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NSR database version of May 23, 2024.

Search: Author = S.George

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2024WA19      Phys.Rev. C 109, 035806 (2024)

K.-L.Wang, A.Estrade, M.Famiano, H.Schatz, M.Barber, T.Baumann, D.Bazin, K.Bhatt, T.Chapman, J.Dopfer, B.Famiano, S.George, M.Giles, T.Ginter, J.Jenkins, S.Jin, L.Klankowski, S.Liddick, Z.Meisel, N.Nepal, J.Pereira, N.Rijal, A.M.Rogers, O.B.Tarasov, G.Zimba

Mass measurements of neutron-rich nuclei near N=70

doi: 10.1103/PhysRevC.109.035806
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2020ME06      Phys.Rev. C 101, 052801 (2020)

Z.Meisel, S.George, S.Ahn, D.Bazin, B.A.Brown, J.Browne, J.F.Carpino, H.Chung, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers

Nuclear mass measurements map the structure of atomic nuclei and accreting neutron stars

ATOMIC MASSES 48,49Ar, 52,53,54,55,56,57Sc, 56,57,58,59Ti, 57,58,59,60,61,62V, 64,65Cr, 67,68Mn, 67,68,69,70Fe; measured time of flight, ΔE, Bπ, and mass excess using the A1900 fragment separator and the S800 spectrograph for particle identification at the NSCL-MSU facility; deduced S(2n), and Dn(Z, A)=S(n)(Z, A+1)-S(n)(Z, A), related to pairing gap. Comparison with available evaluated data in AME2016, and with shell model calculations using GX1A Hamiltonian for Sc isotopes. Discussion of upper-Z limit for N=34 subshell closure and lower-Z limit for N=40 subshell, and impact on electron-capture cooling in neutron star crusts. Isotopes produced in 9Be(82Se, X), E=140 MeV/nucleon reaction.

doi: 10.1103/PhysRevC.101.052801
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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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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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2019KA30      Phys.Rev. C 100, 015502 (2019);Erratum Phys. Rev. C 101, 049901 (2020)

J.Karthein, D.Atanasov, K.Blaum, M.Breitenfeldt, V.Bondar, S.George, L.Hayen, D.Lunney, V.Manea, M.Mougeot, D.Neidherr, L.Schweikhard, N.Severijns, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber

QEC-value determination for 21Na → 21Ne and 23Mg → 23Na mirror-nuclei decays using high-precision mass spectrometry with ISOLTRAP at the CERN ISOLDE facility

ATOMIC MASSES 21Na, 23Mg; measured time-of-flight spectrum using laser ionization, Ramsey-type ion-cyclotron resonances, cyclotron frequency ratios using ISOLTRAP at ISOLDE-CERN facility; deduced Q(ϵ) values. Comparison with previous measurements.

RADIOACTIVITY 21Na, 23Mg(EC)[from SiC(p, X), E=1.4 GeV from CERN Proton-Synchrotron booster, followed by magnetic mass separation using the general-purpose separator (GPS), laser ion source VADLIS, and ISOLDE resonant ionization laser ion source RILIS]; deduced Q(ϵ) from measured mass excesses, logft, up-down Vud element of the Cabibbo-Kobayashi-Maskawa quark mixing matrix. Comparison between Vud values for mirror-nuclei: 19Ne, 29P, 35Ar, 37K and 21Na.

doi: 10.1103/PhysRevC.100.015502
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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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2018MO14      Phys.Rev.Lett. 120, 232501 (2018)

M.Mougeot, D.Atanasov, K.Blaum, K.Chrysalidis, T.Day Goodacre, D.Fedorov, V.Fedosseev, S.George, F.Herfurth, J.D.Holt, D.Lunney, V.Manea, B.Marsh, D.Neidherr, M.Rosenbusch, S.Rothe, L.Schweikhard, A.Schwenk, C.Seiffert, J.Simonis, S.R.Stroberg, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber

