doi: 10.1016/j.nds.2024.01.003
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2023GR04      Phys.Rev.Lett. 130, 242501 (2023)

T.J.Gray, J.M.Allmond, Z.Xu, T.T.King, R.S.Lubna, H.L.Crawford, V.Tripathi, B.P.Crider, R.Grzywacz, S.N.Liddick, A.O.Macchiavelli, T.Miyagi, A.Poves, A.Andalib, E.Argo, C.Benetti, S.Bhattacharya, C.M.Campbell, M.P.Carpenter, J.Chan, A.Chester, J.Christie, B.R.Clark, I.Cox, A.A.Doetsch, J.Dopfer, J.G.Duarte, P.Fallon, A.Frotscher, T.Gaballah, J.T.Harke, J.Heideman, H.Huegen, J.D.Holt, R.Jain, N.Kitamura, K.Kolos, F.G.Kondev, A.Laminack, B.Longfellow, S.Luitel, M.Madurga, R.Mahajan, M.J.Mogannam, C.Morse, S.Neupane, A.Nowicki, T.H.Ogunbeku, W.-J.Ong, C.Porzio, C.J.Prokop, B.C.Rasco, E.K.Ronning, E.Rubino, T.J.Ruland, K.P.Rykaczewski, L.Schaedig, D.Seweryniak, K.Siegl, M.Singh, A.E.Stuchbery, S.L.Tabor, T.L.Tang, T.Wheeler, J.A.Winger, J.L.Wood

Microsecond Isomer at the N=20 Island of Shape Inversion Observed at FRIB

RADIOACTIVITY 32Na(IT), (β-) [from 9Be(48Ca, X), E=172.3 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced γ-ray energies, partial level scheme, isomeric T1/2, B(E2), single-particle occupancies. Comparison with calculations. The Advanced Rare Isotope Separator (ARIS), the FRIB Decay Station initiator (FDSi).

doi: 10.1103/PhysRevLett.130.242501
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2023HA16      Nucl.Data Sheets 189, 224 (2023)

L.Hariasz, P.C.F.Di Stefano, M.Stukel, B.C.Rasco, K.P.Rykaczewski, N.T.Brewer, R.K.Grzywacz, E.D.Lukosi, D.W.Stracener, M.Mancuso, F.Petricca, J.Ninkovic, P.Lechner

Precision measurement of 65Zn electron-capture decays with the KDK coincidence setup

RADIOACTIVITY 65Zn(EC); measured decay products, X-rays, Eγ, Iγ, Eβ, Iβ; deduced the absolute emission intensity of 1115 keV γ-rays, the total EC0 branching ratio, decay scheme. Comparison with NNDC values. Modular Total Absorption Spectrometer (MTAS).

doi: 10.1016/j.nds.2023.04.003
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2023HA25      Phys.Rev. C 108, 014327 (2023)

L.Hariasz, M.Stukel, P.C.F.Di Stefano, B.C.Rasco, K.P.Rykaczewski, N.T.Brewer, D.W.Stracener, Y.Liu, Z.Gai, C.Rouleau, J.Carter, J.Kostensalo, J.Suhonen, H.Davis, E.D.Lukosi, K.C.Goetz, R.K.Grzywacz, M.Mancuso, F.Petricca, A.Fijalkowska, M.Wolinska-Cichocka, J.Ninkovic, P.Lechner, R.B.Ickert, L.E.Morgan, P.R.Renne, I.Yavin, for the KDK Collaboration

Evidence for ground-state electron capture of 40K

RADIOACTIVITY 40K(EC); measured decay products, X-rays, Eγ, Iγ; deduced EC0/EC* relative branching ratios to the ground state and excited state of 40Ar, T1/2, decay scheme. First experimental verification of a third-forbidden unique transition. Discussed the impact of found evidence of the 40K decay to the ground-sate on the geochronology and nuclear theory. Comparison to theoretical estimations. Sensitive x-ray silicon drift detector (SDD) and Modular Total Absorption Spectrometer (MTAS).

doi: 10.1103/PhysRevC.108.014327
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2023NI05      Eur.Phys.J. A 59, 78 (2023)

A.L.Nichols, P.Dimitriou, A.Algora, M.Fallot, L.Giot, F.G.Kondev, T.Yoshida, M.Karny, G.Mukherjee, B.C.Rasco, K.P.Rykaczewski, A.A.Sonzogni, J.L.Tain

Improving fission-product decay data for reactor applications: part I-decay heat

NUCLEAR REACTIONS 235U, 238,239,240,241,242Pu, 241,242,243Am, 243,245Cm(n, F), E thermal; 232Th, 233,238U, 237Np(n, F), E fast; analyzed available data; deduced decay heat. Total Absorption Gamma-ray Spectroscopy (TAGS - sometimes abbreviated to TAS) and Discrete Gamma-ray Spectroscopy (DGS). This review has been carried out following similar work performed under the auspices of OECD/WPEC-Subgroup 25 (2005-2007) and the International Atomic Energy Agency (2009, 2014), and various highly relevant TAGS measurements completed as a consequence of such assessments.

doi: 10.1140/epja/s10050-023-00969-x
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2023WO01      Phys.Rev. C 107, 034303 (2023)

M.Wolinska-Cichocka, B.C.Rasco, K.P.Rykaczewski, N.T.Brewer, A.Fijalkowska, M.Karny, R.K.Grzywacz, K.C.Goetz, C.J.Gross, D.W.Stracener, E.F.Zganjar, J.C.Batchelder, J.C.Blackmon, S.Go, B.Heffron, J.Johnson, T.T.King, J.T.Matta, K.Miernik, M.Madurga, E.A.McCutchan, D.Miller, C.D.Nesaraja, S.V.Paulauskas, M.M.Rajabali, S.Taylor, A.A.Sonzogni, E.H.Wang, J.A.Winger, Y.Xiao, C.J.Zachary

Complete β-decay patterns of 142Cs, 142Ba, and 142La determined using total absorption spectroscopy

RADIOACTIVITY 142La, 142Ba, 142Cs(β-)[from 238U(p, F), E=40 MeV]; measured Eγ, Iγ, Eβ, Iβ, γβ-coin, total absorption spectra; deduced T1/2, average gamma energy per decay, β-feeding intensities, decay patterns, σ for the detection of reactor antineutrinos. 142Cs(β-n); deduced β-delayed neutron branching ratio. Comparison with other experimental values and ENSDF evaluation. Modular Total Absorption Spectrometer (MTAS) array of 19 NaI(Tl) coupled with auxiliary Si-strip detectors at the mass separator and Tandem accelerator at Oak Ridge National Laboratory.

doi: 10.1103/PhysRevC.107.034303
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2023YO04      Phys.Rev. C 108, 064307 (2023)

