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NSR database version of May 30, 2024.

Search: Author = M.Kowalska

Found 91 matches.

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2024CH10      Appl.Radiat.Isot. 205, 111174 (2024)

M.Chojnacki, K.Kulesz, I.Michelon, N.Azaryan, E.Barbero, B.Crepieux, R.Lica, L.Murawski, M.Ziemba, M.Piersa-Silkowska, K.Vitulova, A.Korgul, R.B.Jolivet, R.Prokopowicz, U.Koster, M.Kowalska

Production of 129mXe and 131mXe via neutron activation of 128Xe and 130Xe at ILL-RHF and NCBJ-MARIA high-flux reactors

NUCLEAR REACTIONS 128,130Xe(n, γ), E thermal; measured reaction products, Eγ, Iγ; deduced yields, σ. Comparison with available data. The high-flux reactor MARIA located at the National Centre for Nuclear Research (NCBJ) in Swierk, Poland.

doi: 10.1016/j.apradiso.2024.111174
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2023DA19      Phys.Rev. C 108, 064304 (2023)

P.Das, U.Datta, S.Chakraborty, A.Rahaman, O.Tengblad, B.K.Agrawal, A.Becerril, J.Cederkall, J.Dey, A.Gottberg, S.M.Adil Imam, M.Kowalska, J.Kurcewicz, M.Lund, S.Mandal, M.Madurga, N.Marginean, R.Marginean, C.Mihai, I.Marroquin, E.Nacher, A.Negret, S.Pascu, A.Perea, E.Rapisarda, F.Rotaru, J.Ray, P.Sharma, T.Stora, C.Sotty, V.Vedia, N.Warr, R.Wadsworth

Exotic decay of 115Cs

doi: 10.1103/PhysRevC.108.064304
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2020BE10      Phys.Rev. C 101, 054311 (2020)

T.A.Berry, Zs.Podolyak, R.J.Carroll, R.Lica, B.A.Brown, H.Grawe, Ch.Sotty, N.K.Timofeyuk, T.Alexander, A.N.Andreyev, S.Ansari, M.J.G.Borge, M.Brunet, J.R.Cresswell, C.Fahlander, L.M.Fraile, H.O.U.Fynbo, E.Gambna, W.Gelletly, R.-B.Gerst, M.Gorska, A.Gredley, P.Greenlees, L.J.Harkness-Brennan, M.Huyse, S.M.Judge, D.S.Judson, J.Konki, M.Kowalska, J.Kurcewicz, I.Kuti, S.Lalkovski, I.Lazarus, M.Lund, M.Madurga, N.Marginean, R.Marginean, I.Marroquin, C.Mihai, R.E.Mihai, E.Nacher, A.Negret, S.Nae, C.Nita, S.Pascu, R.D.Page, Z.Patel, A.Perea, J.Phrompao, M.Piersa, V.Pucknell, P.Rahkila, E.Rapisarda, P.H.Regan, F.Rotaru, M.Rudigier, C.M.Shand, R.Shearman, E.C.Simpson, S.Stegemann, T.Stora, O.Tengblad, A.Turturica, P.Van Duppen, V.Vedia, P.M.Walker, N.Warr, F.P.Wearing, H.De Witte

Octupole states in 207Tl studied through β decay

RADIOACTIVITY 207Hg(β-)[from 208Pb(p, X)207Hg, E=1.4 GeV]; measured Eγ, Iγ, βγ- and βγγ-coin, γγ(θ) using plastic scintillators for β-detection and four HPGe detectors for γ-detection at CERN-ISOLDE. 207Tl; deduced levels J, π, β feedings, multipolarities, logft, B(M1), B(E1), B(E2), B(M2), B(E3), configurations. Discussion of octupole phonon states. Comparison with state-of-the-art large-scale shell-model calculations, and with previous experimental results.

doi: 10.1103/PhysRevC.101.054311
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2020HA38      Phys.Rev.X 10, 041061 (2020)

R.D.Harding, S.Pallada, J.Croese, A.Antusek, M.Baranowski, M.L.Bissell, L.Cerato, K.M.Dziubinska-Kuhn, W.Gins, F.P.Gustafsson, A.Javaji, R.B.Jolivet, A.Kanellakopoulos, B.Karg, M.Kempka, V.Kocman, M.Kozak, K.Kulesz, M.Madurga Flores, G.Neyens, R.Pietrzyk, J.Plavec, M.Pomorski, A.Skrzypczak, P.Wagenknecht, F.Wienholtz, J.Wolak, Z.Xu, D.Zakoucky, M.Kowalska

Magnetic Moments of Short-Lived Nuclei with Part-per-Million Accuracy: Toward Novel Applications of β-Detected NMR in Physics, Chemistry, and Biology

NUCLEAR MOMENTS 23,26Na; measured Larmor frequencies; deduced nuclear magnetic dipole moments with part-per-million (ppm) accuracy. Comparison with available data.

doi: 10.1103/PhysRevX.10.041061
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2019BA22      Phys.Rev. C 99, 054317 (2019)

A.E.Barzakh, J.G.Cubiss, A.N.Andreyev, M.D.Seliverstov, B.Andel, S.Antalic, P.Ascher, D.Atanasov, D.Beck, J.Bieron, K.Blaum, Ch.Borgmann, M.Breitenfeldt, L.Capponi, T.E.Cocolios, T.Day Goodacre, X.Derkx, H.De Witte, J.Elseviers, D.V.Fedorov, V.N.Fedosseev, S.Fritzsche, L.P.Gaffney, S.George, L.Ghys, F.P.Hessberger, M.Huyse, N.Imai, Z.Kalaninova, D.Kisler, U.Koster, M.Kowalska, S.Kreim, J.F.W.Lane, V.Liberati, D.Lunney, K.M.Lynch, V.Manea, B.A.Marsh, S.Mitsuoka, P.L.Molkanov, Y.Nagame, D.Neidherr, K.Nishio, S.Ota, D.Pauwels, L.Popescu, D.Radulov, E.Rapisarda, J.P.Revill, M.Rosenbusch, R.E.Rossel, S.Rothe, K.Sandhu, L.Schweikhard, S.Sels, V.L.Truesdale, C.Van Beveren, P.Van den Bergh, P.Van Duppen, Y.Wakabayashi, K.D.A.Wendt, F.Wienholtz, B.W.Whitmore, G.L.Wilson, R.N.Wolf, K.Zuber

Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in 217, 218, 219At revealed by in-source laser spectroscopy

NUCLEAR MOMENTS 217,218,219At; measured hyperfine structure spectra, isotopic shifts, and hyperfine splitting constants using in-source resonance-ionization technique at CERN-ISOLDE; deduced magnetic dipole and electric quadrupole moments, changes in nuclear mean-square charge radii, octupole collectivity. 217,218,219At isotopes produced in U(p, X), E=1.4 GeV reaction. Systematics of g factors in 209,211,213Bi, 211,217,219At, 213,219,221,223,225Fr, 215,217,227Ac, changes in rms charge radii for 207,208,209,210,211,217,218,219At, shell-effect parameters in Pb, Bi, Po, At, Rn, Fr, Ra, Ac isotopes, and odd-even staggering in 205,207,209,211Pb, 207,209,217Po, 208,210,218At, 210,212,220,222,224,226Fr, 219,221Rn, 221,223,225,227Ra.

doi: 10.1103/PhysRevC.99.054317
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2019FR08      Hyperfine Interactions 240, 66 (2019)

N.Frommgen, W.Nortershauser, M.L.Bissell, K.Blaum, C.Geppert, M.Hammen, M.Kowalska, J.Kramer, K.Kreim, A.Krieger, Y.A.Litvinov, R.Neugart, G.Neyens, J.Papuga, R.Sanchez, D.T.Yordanov

Hyperfine structure and nuclear magnetic moments of the praseodymium isotopes 135, 136, 137Pr

NUCLEAR MOMENTS 135,136,137Pr; measured frequencies; deduced hyperfine parameters and magnetic moments. Comparison with available data.

doi: 10.1007/s10751-019-1608-5
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2019GO12      Phys.Rev.Lett. 122, 192502 (2019)

C.Gorges, L.V.Rodriguez, D.L.Balabanski, M.L.Bissell, K.Blaum, B.Cheal, R.F.Garcia Ruiz, G.Georgiev, W.Gins, H.Heylen, A.Kanellakopoulos, S.Kaufmann, M.Kowalska, V.Lagaki, S.Lechner, B.Maass, S.Malbrunot-Ettenauer, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, P.-G.Reinhard, S.Sailer, R.Sanchez, S.Schmidt, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Laser Spectroscopy of Neutron-Rich Tin Isotopes: A Discontinuity in Charge Radii across the N=82 Shell Closure

NUCLEAR MOMENTS 108,110,112,114,116,118,120,122,124,126,128,130,132,134Sn; measured frequencies; deduced isotope shifts, mean-square nuclear charge radii.

doi: 10.1103/PhysRevLett.122.192502
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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. 52,53,54,55,56,57Cr, 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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2019XI07      Phys.Lett. B 797, 134805 (2019)

