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NSR database version of April 25, 2024.

Search: Author = A.Herlert

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2023NI10      Phys.Rev.Lett. 131, 222503 (2023)

L.Nies, L.Canete, D.D.Dao, S.Giraud, A.Kankainen, D.Lunney, F.Nowacki, B.Bastin, M.Stryjczyk, P.Ascher, K.Blaum, R.B.Cakirli, T.Eronen, P.Fischer, M.Flayol, V.Girard Alcindor, A.Herlert, A.Jokinen, A.Khanam, U.Koster, D.Lange, I.D.Moore, M.Muller, M.Mougeot, D.A.Nesterenko, H.Penttila, C.Petrone, I.Pohjalainen, A.de Roubin, V.Rubchenya, Ch.Schweiger, L.Schweikhard, M.Vilen, J.Aysto

Further Evidence for Shape Coexistence in ⁷⁹Zn^m near Doubly Magic ⁷⁸Ni

ATOMIC MASSES ⁷⁹Zn; measured frequencies, TOF; deduced the excitation energy of the 1/2+ isomer, the bandhead of a low-lying deformed structure akin to a predicted low-lying deformed band, shape coexistence. Comparison with state-of-the-art shell-model diagonalizations, complemented with discrete nonorthogonal shell-model calculations. The time-of-flight ion cyclotron resonance (TOF-ICR) method, the JYFLTRAP double Penning trap at the ion guide isotope separator on-line (IGISOL) facility in Jyvaskyla (Finland), and the multi-reflection time-of-flight mass spectrometer (MR-TOF MS) of ISOLTRAP at ISOLDE at CERN (Switzerland).

doi: 10.1103/PhysRevLett.131.222503
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2020KU19      Nucl.Phys. A1002, 121990 (2020)

I.Kulikov, A.Algora, D.Atanasov, P.Ascher, K.Blaum, R.B.Cakirli, A.Herlert, W.J.Huang, J.Karthein, Yu.A.Litvinov, D.Lunney, V.Manea, M.Mougeot, L.Schweikhard, A.Welker, F.Wienholtz

Masses of short-lived ⁴⁹Sc, ⁵⁰Sc, ⁷⁰As, ⁷³Br and stable ¹⁹⁶Hg nuclides

ATOMIC MASSES ^49,50Sc, ⁷⁰As, ⁷³Br, ¹⁹⁶Hg; measured frequencies, time of flight; deduced mass excesses. Comparison with AME2016 evaluation.

doi: 10.1016/j.nuclphysa.2020.121990
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2020MA09      Phys.Rev.Lett. 124, 092502 (2020)

V.Manea, J.Karthein, D.Atanasov, M.Bender, K.Blaum, T.E.Cocolios, S.Eliseev, A.Herlert, J.D.Holt, W.J.Huang, Y.A.Litvinov, D.Lunney, J.Menendez, M.Mougeot, D.Neidherr, L.Schweikhard, A.Schwenk, J.Simonis, A.Welker, F.Wienholtz, K.Zuber

First Glimpse of the N=82 Shell Closure below Z=50 from Masses of Neutron-Rich Cadmium Isotopes and Isomers

ATOMIC MASSES ^{124,126,127,127m,128,129,129m,131,132}Cd; measured mass excesses using phase-imaging ion cyclotron-resonance (PI-ICR) method with the ISOLTRAP spectrometer at ISOLDE-CERN. Cd isotopes were produced in U(p, F), E=1.4 GeV reaction followed by separation of fission fragments using ISOLDE High-resolution separator. Comparison with literature data in AME2016 evaluation, and with large-scale shell-model, mean-field, beyond-mean-field, and ab initio valence-space in-medium similarity renormalization group (VS-IMSRG) calculations. Systematics of S(n) for N=81, 83 and Z=48-68, and for two-neutron shell gaps for N=82, Z=42-70 nuclei.

doi: 10.1103/PhysRevLett.124.092502
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2020MO25      Phys.Rev. C 102, 014301 (2020)

M.Mougeot, D.Atanasov, C.Barbieri, K.Blaum, M.Breitenfeld, A.de Roubin, T.Duguet, S.George, F.Herfurth, A.Herlert, J.D.Holt, J.Karthein, D.Lunney, V.Manea, P.Navratil, D.Neidherr, M.Rosenbusch, L.Schweikhard, A.Schwenk, V.Soma, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber

Examining the N=28 shell closure through high-precision mass measurements of ^46-48Ar

ATOMIC MASSES ^46,47,48Ar; measured Ramsey-type time-of-flight ion-cyclotron-resonances (TOF-ICR), mass excesses using the ISOLTRAP Penning trap mass spectrometer at CERN-ISOLDE. Comparison with previous experimental results, and with AME2016 and AME2012 evaluations. Radioactive argon isotopes produced in U(p, F), E=1.4 GeV reaction, and separated using ISOLTRAP on-line mass spectrometer and the ISOLDE High-Resolution Separator (HRS). Comparison with ab initio calculations using the valence space in-medium similarity renormalization group (VS-IMSRG) with self-consistent Green's function approach, and with the predictions from the UNEDF0 density functional, SDPF-U shell model. Systematics of S(2n) and pairing gaps in N=24-32 S, Cl, Ar, K, and Ca isotopes.