R.Yokoyama, R.Grzywacz, B.C.Rasco, N.Brewer, K.P.Rykaczewski, I.Dillmann, J.L.Tain, S.Nishimura, D.S.Ahn, A.Algora, J.M.Allmond, J.Agramunt, H.Baba, S.Bae, C.G.Bruno, R.Caballero-Folch, F.Calvino, P.J.Coleman-Smith, G.Cortes, T.Davinson, C.Domingo-Pardo, A.Estrade, N.Fukuda, S.Go, C.J.Griffin, J.Ha, O.Hall, L.J.Harkness-Brennan, J.Heideman, T.Isobe, D.Kahl, M.Karny, T.Kawano, L.H.Khiem, T.T.King, G.G.Kiss, A.Korgul, S.Kubono, M.Labiche, I.Lazarus, J.Liang, J.Liu, G.Lorusso, M.Madurga, K.Matsui, K.Miernik, F.Montes, A.I.Morales, P.Morrall, N.Nepal, R.D.Page, V.H.Phong, M.Piersa-Silkowska, M.Prydderch, V.F.E.Pucknell, M.M.Rajabali, B.Rubio, Y.Saito, H.Sakurai, Y.Shimizu, J.Simpson, M.Singh, D.W.Stracener, T.Sumikama, H.Suzuki, H.Takeda, A.Tarifeno-Saldivia, S.L.Thomas, A.Tolosa-Delgado, M.Wolinska-Cichocka, P.J.Woods, X.X.Xu

β-delayed neutron emissions from N>50 gallium isotopes

doi: 10.1103/PhysRevC.108.064307
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2022CR03      Phys.Rev.Lett. 129, 212501 (2022)

H.L.Crawford, V.Tripathi, J.M.Allmond, B.P.Crider, R.Grzywacz, S.N.Liddick, A.Andalib, E.Argo, C.Benetti, S.Bhattacharya, C.M.Campbell, M.P.Carpenter, J.Chan, A.Chester, J.Christie, B.R.Clark, I.Cox, A.A.Doetsch, J.Dopfer, J.G.Duarte, P.Fallon, A.Frotscher, T.Gaballah, T.J.Gray, J.T.Harke, J.Heideman, H.Heugen, R.Jain, T.T.King, N.Kitamura, K.Kolos, F.G.Kondev, A.Laminack, B.Longfellow, R.S.Lubna, S.Luitel, M.Madurga, R.Mahajan, M.J.Mogannam, C.Morse, S.Neupane, A.Nowicki, T.H.Ogunbeku, W.-J.Ong, C.Porzio, C.J.Prokop, B.C.Rasco, E.K.Ronning, E.Rubino, T.J.Ruland, K.P.Rykaczewski, L.Schaedig, D.Seweryniak, K.Siegl, M.Singh, S.L.Tabor, T.L.Tang, T.Wheeler, J.A.Winger, Z.Xu

Crossing N = 28 Toward the Neutron Drip Line: First Measurement of Half-Lives at FRIB

RADIOACTIVITY 44,45P, 42,43Si, 39,40,41Al, 36,37,38Mg, 35Na, 32Ne, 29F(β-), (β-n), (β-2n) [from 9Be(48Ca, X), E=172.3 MeV/nucleon]; measured decay products, Eβ, Iβ, En, In; deduced T1/2. Comparison with the latest quasiparticle random phase approximation and shell-model calculations and available data. The Facility for Rare Isotope Beams (FRIB) with the FRIB decay station initiator.

doi: 10.1103/PhysRevLett.129.212501
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2022KI23      Astrophys.J. 936, 107 (2022)

G.G.Kiss, A.Vitez-Sveiczer, Y.Saito, A.Tarifeno-Saldivia, M.Pallas, J.L.Tain, I.Dillmann, J.Agramunt, A.Algora, C.Domingo-Pardo, A.Estrade, C.Appleton, J.M.Allmond, P.Aguilera, H.Baba, N.T.Brewer, C.Bruno, R.Caballero-Folch, F.Calvino, P.J.Coleman-Smith, G.Cortes, T.Davinson, N.Fukuda, Z.Ge, S.Go, C.J.Griffin, R.K.Grzywacz, O.Hall, A.Horvath, J.Ha, L.J.Harkness-Brennan, T.Isobe, D.Kahl, T.T.King, A.Korgul, S.Kovacs, R.Krucken, S.Kubono, M.Labiche, J.Liu, J.Liang, M.Madurga, K.Miernik, F.Molina, A.I.Morales, M.R.Mumpower, E.Nacher, A.Navarro, N.Nepal, S.Nishimura, M.Piersa-Silkowska, V.Phong, B.C.Rasco, B.Rubio, K.P.Rykaczewski, J.Romero-Barrientos, H.Sakurai, L.Sexton, Y.Shimizu, M.Singh, T.Sprouse, T.Sumikama, R.Surman, H.Suzuki, T.N.Szegedi, H.Takeda, A.Tolosa, K.Wang, M.Wolinska-Cichocka, P.Woods, R.Yokoyama, Z.Xu

Measuring the β-decay Properties of Neutron-rich Exotic Pm, Sm, Eu, and Gd Isotopes to Constrain the Nucleosynthesis Yields in the Rare-earth Region

NUCLEAR REACTIONS 9Be(238U, X), E=345 MeV/nucleon; measured reaction products, TOF, Eβ, Iβ. 159,160,161,162,163,164,165,166Pm, 161,162,163,164,165,166,167,168Sm, 165,166,167,168,169,170Eu, 167,168,169,170,171,172Gd; deduced new isotopes T1/2 and β-delayed neutron emission probabilities, relative r-process abundance pattern for the neutron-star merger scenario. RIKEN Nishina Center, the Advanced Implantation Detector Array (AIDA) and the BRIKEN neutron detector array.

doi: 10.3847/1538-4357/ac80fc
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2022NE12      Phys.Rev. C 106, 044320 (2022)

S.Neupane, J.Heideman, R.Grzywacz, M.Cooper, J.Hooker, K.L.Jones, T.T.King, N.Kitamura, M.Madurga, K.Siegl, C.R.Thornsberry, P.Wagenknecht, Z.Y.Xu, L.H.Heilbronn, M.M.Rajabali, A.Chester, A.Richard, Y.Alberty-Jones, J.Derkin, T.N.Massey, D.Soltesz, N.T.Brewer, B.C.Rasco, K.P.Rykaczewski, M.Wolinska-Cichocka, J.Clark, D.Santiago-Gonzalez, G.Savard

Demonstration of the neutron tracking capability of NEXT array in time-of-flight measurements to improve energy resolution

RADIOACTIVITY 17N, 104Nb(β-n); measured neutron time-of-flight (ToF), En, In. Data on the commissioning of the Neutron dEtector with Xn Tracking (NEXT) array consisting of 8x4 optically separated segments. Measurement of 17N decay at National Superconducting Cyclotron Laboratory (NSCL), 106Nb decay Argonne National Laboratory (ANL, CARIBU Facility).