L.Xie, X.F.Yang, C.Wraith, C.Babcock, J.Bieron, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, L.Filippin, K.T.Flanagan, R.F.Garcia Ruiz, W.Gins, G.Gaigalas, M.Godefroid, C.Gorges, L.K.Grob, H.Heylen, P.Jonsson, S.Kaufmann, M.Kowalska, J.Kramer, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, T.Otsuka, J.Papuga, R.Sanchez, Y.Tsunoda, D.T.Yordanov

Nuclear charge radii of 62-80Zn and their dependence on cross-shell proton excitations

NUCLEAR MOMENTS 62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80Zn; measured frequencies; deduced isotope shifts, mean square charge radii.

doi: 10.1016/j.physletb.2019.134805
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2019YO06      Hyperfine Interactions 240, 67 (2019)

D.T.Yordanov, M.Kowalska, K.Blaum, M.De Rydt, K.T.Flanagan, P.Himpe, P.Lievens, S.Mallion, R.Neugart, G.Neyens, N.Vermeulen, H.Stroke

Quadrupole moments of 29Mg and 33Mg

NUCLEAR MOMENTS 29,33Mg; measured frequencies; deduced hyperfine parameters and quadrupole moments. Comparison with shell-model predictions.

doi: 10.1007/s10751-019-1609-4
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2018CU02      Phys.Rev. C 97, 054327 (2018)

J.G.Cubiss, A.E.Barzakh, M.D.Seliverstov, A.N.Andreyev, B.Andel, S.Antalic, P.Ascher, D.Atanasov, D.Beck, J.Bieron, K.Blaum, Ch.Borgmann, M.Breitenfeldt, L.Capponi, T.E.Cocolios, T.Day Goodacre, X.Derkx, H.De Witte, J.Elseviers, D.V.Fedorov, V.N.Fedosseev, S.Fritzsche, L.P.Gaffney, S.George, L.Ghys, F.P.Hessberger, M.Huyse, N.Imai, Z.Kalaninova, D.Kisler, U.Koster, M.Kowalska, S.Kreim, J.F.W.Lane, V.Liberati, D.Lunney, K.M.Lynch, V.Manea, B.A.Marsh, S.Mitsuoka, P.L.Molkanov, Y.Nagame, D.Neidherr, K.Nishio, S.Ota, D.Pauwels, L.Popescu, D.Radulov, E.Rapisarda, J.P.Revill, M.Rosenbusch, R.E.Rossel, S.Rothe, K.Sandhu, L.Schweikhard, S.Sels, V.L.Truesdale, C.Van Beveren, P.Van den Bergh, Y.Wakabayashi, P.Van Duppen, K.D.A.Wendt, F.Wienholtz, B.W.Whitmore, G.L.Wilson, R.N.Wolf, K.Zuber

Charge radii and electromagnetic moments of 195-211At

NUCLEAR MOMENTS 195,195m,196,197,197m,198,198m,199,199m,200,200m,201,202,202m,203,204,205,206,207,208,209,210,211At; measured hfs spectra, hyperfine coupling constants, isotope shifts, and rms charge radii using the in-source resonance-ionization spectroscopy method, and Multi-Reflection Time-of-Flight Mass Spectrometer (MR-TOF MS) at CERN-ISOLDE; deduced magnetic dipole moments and spectroscopic quadrupole moments, configurations, and quadrupole deformation parameters. 206At; deduced J. Detailed systematics of magnetic dipole moments, spectroscopic quadrupole moments, deformations, and rms charge radii in Hg, Tl, Pb, Bi, Po, At, Fr, Ra and Ac nuclei. Comparison with theoretical calculations using multiconfiguration Dirac-Hartree-Fock (MCDHF) method.

NUCLEAR REACTIONS U(p, X)195At/195mAt/196At/197At/197mAt/198At/198mAt/199At/199mAt/200At/200m1At/200m2At/201At/202At/202mAt/203At/204At/205At/206At/207At/208At/209At/210At/211At, E=1.4 GeV; produced radioactive astatine isotopes by spallation reaction with beam from CERN PS Booster impinging on a thick UCx target, followed by injection into a hot cavity of the Resonance Ionization Laser Ion Source (RILIS), and ionization by a three-step photoionization scheme.

doi: 10.1103/PhysRevC.97.054327
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2018HA30      Phys.Rev.Lett. 121, 102501 (2018)

M.Hammen, W.Nortershauser, D.L.Balabanski, M.L.Bissell, K.Blaum, I.Budincevic, B.Cheal, K.T.Flanagan, N.Frommgen, G.Georgiev, Ch.Geppert, M.Kowalska, K.Kreim, A.Krieger, W.Nazarewicz, R.Neugart, G.Neyens, J.Papuga, P.-G.Reinhard, M.M.Rajabali, S.Schmidt, D.T.Yordanov

From Calcium to Cadmium: Testing the Pairing Functional through Charge Radii Measurements of 100-130Cd

NUCLEAR MOMENTS 100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130Cd; measured frequencies; deduced differences in mean-square nuclear charge radii, isotope shifts. Comparison with density functional theory predictions.

doi: 10.1103/PhysRevLett.121.102501
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2018YA11      Phys.Rev. C 97, 044324 (2018)

X.F.Yang, Y.Tsunoda, C.Babcock, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, K.T.Flanagan, R.F.Garcia Ruiz, W.Gins, C.Gorges, L.K.Grob, H.Heylen, S.Kaufmann, M.Kowalska, J.Kramer, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, T.Otsuka, J.Papuga, R.Sanchez, C.Wraith, L.Xie, D.T.Yordanov

Investigating the large deformation of the 5/2+ isomeric state in 73Zn: An indicator for triaxiality

NUCLEAR MOMENTS 73,73mZn; measured hyperfine structure spectra using collinear laser spectroscopy (COLLAPS) at CERN-ISOLDE; deduced spins of ground state and isomer, estimated half-life of the isomer, and found no evidence for a previously proposed 5.6-s isomer. 73,73mZn produced by impinging UCx target by 1.4 GeV protons, and ionized by the resonant ionization laser-ion source (RILIS). 69m,71m,73m,75,77,79Zn; calculated quadrupole moments of ground states and isomers using shell model with JUN45 and A3DA-m interactions, and compared with experimental results from experiments at ISOLDE-CERN. Discussed collectivity in 73Zn.

NUCLEAR STRUCTURE 71,72,73,74,75Zn; calculated potential energy surfaces (PES) of high-spin states in 71,73,75Zn, and 0+, 2+, and 4+ states in 72,74Zn in (Q2, Q4) plane using Monte Carlo shell model (MCSM). 73Zn; calculated levels, J, π, T plots of levels in 73Zn, and compared with experimental data.

doi: 10.1103/PhysRevC.97.044324
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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 123,146,147,148Cs [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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2017DE18      Phys.Rev. C 96, 014310 (2017);Erratum Phys.Rev. C 97, 059902 (2018)

A.de Roubin, D.Atanasov, K.Blaum, S.George, F.Herfurth, D.Kisler, M.Kowalska, S.Kreim, D.Lunney, V.Manea, E.Minaya Ramirez, M.Mougeot, D.Neidherr, M.Rosenbusch, L.Schweikhard, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber

Nuclear deformation in the A ≈ 100 region: Comparison between new masses and mean-field predictions

ATOMIC MASSES 100,101,102Sr, 100,101,102Rb; measured frequency ratios and mass excesses by the time-of-flight ion cyclotron resonance (ToF-ICR) method using the multireflection time-of-flight mass spectrometer (MR-ToF MS), precision Penning traps, and ISOLTRAP at ISOLDE/CERN. The Sr and Rb isotopes produced as fission fragments in U(p, F), E=1.4 GeV using uranium carbide target, and ISOLDE high-resolution separator (HRS). Comparison with previous measurements, AME-2012 evaluation, and different self-consistent mean-field calculations with different Skyrme and Gogny effective interactions. Systematics of experimental and theoretical S(2n), root mean square charge radii, and odd-even staggering for N=56-66 Rb, Sr and Kr nuclei. Discussed competition of nuclear shapes in the A=100 mass region.

doi: 10.1103/PhysRevC.96.014310
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2017GA02      J.Phys.(London) G44, 044003 (2017)

R.F.Garcia Ruiz, C.Gorges, M.Bissell, K.Blaum, W.Gins, H.Heylen, K.Koenig, S.Kaufmann, M.Kowalska, J.Kramer, P.Lievens, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, D.T.Yordanov, X.F.Yang

Development of a sensitive setup for laser spectroscopy studies of very exotic calcium isotopes

NUCLEAR MOMENTS 48,51,52Ca; measured fluorescence photons; deduced nuclear charge radii, hyperfine parameter values, nuclear magnetic and quadrupole moments. Comparison with available data.

doi: 10.1088/1361-6471/aa5a24
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2017JA07      J.Phys.(London) G44, 064003 (2017)

A.Jancso, J.G.Correia, A.Gottberg, J.Schell, M.Stachura, D.Szunyogh, S.Pallada, D.C.Lupascu, M.Kowalska, L.Hemmingsen