doi: 10.1103/PhysRevC.102.014301
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2019HU15      Eur.Phys.J. A 55, 96 (2019)

W.J.Huang, D.Atanasov, G.Audi, K.Blaum, R.B.Cakirli, A.Herlert, M.Kowalska, S.Kreim, Yu.A.Litvinov, D.Lunney, V.Manea, M.Mougeot, M.Rosenbusch, L.Schweikhard, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber

Evaluation of high-precision atomic masses of A ∼ 50-80 and rare-earth nuclides measured with ISOLTRAP

NUCLEAR REACTIONS Ta, U(p, x), E=1.4 GeV; measured reactions on thick, heated target[U in the form of uranium carbide] using Penning-trap spectrometer ISOLTRAP. ^{52,53,54,55,56,57}Cr, ⁵⁵Mn, ^56,59Fe, ⁵⁹Co, ^75,77,78,79Ga, ¹⁴⁰Ce, ¹⁴⁰Nd, ¹⁵⁶Dy, ¹⁶⁰Yb, ^168mLu, ¹⁷⁸Yb; deduced mass excess. Compared with AME2012, suggested combined mass excess value.

doi: 10.1140/epja/i2019-12775-5
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2017AT01      J.Phys.(London) G44, 044004 (2017)

D.Atanasov, D.Beck, K.Blaum, C.Borgmann, R.B.Cakirli, T.Eronen, S.George, F.Herfurth, A.Herlert, M.Kowalska, S.Kreim, Y.A.Litvinov, D.Lunney, V.Manea, D.Neidherr, M.Rosenbusch, L.Schweikhard, F.Wienholtz, R.N.Wolf, K.Zuber

Precision mass measurements of cesium isotopes-new entries in the ISOLTRAP chronicles

ATOMIC MASSES ^{123,146,147,148}Cs [from U(p, X)¹⁴⁸Cs/¹⁴⁷Cs/¹⁴⁶Cs/¹³²Cs, E=1.4 GeV]; measured the time-of-flight resonances; deduced time-of- flight ion-cyclotron resonance spectrum, mass excess. Comparison with AME2012 evaluation.

doi: 10.1088/1361-6471/aa5a20
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2017RA15      Phys.Rev.Lett. 119, 122501 (2017)

P.C.-O.Ranitzsch, C.Hassel, M.Wegner, D.Hengstler, S.Kempf, A.Fleischmann, C.Enss, L.Gastaldo, A.Herlert, K.Johnston

Characterization of the ¹⁶³Ho Electron Capture Spectrum: A Step Towards the Electron Neutrino Mass Determination

RADIOACTIVITY ¹⁶³Ho(EC); measured decay products; deduced decay spectrum, Q-value. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.119.122501
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2016FI09      Eur.Phys.J. A 52, 206 (2016)

P.Finlay, M.Breitenfeldt, T.Porobic, E.Wursten, G.Ban, M.Beck, C.Couratin, X.Fabian, X.Flechard, P.Friedag, P.Friedag, F.Gluck, A.Herlert, A.Knecht, V.Y.Kozlov, E.Lienard, G.Soti, M.Tandecki, E.Traykov, S.Van Gorp, Ch.Weinheimer, D.Zakoucky, N.Severijns

First high-statistics and high-resolution recoil-ion data from the WITCH retardation spectrometer

doi: 10.1140/epja/i2016-16206-y
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2016PR08      Phys.Rev. C 94, 064316 (2016)

Pragati, A.Y.Deo, Zs.Podolyak, P.M.Walker, A.Algora, B.Rubio, J.Agramunt, L.M.Fraile, N.Al-Dahan, N.Alkhomashi, J.A.Briz, M.E.Estevez Aguado, G.Farrelly, W.Gelletly, A.Herlert, U.Koster, A.Maira

Decay of the N=126, ²¹³Fr nucleus

RADIOACTIVITY ²¹³Fr(α), (EC), (β⁺)[from U(p, X), E=1.4 GeV pulsed beam at ISOLDE-CERN facility]; measured Eγ, Iγ, (x ray)γ- and γγ-coin using HPGe detectors, conversion electrons, (ce)(x ray)-coin using a Mini-Orange magnetic spectrometer and a Si(Li) detector, half-life of ²¹³Fr decay. ²⁰⁹At, ²¹³Rn; deduced levels, J, π, α and ϵ+β⁺ feedings, α-hindrance factors and logft values. Comparison of level structure with shell-model calculations.