NUCLEAR REACTIONS 27Al(d, n), E=7.44 MeV; measured neutron time-of-flight (ToF), En, In. Data on the commissioning of the Neutron dEtector with Xn Tracking (NEXT) array consisting of 8x4 optically separated segments. Deuteron beam from Ohio University Edwards Accelerator Laboratory (EAL).

doi: 10.1103/PhysRevC.106.044320
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2022PH01      Phys.Rev.Lett. 129, 172701 (2022)

V.H.Phong, S.Nishimura, G.Lorusso, T.Davinson, A.Estrade, O.Hall, T.Kawano, J.Liu, F.Montes, N.Nishimura, R.Grzywacz, K.P.Rykaczewski, J.Agramunt, D.S.Ahn, A.Algora, J.M.Allmond, H.Baba, S.Bae, N.T.Brewer, C.G.Bruno, R.Caballero-Folch, F.Calvino, P.J.Coleman-Smith, G.Cortes, I.Dillmann, C.Domingo-Pardo, A.Fijalkowska, N.Fukuda, S.Go, C.J.Griffin, J.Ha, L.J.Harkness-Brennan, T.Isobe, D.Kahl, L.H.Khiem, G.G.Kiss, A.Korgul, S.Kubono, M.Labiche, I.Lazarus, J.Liang, Z.Liu, K.Matsui, K.Miernik, B.Moon, A.I.Morales, P.Morrall, N.Nepal, R.D.Page, M.Piersa-Silkowska, V.F.E.Pucknell, B.C.Rasco, B.Rubio, H.Sakurai, Y.Shimizu, D.W.Stracener, T.Sumikama, H.Suzuki, J.L.Tain, H.Takeda, A.Tarifeno-Saldivia, A.Tolosa-Delgado

β-Delayed One and Two Neutron Emission Probabilities Southeast of 132Sn and the Odd-Even Systematics in r-Process Nuclide Abundances

NUCLEAR REACTIONS 9Be(238U, F)121Rh/122Rh/123Rh/124Rh/125Rh/123Pd/124Pd/125Pd/126Pd/127Pd/128Pd/126Ag/127Ag/128Ag/129Ag/130Ag/131Ag/129Cd/130Cd/131Cd/132Cd/133Cd/134Cd/131In/132In/133In/134In/135In/136In/134Sn/135Sn/136Sn/137Sn/138Sn/139Sn/138Sb/139Sb/140Sb/141Sb, E=345 MeV/nucleon; measured fission fragments using BigRIPS and ZeroDegree spectrometers at RIBF-RIKEN facility for separation of fragments by A/Q and Z through measurements of time-of-flight (TOF), magnetic rigidity (Bρ) and energy loss (ΔE); deduced A/Q versus Z particle identification plots.

RADIOACTIVITY 129,130,131Ag, 130,131,132,133Cd, 134Cd, 131,132,133,134,135,136In, 134,135,136,137,138,139Sn(β-), (β-n), (β-2n)[from 9Be(238U, F), E=345 MeV/nucleon]; measured implanted ions, neutrons, β, γ, (implants)β-, (implants)β(1n)- and (implants)β(2n)-correlations, T1/2 of decays of ground states using BRIKEN neutron counter with 140 3He-filled proportional counters, AIDA array of DSSSDs for implants and β decays, two Clover HPGe detectors for γ radiation, and two thick plastic scintillators; deduced T1/2, %β-n or Pn, %β-2n or P2n from simultaneous fits of β-, β-1n and β-2n-decay curves. Comparison with previous experimental results, and with theoretical predictions from quasiparticle random-phase approximation (QRPA), based on finite range droplet model (FRDM) and the relativistic Hartree-Bogoliubov (RHB) plus proton-neutron QRPA (pnQRPA).

doi: 10.1103/PhysRevLett.129.172701
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2022RA11      Phys.Rev. C 105, 064301 (2022)

B.C.Rasco, K.P.Rykaczewski, A.Fijalkowska, M.Karny, M.Wolinska-Cichocka, R.K.Grzywacz, D.W.Stracener, E.F.Zganjar, J.C.Batchelder, J.C.Blackmon, N.T.Brewer, M.P.Cooper, K.C.Goetz, J.W.Johnson, T.King, A.Laminack, J.T.Matta, K.Miernik, M.Madurga, D.Miller, M.M.Rajabali, T.Ruland, P.Shuai, M.Stepaniuk, J.Winger

Deciphering 98Nb β decay with the Modular Total Absorption Spectrometer at ORNL

RADIOACTIVITY 98Nb(β-)[from decay chains of 98Rb and 98Sr produced in 238U(p, F) at HRIBF-ORNL facility]; measured Eγ, Iγ, total absorption γ-ray spectrum using NaI(Tl)-based Modular Total Absorption Spectrometer (MTAS); deduced average γ energy per β decay, and average ν-bar; discussed impact of measured β-feeding pattern on reactor decay heat calculations and predicted detection rates of reactor ν-bar. 98Zr; measured T1/2 with 98Zr and 98Nb in equilibrium, and compared with value in the ENSDF database. 98Mo; deduced levels, β feedings to the g.s. and excited states, logft, conversion electron per β decay from the E0 transition from the first excited 0+ state in 98Mo. Comparison with β feedings and average γ energy in the ENSDF and ENDF/B-VIII.0 databases, and with previous experimental results. Relevance to the study of β- decays of abundantly produced fission products in nuclear reactors.

doi: 10.1103/PhysRevC.105.064301
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2022SH20      Phys.Rev. C 105, 054312 (2022)

P.Shuai, B.C.Rasco, K.P.Rykaczewski, A.Fijalkowska, M.Karny, M.Wolinska-Cichocka, R.K.Grzywacz, C.J.Gross, D.W.Stracener, E.F.Zganjar, J.C.Batchelder, J.C.Blackmon, N.T.Brewer, S.Go, M.Cooper, K.C.Goetz, J.W.Johnson, C.U.Jost, T.T.King, J.T.Matta, J.H.Hamilton, A.Laminack, K.Miernik, M.Madurga, D.Miller, C.D.Nesaraja, S.Padgett, S.V.Paulauskas, M.M.Rajabali, T.Ruland, M.Stepaniuk, E.H.Wang, J.A.Winger

Determination of β-decay feeding patterns of 88Rb and 88Kr using the Modular Total Absorption Spectrometer at ORNL HRIBF

RADIOACTIVITY 88Rb(β-), 88Kr(β-)[from 238U(p, F), E=40 MeV]; measured Eγ, Iγ, Eβ, Iβ; deduced β-intensities, ground state feedings in β-decay. 88Rb; deduced T1/2. Pandemonium effect free measurements. Comparison to other experimental data. Modular Total Absorption Spectrometer (MTAS) NaI(Tl) detector array at Holifield Radioactive Ion Beam Facility (HRIBF) at the Oak Ridge National Laboratory.

doi: 10.1103/PhysRevC.105.054312
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2022WU18      Phys.Rev. C 106, 064328 (2022)

J.Wu, S.Nishimura, P.-A.Soderstrom, A.Algora, J.J.Liu, V.H.Phong, Y.Q.Wu, F.R.Xu, J.Agramunt, D.S.Ahn, T.A.Berry, C.G.Bruno, J.J.Bundgaard, R.Caballero-Folch, A.C.Dai, T.Davinson, I.Dillmann, A.Estrade, A.Fijalkowska, N.Fukuda, S.Go, R.K.Grzywacz, T.Isobe, S.Kubono, G.Lorusso, K.Matsui, A.I.Morales, N.Nepal, S.E.A.Orrigo, B.C.Rasco, K.P.Rykaczewski, H.Sakurai, Y.Shimizu, D.W.Stracener, T.Sumikama, H.Suzuki, J.L.Tain, H.Takeda, A.Tarifeno-Saldivia, A.Tolosa-Delgado, M.Wolinska-Cichocka, R.Yokoyama

First observation of isomeric states in 111Zr, 113Nb, and 115Mo

NUCLEAR REACTIONS 235U(9Be, X)111mZr/113mNb/115mMo, E=345 MeV/nucleon; measured reaction products, Eγ, Iγ, (fragment)γ-coin; deduced isomeric ratios. 111Zr, 113Nb, 115Mo; deduced isomeric states energy, transition energies. 115Mo; deduced levels, relative γ-transition intensities. Large-acceptance BigRIPS and ZeroDegree spectrometers coupled with HPGe clover-type detectors at RIBF.