TDPAC and β-NMR applications in chemistry and biochemistry

NUCLEAR MOMENTS 29,31Mg, 58,74,75Cu; measured Eβ, Iβ; deduced hyperfine structure, β-NMR resonances.

doi: 10.1088/1361-6471/aa666b
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2017KO26      J.Phys.(London) G44, 084005 (2017)

M.Kowalska, P.Aschenbrenner, M.Baranowski, M.L.Bissell, W.Gins, R.D.Harding, H.Heylen, G.Neyens, S.Pallada, N.Severijns, Ph.Velten, M.Walczak, F.Wienholtz, Z.Y.Xu, X.F.Yang, D.Zakoucky

New laser polarization line at the ISOLDE facility

NUCLEAR MOMENTS 26,28Na; measured longitudinal transitional field; deduced hyperfine structures of the D2 line, ratio of the nuclear spin polarization. Comparison with available data.

doi: 10.1088/1361-6471/aa77d7
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2017MA29      Phys.Rev. C 95, 054322 (2017)

V.Manea, P.Ascher, D.Atanasov, A.E.Barzakh, D.Beck, K.Blaum, Ch.Borgmann, M.Breitenfeldt, R.B.Cakirli, T.E.Cocolios, T.Day Goodacre, D.V.Fedorov, V.N.Fedosseev, S.George, F.Herfurth, M.Kowalska, S.Kreim, Yu.A.Litvinov, D.Lunney, B.Marsh, D.Neidherr, M.Rosenbusch, R.E.Rossel, S.Rothe, L.Schweikhard, F.Wienholtz, R.N.Wolf, K.Zuber

Penning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead region

ATOMIC MASSES 180,185,188,190Au, 197,197m,219At; measured cyclotron frequency ratios with respect to 133Cs+ by the time-of-flight ion-cyclotron-resonance (ToF-ICR) technique using ISOLTRAP at ISOLDE-CERN; deduced mass excesses, and compared to values from AME-2012. Isotopes prepared by 1.4-GeV protons incident on UCx target at CERN's proton synchrotron booster (PSB), followed by selective ionization by resonance-ionization laser ion source (RILIS), and mass separation using magnetic separators at ISOLDE. 197At; deduced ground state and the energy of the isomer. Systematics of S(2n) and rms charge radii for N=100-114, Au and Hg isotopes.

doi: 10.1103/PhysRevC.95.054322
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2017WR01      Phys.Lett. B 771, 385 (2017)

C.Wraith, X.F.Yang, L.Xie, C.Babcock, J.Bieron, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, L.Filippin, R.F.Garcia Ruiz, W.Gins, L.K.Grob, G.Gaigalas, M.Godefroid, C.Gorges, H.Heylen, M.Honma, P.Jonsson, S.Kaufmann, M.Kowalska, J.Kramer, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, F.Nowacki, T.Otsuka, J.Papuga, R.Sanchez, Y.Tsunoda, D.T.Yordanov

Evolution of nuclear structure in neutron-rich odd-Zn isotopes and isomers

NUCLEAR MOMENTS 63,65,67,69,71,73,75,77,79Zn; measured optical spectra; deduced hyperfine spectra (hfs) including isomeric structures, J of ground and isomeric states, hfs constants, nuclear magnetic dipole and quadrupole moments, g-factors and wave functions. Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2017.05.085
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2017YO05      J.Phys.(London) G44, 075104 (2017)

D.T.Yordanov, M.L.Bissell, K.Blaum, M.De Rydt, C.Geppert, J.Kramer, K.Kreim, M.Kowalska, A.Krieger, P.Lievens, R.Neugart, G.Neyens, W.Nortershauser, L.V.Rodriguez, R.Sanchez, P.Vingerhoets

Spin and magnetic moment of 23Mg

NUCLEAR MOMENTS 23,24,25Mg; measured fluorescence spectra; deduced magnetic moments. Collinear laser spectroscopy at CERN-ISOLDE.

doi: 10.1088/1361-6471/aa718b
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2016BA44      Phys.Lett. B 760, 387 (2016)

C.Babcock, H.Heylen, M.L.Bissell, K.Blaum, P.Campbell, B.Cheal, D.Fedorov, R.F.Garcia Ruiz, W.Geithner, W.Gins, T.Day Goodacre, L.K.Grob, M.Kowalska, S.M.Lenzi, B.Maass, S.Malbrunot-Ettenauer, B.Marsh, R.Neugart, G.Neyens, W.Nortershauser, T.Otsuka, R.Rossel, S.Rothe, R.Sanchez, Y.Tsunoda, C.Wraith, L.Xie, X.F.Yang

Quadrupole moments of odd-A 53-63Mn: Onset of collectivity towards N = 40

NUCLEAR MOMENTS 53,55,57,59,61,63Mn; measured hyperfine spectra; deduced spectroscopic quadrupole moments. Comparison with large-scale shell model predictions using three effective interactions, GXPF1A, LNPS, modified A3DA.

doi: 10.1016/j.physletb.2016.07.016
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2016BI08      Phys.Rev. C 93, 064318 (2016)

M.L.Bissell, T.Carette, K.T.Flanagan, P.Vingerhoets, J.Billowes, K.Blaum, B.Cheal, S.Fritzsche, M.Godefroid, M.Kowalska, J.Kramer, R.Neugart, G.Neyens, W.Nortershauser, D.T.Yordanov

Cu charge radii reveal a weak sub-shell effect at N=40

ATOMIC PHYSICS 58,59,60,61,62,63,64,65,66,67,68,68m,69,70,70m,71,72,73,74,75Cu; measured isotope shifts, and mean-square charge radii using collinear laser spectroscopy at the CERN-ISOLDE radioactive ion beam facility. The Cu isotopes were produced in Zr(p, X), E=1.4 GeV reaction using RILIS laser ion source and linear Paul trap ISCOOL for separation. Comparison with muonic atomic data, and state-of-the-art atomic physics calculations using multiconfiguration Dirac-Hartree-Fock (MCDHF) method.

doi: 10.1103/PhysRevC.93.064318
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2016GA34      Nat.Phys. 12, 594 (2016)

R.F.Garcia Ruiz, M.L.Bissell, K.Blaum, A.Ekstrom, N.Frommgen, G.Hagen, M.Hammen, K.Hebeler, J.D.Holt, G.R.Jansen, M.Kowalska, K.Kreim, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, T.Papenbrock, J.Papuga, A.Schwenk, J.Simonis, K.A.Wendt, D.T.Yordanov

Unexpectedly large charge radii of neutron-rich calcium isotopes

NUCLEAR REACTIONS U(p, X)43Ca/44Ca/45Ca/46Ca/47Ca/48Ca/49Ca/50Ca/51Ca/52Ca, E=1.4GeV; measured hyperfine structure spectra; deduced charge radii. Comparison with available data.

doi: 10.1038/nphys3645
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2016HE14      Phys.Rev. C 94, 054321 (2016)

H.Heylen, C.Babcock, R.Beerwerth, J.Billowes, M.L.Bissell, K.Blaum, J.Bonnard, P.Campbell, B.Cheal, T.Day Goodacre, D.Fedorov, S.Fritzsche, R.F.Garcia Ruiz, W.Geithner, Ch.Geppert, W.Gins, L.K.Grob, M.Kowalska, K.Kreim, S.M.Lenzi, I.D.Moore, B.Maass, S.Malbrunot-Ettenauer, B.Marsh, R.Neugart, G.Neyens, W.Nortershauser, T.Otsuka, J.Papuga, R.Rossel, S.Rothe, R.Sanchez, Y.Tsunoda, C.Wraith, L.Xie, X.F.Yang, D.T.Yordanov

Changes in nuclear structure along the Mn isotopic chain studied via charge radii

ATOMIC PHYSICS 51,53,54,55,56,57,58,59,60,61,62,63,64Mn; measured hyperfine spectra using collinear laser spectroscopy at ISOLDE-CERN; deduced charge radii. Isotopes produced in bombardment of uranium carbide target with 1.4-GeV proton beam. Mass and field shift factors calculated in multiconfiguration Dirac-Fock framework and combined with King plot analysis. Comparison with Duflo-Zuker formula.