doi: 10.1103/PhysRevC.94.064316
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2014BO26      Phys.Rev. C 90, 044307 (2014)

Ch.Bohm, Ch.Borgmann, G.Audi, D.Beck, K.Blaum, M.Breitenfeldt, R.B.Cakirli, T.E.Cocolios, S.Eliseev, S.George, F.Herfurth, A.Herlert, M.Kowalska, S.Kreim, D.Lunney, V.Manea, E.Minaya Ramirez, S.Naimi, D.Neidherr, M.Rosenbusch, L.Schweikhard, J.Stanja, M.Wang, R.N.Wolf, K.Zuber

Evolution of nuclear ground-state properties of neutron-deficient isotopes around Z=82 from precision mass measurements

ATOMIC MASSES ^{184,186,190m,193m,194,194m,195,195m,198,198m}Tl, ^202,208Pb, ^207,208Fr, ²²⁴Ra; measured cyclotron frequencies high-precision mass excesses using Penning-trap ISOLTRAP at ISOLDE/CERN; deduced S(2n), S(2p), pairing gap parameter, odd-even effect. Isotopes produced by impinging a 1.4-GeV proton beam on a thick, high-temperature uranium carbide (UC_x) target. Comparison with other experimental results, AME-03, AME-12 evaluations, and microscopic calculations assuming spherical shape of the ground states. Systematics of pairing gaps, S(2p), S(2n), and excitation energy of the (9/2-) isomers for N=96-124 Au and Tl nuclei. Analyzed gradual development of collectivity with proton removal in Z=82.

doi: 10.1103/PhysRevC.90.044307
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2014VA12      Phys.Rev. C 90, 025502 (2014)

S.Van Gorp, M.Breitenfeldt, M.Tandecki, M.Beck, P.Finlay, P.Friedag, F.Gluck, A.Herlert, V.Kozlov, T.Porobic, G.Soti, E.Traykov, F.Wauters, Ch.Weinheimer, D.Zakoucky, N.Severijns

First β-ν correlation measurement from the recoil-energy spectrum of Penning trapped ³⁵Ar ions

RADIOACTIVITY ³⁵Ar(β⁺)[from Ca(p, X), E=1.4 GeV]; measured recoil (³⁵Cl) ion energy spectrum, βν(θ) using REXTRAP, WITCH systems at ISOLDE-CERN facility; deduced beta-neutrino correlation coefficient 'a' and compared with predicted value from Standard model. SIMBUCA simulation. Search for exotic currents in weak interactions.

doi: 10.1103/PhysRevC.90.025502
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2013KR15      Nucl.Instrum.Methods Phys.Res. B317, 492 (2013)

S.Kreim, D.Atanasov, D.Beck, K.Blaum, Ch.Bohm, Ch.Borgmann, M.Breitenfeldt, T.E.Cocolios, D.Fink, S.George, A.Herlert, A.Kellerbauer, U.Koster, M.Kowalska, D.Lunney, V.Manea, E.Minaya Ramirez, S.Naimi, D.Neidherr, T.Nicol, R.E.Rossel, M.Rosenbusch, L.Schweikhard, J.Stanja, F.Wienholtz, R.N.Wolf, K.Zuber

Recent exploits of the ISOLTRAP mass spectrometer

ATOMIC MASSES ¹⁹¹Au; measured time-of-flight ion-cyclotron resonance spectra; deduced mass excess. Comparison with available data.

doi: 10.1016/j.nimb.2013.07.072
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2013MA81      Phys.Rev. C 88, 054322 (2013)

V.Manea, D.Atanasov, D.Beck, K.Blaum, C.Borgmann, R.B.Cakirli, T.Eronen, S.George, F.Herfurth, A.Herlert, M.Kowalska, S.Kreim, Yu.A.Litvinov, D.Lunney, D.Neidherr, M.Rosenbusch, L.Schweikhard, F.Wienholtz, R.N.Wolf, K.Zuber

Collective degrees of freedom of neutron-rich A≈100 nuclei and the first mass measurement of the short-lived nuclide ¹⁰⁰Rb

ATOMIC MASSES ^98,99,100Rb; measured time-of-flight ion-cyclotron resonance, mass excesses using ISOLTRAP at ISOLDE-CERN facility. Comparison with AME-12 evaluation. No evidence found for isomer in ⁹⁸Rb.