RADIOACTIVITY 111Zr, 113Nb, 115Mo(IT)[from 235U(9Be, X), E=345 MeV/nucleon]; measured Eγ, Iγ; deduced T1/2 for isomeric states decay, reduced transition probabilities for transitions depopulating the isomeric state by assuming different multipolarities.

doi: 10.1103/PhysRevC.106.064328
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2021BA34      Phys.Rev. C 104, 024308 (2021)

J.C.Batchelder, C.Apgar, N.T.Brewer, C.J.Gross, R.K.Grzywacz, S.Ilyushkin, M.Madurga, K.Miernik, S.W.Padgett, S.V.Paulauskas, W.A.Peters, B.C.Rasco, K.P.Rykaczewski, D.W.Stracener, J.A.Winger, M.Wolinska-Cichocka, E.F.Zganjar, D.W.Bardayan, M.E.Howard, B.Manning, M.Matos, A.J.Mendez, D.Miller, A.Ratkiewicz, E.H.Wang

Levels in 125Cd populated by the β decay of 125mAg and 125Ag

RADIOACTIVITY 125,125mAg(β-), (β-n)[from 238U(p, F), E=50 MeV from the ORIC cyclotron at the HRIBF-ORNL facility, followed by mass separation of fission fragments by a high resolution magnet]; 124Cd(β-)[from 125Cd β-n decay]; measured Eγ, Iγ, βγ- and γγ-coin, half-lives of decays of the g.s. and isomer of 125Ag, %β-n or Pn using two HPGe clover detectors for γ rays, two plastic scintillators for β particles, and 48 plastic scintillators for the detection of neutrons. 125Cd, 124In; deduced levels, J, π, multipolarity, β feedings, logft. Comparison with previously reported results.

doi: 10.1103/PhysRevC.104.024308
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2021DI04      Nucl.Data Sheets 173, 144 (2021)

P.Dimitriou, I.Dillmann, B.Singh, V.Piksaikin, K.P.Rykaczewski, J.L.Tain, A.Algora, K.Banerjee, I.N.Borzov, D.Cano-Ott, S.Chiba, M.Fallot, D.Foligno, R.Grzywacz, X.Huang, T.Marketin, F.Minato, G.Mukherjee, B.C.Rasco, A.Sonzogni, M.Verpelli, A.Egorov, M.Estienne, L.Giot, D.Gremyachkin, M.Madurga, E.A.McCutchan, E.Mendoza, K.V.Mitrofanov, M.Narbonne, P.Romojaro, A.Sanchez-Caballero, N.D.Scielzo

Development of a Reference Database for Beta-Delayed Neutron Emission

COMPILATION Z=2-87; compiled β-delayed neutron emission data; deduced total delayed neutron yields, time-dependent group parameters in 6- and 8-group representation, and aggregate delayed neutron spectra.

doi: 10.1016/j.nds.2021.04.006
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2021HA19      Phys.Lett. B 816, 136266 (2021)

O.Hall, T.Davinson, A.Estrade, J.Liu, G.Lorusso, F.Montes, S.Nishimura, V.H.Phong, P.J.Woods, J.Agramunt, D.S.Ahn, A.Algora, J.M.Allmond, H.Baba, S.Bae, N.T.Brewer, C.G.Bruno, R.Caballero-Folch, F.Calvino, P.J.Coleman-Smith, G.Cortes, I.Dillmann, C.Domingo-Pardo, A.Fijalkowska, N.Fukuda, S.Go, C.J.Griffin, R.Grzywacz, J.Ha, L.J.Harkness-Brennan, T.Isobe, D.Kahl, L.H.Khiem, G.G.Kiss, A.Korgul, S.Kubono, M.Labiche, I.Lazarus, J.Liang, Z.Liu, K.Matsui, K.Miernik, B.Moon, A.I.Morales, P.Morrall, M.R.Mumpower, N.Nepal, R.D.Page, M.Piersa, V.F.E.Pucknell, B.C.Rasco, B.Rubio, K.P.Rykaczewski, H.Sakurai, Y.Shimizu, D.W.Stracener, T.Sumikama, H.Suzuki, J.L.Tain, H.Takeda, A.Tarifeno-Saldivia, A.Tolosa-Delgado, M.Wolinska-Cichocka, R.Yokoyama

β-delayed neutron emission of r-process nuclei at the N = 82 shell closure

RADIOACTIVITY 115,116Tc, 116,117,118,119,120,121Ru, 118,119,120,121,122,123,124Rh, 121,122,123,124,125,126,127,128Pd, 124,125,126,127,128,129Ag, 127,128,129,130Cd(β-n) [from 9Be(238U, X), E=345 MeV/nucleon]; measured decay products, Eβ, Iβ, En, In; deduced β-delayed neutron emission probabilities, T1/2. RIKEN using the Advanced Implantation Detector Array (AIDA) and the BRIKEN neutron detector array.

doi: 10.1016/j.physletb.2021.136266
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2021ST14      Nucl.Instrum.Methods Phys.Res. A1012, 165593 (2021)

M.Stukel, B.C.Rasco, N.T.Brewer, P.C.F.Di Stefano, K.P.Rykaczewski, H.Davis, E.D.Lukosi, L.Hariasz, M.Constable, P.Davis, K.Dering, A.Fijalkowska, Z.Gai, K.C.Goetz, R.K.Grzywacz, J.Kostensalo, J.Ninkovic, P.Lechner, Y.Liu, M.Mancuso, C.L.Melcher, F.Petricca, C.Rouleau, P.Squillari, L.Stand, D.W.Stracener, J.Suhonen, M.Wolinska-Cichocka, I.Yavin

A novel experimental system for the KDK measurement of the 40K decay scheme relevant for rare event searches

RADIOACTIVITY 40K(EC), (β-); measured decay products, Eγ, Iγ, X-rays; deduced preliminary results for the branching ratio of the electron capture directly to the ground state of 40Ar. The KDK (Potassium (K) Decay (DK)) collaboration.

doi: 10.1016/j.nima.2021.165593
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2020FE06      Phys.Rev.Lett. 125, 062501 (2020)

M.Febbraro, R.J.deBoer, S.D.Pain, R.Toomey, F.D.Becchetti, A.Boeltzig, Y.Chen, K.A.Chipps, M.Couder, K.L.Jones, E.Lamere, Q.Liu, S.Lyons, K.T.Macon, L.Morales, W.A.Peters, D.Robertson, B.C.Rasco, K.Smith, C.Seymour, G.Seymour, M.S.Smith, E.Stech, B.Vande Kolk, M.Wiescher

New 13C(α, n)16O Cross Section with Implications for Neutrino Mixing and Geoneutrino Measurements

NUCLEAR REACTIONS 13C(α, n), E=5.2-6.4 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with experimental data, JENDL and ENDF/B evaluated libraries.

doi: 10.1103/PhysRevLett.125.062501
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2020HA03      Phys.Rev. C 101, 015804 (2020)

M.R.Hall, D.W.Bardayan, T.Baugher, A.Lepailleur, S.D.Pain, A.Ratkiewicz, S.Ahn, J.M.Allen, J.T.Anderson, A.D.Ayangeakaa, J.C.Blackmon, S.Burcher, M.P.Carpenter, S.M.Cha, K.Y.Chae, K.A.Chipps, J.A.Cizewski, M.Febbraro, O.Hall, J.Hu, C.L.Jiang, K.L.Jones, E.J.Lee, P.D.O'Malley, S.Ota, B.C.Rasco, D.Santiago-Gonzalez, D.Seweryniak, H.Sims, K.Smith, W.P.Tan, P.Thompson, C.Thornsberry, R.L.Varner, D.Walter, G.L.Wilson, S.Zhu