NUCLEAR STRUCTURE 53,55,57,59,61,63,65Mn; calculated potential energy surfaces using Monte Carlo shell-model. Systematics of S(2n) values for Z=20-28, N=24-46 nuclei.

doi: 10.1103/PhysRevC.94.054321
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2016KO41      Eur.Phys.J.Plus 131, 294 (2016)

M.Kowalska

Global properties of atomic nuclei- Masses, radii and modern methods to measure them

COMPILATION A=1-240; compiled, discussed mass and charge radii, binding energy, Q, isotopic shift, methods of their determination and similarities and differences with respect to atoms, intensity of scattered particles as a function of their energy, time-of-flight measurements, Penning trap and eigenmotions inside it, matter radii for short-lived isotopes and their influence on cross sections, changes of charge radii as a function of neutron number, advanced instrumental questions.

doi: 10.1140/epjp/i2016-16294-0
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2016YA02      Phys.Rev.Lett. 116, 182502 (2016)

X.F.Yang, C.Wraith, L.Xie, C.Babcock, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, K.T.Flanagan, R.F.Garcia Ruiz, W.Gins, C.Gorges, L.K.Grob, H.Heylen, S.Kaufmann, M.Kowalska, J.Kraemer, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, R.Sanchez, D.T.Yordanov

Isomer Shift and Magnetic Moment of the Long-Lived 1/2+ Isomer in 7930Zn49: Signature of Shape Coexistence near 78Ni

NUCLEAR MOMENTS 67,79Zn [from U(p, X), E=1.4 GeV]; measured hyperfine spectra of the ground and isomeric states; deduced nuclear moments, g factors, root-mean-square charge radii. Comparison with available data.

doi: 10.1103/PhysRevLett.116.182502
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2016YO01      Phys.Rev.Lett. 116, 032501 (2016)

D.T.Yordanov, D.L.Balabanski, M.L.Bissell, K.Blaum, I.Budincevic, B.Cheal, K.Flanagan, N.Frommgen, G.Georgiev, Ch.Geppert, M.Hammen, M.Kowalska, K.Kreim, A.Krieger, J.Meng, R.Neugart, G.Neyens, W.Nortershauser, M.M.Rajabali, J.Papuga, S.Schmidt, P.W.Zhao

Simple Nuclear Structure in 111-129Cd from Atomic Isomer Shifts

NUCLEAR MOMENTS 111,113,115,117,119,121,123,125,127,129Cd; measured spectral lines; deduced isomer shifts and differential mean square charge radii, quadrupole moments. Comparison with covariant density functional theory.

doi: 10.1103/PhysRevLett.116.032501
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2015AT03      Phys.Rev.Lett. 115, 232501 (2015)

D.Atanasov, P.Ascher, K.Blaum, R.B.Cakirli, T.E.Cocolios, S.George, S.Goriely, F.Herfurth, H.-T.Janka, O.Just, M.Kowalska, S.Kreim, D.Kisler, Y.A.Litvinov, D.Lunney, V.Manea, D.Neidherr, M.Rosenbusch, L.Schweikhard, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber

Precision Mass Measurements of 129-131Cd and Their Impact on Stellar Nucleosynthesis via the Rapid Neutron Capture Process

ATOMIC MASSES 129,130,131Cd; measured TOF-ICR resonance spectra; deduced masses, corrections to the existing values, neutron separation energies. Penning-trap spectrometer ISOLTRAP at ISOLDE/CERN.

doi: 10.1103/PhysRevLett.115.232501
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2015BA49      Phys.Lett. B 750, 176 (2015)

C.Babcock, H.Heylen, J.Billowes, M.L.Bissell, K.Blaum, P.Campbell, B.Cheal, R.F.Garcia Ruiz, C.Geppert, W.Gins, M.Kowalska, K.Kreim, S.M.Lenzi, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, D.T.Yordanov

Evidence for Increased neutron and proton excitations between 51-63Mn

NUCLEAR MOMENTS 51,52,53,54,55,56,57,58,59,60,61,62,63Mn; measured hyperfine structures; deduced J, magnetic dipole moments. Comparison with large-scale shell-model calculations using different model spaces and effective interactions.

doi: 10.1016/j.physletb.2015.09.012
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2015BO11      Phys.Rev. C 92, 024322 (2015)

S.Bottoni, S.Leoni, B.Fornal, R.Raabe, K.Rusek, G.Benzoni, A.Bracco, F.C.L.Crespi, A.I.Morales, P.Bednarczyk, N.Cieplicka-Orynczak, W.Krolas, A.Maj, B.Szpak, M.Callens, J.Bouma, J.Elseviers, H.De Witte, F.Flavigny, R.Orlandi, P.Reiter, M.Seidlitz, N.Warr, B.Siebeck, S.Hellgartner, D.Mucher, J.Pakarinen, M.Vermeulen, C.Bauer, G.Georgiev, R.V.F.Janssens, D.Balabanski, M.Sferrazza, M.Kowalska, E.Rapisarda, D.Voulot, M.Lozano Benito, F.Wenander

Cluster-transfer reactions with radioactive beams: A spectroscopic tool for neutron-rich nuclei

NUCLEAR REACTIONS 7Li(98Rb, xnα), (98Rb, xnt), E=279 MeV; measured Eγ, (7Li)γ-, αγ-, tγ-coin, differential σ(θ), absolute cross sections for triton and α transfers using MINIBALL Ge array and Si detector system T-REX at REX-ISOLDE-CERN facility. Cluster-transfer reactions. DWBA calculations using FRESCO code. 98Rb, 98,99Sr, 99,100Y, 100Zr; observed γ rays in particle-γ-coin spectra and γγ-coin spectra.

doi: 10.1103/PhysRevC.92.024322
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2015ES07      Phys.Rev. C 92, 044321 (2015)

M.E.Estevez Aguado, A.Algora, J.Agramunt, B.Rubio, J.L.Tain, D.Jordan, L.M.Fraile, W.Gelletly, A.Frank, M.Csatlos, L.Csige, Zs.Dombradi, A.Krasznahorkay, E.Nacher, P.Sarriguren, M.J.G.Borge, J.A.Briz, O.Tengblad, F.Molina, O.Moreno, M.Kowalska, V.N.Fedosseev, B.A.Marsh, D.V.Fedorov, P.L.Molkanov, A.N.Andreyev, M.D.Seliverstov, K.Burkard, W.Huller

Shapes of 192, 190Pb ground states from β-decay studies using the total-absorption technique

RADIOACTIVITY 190,192Pb(EC), (β+)[from U(p, X), E=1.4 GeV]; measured Eγ, Iγ, (x ray)γ-coin using total absorption spectrometer Lucrecia (TAS) at CERN-ISOLDE facility; deduced I(ϵ), I(ϵ+β+) feedings, BG(T) strength distributions, deformation for ground states. Comparison with QRPA calculations, and with previous experimental data.

doi: 10.1103/PhysRevC.92.044321
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2015FR08      Eur.Phys.J. D 69, 164 (2015)

N.Frommgen, D.L.Balabanski, M.L.Bissell, J.Bieron, K.Blaum, B.Cheal, K.Flanagan, S.Fritzsche, C.Geppert, M.Hammen, M.Kowalska, K.Kreim, A.Krieger, R.Neugart, G.Neyens, M.M.Rajabali, W.Nortershauser, J.Papuga, D.T.Yordanov

Collinear laser spectroscopy of atomic cadmium

NUCLEAR MOMENTS 107,109,111,113,115,117,119,121,123Cd; measured frequencies; deduced hyperfine structure factors, nuclear magnetic moments and electric quadrupole moments. Comparison with multi-configuration Dirac-Hartree-Fock calculations. Colinear laser spectroscopy at Isolde.

doi: 10.1140/epjd/e2015-60219-0
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2015HE28      Phys.Rev. C 92, 044311 (2015)

H.Heylen, C.Babcock, J.Billowes, M.L.Bissell, K.Blaum, P.Campbell, B.Cheal, R.F.Garcia Ruiz, Ch.Geppert, W.Gins, M.Kowalska, K.Kreim, S.M.Lenzi, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, D.T.Yordanov

Spins and magnetic moments of 58, 60, 62, 64Mn ground states and isomers

NUCLEAR MOMENTS 54,56,58,60,62,64Mn; measured hyperfine spectra using laser ion source (RILIS), high-resolution separator (HRS), cooler-buncher (ISCOOL), and collinear laser spectroscopy beam line (COLLAPS) at ISOLDE-CERN; deduced levels, J, hyperfine structure parameters, magnetic dipole, moments and electric quadrupole moments for ground states and isomers. Mn beams produced in U(p, X), E=1.4 GeV reaction. Comparison with large-scale shell-model calculations using GXPF1A and LNPS effective interactions.

doi: 10.1103/PhysRevC.92.044311
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2015PF01      Phys.Rev. C 92, 014316 (2015)

M.Pfutzner, W.Dominik, Z.Janas, C.Mazzocchi, M.Pomorski, A.A.Bezbakh, M.J.G.Borge, K.Chrapkiewicz, V.Chudoba, R.Frederickx, G.Kaminski, M.Kowalska, S.Krupko, M.Kuich, J.Kurcewicz, A.A.Lis, M.V.Lund, K.Miernik, J.Perkowski, R.Raabe, G.Randisi, K.Riisager, S.Sambi, O.Tengblad, F.Wenander

β decay of 6He into the α+d continuum

RADIOACTIVITY 6He(β-)[from U(p, X), E=1.4 GeV at CERN-ISOLDE]; measured Eβ, Eα, Ed, E(α+d) using gaseous optical time projection chamber (OTPC) at REX-ISOLDE facility; deduced position distribution of 6He decay events, α+d decay branching ratio, transition probability of α+d branch as a function of (α+d) energy and compared with theoretical three-body model.

doi: 10.1103/PhysRevC.92.014316
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2015RO10      Phys.Rev.Lett. 114, 202501 (2015)