Precision Mass Measurements of 58-63Cr: Nuclear Collectivity Towards the N=40 Island of Inversion

ATOMIC MASSES 58,59,60,61,62,63Cr; measured cyclotron frequency, TOF; deduced mass excesses. Comparison with AME16, theoretical calculations.

doi: 10.1103/PhysRevLett.120.232501
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2017AL34      Phys.Rev. C 96, 044325 (2017)

N.A.Althubiti, D.Atanasov, K.Blaum, T.E.Cocolios, T.Day Goodacre, G.J.Farooq-Smith, D.V.Fedorov, V.N.Fedosseev, S.George, F.Herfurth, K.Heyde, S.Kreim, D.Lunney, K.M.Lynch, V.Manea, B.A.Marsh, D.Neidherr, M.Rosenbusch, R.E.Rossel, S.Rothe, L.Schweikhard, M.D.Seliverstov, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber, for the ISOLTRAP Collaboration

Spectroscopy of the long-lived excited state in the neutron-deficient nuclides 195, 197, 199Po by precision mass measurements

ATOMIC MASSES 195,195m,196,197,197m,199m,203,208Po; measured cyclotron frequency ratios, mass excesses using ISOLTRAP Penning-trap mass spectrometer at ISOLDE-CERN. The Po isotopes produced in U(p, X), E=1.4 GeV using RILIS and high-resolution mass spectrometer. 191m,193mPb, 195m,197mPo, 199m,201mRn, 203m,205mRa; deduced level energies of 13/2+ isomers in odd-A polonium isotopes from mass measurements, and other isomers from α decay. Comparison with evaluated data in AME-2016.

RADIOACTIVITY 195,195m,197,197m,199mPo(α)[from U(p, X), E=1.4 GeV using RILIS and high-resolution mass spectrometer at ISOLDE-CERN]; measured Eα, Iα.

doi: 10.1103/PhysRevC.96.044325
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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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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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2017ON01      Phys.Rev. C 95, 055806 (2017)

W.-J.Ong, C.Langer, F.Montes, A.Aprahamian, D.W.Bardayan, D.Bazin, B.A.Brown, J.Browne, H.Crawford, R.Cyburt, E.B.Deleeuw, C.Domingo-Pardo, A.Gade, S.George, P.Hosmer, L.Keek, A.Kontos, I.-Y.Lee, A.Lemasson, E.Lunderberg, Y.Maeda, M.Matos, Z.Meisel, S.Noji, F.M.Nunes, A.Nystrom, G.Perdikakis, J.Pereira, S.J.Quinn, F.Recchia, H.Schatz, M.Scott, K.Siegl, A.Simon, M.Smith, A.Spyrou, J.Stevens, S.R.Stroberg, D.Weisshaar, J.Wheeler, K.Wimmer, R.G.T.Zegers

Low-lying level structure of 56Cu and its implications for the rp process

NUCLEAR REACTIONS 2H(56Ni, 56Cu), E AP 75 MeV/nucleon, [secondary 56Ni beam from 9Be(58Ni, X), E=160 MeV/nucleon primary reaction using A1900 separator at NSCL-MSU facility]; measured ΔE-TOF particle identification for ions, Eγ, Iγ, γγ-, (56Cu ions)γ-coin using GRETINA array and S800 magnetic spectrograph. 56Cu; deduced levels, J, π. Comparison with mirror nucleus 56Co level scheme, and with shell-model calculations 55Ni(p, γ)56Cu, T9=0.1-10; deduced Q value, astrophysical reaction rates as function of temperature, and impact on the r-process around 56Ni.