γ-ray spectroscopy of astrophysically important states in 39Ca

NUCLEAR REACTIONS 40Ca(3He, αγ)39Ca, E=30 MeV; Measured Eγ, Iγ, Eα, Iα, αγ-coin, reaction products using the GODDESS array (Gammasphere for γ detection and ORRUBA for particle detection) at the ATLAS-ANL facility. 39Ca; deduced levels, J, π, γ-branching ratios. 38K(p, γ)39Ca, T=0.1-0.4 GK; deduced resonance parameters, astrophysical reaction rates. Discussed impact on abundances of isotopes created at the endpoint of nova nucleosynthesis.

doi: 10.1103/PhysRevC.101.015804
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2020HA31      Phys.Rev. C 102, 045802 (2020)

M.R.Hall, D.W.Bardayan, T.Baugher, A.Lepailleur, S.D.Pain, A.Ratkiewicz, S.Ahn, J.M.Allen, J.T.Anderson, A.D.Ayangeakaa, J.C.Blackmon, S.Burcher, M.P.Carpenter, S.M.Cha, K.Y.Chae, K.A.Chipps, J.A.Cizewski, M.Febbraro, O.Hall, J.Hu, C.L.Jiang, K.L.Jones, E.J.Lee, P.D.O'Malley, S.Ota, B.C.Rasco, D.Santiago-Gonzalez, D.Seweryniak, H.Sims, K.Smith, W.P.Tan, P.Thompson, C.Thornsberry, R.L.Varner, D.Walter, G.L.Wilson, S.Zhu

19Ne level structure for explosive nucleosynthesis

NUCLEAR REACTIONS 19F(3He, t)19Ne, E=30 MeV; measured reaction products, E(t), I(t), Eγ, Iγ, (triton)γ-, and (triton)γγ-coin using ORRUBA array with Micron QQQ5 telescopes for tritons and Gammasphere array for γ rays at ATLAS-ANL facility. 19Ne; deduced levels, J, π, γ-branching ratios. Comparison with earlier experimental results and with evaluated data. 18F(p, α)15O, E(cm)<0.9 MeV; calculated astrophysical S factors, and reaction rates at temperature of 0.06 to 0.4 GK.

doi: 10.1103/PhysRevC.102.045802
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2020TA02      Phys.Rev.Lett. 124, 052502 (2020)

T.Tanaka, K.Morita, K.Morimoto, D.Kaji, H.Haba, R.A.Boll, N.T.Brewer, S.Van Cleve, D.J.Dean, S.Ishizawa, Y.Ito, Y.Komori, K.Nishio, T.Niwase, B.C.Rasco, J.B.Roberto, K.P.Rykaczewski, H.Sakai, D.W.Stracener, K.Hagino

Study of Quasielastic Barrier Distributions as a Step towards the Synthesis of Superheavy Elements with Hot Fusion Reactions

NUCLEAR REACTIONS 248Cm(22Ne, X), (26Mg, X), 238U(48Ca, X), E(cm)=165.1, 203.7 MeV; measured reaction products; deduced σ. Comparison with available data.

doi: 10.1103/PhysRevLett.124.052502
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2019AH05      Phys.Rev. C 100, 044613 (2019)

S.Ahn, D.W.Bardayan, K.L.Jones, A.S.Adekola, G.Arbanas, J.C.Blackmon, K.Y.Chae, K.A.Chipps, J.A.Cizewski, S.Hardy, M.E.Howard, R.L.Kozub, B.Manning, M.Matos, C.D.Nesaraja, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, B.C.Rasco, M.S.Smith, I.Spassova

Direct neutron capture cross section on 80Ge and probing shape coexistence in neutron-rich nuclei

NUCLEAR REACTIONS 2H(80Ge, p), (80Ge, d), E=310 MeV; measured energies and angles of light-ion ejectiles, Ep, Ip, E(d), I(d), (80Ge)p- and (80Ge)d-coin, angular distributions of ejected proton using various silicon detectors at the Holifield Radioactive Ion Beam Facility at ORNL. Proton angular distributions analyzed using adiabatic wave approximation including finite range effects (ADWAFR) using FRESCO code, and by DWBA. 81Ge; deduced levels, J, π, spectroscopic factors, configurations, region of shape coexistence around N≈50. Systematics of low-lying levels in N=49 isotones 81Ge, 83Se, 85Kr and 87Sr. Discussed implications for the magic nature of 78Ni. 80Ge(n, γ), E=0.01-3 MeV; calculated σ(E) for r-process simulations using direct-semidirect (DSD) model and the CUPIDO code.

doi: 10.1103/PhysRevC.100.044613
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2019HA08      Phys.Rev.Lett. 122, 052701 (2019)

M.R.Hall, D.W.Bardayan, T.Baugher, A.Lepailleur, S.D.Pain, A.Ratkiewicz, S.Ahn, J.M.Allen, J.T.Anderson, A.D.Ayangeakaa, J.C.Blackmon, S.Burcher, M.P.Carpenter, S.M.Cha, K.Y.Chae, K.A.Chipps, J.A.Cizewski, M.Febbraro, O.Hall, J.Hu, C.L.Jiang, K.L.Jones, E.J.Lee, P.D.O'Malley, S.Ota, B.C.Rasco, D.Santiago-Gonzalez, D.Seweryniak, H.Sims, K.Smith, W.P.Tan, P.Thompson, C.Thornsberry, R.L.Varner, D.Walter, G.L.Wilson, S.Zhu

Key 19Ne States Identified Affecting γ-Ray Emission from 18F in Novae

NUCLEAR REACTIONS 19F(3He, t)19Ne, E=30 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, S-factor, reaction rates, resonance energies. Comparison with available data.

doi: 10.1103/PhysRevLett.122.052701
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2019HA14      Phys.Rev. C 99, 035805 (2019)

M.R.Hall, D.W.Bardayan, T.Baugher, A.Lepailleur, S.D.Pain, A.Ratkiewicz, S.Ahn, J.M.Allen, J.T.Anderson, A.D.Ayangeakaa, J.C.Blackmon, S.Burcher, M.P.Carpenter, S.M.Cha, K.Y.Chae, K.A.Chipps, J.A.Cizewski, M.Febbraro, O.Hall, J.Hu, C.L.Jiang, K.L.Jones, E.J.Lee, P.D.O'Malley, S.Ota, B.C.Rasco, D.Santiago-Gonzalez, D.Seweryniak, H.Sims, K.Smith, W.P.Tan, P.Thompson, C.Thornsberry, R.L.Varner, D.Walter, G.L.Wilson, S.Zhu

New γ-ray transitions observed in 19Ne with implications for the 15O(α, γ)19Ne reaction rate

NUCLEAR REACTIONS 19F(3He, t), E=30 MeV; measured triton spectra, Eγ, Iγ, tγ- and γγ-coin using Gammasphere array for γ detection with the silicon detector array ORRUBA Dual Detectors for Experimental Structure Studies (GODDESS) at ATLAS-ANL facility. 19Ne; deduced levels, J, π, and γ-branching ratios for the decay of 4.14- and 4.20-MeV states. 15O(α, γ)19Ne, E≈18-180 keV; calculated fractional contribution of the corrected branching ratios for the 4.14 MeV, 7/2- and 4.20 MeV, 9/2- states in 19Ne to astrophysical reaction rate, which is of significance in breakout from the hot CNO cycle in type I x-ray bursts. Comparison with previous experimental values.