M.Rosenbusch, P.Ascher, D.Atanasov, C.Barbieri, D.Beck, K.Blaum, Ch.Borgmann, M.Breitenfeldt, R.B.Cakirli, A.Cipollone, S.George, F.Herfurth, M.Kowalska, S.Kreim, D.Lunney, V.Manea, P.Navratil, D.Neidherr, L.Schweikhard, V.Soma, J.Stanja, F.Wienholtz, R.N.Wolf, K.Zuber

Probing the N=32 Shell Closure below the Magic Proton Number Z=20: Mass Measurements of the Exotic Isotopes 52, 53K

ATOMIC MASSES 52,53K; measured time-of-flight spectra for nuclides; deduced masses. Comparison with Skyrme-Hartree-Fock-Bogoliubov and ab initio Gorkov-Green function calculations.

doi: 10.1103/PhysRevLett.114.202501
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2015RU02      Phys.Rev. C 91, 041304 (2015)

R.F.Garcia Ruiz, M.L.Bissell, K.Blaum, N.Frommgen, M.Hammen, J.D.Holt, M.Kowalska, K.Kreim, J.Menendez, R.Neugart, G.Neyens, W.Nortershauser, F.Nowacki, J.Papuga, A.Poves, A.Schwenk, J.Simonis, D.T.Yordanov

Ground-state electromagnetic moments of calcium isotopes

NUCLEAR MOMENTS 43,45,47,49,51Ca; measured hyperfine spectra, hyperfine structure constants, J, g factors, magnetic and quadrupole moments using collinear laser spectroscopy (COLLAPS) and radiofrequency quadrupole (RFQ) beam cooler ISCOOL at ISOLDE-CERN facility. Comparison with theoretical predictions using KB3G, GXPF1A, SDPF.SM and three-nucleon forces (NN+3N). Ca beams produced in bombardment of uranium carbide target with 1.4-GeV protons at ISOLDE-CERN.

doi: 10.1103/PhysRevC.91.041304
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2014BI10      Phys.Rev.Lett. 113, 052502 (2014)

M.L.Bissell, J.Papuga, H.Naidja, K.Kreim, K.Blaum, M.De Rydt, R.F.Garcia Ruiz, H.Heylen, M.Kowalska, R.Neugart, G.Neyens, W.Nortershauser, F.Nowacki, M.M.Rajabali, R.Sanchez, K.Sieja, D.T.Yordanov

Proton-Neutron Pairing Correlations in the Self-Conjugate Nucleus 38K Probed via a Direct Measurement of the Isomer Shift

ATOMIC PHYSICS 38K; measured frequency of hyperfine spectra; deduced isomer shift, rms charge radii. Comparison with large-scale shell model calculations.

doi: 10.1103/PhysRevLett.113.052502
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2014BO09      Acta Phys.Pol. B45, 343 (2014)

S.Bottoni, S.Leoni, B.Fornal, R.Raabe, G.Benzoni, A.Bracco, F.C.L.Crespi, A.Morales, B.Bednarczyk, N.Cieplicka, W.Krolas, A.Maj, B.Szpak, M.Callens, J.Bouma, J.Elseviers, F.Falvigny, R.Orlandi, K.Rusek, P.Reiter, M.Seidlitz, S.Klupp, D.Mucher, G.Georgiev, D.Balabanski, M.Sferrazza, M.Kowalska, E.Rapisarda

γ Spectroscopy of Neutron-rich Nuclei with A ≈ 100 Produced by Cluster Transfer Reactions at REX-ISOLDE

NUCLEAR REACTIONS 7Li(98Rb, X)98Sr/99Sr/99Y/100Y, (98Sr, X)99Y/100Zr, E=2.85 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced cluster-transfer mechanisms.

doi: 10.5506/APhysPolB.45.343
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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,198,198mTl, 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 (UCx) 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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2014KR04      Phys.Lett. B 731, 97 (2014)

K.Kreim, M.L.Bissell, J.Papuga, K.Blaum, M.De Rydt, R.F.Garcia Ruiz, S.Goriely, H.Heylen, M.Kowalska, R.Neugart, G.Neyens, W.Nortershauser, M.M.Rajabali, R.Sanchez Alarcon, H.H.Stroke, D.T.Yordanov

Nuclear charge radii of potassium isotopes beyond N = 28

ATOMIC PHYSICS 38,39,42,44,46,47,48,49,50,51K; measured optical spectra, hyperfine structure; deduced spins, mean square charge radii. Comparison with HFB-24 and DD-ME2 theoretical models.

doi: 10.1016/j.physletb.2014.02.012
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2014KR09      Phys.Rev. C 90, 024301 (2014)

S.Kreim, D.Beck, K.Blaum, Ch.Borgmann, M.Breitenfeldt, T.E.Cocolios, A.Gottberg, F.Herfurth, M.Kowalska, Yu.A.Litvinov, D.Lunney, V.Manea, T.M.Mendonca, S.Naimi, D.Neidherr, M.Rosenbusch, L.Schweikhard, Th.Stora, F.Wienholtz, R.N.Wolf, K.Zuber

Competition between pairing correlations and deformation from the odd-even mass staggering of francium and radium isotopes

ATOMIC MASSES 222,224,226,227,228,229,230,231,232,233Fr, 233,234Ra[isotopes from U(p, F), E=1.4 GeV]; measured TOF-ICR resonances, frequency ratios, mass excesses using ISOLTRAP Penning-trap at ISOLDE-CERN facility; deduced odd-even staggering in binding energies, S(2n), three-point pairing-gap estimator Δ3(N); calculated Nilsson single-particle level schemes for N=128-148 nuclei using HF and HFB approaches, and connections to the single-particle level density and nuclear quadrupole and octupole deformations. Comparison with mass measurements using ESR at GSI and AME-2003 evaluation.

RADIOACTIVITY 233Fr(β-)[from U(p, F), E=1.4 GeV]; measured (ion)β correlations, ground-state half-life.

doi: 10.1103/PhysRevC.90.024301
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2014PA45      Phys.Rev. C 90, 034321 (2014)

J.Papuga, M.L.Bissell, K.Kreim, C.Barbieri, K.Blaum, M.De Rydt, T.Duguet, R.F.Garcia Ruiz, H.Heylen, M.Kowalska, R.Neugart, G.Neyens, W.Nortershauser, M.M.Rajabali, R.Sanchez, N.Smirnova, V.Soma, D.T.Yordanov

Shell structure of potassium isotopes deduced from their magnetic moments

NUCLEAR MOMENTS 38,38m,39,42,44,46,47,48,49,50,51K; measured hyperfine structure using high-resolution collinear laser spectroscope COLLAPS and Paul trap ISCOOL at ISOLDE-CERN; deduced J, magnetic moments, configurations, magnetic hyperfine parameters. Potassium isotopes produced in U(p, X), E=1 GeV at ISOLDE-CERN. 38,40,41,42,43,44,45,46,47,48,49,51K; deduced hyperfine structure anomalies. Comparison with shell model calculations using SDPF-NR and SDPF-U effective interactions, and with previous experimental results.

doi: 10.1103/PhysRevC.90.034321
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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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2013PA11      Phys.Rev.Lett. 110, 172503 (2013)

J.Papuga, M.L.Bissell, K.Kreim, K.Blaum, B.A.Brown, M.De Rydt, R.F.Garcia Ruiz, H.Heylen, M.Kowalska, R.Neugart, G.Neyens, W.Nortershauser, T.Otsuka, M.M.Rajabali, R.Sanchez, Y.Utsuno, D.T.Yordanov

Spins and Magnetic Moments of 49K and 51K: Establishing the 1/2+ and 3/2+ Level Ordering Beyond N=28

NUCLEAR MOMENTS 39,47,49,51K; measured hyperfine spectra; deduced dipole magnetic moments, g-factors. Comparison with available data, shell model calculations.

doi: 10.1103/PhysRevLett.110.172503
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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 184,186,188,190,192,194,196,198,200,202,204Tl.

doi: 10.1103/PhysRevC.88.054304
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2013WI06      Nature(London) 498, 346 (2013), Erratum Nature(London) 498, 346 (2013)

F.Wienholtz, D.Beck, K.Blaum, Ch.Borgmann, M.Breitenfeldt, R.B.Cakirli, S.George, F.Herfurth, J.D.Holt, M.Kowalska, S.Kreim, D.Lunney, V.Manea, J.Menendez, D.Neidherr, M.Rosenbusch, L.Schweikhard, A.Schwenk, J.Simonis, J.Stanja, K.Zuber

Masses of exotic calcium isotopes pin down nuclear forces

ATOMIC MASSES 51,52,53,54Ca; measured TOF, ion cyclotron resonance frequency ratio; deduced masses. ISOLTRAP high-resolution Penning trap, shell-model calculations with KB3G and GXPF1A interactions.

doi: 10.1038/nature12226
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2013WO05      Int.J. Mass Spectrom. 349-350, 123 (2013)

R.N.Wolf, F.Wienholtz, D.Atanasov, D.Beck, K.Blaum, Ch.Borgmann, F.Herfurth, M.Kowalska, S.Kreim, Yu.A.Litvinov, D.Lunney, V.Manea, D.Neidherr, M.Rosenbusch, L.Schweikhard, J.Stanja, K.Zuber