NUCLEAR STRUCTURE Z=36-44, N=48-65; calculated S(2n), mean-square charge radii, and energies of octupole correlations using HFB theory with SLy4 and Gogny-D1S potentials. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.054322
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2013ST25      Phys.Rev. C 88, 054304 (2013)

J.Stanja, Ch.Borgmann, J.Agramunt, A.Algora, D.Beck, K.Blaum, Ch.Bohm, M.Breitenfeldt, T.E.Cocolios, L.M.Fraile, F.Herfurth, A.Herlert, M.Kowalska, S.Kreim, D.Lunney, V.Manea, E.Minaya Ramirez, S.Naimi, D.Neidherr, M.Rosenbusch, L.Schweikhard, G.Simpson, F.Wienholtz, R.N.Wolf, K.Zuber

Mass spectrometry and decay spectroscopy of isomers across the Z=82 shell closure

ATOMIC MASSES ^190mTl, ¹⁹⁴Tl, ^194mTl, ¹⁹⁸At; measured time-of-flight ion cyclotron (TOF-ICR) resonances, mass excesses using RILIS and ISOLTRAP at ISOLDE-CERN facility; deduced level energies, J, π for ground states and isomers, Q values for decays. ¹⁹⁰Tl, ¹⁹⁴Bi, ^194mBi, ^198mAt, ²⁰²Fr, ^202mFr, ²⁰⁶Ac, ^206mAc; deduced mass excesses in α-decay chains using measured mass values for 7(+) state in ^190mTl and (3+) in ¹⁹⁸At. Comparison with AME-03 data. Discussed hyperfine structure for ^198,198mAt and state assignments from another experiment at ISOLTRAP-ISOLDE-CERN facility.

RADIOACTIVITY ^190,194Tl(β^-); measured Eγ, βγ-coin correlated with implants, half-lives of parent states, Q values for decays. Systematics of levels, J, π, μ in isomeric states of ^{184,186,188,190,192,194,196,198,200,202,204}Tl.

doi: 10.1103/PhysRevC.88.054304
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2012FI01      Phys.Rev.Lett. 108, 062502 (2012)

D.Fink, J.Barea, D.Beck, K.Blaum, Ch.Bohm, Ch.Borgmann, M.Breitenfeldt, F.Herfurth, A.Herlert, J.Kotila, M.Kowalska, S.Kreim, D.Lunney, S.Naimi, M.Rosenbusch, S.Schwarz, L.Schweikhard, F.Simkovic, J.Stanja, K.Zuber

Q Value and Half-Lives for the Double-β-Decay Nuclide ¹¹⁰Pd

RADIOACTIVITY ¹¹⁰Pd(2β^-); measured resonance frequencies;deduced precise Q-value. Comparison with AME2003 atomic mass evaluation, phase-space factor calculations.

doi: 10.1103/PhysRevLett.108.062502
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2012HE13      Eur.Phys.J. A 48, 97 (2012)

A.Herlert, S.Van Gorp, D.Beck, K.Blaum, M.Breitenfeldt, R.B.Cakirli, S.George, U.Hager, F.Herfurth, A.Kellerbauer, D.Lunney, R.Savreux, L.Schweikhard, C.Yazidjian

Recoil-ion trapping for precision mass measurements

ATOMIC MASSES ^{56,57,58,58m,59,60,60m,61,62,62m,63}Mn; measured frequency ratio; deduced mass.

doi: 10.1140/epja/i2012-12097-2
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2012NA15      Phys.Rev. C 86, 014325 (2012)

S.Naimi, G.Audi, D.Beck, K.Blaum, Ch.Bohm, Ch.Borgmann, M.Breitenfeldt, S.George, F.Herfurth, A.Herlert, A.Kellerbauer, M.Kowalska, D.Lunney, E.Minaya-Ramirez, D.Neidherr, M.Rosenbusch, L.Schweikhard, R.N.Wolf, K.Zuber

Surveying the N=40 island of inversion with new manganese masses

ATOMIC MASSES ⁴⁸Ti, ^{55,57,58,58m,59,60,60m,61,62,62m,63,64,65,66}Mn, ^61,62,63Fe; measured frequency ratio using RILIS facility and ISOLTRAP mass spectrometer at CERN facility, with reference to frequencies for ³⁹K, TiO, ⁵⁵Mn and ⁸⁵Rb; deduced and evaluated mass excesses and compared with AME-2003. Z=24-36, N=30-52; systematics of S(2n) values. Z=25-26, N=29-40; systematics of neutron pairing gaps. Z=25, N=28-41; systematics of S(n) values. Proposed collectivity around N=40, and island of inversion near ⁶³Mn.

doi: 10.1103/PhysRevC.86.014325
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2012TO11      Phys.Scr. T150, 014040 (2012)

H.Tornqvist, C.Sotty, G.Georgiev, M.Hass, A.Herlert, M.Kowalska, T.Nilsson, J.Pakarinen, F.Wenander

Implementation and evaluation of tilted foils polarization at REX-ISOLDE

doi: 10.1088/0031-8949/2012/T150/014040
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2011BE16      Eur.Phys.J. A 47, 45 (2011)

M.Beck, S.Coeck, V.Yu.Kozlov, M.Breitenfeldt, P.Delahaye, P.Friedag, F.Gluck, M.Herbane, A.Herlert, I.S.Kraev, J.Mader, M.Tandecki, S.Van Gorp, F.Wauters, Ch.Weinheimer, F.Wenander, N.Severijns, and the ISOLDE Collaboration