NUCLEAR STRUCTURE 56Cu; calculated levels, resonance energies, J, π, spectroscopic factors, Γp, Γγ using shell model with the GXPF1A interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.055806
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2016ME07      Phys.Rev. C 93, 035805 (2016)

Z.Meisel, S.George, S.Ahn, D.Bazin, B.A.Brown, J.Browne, J.F.Carpino, H.Chung, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Sieja, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers

Time-of-flight mass measurements of neutron-rich chromium isotopes up to N=40 and implications for the accreted neutron star crust

ATOMIC MASSES 59,60,61,62,63,64Cr; measured mass excesses by time-of-flight (TOF) method using 9Be(82Se, X), E=140 MeV/nucleon for production of Si to Zn isotopes and A1900 fragment separator and S800 spectrograph for fragment separation and analysis at NSCL-MSU. TOF versus mass contour plot obtained for Ar (A=44-49), K (A=47-52), Ca (A=49-55), Sc (A=52-58), Ti (A=54-60), V (A=57-63), Cr (A=59-66), Mn (A=62-70) and Fe (A=64-71) isotopes. Analyzed S(2n) trends and compared to AME-2012. Comparison with state-of-the-art shell-model calculations using modified Lenzi-Nowacki-Poves-Sieja interaction in the fp shell, and with AME-2012 data. Mass of 64Cr used in accreted neutron star crust network calculations, and deduced reduction in strength depth of electron-capture heating from A=64 isobaric chain.

NUCLEAR REACTIONS 9Be(82Se, X), E=140 MeV/nucleon; measured time-of-flight, energy loss, fragment yields of 150 isotopes from Si to Zn using A1900 fragment separator and S800 spectrograph at NSCL-MSU.

doi: 10.1103/PhysRevC.93.035805
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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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2015ME01      Phys.Rev.Lett. 114, 022501 (2015)

Z.Meisel, S.George, S.Ahn, J.Browne, D.Bazin, B.A.Brown, J.F.Carpino, H.Chung, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers

Mass Measurements Demonstrate a Strong N=28 Shell Gap in Argon

ATOMIC MASSES 48,49Ar; measured time of flight; deduced masses, N=28 closed shell, problems of shell model calculations.

doi: 10.1103/PhysRevLett.114.022501
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2015ME08      Phys.Rev.Lett. 115, 162501 (2015)

Z.Meisel, S.George, S.Ahn, D.Bazin, B.A.Brown, J.Browne, J.F.Carpino, H.Chung, A.L.Cole, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers

Mass Measurement of 56Sc Reveals a Small A=56 Odd-Even Mass Staggering, Implying a Cooler Accreted Neutron Star Crust

ATOMIC MASSES 52,53,54,55,56,57Sc; measured rigidity-corrected time-of-flight distributions; deduced atomic mass excesses. Comparison with AME 2012, theoretical models.

doi: 10.1103/PhysRevLett.115.162501
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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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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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2014DE41      Phys.Lett. B 738, 453 (2014)

M.Del Santo, Z.Meisel, D.Bazin, A.Becerril, B.A.Brown, H.Crawford, R.Cyburt, S.George, G.F.Grinyer, G.Lorusso, P.F.Mantica, F.Montes, J.Pereira, H.Schatz, K.Smith, M.Wiescher

β-delayed proton emission of 69Kr and the 68Se rp-process waiting point

RADIOACTIVITY 69Kr(β+p) [from Be(78Kr, X)69Kr, E not given]; measured reaction products, Ep, Ip, Eβ, Iβ, Eγ, Iγ. 69Br; deduced T1/2, proton separation energy, proton emission decay scheme, γ-ray energies. Comparison with shell model calculations.

doi: 10.1016/j.physletb.2014.10.023
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2014LA16      Phys.Rev.Lett. 113, 032502 (2014)

C.Langer, F.Montes, A.Aprahamian, D.W.Bardayan, D.Bazin, B.A.Brown, J.Browne, H.Crawford, R.H.Cyburt, C.Domingo-Pardo, A.Gade, S.George, P.Hosmer, L.Keek, A.Kontos, I-Y.Lee, A.Lemasson, E.Lunderberg, Y.Maeda, M.Matos, Z.Meisel, S.Noji, F.M.Nunes, A.Nystrom, G.Perdikakis, J.Pereira, S.J.Quinn, F.Recchia, H.Schatz, M.Scott, K.Siegl, A.Simon, M.Smith, A.Spyrou, J.Stevens, S.R.Stroberg, D.Weisshaar, J.Wheeler, K.Wimmer, R.G.T.Zegers