ISOLTRAP's multi-reflection time-of-flight mass separator/spectrometer

ATOMIC MASSES 137Eu; measured time of flight of ions ejected from the precision Penning trap as a function of excitation frequency; deduced masses. Comparison with available data.

doi: 10.1016/j.ijms.2013.03.020
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2013WO06      Phys.Rev.Lett. 110, 041101 (2013)

R.N.Wolf, D.Beck, K.Blaum, Ch.Bohm, Ch.Borgmann, M.Breitenfeldt, N.Chamel, S.Goriely, F.Herfurth, M.Kowalska, S.Kreim, D.Lunney, V.Manea, E.Minaya Ramirez, S.Naimi, D.Neidherr, M.Rosenbusch, L.Schweikhard, J.Stanja, F.Wienholtz, K.Zuber

Plumbing Neutron Stars to New Depths with the Binding Energy of the Exotic Nuclide 82Zn

ATOMIC MASSES 82Zn; measured time-of-flight resonance, mean frequency ratio; deduced mass. ISOLTRAP setup at the ISOLDE-CERN facility.

doi: 10.1103/PhysRevLett.110.041101
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2013YO02      Phys.Rev.Lett. 110, 192501 (2013)

D.T.Yordanov, D.L.Balabanski, J.Bieron, M.L.Bissell, K.Blaum, I.Budincevic, S.Fritzsche, N.Frommgen, G.Georgiev, Ch.Geppert, M.Hammen, M.Kowalska, K.Kreim, A.Krieger, R.Neugart, W.Nortershauser, J.Papuga, S.Schmidt

Spins, Electromagnetic Moments, and Isomers of 107-129Cd

NUCLEAR MOMENTS 107,109,111,113,115,117,119,121,123,125,127,129Cd; measured the atomic hyperfine structure by the ion-beam fluorescence as a function of the laser frequency scanned via the Doppler effect; deduced J, hyperfine parameters, electromagnetic dipole and quadrupole moments. Comparison with available data.

doi: 10.1103/PhysRevLett.110.192501
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2012CH51      J.Phys.:Conf.Ser. 381, 012071 (2012)

B.Cheal, J.Billowes, M.L.Bissell, K.Blaum, F.C.Charlwood, K.T.Flanagan, D.H.Forest, Ch.Geppert, M.Kowalska, K.Kreim, A.Krieger, J.Kramer, K.M.Lynch, E.Mane, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, T.J.Procter, M.M.Rajabali, H.H.Stroke, P.Vingerhoets, D.T.Yordanov, M.Zakova

Laser spectroscopy of gallium isotopes beyond N = 50

NUCLEAR MOMENTS 82Ga; measured nuclear moments using laser spectroscopy; deduced hfs, hyperfine coefficients, g-factor, magnetic dipole moment, electric quadrupole from fitting observed hfs of the ground state.

doi: 10.1088/1742-6596/381/1/012071
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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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2012KR04      Phys.Rev.Lett. 108, 142501 (2012)

A.Krieger, K.Blaum, M.L.Bissell, N.Frommgen, Ch.Geppert, M.Hammen, K.Kreim, M.Kowalska, J.Kramer, T.Neff, R.Neugart, G.Neyens, W.Nortershauser, Ch.Novotny, R.Sanchez, D.T.Yordanov

Nuclear Charge Radius of 12Be

NUCLEAR MOMENTS 12Be; measured isotope shifts; deduced nuclear charge radii. Comparison with available data and FMD calculations.

doi: 10.1103/PhysRevLett.108.142501
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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,63,64,65,66Mn, 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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2012PR11      Phys.Rev. C 86, 034329 (2012)

T.J.Procter, J.Billowes, M.L.Bissell, K.Blaum, F.C.Charlwood, B.Cheal, K.T.Flanagan, D.H.Forest, S.Fritzsche, Ch.Geppert, H.Heylen, M.Kowalska, K.Kreim, A.Krieger, J.Kramer, K.M.Lynch, E.Mane, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, M.M.Rajabali, H.H.Stroke, P.Vingerhoets, D.T.Yordanov, M.Zakova

Nuclear mean-square charge radii of 63, 64, 66, 68-82Ga nuclei: No anomalous behavior at N=32

NUCLEAR REACTIONS Zr(p, X)63Ga/64Ga/66Ga/68Ga/69Ga/70Ga/71Ga/72Ga/73Ga/74Ga/75Ga/76Ga/77Ga/78Ga/79Ga/80Ga/80mGa/81Ga/82Ga, E=1.4 GeV; measured optical spectra, hyperfine coefficients, isotope shifts, mean-square charge radii, J, magnetic dipole and electric quadrupole moments using collinear laser spectroscopy. RILIS source at ISOLDE, CERN facility.

NUCLEAR MOMENTS 63,64,66,68,69,70,71,72,73,74,75,76,77,78,79,80,80m,81,82Ga; measured optical spectra, hyperfine coefficients, isotope shifts, mean-square charge radii, J, magnetic dipole and electric quadrupole moments using collinear laser spectroscopy. RILIS source at ISOLDE, CERN facility. Comparison with shell-model calculations. Z=30, 32, N=30-55; systematics of energies of first 2+ states and E(first 4+)/E(first 2+). Z=28, 30, 31, 36, N=3-0-52; systematics of mean-square charge radii.

doi: 10.1103/PhysRevC.86.034329
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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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2012YO01      Phys.Rev.Lett. 108, 042504 (2012)

D.T.Yordanov, M.L.Bissell, K.Blaum, M.De Rydt, Ch.Geppert, M.Kowalska, J.Kramer, K.Kreim, A.Krieger, P.Lievens, T.Neff, R.Neugart, G.Neyens, W.Nortershauser, R.Sanchez, P.Vingerhoets

Nuclear Charge Radii of 21-32Mg

ATOMIC PHYSICS 21,22,23,24,25,26,27,28,29,30,31,32Mg; measured the atomic isotope shift representing the transition frequencies with respect to the fine structure levels; deduced rms charge radii, evolution of nuclear shape through deformation regions. Comparison with theory and differential mean square radii, application of laser-induced orientation for isotope shift measurements.

doi: 10.1103/PhysRevLett.108.042504
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2011BL09      J.Phys.:Conf.Ser. 312, 092001 (2011)

K.Blaum, M.Block, R.B.Cakirli, S.Eliseev, M.Kowalska, S.Kreim, Y.A.Litvinov, Sz.Nagy, W.Nortershauser, D.T.Yordanov

Measurements of ground-state properties for nuclear structure studies by precision mass and laser spectroscopy

NUCLEAR STRUCTURE 7,8,9,10,11Be; calculated charge radius using FMD (fermionic molecular dynamics); compared with data obtained from isotope shift.

doi: 10.1088/1742-6596/312/9/092001
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2011MA45      Phys.Rev. C 84, 024303 (2011)

E.Mane, B.Cheal, J.Billowes, M.L.Bissell, K.Blaum, F.C.Charlwood, K.T.Flanagan, D.H.Forest, Ch.Geppert, M.Kowalska, A.Krieger, J.Kramer, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, M.M.Rajabali, R.Sanchez, M.Schug, H.H.Stroke, P.Vingerhoets, D.T.Yordanov, M.Zakova

Ground-state spins and moments of 72, 74, 76, 78Ga nuclei

NUCLEAR MOMENTS 72,74,76,78,80Ga; measured hyperfine structure using laser spectroscopy and RILIS source at ISOLDE, CERN; deduced hyperfine structure parameters, ground state spins, magnetic dipole moments, electric quadrupole moments, configurations. Comparison with Shell Model calculations.

NUCLEAR STRUCTURE 74,76,78,80Ga; calculated levels, J, π using shell-model with the jj44b effective interaction, and proton configuration. 71,73,75,77,79,81Ga; calculated percentage occupation of the πp3/2 and πf5/2 orbitals in the ground states.

doi: 10.1103/PhysRevC.84.024303
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2011MA48      Phys.Rev. C 84, 034313 (2011)

K.Marinova, W.Geithner, M.Kowalska, K.Blaum, S.Kappertz, M.Keim, S.Kloos, G.Kotrotsios, P.Lievens, R.Neugart, H.Simon, S.Wilbert

Charge radii of neon isotopes across the sd neutron shell

NUCLEAR MOMENTS 17,18,19,20,21,22,23,24,25,26,27,28Ne; measured isotope shifts, hyperfine structure; deduced mean-square charge radii, β2 deformation parameters. Collinear laser spectroscopy. Systematics of first excited 2+ states, B(E2) values, deformation parameters for even-A nuclei. Comparison with several theoretical model calculation. Relevance to nuclei in the 'island of inversion'.