First detection and energy measurement of recoil ions following beta decay in a Penning trap with the WITCH experiment

RADIOACTIVITY ¹²⁴In(β^-); measured decay products, recoil ions; deduced recoil energy spectrum. Penning trap measurements.

doi: 10.1140/epja/i2011-11045-0
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2010BR02      Phys.Rev. C 81, 034313 (2010)

M.Breitenfeldt, Ch.Borgmann, G.Audi, S.Baruah, D.Beck, K.Blaum, Ch.Bohm, R.B.Cakirli, R.F.Casten, P.Delahaye, M.Dworschak, S.George, F.Herfurth, A.Herlert, A.Kellerbauer, M.Kowalska, D.Lunney, E.Minaya-Ramirez, S.Naimi, D.Neidherr, M.Rosenbusch, R.Savreux, S.Schwarz, L.Schweikhard, C.Yazidjian

Approaching the N=82 shell closure with mass measurements of Ag and Cd isotopes

ATOMIC MASSES ^{112,114,115,116,117,118,119,120,121,122,123,124}Ag, ^{114,120,122,123,124,126,128}Cd; measured cyclotron frequencies relative to ¹³³Cs, and mass excesses using ISOLTRAP Penning trap spectrometer; deduced excitation energies of the isomers; evaluated mass excesses; two-neutron separate energies, and proton-neutron interaction strength δV_pn. Comparison with previous data and AME-2003.

doi: 10.1103/PhysRevC.81.034313
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2010DE04      Phys.Rev. C 81, 024322 (2010)

A.Y.Deo, Zs.Podolyak, P.M.Walker, A.Algora, B.Rubio, J.Agramunt, L.M.Fraile, N.Al-Dahan, N.Alkhomashi, J.A.Briz, E.Estevez, G.Farrelly, W.Gelletly, A.Herlert, U.Koster, A.Maira, S.Singla

Structures of ²⁰¹Po and ²⁰⁵Rn from EC/β⁺-decay studies

RADIOACTIVITY ²⁰¹At, ²⁰⁵Fr(EC), (β⁺)[from U(p, X), E=1.4 GeV]; measured Eγ, Iγ, ce, γγ-, γ(ce)-coin, half-lives, K-conversion coefficients, and EC/β⁺ branching ratios. ²⁰¹Po, ²⁰⁵Rn; deduced levels, J, π, multipolarity, and logft. Systematics of 3/2- and 13/2+ states in Pb, Po, and Rn nuclei with N=117, 119, 121 and 123.

doi: 10.1103/PhysRevC.81.024322
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2010EL11      Phys.Lett. B 693, 426 (2010)

S.Eliseev, Ch.Bohm, D.Beck, K.Blaum, M.Breitenfeldt, V.N.Fedosseev, S.George, F.Herfurth, A.Herlert, H.-J.Kluge, M.Kowalska, D.Lunney, S.Naimi, D.Neidherr, Yu.N.Novikov, M.Rosenbusch, L.Schweikhard, S.Schwarz, M.Seliverstov, K.Zuber

Direct mass measurements of ¹⁹⁴Hg and ¹⁹⁴Au: A new route to the neutrino mass determination?

ATOMIC MASSES ¹⁹⁴Au, ¹⁹⁴Hg; measured cyclotron frequency ratio; deduced mass excesses, Q-value of the orbital electron capture. Implications for β-decay anti-neutrino mass measurements.

doi: 10.1016/j.physletb.2010.08.071
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2010NA13      Phys.Rev.Lett. 105, 032502 (2010)

S.Naimi, G.Audi, D.Beck, K.Blaum, Ch.Bohm, Ch.Borgmann, M.Breitenfeldt, S.George, F.Herfurth, A.Herlert, M.Kowalska, S.Kreim, D.Lunney, D.Neidherr, M.Rosenbusch, S.Schwarz, L.Schweikhard, K.Zuber

Critical-Point Boundary for the Nuclear Quantum Phase Transition Near A=100 from Mass Measurements of ^{96, 97}Kr

ATOMIC MASSES ^{80,86,87,94,96,97}Kr; measured cyclotron frequencies and ratios; deduced mass excess, deformation. Penning-trap mass spectrometer at ISOLDE, CERN.

doi: 10.1103/PhysRevLett.105.032502
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2009BR09      Phys.Rev. C 80, 035805 (2009)

M.Breitenfeldt, G.Audi, D.Beck, K.Blaum, S.George, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, M.Kowalska, D.Lunney, S.Naimi, D.Neidherr, H.Schatz, S.Schwarz, L.Schweikhard

Penning trap mass measurements of ^99-109Cd with the ISOLTRAP mass spectrometer, and implications for the rp process

ATOMIC MASSES ^{99,100,101,102,103,104,105,106,107,108,109}Cd; measured and evaluated masses using ISOLTRAP penning-trap spectrometer. Comparisons with other measurements and AME-2003 evaluation.