doi: 10.1103/PhysRevC.99.035805
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2019PH02      Phys.Rev. C 100, 011302 (2019)

V.H.Phong, G.Lorusso, T.Davinson, A.Estrade, O.Hall, J.Liu, K.Matsui, F.Montes, S.Nishimura, A.Boso, P.H.Regan, R.Shearman, Z.Y.Xu, J.Agramunt, J.M.Allmond, D.S.Ahn, A.Algora, H.Baba, N.T.Brewer, C.G.Bruno, R.Caballero-Folch, F.Calvino, M.Wolinska-Cichocka, G.Cortes, I.Dillmann, C.Domingo-Pardo, A.Gargano, S.Go, C.J.Griffin, R.K.Grzywacz, L.Harkness-Brennan, T.Isobe, A.Jungclaus, D.Kahl, L.H.Khiem, G.Kiss, A.Korgul, S.Kubono, K.Miernik, A.I.Morales, N.Nepal, M.Piersa, Zs.Podolyak, B.C.Rasco, K.P.Rykaczewski, H.Sakurai, Y.Shimizu, D.W.Stacener, T.Sumikama, H.Suzuki, H.Takeda, J.L.Tain, A.Tarifeno-Saldivia, A.Tolosa-Delgado, V.Vaquero, P.J.Woods, R.Yokoyama, C.Yuan

Observation of a 13449In85 Proton-neutron coupling "southeast" of 13250Sn82

NUCLEAR REACTIONS 9Be(238U, F)120Rh/121Rh/122Rh/123Rh/124Rh/125Rh/123Pd/124Pd/125Pd/126Pd/127Pd/128Pd/125Ag/126Ag/127Ag/128Ag/129Ag/130Ag/128Cd/129Cd/130Cd/131Cd/132Cd/133Cd/131In/132In/133In/134In/135In/136In/134Sn/135Sn/136Sn/137Sn/138Sn/139Sn/138Sb/139Sb/140Sb/141Te/142Te, E=345 MeV/nucleon; measured fission fragment yields, A/Q plot, Eγ, Iγ, (fragment)γ-coin, half-lives of isomers in 128Cd and 134In by (ion)γ(t) using BigRIPS, ZeroDegree spectrometer, and AIDA array for fragment separation and identification, and HPGe detectors for γ detection at RIBF-RIKEN. 128Cd, 130Ag, 132,134In; measured (ion)γ-coin spectra; deduced isomers in 128Cd and 134In, configurations, no evidence for isomers in 130Ag and 132In. 134In; compared Weisskopf estimated half-lives for E1, M1, E2 and M2 multipolarities for the isomeric transition in the case of bare nuclei and neutral atoms with the measured half-life, best agreement found for E2 multipolarity. 130Ag, 132,134In; calculated levels, J, π using shell model, and compared with available experimental data.

doi: 10.1103/PhysRevC.100.011302
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2019YO03      Phys.Rev. C 100, 031302(R) (2019)

R.Yokoyama, R.Grzywacz, B.C.Rasco, N.Brewer, K.P.Rykaczewski, I.Dillmann, J.L.Tain, S.Nishimura, D.S.Ahn, A.Algora, J.M.Allmond, J.Agramunt, H.Baba, S.Bae, C.G.Bruno, R.Caballero-Folch, F.Calvino, P.J.Coleman-Smith, G.Cortes, T.Davinson, C.Domingo-Pardo, A.Estrade, N.Fukuda, S.Go, C.J.Griffin, J.Ha, O.Hall, L.J.Harkness-Brennan, J.Heideman, T.Isobe, D.Kahl, M.Karny, T.Kawano, L.H.Khiem, T.T.King, G.G.Kiss, A.Korgul, S.Kubono, M.Labiche, I.Lazarus, J.Liang, J.Liu, G.Lorusso, M.Madurga, K.Matsui, K.Miernik, F.Montes, A.I.Morales, P.Morrall, N.Nepal, R.D.Page, V.H.Phong, M.Piersa, M.Prydderch, V.F.E.Pucknell, M.M.Rajabali, B.Rubio, Y.Saito, H.Sakurai, Y.Shimizu, J.Simpson, M.Singh, D.W.Stracener, T.Sumikama, R.Surman, H.Suzuki, H.Takeda, A.Tarifeno-Saldivia, S.L.Thomas, A.Tolosa-Delgado, M.Wolinska-Cichocka, P.J.Woods, X.X.Xu

Strong one-neutron emission from two-neutron unbound states in β decays of the r-process nuclei 86, 87Ga

RADIOACTIVITY 84,85,86,87Ga(β-), (β-n), (β-2n)[from 9Be(238U, F), E=345 MeV/nucleon, followed by separation and identification of fragments using the BigRIPS in-flight separator at RIBF-RIKEN facility]; measured secondary ions implanted into active stoppers made of double-sided silicon-strip detectors (DSSSDs), neutrons by BRIKEN array of 3He counters, WAS3ABi for β and ion detection, and γ rays by two clover-type HPGe detectors, (ions)βn-coin, half-lives of decays of 84,85,86,87Ga; deduced decay curves, %β-n (P1n) and %β-2n (P2n). Comparison with shell-model and QRPA calculations. Relevance to r-process modeling.

doi: 10.1103/PhysRevC.100.031302
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2018RA27      Nucl.Instrum.Methods Phys.Res. A911, 79 (2018)

B.C.Rasco, N.T.Brewer, R.Yokoyama, R.Grzywacz, K.P.Rykaczewski, A.Tolosa-Delgado, J.Agramunt, J.L.Tain, A.Algora, O.Hall, C.Griffin, T.Davinson, V.H.Phong, J.Liu, S.Nishimura, G.G.Kiss, N.Nepal, A.Estrade

The ORNL analysis technique for extracting β-delayed multi-neutron branching ratios with BRIKEN

RADIOACTIVITY 77Cu(β-), (β-n); measured (implants)(neutron) correlations, %β-n or P1n at RIKEN; discussed statistical and systematic uncertainties, and methods to determine multi-neutron β-delayed branching ratios from BRIKEN setup. Comparison with literature values.

doi: 10.1016/j.nima.2018.09.121
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2018TA20      Acta Phys.Pol. B49, 417 (2018)

J.L.Tain, J.Agramunt, D.S.Ahn, A.Algora, J.M.Allmond, H.Baba, S.Bae, N.T.Brewer, R.Caballero-Folch, F.Calvino, P.J.Coleman-Smith, G.Cortes, T.Davinson, I.Dillmann, C.Domingo-Pardo, A.Estrade, N.Fukuda, S.Go, C.Griffin, R.Grzywacz, J.Ha, O.Hall, L.Harkness-Brennan, T.Isobe, D.Kahl, M.Karny, G.G.Kiss, M.Kogimtzis, A.Korgul, S.Kubono, M.Labiche, I.Lazarus, J.Lee, J.Liu, G.Lorusso, K.Matsui, K.Miernik, F.Montes, B.Moon, A.I.Morales, N.Nepal, S.Nishimura, R.D.Page, Z.Podolyak, V.F.E.Pucknell, B.C.Rasco, P.H.Regan, A.Riego, B.Rubio, K.P.Rykaczewski, Y.Saito, H.Sakurai, Y.Shimizu, J.Simpson, P.A.Soderstrom, D.W.Stracener, T.Sumikama, R.Surman, H.Suzuki, M.Takechi, H.Takeda, A.Tarifeno-Saldivia, S.L.Thomas, A.Tolosa-Delgado, V.H.Phong, P.Woods