NUCLEAR REACTIONS Ca, U(p, X)17Ne/18Ne/19Ne/23Ne/24Ne/25Ne/26Ne/27Ne/28Ne, E=1.4 GeV; measured production yields at CERN-ISOLDE on-line isotope separator.

doi: 10.1103/PhysRevC.84.034313
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2011VI03      Phys.Lett. B 703, 34 (2011)

P.Vingerhoets, K.T.Flanagan, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, M.De Rydt, D.H.Forest, Ch.Geppert, M.Honma, M.Kowalska, J.Kramer, K.Kreim, A.Krieger, R.Neugart, G.Neyens, W.Nortershauser, J.Papuga, T.J.Procter, M.M.Rajabali, R.Sanchez, H.H.Stroke, D.T.Yordanov

Magnetic and quadrupole moments of neutron deficient 58-62Cu isotopes

NUCLEAR MOMENTS 58,59,60,61,62Cu; measured hyperfine spectrum; deduced ground state nuclear moments, g factors, quadrupole moments, ground-state hyperfine parameters. Comparison with large-scale shell model calculations, GXPF1A effective interaction.

NUCLEAR STRUCTURE 57,58,59,60,61,62,63,64,65,66,67,68Cu; calculated level energies, J, π, g factors, quadrupole moments. GXPF1A effective interaction. Comparison with experimental data.

doi: 10.1016/j.physletb.2011.07.050
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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 112,114,115,116,117,118,119,120,121,122,123,124Ag, 114,120,122,123,124,126,128Cd; 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 δVpn. Comparison with previous data and AME-2003.

doi: 10.1103/PhysRevC.81.034313
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2010CH16      Phys.Rev.Lett. 104, 252502 (2010)

B.Cheal, E.Mane, J.Billowes, M.L.Bissell, K.Blaum, B.A.Brown, F.C.Charlwood, K.T.Flanagan, D.H.Forest, C.Geppert, M.Honma, A.Jokinen, M.Kowalska, A.Krieger, J.Kramer, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, M.Schug, H.H.Stroke, P.Vingerhoets, D.T.Yordanov, M.Zakova

Nuclear Spins and Moments of Ga Isotopes Reveal Sudden Structural Changes between N=40 and N=50

NUCLEAR REACTIONS U(p, X)67Ga/69Ga/71Ga/73Ga/75Ga/77Ga/79Ga/81Ga, E=1.4 GeV; measured optical hfs spectra; deduced ground J, π, magnetic dipole and electric quadrupole moments, anomalous ground state spins.

doi: 10.1103/PhysRevLett.104.252502
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2010CH50      Phys.Rev. C 82, 051302 (2010)

B.Cheal, J.Billowes, M.L.Bissell, K.Blaum, F.C.Charlwood, K.T.Flanagan, D.H.Forest, S.Fritzsche, Ch.Geppert, A.Jokinen, M.Kowalska, A.Krieger, J.Kramer, E.Mane, I.D.Moore, R.Neugart, G.Neyens, W.Nortershauser, M.M.Rajabali, M.Schug, H.H.Stroke, P.Vingerhoets, D.T.Yordanov, M.Zakova

Discovery of a long-lived low-lying isomeric state in 80Ga

NUCLEAR MOMENTS 80Ga; measured optical hyperfine structure spectra, spins, magnetic dipole moments, electric quadrupole moments, half-lives using Collinear laser spectroscopy at ISOLDE, CERN. 80Ga; deduced levels, J, π, isomer, configurations. Comparison with shell-model calculations in restricted and full pfg-model space with a 56Ni core

doi: 10.1103/PhysRevC.82.051302
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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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2010FL02      Phys.Rev. C 82, 041302 (2010)

K.T.Flanagan, P.Vingerhoets, M.L.Bissell, K.Blaum, B.A.Brown, B.Cheal, M.De Rydt, D.H.Forest, Ch.Geppert, M.Honma, M.Kowalska, J.Kramer, A.Krieger, E.Mane, R.Neugart, G.Neyens, W.Nortershauser, M.Schug, H.H.Stroke, D.T.Yordanov

Experimental determination of an Iπ=2- ground state in 72, 74Cu

NUCLEAR MOMENTS 72Cu, 74Cu; measured resonance fluorescence spectra, hyperfine structure parameters, spins, static magnetic dipole and electric quadrupole moments of the ground states using collinear laser spectroscopy at the CERN on-Line Isotope Mass Separator (ISOLDE) facility. Comparison with shell-model calculations using the JUN45 interaction.

NUCLEAR STRUCTURE 71,72,73,74,75Cu; calculated levels, J, π using large-scale shell-model calculations and several interactions.

doi: 10.1103/PhysRevC.82.041302
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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, 97Kr

ATOMIC MASSES 80,86,87,94,96,97Kr; 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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2010VI07      Phys.Rev. C 82, 064311 (2010)

P.Vingerhoets, K.T.Flanagan, M.Avgoulea, J.Billowes, M.L.Bissell, K.Blaum, B.A.Brown, B.Cheal, M.De Rydt, D.H.Forest, Ch.Geppert, M.Honma, M.Kowalska, J.Kramer, A.Krieger, E.Mane, R.Neugart, G.Neyens, W.Nortershauser, T.Otsuka, M.Schug, H.H.Stroke, G.Tungate, D.T.Yordanov

Nuclear spins, magnetic moments, and quadrupole moments of Cu isotopes from N=28 to N=46: Probes for core polarization effects

NUCLEAR MOMENTS 61,62,63,64,65,66,67,68,69,70,71,72,73,74,75Cu; measured hyperfine structure spectra, spins, magnetic dipole moments, electric quadrupole moments using collinear laser spectroscopy at CERN-ISOLDE. RILIS source and Paul trap ISCOOL. Comparison with shell-model calculations.

NUCLEAR REACTIONS U(p, X)61Cu/62Cu/63Cu/64Cu/65Cu/66Cu/67Cu/68Cu/68mCu/69Cu/70Cu/70mCu/71Cu/72Cu/73Cu/74Cu/75Cu/, E=1.4 GeV; measured production yields.

NUCLEAR STRUCTURE 57,58,59,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,77,79Cu; calculated levels, J, π, g factors and quadrupole moments using large-scale shell model starting from a 56Ni core

doi: 10.1103/PhysRevC.82.064311
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2010YO01      Phys.Rev.Lett. 104, 129201 (2010)

D.T.Yordanov, K.Blaum, M.De Rydt, M.Kowalska, R.Neugart, G.Neyens, I.Hamamoto

Comment on "Intruder Configurations in the A=33 Isobars: 33Mg and 33Al"

NUCLEAR STRUCTURE 33Mg, 33Al; calculated magnetic moments; deduced 33Mg π. Comparison with experimental data.

doi: 10.1103/PhysRevLett.104.129201
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2010ZA02      J.Phys.(London) G37, 055107 (2010)

M.Zakova, Z.Andjelkovic, M.L.Bissell, K.Blaum, G.W.F.Drake, Ch.Geppert, M.Kowalska, J.Kramer, A.Krieger, M.Lochmann, T.Neff, R.Neugart, W.Nortershauser, R.Sanchez, F.Schmidt-Kaler, D.Tiedemann, Z.-C.Yan, D.T.Yordanov, C.Zimmermann

Isotope shift measurements in the 2s1/2 → 2p3/2 transition of Be+ and extraction of the nuclear charge radii for 7, 10, 11Be

ATOMIC PHYSICS 7,10,11Be; measured laser beam frequencies; deduced isotope shifts, nuclear charge radii, cluster structures. Comparison with nuclear structure calculations.

doi: 10.1088/0954-3899/37/5/055107
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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 99,100,101,102,103,104,105,106,107,108,109Cd; 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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2009CA03      Phys.Rev.Lett. 102, 082501 (2009)

R.B.Cakirli, R.F.Casten, R.Winkler, K.Blaum, M.Kowalska

Enhanced Sensitivity of Nuclear Binding Energies to Collective Structure

NUCLEAR STRUCTURE Sn, Ba, Dy, Hf, Pb; calculated two-neutron separation energies.

doi: 10.1103/PhysRevLett.102.082501
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2009FL03      Phys.Rev.Lett. 103, 142501 (2009)

K.T.Flanagan, P.Vingerhoets, M.Avgoulea, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, M.De Rydt, V.N.Fedosseev, D.H.Forest, Ch.Geppert, U.Koster, M.Kowalska, J.Kramer, K.L.Kratz, A.Krieger, E.Mane, B.A.Marsh, T.Materna, L.Mathieu, P.L.Molkanov, R.Neugart, G.Neyens, W.Nortershauser, M.D.Seliverstov, O.Serot, M.Schug, M.A.Sjoedin, J.R.Stone, N.J.Stone, H.H.Stroke, G.Tungate, D.T.Yordanov, Yu.M.Volkov

Nuclear Spins and Magnetic Moments of 71, 73, 75Cu: Inversion of π2p3/2 and π1f5/2 Levels in 75Cu

NUCLEAR MOMENTS 71,73,75Cu; measured hfs spectra; deduced ground-state spins, magnetic moments, hyperfine parameters, shell inversion. Comparison with large-scale shell-model calculation.

doi: 10.1103/PhysRevLett.103.142501
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Data from this article have been entered in the XUNDL database. For more information, click here.