doi: 10.1103/PhysRevC.80.035805
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2009KO35      Eur.Phys.J. A 42, 351 (2009)

M.Kowalska, S.Naimi, J.Agramunt, A.Algora, G.Audi, D.Beck, B.Blank, K.Blaum, Ch.Bohm, M.Breitenfeldt, E.Estevez, L.M.Fraile, S.George, F.Herfurth, A.Herlert, A.Kellerbauer, D.Lunney, E.Minaya-Ramirez, D.Neidherr, B.Olaizola, K.Riisager, M.Rosenbusch, B.Rubio, S.Schwarz, L.Schweikhard, U.Warring

Preparing a journey to the east of ²⁰⁸Pb with ISOLTRAP: Isobaric purification at A = 209 and new masses for ^211-213Fr and ²¹¹Ra

ATOMIC MASSES ^211,212,213Fr, ²¹¹Ra; measured masses using Penning trap at ISOLDE.

doi: 10.1140/epja/i2009-10835-1
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2009NE03      Phys.Rev.Lett. 102, 112501 (2009)

D.Neidherr, G.Audi, D.Beck, K.Blaum, Ch.Bohm, M.Breitenfeldt, R.B.Cakirli, R.F.Casten, S.George, F.Herfurth, A.Herlert, A.Kellerbauer, M.Kowalska, D.Lunney, E.Minaya-Ramirez, S.Naimi, E.Noah, L.Penescu, M.Rosenbusch, S.Schwarz, L.Schweikhard, T.Stora

Discovery of ²²⁹Rn and the Structure of the Heaviest Rn and Ra Isotopes from Penning-Trap Mass Measurements

ATOMIC MASSES ^{220,223,224,225,226,227,228,229}Rn; measured masses using ISOLTRAP mass spectrometer.

doi: 10.1103/PhysRevLett.102.112501
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2009NE11      Phys.Rev. C 80, 044323 (2009)

D.Neidherr, R.B.Cakirli, G.Audi, D.Beck, K.Blaum, Ch.Bohm, M.Breitenfeldt, R.F.Casten, S.George, F.Herfurth, A.Herlert, A.Kellerbauer, M.Kowalska, D.Lunney, E.Minaya-Ramirez, S.Naimi, M.Rosenbusch, S.Schwarz, L.Schweikhard

High-precision Penning-trap mass measurements of heavy xenon isotopes for nuclear structure studies

ATOMIC MASSES ^{136,137,138,139,140,141,142,143,144,145,146}Xe; measured masses using the ISOLTRAP double Penning-trap mass spectrometer at ISOLDE-CERN facility. Comparison with earlier measurements and AME-2003 evaluation. Z=50-78, N=78-112; systematics of S(2n) values. N=74-92, Z=52-58, even Z; N=119-141, odd N, Z=84-90, odd Z; Z=50-82, N=82-126; systematics of proton-neutron interaction strengths.

doi: 10.1103/PhysRevC.80.044323
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2009VA16      Eur.Phys.J. A 42, 401 (2009)

J.Van de Walle, V.Bildstein, N.Bree, J.Cederkall, P.Delahaye, J.Diriken, A.Ekstrom, V.N.Fedosseev, R.Gernhauser, A.Gustafsson, A.Herlert, M.Huyse, O.Ivanov, T.Kroll, R.Krucken, B.Marsh, N.Partronis, P.Van Duppen, D.Voulot, N.Warr, F.Wenander, K.Wimmer, S.M.Lenzi

In-trap decay of ⁶¹Mn and Coulomb excitation of ⁶¹Mn/⁶¹Fe

NUCLEAR REACTIONS ¹⁰⁹Ag(⁶¹Mn, ⁶¹Mn'), (⁶¹Fe, ⁶¹Fe'), E=2.87 MeV/nucleon; measured Eγ, Iγ following Coulomb excitation at the REX-ISOLDE facility and in-trap decay. ⁶¹Mn, ⁶¹Fe; deduced levels T_1/2, B(E2), B(M1). Comparison with large-scale shell model calculations.

doi: 10.1140/epja/i2009-10814-6
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2008BA54      Phys.Rev.Lett. 101, 262501 (2008)

S.Baruah, G.Audi, K.Blaum, M.Dworschak, S.George, C.Guenaut, U.Hager, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, D.Lunney, H.Schatz, L.Schweikhard, C.Yazidjian

Mass Measurements beyond the Major r-Process Waiting Point ⁸⁰Zn

ATOMIC MASSES ^{71,72,73,74,75,76,77,78,79,80,81}Zn; measured masses using the ISOLTRAP mass spectrometer.

doi: 10.1103/PhysRevLett.101.262501
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2008DW01      Phys.Rev.Lett. 100, 072501 (2008)