The BRIKEN Project: Extensive Measurements of β-delayed Neutron Emitters for the Astrophysical r Process

doi: 10.5506/aphyspolb.49.417
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2018TR07      Phys.Rev. C 98, 034309 (2018)

J.L.Tracy, J.A.Winger, B.C.Rasco, U.Silwal, D.P.Siwakoti, K.P.Rykaczewski, R.Grzywacz, J.C.Batchelder, C.R.Bingham, N.T.Brewer, L.Cartegni, A.A.Ciemny, A.Fijalkowska, C.J.Gross, C.Jost, M.Karny, K.Kolos, A.Korgul, W.Krolas, Y.Liu, M.Madurga, C.Mazzocchi, A.J.Mendez, K.Miernik, D.Miller, S.Padgett, S.V.Paulauskas, D.W.Stracener, M.Wolinska-Cichocka, M.M.Rajabali, E.F.Zganjar

Updated β-decay measurement of neutron-rich 74Cu

RADIOACTIVITY 74Cu(β-)[from U(p, F), E=54 MeV at the Holifield Radioactive Ion Beam Facility HRIBF-ORNL]; measured Eγ, Iγ, βγ-coin, γγ-coin and βγγ-coin. 74Zn; deduced levels, J, π, β feedings, logft, simulations of total absorption γ spectrum (TAGS) from the γ-ray data, and pandemonium effect in 74Cu to 74Zn decay. Comparison with previous experimental values, and with shell model predictions.

doi: 10.1103/PhysRevC.98.034309
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2017AF02      Phys.Rev. C 96, 035801 (2017)

L.Afanasieva, J.C.Blackmon, C.M.Deibel, J.Lai, L.E.Linhardt, B.C.Rasco, D.Seweryniak, M.Alcorta, M.P.Carpenter, J.A.Clark, C.R.Hoffman, R.V.F.Janssens, S.Zhu

γ spectroscopy of states in 32Cl relevant for the 31S(p, γ)32Cl reaction rate

NUCLEAR REACTIONS 10B(24Mg, 2n)32Cl, E=75 MeV; measured Eγ, Iγ, γγ-, (32Cl recoils)γ-, and (32Cl recoils)γγ-coin using Fragment Mass Analyzer (FMA) and Gammasphere array at ATLAS-ANL facility. 32Cl; deduced levels, J, π, energies, strengths, σ, Γγ and Γp of resonances. 31S(p, γ)32Cl, T=0.1-1.0 GK; deduced astrophysical reaction rates.

doi: 10.1103/PhysRevC.96.035801
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2017FI06      Phys.Rev.Lett. 119, 052503 (2017)

A.Fijalkowska, M.Karny, K.P.Rykaczewski, B.C.Rasco, R.Grzywacz, C.J.Gross, M.Wolinska-Cichocka, K.C.Goetz, D.W.Stracener, W.Bielewski, R.Goans, J.H.Hamilton, J.W.Johnson, C.Jost, M.Madurga, K.Miernik, D.Miller, S.W.Padgett, S.V.Paulauskas, A.V.Ramayya, E.F.Zganjar

Impact of Modular Total Absorption Spectrometer measurements of β decay of fission products on the decay heat and reactor ν(bar)e flux calculation

RADIOACTIVITY 86Br, 89,90Kr, 89,90,92Rb, 139Xe, 142Cs(β-) [from 238U(p, X), E=40 MeV]; measured decay products, Eγ, Iγ, Eβ, Iβ; deduced a substantial increase in β feeding to high excited states in all daughter isotopes in comparison to earlier data, reduction of the reference reactor ν-bar flux.

doi: 10.1103/PhysRevLett.119.052503
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2017KU27      Phys.Rev. C 96, 045812 (2017)

S.A.Kuvin, J.Belarge, L.T.Baby, J.Baker, I.Wiedenhover, P.Hoflich, A.Volya, J.C.Blackmon, C.M.Deibel, H.E.Gardiner, J.Lai, L.E.Linhardt, K.T.Macon, B.C.Rasco, N.Quails, K.Colbert, D.L.Gay, N.Keeley

Measurement of 17F (d, n) 18Ne and the impact on the 17F (p, γ) 18Ne reaction rate for astrophysics

NUCLEAR REACTIONS 2H(17F, n)18Ne, E=95.5 MeV, [secondary 17F beam from 2H(16O, n) primary reaction using RESOLUT RIB facility at the accelerator Laboratory of Florida State University]; measured reaction products, time-of-flight, E(n), I(n), E(p), I(p), Eγ, γγ-, (particle)γ-, and (17F)p-coin using RESONEUT detector system. 18Ne; deduced center-of-mass resonance-energy spectrum from invariant-mass analysis, levels, proton resonances, J, π, σ, spectroscopic factors, Γp, configurations, asymptotic normalization coefficients (ANCs). Coupled reaction-channel (CRC) calculation. 17F(p, γ), T9=0.04-0.9; deduced direct-capture reaction rates for astrophysical hot CNO cycles in novas. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.96.045812
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2017RA06      Acta Phys.Pol. B48, 507 (2017)

B.C.Rasco, A.Fijalkowska, K.P.Rykaczewski, M.Wolinska-Cichocka, M.Karny, R.K.Grzywacz, K.C.Goetz, C.J.Gross, D.W.Stracener, E.F.Zganjar, J.C.Batchelder, J.C.Blackmon, N.T.Brewer, T.King, K.Miernik, S.V.Paulauskas, M.M.Rajabali, J.A.Winger

β Decays of 92Rb, 96gsY, and 142Cs Measured with the Modular Total Absorption Spectrometer and the Influence of γ Multiplicity on Total Absorption Spectrometry Measurements

RADIOACTIVITY 92Rb, 96Y, 142Cs(β-); measured Eγ, Iγ, Eβ, Iβ, En, In using MTAS (Modular Total Absorption Spectrometer); deduced γ multiplicity, ν-bar energy spectrum corrections, β-feeding intensities of individual level decays to the total MTAS data. Results for ν-bar vs energy compared with 2007 ENSDF data.

doi: 10.5506/APhysPolB.48.507
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2017RA10      Phys.Rev. C 95, 054328 (2017)

B.C.Rasco, K.P.Rykaczewski, A.Fijalkowska, M.Karny, M.Wolinska-Cichocka, R.K.Grzywacz, C.J.Gross, D.W.Stracener, E.F.Zganjar, J.C.Blackmon, N.T.Brewer, K.C.Goetz, J.W.Johnson, C.U.Jost, J.H.Hamilton, K.Miernik, M.Madurga, D.Miller, S.Padgett, S.V.Paulauskas, A.V.Ramayya, E.H.Spejewski

Complete β-decay pattern for the high-priority decay-heat isotopes 137I and 137Xe determined using total absorption spectroscopy