Determining the rp-Process Flow through 56Ni: Resonances in 57Cu(p, γ)58Zn identified with GRETINA

NUCLEAR REACTIONS 2H(57Cu, n), E=75 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced resonance energies, J, π, reaction rates. Shell model calculations, GXPF1A interaction.

doi: 10.1103/PhysRevLett.113.032502
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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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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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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,63Mn; 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,63,64,65,66Mn, 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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2011ES06      Phys.Rev.Lett. 107, 172503 (2011)

A.Estrade, M.Matos, H.Schatz, A.M.Amthor, D.Bazin, M.Beard, A.Becerril, E.F.Brown, R.Cyburt, T.Elliot, A.Gade, D.Galaviz, S.George, S.S.Gupta, W.R.Hix, R.Lau, G.Lorusso, P.Moller, J.Pereira, M.Portillo, A.M.Rogers, D.Shapira, E.Smith, A.Stolz, M.Wallace, M.Wiescher

Time-of-Flight Mass Measurements for Nuclear Processes in Neutron Star Crusts

ATOMIC MASSES 53,54,55Sc, 57Ti, 60,61V, 63Cr, 65,66Mn, 67,68Fe, 68,69,70,71Co, 74Ni; measured time of flight; deduced masses. Stellar nucleosynthesis implications.

doi: 10.1103/PhysRevLett.107.172503
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2011HE10      Eur.Phys.J. A 47, 75 (2011)

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

New mass data for the rp-process above Z = 32

ATOMIC MASSES 70,71,72,73,74Se, 72,73,74,75Br; measured mass excess from Zr(p, X), E=1.4 GeV using thick target with ISOLTRAP.

doi: 10.1140/epja/i2011-11075-6
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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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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, 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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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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2009KE07      Eur.Phys.J. A 42, 311 (2009)

J.Ketelaer, K.Blaum, M.Block, K.Eberhardt, M.Eibach, R.Ferrer, S.George, F.Herfurth, J.Ketter, Sz.Nagy, J.Repp, L.Schweikhard, C.Smorra, S.Sturm, S.Ulmer

Recent developments in ion detection techniques for Penning trap mass spectrometry at TRIGA-TRAP

doi: 10.1140/epja/i2008-10711-6
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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 220,223,224,225,226,227,228,229Rn; 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 136,137,138,139,140,141,142,143,144,145,146Xe; 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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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 71,72,73,74,75,76,77,78,79,80,81Zn; 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, 134Sn

ATOMIC MASSES 127,131,132,133,134Sn; 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 17,18,19,20,21,22Ne; 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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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 35,36,37,38,43,44,45,46K; 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 84,86,87,88,89,90,91,92,93,94,95Kr; 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 126,129,130,131,136Xe; 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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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 T1/2.

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 229,230,231,232Ra, 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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1987BA43      Phys.Rev. A36, 655 (1987)

G.Basavaraju, P.P.Kane, S.M.George

Compton Scattering of 279.2-keV γ Rays by K-Shell Electrons

ATOMIC PHYSICS Sn, 197Au(γ, γ), E=279.2 keV; measured γγ-coin; deduced K-shell electron produced σ(Eγ, θγ).

doi: 10.1103/PhysRevA.36.655
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1970GE10      J.Opt.Soc.Amer. 60, 869 (1970)

S.George, R.A.Klingberg

Interferometric Measurements of the Hyperfine Structure in Bismuth

NUCLEAR MOMENTS 209Bi; measured a, B. Fabry-Perot interferometer.

doi: 10.1364/JOSA.60.000869
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Note: The following list of authors and aliases matches the search parameter S.George: , S.M.GEORGE