M.Dworschak, G.Audi, K.Blaum, P.Delahaye, S.George, U.Hager, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, D.Lunney, L.Schweikhard, C.Yazidjian

Restoration of the N = 82 Shell Gap from Direct Mass Measurements of ^{132, 134}Sn

ATOMIC MASSES ^{127,131,132,133,134}Sn; measured masses using the ISOLTRAP mass spectrometer. Discussed implications on the N=82 neutron-shell gap.

doi: 10.1103/PhysRevLett.100.072501
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2008GE07      Phys.Rev.Lett. 101, 252502 (2008)

W.Geithner, T.Neff, G.Audi, K.Blaum, P.Delahaye, H.Feldmeier, S.George, C.Guenaut, F.Herfurth, A.Herlert, S.Kappertz, M.Keim, A.Kellerbauer, H.-J.Kluge, M.Kowalska, P.Lievens, D.Lunney, K.Marinova, R.Neugart, L.Schweikhard, S.Wilbert, C.Yazidjian

Masses and Charge Radii of ^17-22Ne and the Two-Proton-Halo Candidate ¹⁷Ne

ATOMIC MASSES ^{17,18,19,20,21,22}Ne; measured masses and charge radii using penning trap mass spectrometry.

doi: 10.1103/PhysRevLett.101.252502
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2008GE08      Europhys.Lett. 82, 50005 (2008)

S.George, G.Audi, B.Blank, K.Blaum, M.Breitenfeldt, U.Hager, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, M.Kretzschmar, D.Lunney, R.Savreux, S.Schwarz, L.Schweikhard, C.Yazidjian

Time-separated oscillatory fields for high-precision mass measurements on short-lived Al and Ca nuclides

ATOMIC MASSES ^26,27Al, ^38,39Ca; measured cyclotron frequency ratios and their average values; deduced mass excesses and their uncertainties. Comparison with AME 2003 evaluation, available data.

doi: 10.1209/0295-5075/82/50005
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2008MU04      Eur.Phys.J. A 35, 1 (2008)

M.Mukherjee, D.Beck, K.Blaum, G.Bollen, J.Dilling, S.George, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, S.Schwarz, L.Schweikhard, C.Yazidjian

ISOLTRAP: An on-line Penning trap for mass spectrometry on short-lived nuclides

doi: 10.1140/epja/i2007-10528-9
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2008MU05      Eur.Phys.J. A 35, 31 (2008)

M.Mukherjee, D.Beck, K.Blaum, G.Bollen, P.Delahaye, J.Dilling, S.George, C.Guenaut, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, U.Koster, D.Lunney, S.Schwarz, L.Schweikhard, C.Yazidjian

Mass measurements and evaluation around A = 22

ATOMIC MASSES ^21,22,23Na, ^22,24Mg, ^37,39K; measured and evaluated masses using the ISOLTRAP Penning trap mass spectrometer.

doi: 10.1140/epja/i2007-10523-2
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2007GE07      Phys.Rev.Lett. 98, 162501 (2007)

S.George, S.Baruah, B.Blank, K.Blaum, M.Breitenfeldt, U.Hager, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, M.Kretzschmar, D.Lunney, R.Savreux, S.Schwarz, L.Schweikhard, C.Yazidjian

Ramsey Method of Separated Oscillatory Fields for High-Precision Penning Trap Mass Spectrometry

ATOMIC MASSES ³⁸Ca; measured mass. Penning trap, Ramsey method.

doi: 10.1103/PhysRevLett.98.162501
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2007KE09      Phys.Rev. C 76, 045504 (2007)

A.Kellerbauer, G.Audi, D.Beck, K.Blaum, G.Bollen, C.Guenaut, F.Herfurth, A.Herlert, H.-J.Kluge, D.Lunney, S.Schwarz, L.Schweikhard, C.Weber, C.Yazidjian

High-precision masses of neutron-deficient rubidium isotopes using a Penning trap mass spectrometer

ATOMIC MASSES ^{74,75,76,77,79,80,83,87}Rb; ⁶⁴Zn;^71,74Ga;^84,88Sr;¹³³Cs; measured atomic masses. ISOLTRAP Penning Trap.

doi: 10.1103/PhysRevC.76.045504
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2007YA08      Phys.Rev. C 76, 024308 (2007)

C.Yazidjian, G.Audi, D.Beck, K.Blaum, S.George, C.Guenaut, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, D.Lunney, L.Schweikhard

Evidence for a breakdown of the isobaric multiplet mass equation: A study of the A = 35, T = 3/2 isospin quartet

ATOMIC MASSES ^{35,36,37,38,43,44,45,46}K; measured masses using ISOLTRAP. Discussed implications on IMME.

doi: 10.1103/PhysRevC.76.024308
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2006BL17      Hyperfine Interactions 171, 83 (2006)

K.Blaum, D.Beck, M.Breitenfeldt, S.George, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, D.Lunney, R.Savreux, S.Schwarz, L.Schweikhard, C.Yazidjian