RADIOACTIVITY 137I, 137Xe(β-)[from U(p, F), E=50 MeV]; 137I(β-n); measured Eγ, Iγ, total absorption gamma-ray spectra using Modular Total Absorption Spectrometer (MTAS) at ORNL; deduced beta-delayed neutron spectrum, beta-delayed neutron emission probability for 137I decay, Iβ feedings, ratio of MTAS measured γ decay heat to calculated γ decay heat for thermal neutrons+235U. Comparison with the evaluated data in the ENSDF database at NNDC.

doi: 10.1103/PhysRevC.95.054328
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2016BE32      Phys.Rev.Lett. 117, 182701 (2016)

J.Belarge, S.A.Kuvin, L.T.Baby, J.Baker, I.Wiedenhover, P.Hoflich, A.Volya, J.C.Blackmon, C.M.Deibel, H.E.Gardiner, J.Lai, L.E.Linhardt, K.T.Macon, E.Need, B.C.Rasco, N.Quails, K.Colbert, D.L.Gay, N.Keeley

Experimental Investigation of the 19Ne(p, γ)20Na Reaction Rate and Implications for Breakout from the Hot CNO Cycle

NUCLEAR REACTIONS 2H(19Ne, n), E=86 MeV; measured reaction products, Ep, Ip; deduced energy levels, J, π, properties of low-lying resonances, astrophysical reaction rates. Comparison with available data.

doi: 10.1103/PhysRevLett.117.182701
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2248. Data from this article have been entered in the XUNDL database. For more information, click here.


2016KA65      Nucl.Instrum.Methods Phys.Res. A836, 83 (2016)

M.Karny, K.P.Rykaczewski, A.Fijalkowska, B.C.Rasco, M.Wolinska-Cichocka, R.K.Grzywacz, K.C.Goetz, D.Miller, E.F.Zganjar

Modular total absorption spectrometer

RADIOACTIVITY 90Y(β-); measured decay products, Eβ, Iβ; deduced β-spectra. Comparison with GEANT4 calculations.

doi: 10.1016/j.nima.2016.08.046
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2016MA50      Phys.Rev.Lett. 117, 092502 (2016)

M.Madurga, S.V.Paulauskas, R.Grzywacz, D.Miller, D.W.Bardayan, J.C.Batchelder, N.T.Brewer, J.A.Cizewski, A.Fijalkowska, C.J.Gross, M.E.Howard, S.V.Ilyushkin, B.Manning, M.Matos, A.J.Mendez, II, K.Miernik, S.W.Padgett, W.A.Peters, B.C.Rasco, A.Ratkiewicz, K.P.Rykaczewski, D.W.Stracener, E.H.Wang, M.Wolinska-Cichocka, E.F.Zganjar

Evidence for Gamow-Teller Decay of 78Ni Core from Beta-Delayed Neutron Emission Studies

RADIOACTIVITY 83,84Ga(β-), (β-n) [from 238U(p, X), E not given]; measured decay products, En, In, Eγ, Iγ. 78Ni; deduced β-decay strength, strong multineutron emission probabilities, β-decay lifetimes. Shell model calculations, neutron time-of-flight technique.

doi: 10.1103/PhysRevLett.117.092502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2016RA25      Phys.Rev.Lett. 117, 092501 (2016)

B.C.Rasco, M.Wolinska-Cichocka, A.Fijalkowska, K.P.Rykaczewski, M.Karny, R.K.Grzywacz, K.C.Goetz, C.J.Gross, D.W.Stracener, E.F.Zganjar, J.C.Batchelder, J.C.Blackmon, N.T.Brewer, S.Go, B.Heffron, T.King, J.T.Matta, K.Miernik, C.D.Nesaraja, S.V.Paulauskas, M.M.Rajabali, E.H.Wang, J.A.Winger, Y.Xiao, C.J.Zachary

Decays of the Three Top Contributors to the Reactor ν(bar)e High-Energy Spectrum, 92Rb, 96gsY, and 142Cs, Studied with Total Absorption Spectroscopy

RADIOACTIVITY 92Rb, 96Y, 142Cs(β-), (β-n) [from 238U(p, X), E=40 MeV]; measured decay products, Eγ, Iγ; deduced β-feeding intensity, impact on a reactor anti-neutrino spectrum. Comparison with available data.

doi: 10.1103/PhysRevLett.117.092501
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2014FI09      Acta Phys.Pol. B45, 545 (2014)

A.Fijalkowska, M.Karny, K.P.Rykaczewski, M.Wolinska-Cichocka, R.Grzywacz, C.J.Gross, J.W.Johnson, B.C.Rasco, E.F.Zganjar, D.W.Stracener, L.Cartegni, K.C.Goetz, R.Goans, C.Jost, M.Madurga, K.Miernik, D.Miller, S.W.Padgett, S.V.Paulauskas, M.Al-Shudifat, E.Spejewski, J.H.Hamilton, A.V.Ramayya

First Results from the Modular Total Absorption Spectrometer at the HRIBF

RADIOACTIVITY 86Br(β-); measured decay products, Eγ, Iγ; deduced γ-ray energies. Comparison with ENSDF database.

doi: 10.5506/APhysPolB.45.545
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2014FI11      Nucl.Data Sheets 120, 26 (2014)

A.Fijalkowska, M.Karny, K.P.Rykaczewski, M.Wolinska-Cichocka, R.Grzywacz, C.J.Gross, J.W.Johnson, B.C.Rasco, E.F.Zganjar, D.W.Stracener, C.Jost, K.C.Goetz, R.Goans, E.Spejewski, L.Cartegni, M.Madurga, K.Miernik, D.Miller, S.W.Padgett, S.V.Paulauskas, M.Al-Shudifat, J.H.Hamilton, A.V.Ramayya

First Results from the Modular Total Absorption Spectrometer at the HRIBF

RADIOACTIVITY 139Xe, 89Kr(β-) [from 238U(p, X), E=40 MeV]; measured decay products, Eγ, Iγ, Eβ, Iβ, β-γ-coin.; deduced β-feeding intensity, level structure, average electromagnetic energy released per decay.

doi: 10.1016/j.nds.2014.06.132
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2014WO01      Nucl.Data Sheets 120, 22 (2014)

M.Wolinska-Cichocka, K.P.Rykaczewski, A.Fijalkowska, M.Karny, R.K.Grzywacz, C.J.Gross, J.W.Johnson, B.C.Rasco, E.F.Zganjar

Modular Total Absorption Spectrometer at the HRIBF (ORNL, Oak Ridge)

RADIOACTIVITY 142Ba, 142La(β-); measured decay products, Eγ, Iγ, Eβ, Iβ, β-γ-coin.; deduced discrepancy in the β feeding, level structure.

doi: 10.1016/j.nds.2014.06.131
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2012LI60      J.Phys.:Conf.Ser. 403, 012036 (2012)

L.E.Linhardt, L.Baby, D.W.Bardayan, J.C.Blackmon, H.Gardiner, E.Johnson, E.Koschiy, M.T.Macon, M.Matos, B.C.Rasco, G.Rogachev, D.Santiago-Gonzalez, I.Wiedenhoever

Measurement of 17F + p reactions with ANASEN

NUCLEAR REACTIONS 1H(17O, α), E(cm)=1.8-3 MeV; 1H(17F, α), (17F, p), E=55 MeV; measured reaction products, Ep, Ip, Eα, Iα. 14N, 14O, 17F; deduced yields, resonances. R-matrix fit. The Array for Nuclear Astrophysics Studies with Exotic Nuclei (ANASEN), RESOLUT facility at FSU.

doi: 10.1088/1742-6596/403/1/012036
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