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
Citations: PlumX Metrics


2009KR05      Phys.Lett. B 678, 465 (2009)

J.Kramer, K.Blaum, M.De Rydt, K.T.Flanagan, Ch.Geppert, M.Kowalska, P.Lievens, R.Neugart, G.Neyens, W.Nortershauser, H.H.Stroke, P.Vingerhoets, D.T.Yordanov

Nuclear ground-state spin and magnetic moment of 21Mg

NUCLEAR MOMENTS 21Mg [from Si(p, X), E=1.4 GeV]; measured hfs; deduced ground state spin, g-factor, μ using collinear laser spectroscopy and NMR; calculated J, π, configuration. Comparison with shell model calculations and discussed 21F and other mirror pairs.

doi: 10.1016/j.physletb.2009.06.063
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Data from this article have been entered in the XUNDL database. For more information, click here.


2009MA75      Eur.Phys.J. A 42, 503 (2009)

E.Mane, J.Billowes, K.Blaum, P.Campbell, B.Cheal, P.Delahaye, K.T.Flanagan, D.H.Forest, H.Franberg, C.Geppert, T.Giles, A.Jokinen, M.Kowalska, R.Neugart, G.Neyens, W.Nortershauser, I.Podadera, G.Tungate, P.Vingerhoets, D.T.Yordanov

An ion cooler-buncher for high-sensitivity collinear laser spectroscopy at ISOLDE

NUCLEAR MOMENTS 46K; measured hfs. Testing of new laser spectroscopy technique.

doi: 10.1140/epja/i2009-10828-0
Citations: PlumX Metrics


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 220,223,224,225,226,227,228,229Rn; measured masses using ISOLTRAP mass spectrometer.

doi: 10.1103/PhysRevLett.102.112501
Citations: PlumX Metrics


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 136,137,138,139,140,141,142,143,144,145,146Xe; 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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2009NO02      Phys.Rev.Lett. 102, 062503 (2009)

W.Nortershauser, D.Tiedemann, M.Zakova, Z.Andjelkovic, K.Blaum, M.L.Bissell, R.Cazan, G.W.F.Drake, Ch.Geppert, M.Kowalska, J.Kramer, A.Krieger, R.Neugart, R.Sanchez, F.Schmidt-Kaler, Z.-C.Yan, D.T.Yordanov, C.Zimmermann

Nuclear Charge Radii of 7, 9, 10Be and the One-Neutron Halo Nucleus 11Be

NUCLEAR MOMENTS 7,9,10,11Be; measured isotope shifts; deduced nuclear charge radii.

doi: 10.1103/PhysRevLett.102.062503
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Data from this article have been entered in the XUNDL database. For more information, click here.


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

doi: 10.1103/PhysRevLett.101.252502
Citations: PlumX Metrics


2008KO05      Phys.Rev. C 77, 034307 (2008)

M.Kowalska, D.T.Yordanov, K.Blaum, P.Himpe, P.Lievens, S.Mallion, R.Neugart, G.Neyens, N.Vermeulen

Nuclear ground-state spins and magnetic moments of 27Mg, 29Mg, and 31Mg

NUCLEAR MOMENTS 25,27,29,31Mg [from 238U(p, X), E=1.4 GeV]; measured J, π of ground states, magnetic moments, hyperfine structure using laser and β-NMR spectroscopy. Compared with shell-model calculations.

doi: 10.1103/PhysRevC.77.034307
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Data from this article have been entered in the XUNDL database. For more information, click here.


2008NE11      Phys.Rev.Lett. 101, 132502 (2008)

R.Neugart, D.L.Balabanski, K.Blaum, D.Borremans, P.Himpe, M.Kowalska, P.Lievens, S.Mallion, G.Neyens, N.Vermeulen, D.T.Yordanov

Precision Measurement of 11Li Moments: Influence of Halo Neutrons on the 9Li Core

NUCLEAR MOMENTS 11Li; measured electric dipole and quadrupole moments using a NMR based technique.

doi: 10.1103/PhysRevLett.101.132502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2007YO06      Phys.Rev.Lett. 99, 212501 (2007)

D.T.Yordanov, M.Kowalska, K.Blaum, M.De Rydt, K.T.Flanagan, P.Lievens, R.Neugart, G.Neyens, H.H.Stroke

Spin and Magnetic Moment of 33Mg: Evidence for a Negative-Parity Intruder Ground State

RADIOACTIVITY 33Mg(β-) [from U(p, X), E-1.4 GeV]; measured β-decay anisotropy using laser spectroscopy and nuclear magnetic resonance techniques. 33Mg deduced ground state spin and magnetic moment.

doi: 10.1103/PhysRevLett.99.212501
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2006HI18      Phys.Lett. B 643, 257 (2006)

P.Himpe, G.Neyens, D.L.Balabanski, G.Belier, D.Borremans, J.M.Daugas, F.de Oliveira Santos, M.De Rydt, K.Flanagan, G.Georgiev, M.Kowalska, S.Mallion, I.Matea, P.Morel, Yu.E.Penionzhkevich, N.A.Smirnova, C.Stodel, K.Turzo, N.Vermeulen, D.Yordanov

g factors of 31, 32, 33Al: Indication for intruder configurations in the 33Al ground state

NUCLEAR MOMENTS 31,32,33Al [from 9Be(36S, X), E=77.5 MeV/nucleon]; measured J, π of ground states, magnetic moments, hyperfine structure using laser and β-NMR spectroscopy; deduced g factors, magnetic dipole moments. Compared with shell-model calculations.

doi: 10.1016/j.physletb.2006.10.26
Citations: PlumX Metrics


2006KO55      Hyperfine Interactions 171, 167 (2006)

M.Kowalska

Mg isotopes and the disappearance of magic N=20: Laser and β-NMR studies

RADIOACTIVITY 27,29,31,33Mg(β-) [from U(p, X)]; measured β-asymmetry and hfs, β-NMR spectra from polarized source. 31Mg deduced ground-state J, π, μ, quadrupole moment.

doi: 10.1007/s10751-007-9512-9
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2006SI40      Hyperfine Interactions 171, 173 (2006)

R.Sifi, F.Le Blanc, N.Barre, L.Cabaret, J.Crawford, M.Ducourtieux, S.Essabaa, J.Genevey, G.Huber, M.Kowalska, C.Lau, J.K.P.Lee, G.Le Scornet, J.Oms, J.Pinard, B.Roussiere, J.Sauvage, M.Seliverstov, H.Stroke, and the ISOLDE Collaboration

Laser spectroscopy measurements of neutron-rich tellurium isotopes by COMPLIS

NUCLEAR MOMENTS 120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136Te; measured hfs, isotope shifts; deduced μ, quadrupole moments, radii. Laser spectroscopy, comparison with model predictions.

doi: 10.1007/s10751-006-9505-0
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2005BO45      Phys.Rev. C 72, 044309 (2005); Erratum Phys.Rev. C 72, 059902 (2005)

D.Borremans, D.L.Balabanski, K.Blaum, W.Geithner, S.Gheysen, P.Himpe, M.Kowalska, J.Lassen, P.Lievens, S.Mallion, R.Neugart, G.Neyens, N.Vermeulen, D.Yordanov

New measurement and reevaluation of the nuclear magnetic and quadrupole moments of 8Li and 9Li

RADIOACTIVITY 8,9Li(β-) [from Ta(p, X)]; measured β-asymmetries, β-NMR spectra from polarized sources. 8,9Li deduced quadrupole moments. 9Li deduced μ. Comparisons with previous results and model predictions.

doi: 10.1103/PhysRevC.72.044309
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2005KO41      Eur.Phys.J. A 25, Supplement 1, 193 (2005)

M.Kowalska, D.Yordanov, K.Blaum, D.Borremans, P.Himpe, P.Lievens, S.Mallion, R.Neugart, G.Neyens, N.Vermeulen

Laser and β-NMR spectroscopy on neutron-rich magnesium isotopes

RADIOACTIVITY 31Mg(β-) [from U(p, X)]; measured β-asymmetry and hfs, β-NMR spectra from polarized source. 31Mg deduced ground-state J, π, μ.

doi: 10.1140/epjad/i2005-06-041-1
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2005KO50      Hyperfine Interactions 162, 109 (2005)

M.Kowalska, for the IS 427 Collaboration at ISOLDE/CERN

Laser Spectroscopy and β-NMR Measurements of Short-Lived Mg Isotopes

RADIOACTIVITY 29,31Mg(β-) [from U(p, X)]; measured β-asymmetry, β-NMR spectra from polarized source. 31Mg deduced g-factor, ground-state J, π.

doi: 10.1007/s10751-005-9224-y
Citations: PlumX Metrics


2005NE01      Phys.Rev.Lett. 94, 022501 (2005)

G.Neyens, M.Kowalska, D.Yordanov, K.Blaum, P.Himpe, P.Lievens, S.Mallion, R.Neugart, N.Vermeulen, Y.Utsuno, T.Otsuka

Measurement of the Spin and Magnetic Moment of 31Mg: Evidence for a Strongly Deformed Intruder Ground State

RADIOACTIVITY 31Mg(β-) [from U(p, X)]; measured β-asymmetry, β-NMR spectra from polarized source. 31Mg deduced ground-state J, π, μ.

doi: 10.1103/PhysRevLett.94.022501
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