Penning trap mass spectrometry for nuclear structure studies

doi: 10.1007/s10751-006-9501-4
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2006DE36      Phys.Rev. C 74, 034331 (2006)

P.Delahaye, G.Audi, K.Blaum, F.Carrel, S.George, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, D.Lunney, L.Schweikhard, C.Yazidjian

High-accuracy mass measurements of neutron-rich Kr isotopes

ATOMIC MASSES ^{84,86,87,88,89,90,91,92,93,94,95}Kr; measured masses. Penning trap mass spectrometer.

doi: 10.1103/PhysRevC.74.034331
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2006HE29      Int.J. Mass Spectrom. 251, 131 (2006)

A.Herlert, S.Baruah, K.Blaum, P.Delahaye, M.Dworschak, S.George, C.Guenaut, U.Hager, F.Herfurth, A.Kellerbauer, M.Marie-Jeanne, S.Schwarz, L.Schweikhard, C.Yazidjian

Towards high-accuracy mass spectrometry of highly charged short-lived ions at ISOLTRAP

ATOMIC MASSES ^{126,129,130,131,136}Xe; measured mass excesses, and relative abundances of different charge states of ¹³¹Xe using the ISOLTRAP Penning trap method.

doi: 10.1016/j.ijms.2006.01.017
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2006ZA12      Hyperfine Interactions 171, 189 (2006)

M.Zakova, Ch.Geppert, A.Herlert, H.-J.Kluge, R.Sanchez, F.Schmidt-Kaler, D.Tiedemann, C.Zimmermann, W.Nortershauser

Towards a nuclear charge radius determination for beryllium isotopes

doi: 10.1007/s10751-006-9490-3
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2005BL10      Nucl.Phys. A752, 317c (2005)

K.Blaum, G.Audi, D.Beck, G.Bollen, P.Delahaye, S.George, C.Guenaut, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, D.Lunney, M.Mukherjee, S.Schwarz, L.Schweikhard, C.Yazidjian

ISOLTRAP mass measurements of exotic nuclides at δm/m=10^-8

doi: 10.1016/j.nuclphysa.2005.02.124
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2005BL27      J.Phys.(London) G31, S1775 (2005)

K.Blaum, G.Audi, D.Beck, G.Bollen, M.Brodeur, P.Delahaye, S.George, C.Guenaut, F.Herfurth, A.Herlert, A.Kellerbauer, H.-J.Kluge, D.Lunney, M.Mukherjee, D.Rodriguez, S.Schwarz, L.Schweikhard, C.Yazidjian

ISOLTRAP pins down masses of exotic nuclides

doi: 10.1088/0954-3899/31/10/071
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2005HE03      New Journal of Physics 7, 44 (2005)

A.Herlert, D.Beck, K.Blaum, F.Carrel, P.Delahaye, S.George, C.Guenaut, F.Herfurth, A.Kellerbauer, H.-J.Kluge, D.Lunney, M.Mukherjee, L.Schweikhard, C.Yazidjian

Mass spectrometry of atomic ions produced by in-trap decay of short-lived nuclides

RADIOACTIVITY ³⁷K(β⁺); ³⁷Ar(EC); measured T_1/2.

ATOMIC MASSES ³⁷K, ³⁷Ar; measured masses. Penning trap spectrometer.

doi: 10.1088/1367-2630/7/1/044
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2005HE26      Eur.Phys.J. A 25, Supplement 1, 17 (2005)

F.Herfurth, G.Audi, D.Beck, K.Blaum, G.Bollen, P.Delahaye, S.George, C.Guenaut, A.Herlert, A.Kellerbauer, H.-J.Kluge, D.Lunney, M.Mukherjee, S.Rahaman, S.Schwarz, L.Schweikhard, C.Weber, C.Yazidjian

Recent high-precision mass measurements with the Penning trap spectrometer ISOLTRAP

ATOMIC MASSES ^{229,230,231,232}Ra, ²³⁰Fr; measured masses. Penning trap mass spectrometer.

NUCLEAR STRUCTURE Z=81-102; analyzed two-neutron separation energies.

doi: 10.1140/epjad/i2005-06-031-3
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2004MU26      Phys.Rev.Lett. 93, 150801 (2004)

M.Mukherjee, A.Kellerbauer, D.Beck, K.Blaum, G.Bollen, F.Carrel, P.Delahaye, J.Dilling, S.George, C.Guenaut, F.Herfurth, A.Herlert, H.-J.Kluge, U.Koster, D.Lunney, S.Schwarz, L.Schweikhard, C.Yazidjian

The Mass of ²²Mg

ATOMIC MASSES ²²Mg, ^21,22Na; measured masses. ²²Mg deduced Qβ. Penning trap spectrometer, astrophysical implications discussed.

doi: 10.1103/PhysRevLett.93.150801
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