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Search: Author = R.B.Cakirli

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

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

Further Evidence for Shape Coexistence in 79Znm near Doubly Magic 78Ni

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

doi: 10.1103/PhysRevLett.131.222503
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2023WA10      Phys.Rev.Lett. 130, 192501 (2023)

M.Wang, Y.H.Zhang, X.Zhou, X.H.Zhou, H.S.Xu, M.L.Liu, J.G.Li, Y.F.Niu, W.J.Huang, Q.Yuan, S.Zhang, F.R.Xu, Y.A.Litvinov, K.Blaum, Z.Meisel, R.F.Casten, R.B.Cakirli, R.J.Chen, H.Y.Deng, C.Y.Fu, W.W.Ge, H.F.Li, T.Liao, S.A.Litvinov, P.Shuai, J.Y.Shi, Y.N.Song, M.Z.Sun, Q.Wang, Y.M.Xing, X.Xu, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, M.Zhang

Mass Measurement of Upper fp-Shell N = Z - 2 and N = Z - 1 Nuclei and the Importance of Three-Nucleon Force along the N = Z Line

ATOMIC MASSES 58Zn, 60Ga, 62Ge, 64As, 66Se, 70Kr, 61Ga, 63Ge, 65As, 67Se, 71Kr, 75Sr; measured time-of-flight (TOF); deduced mass excess (ME). A novel method of isochronous mass spectrometry, the Heavy Ion Research Facility in Lanzhou (HIRFL).

doi: 10.1103/PhysRevLett.130.192501
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2022IV01      Phys.Rev. C 105, 034337 (2022)

D.Ivanova, S.Lalkovski, C.Costache, S.Kisyov, C.Mihai, N.Marginean, P.Petkov, L.Atanasova, D.Bucurescu, R.B.Cakirli, M.P.Carpenter, R.F.Casten, Gh.Cata-Danil, I.Cata-Danil, D.Deleanu, D.Filipescu, N.Florea, I.Gheorghe, D.Ghita, T.Glodariu, F.G.Kondev, R.Lica, R.Marginean, A.Negret, S.Pascu, T.Sava, E.A.Stefanova, L.Stroe, G.Suliman, R.Suvaila, O.Yordanov, N.V.Zamfir

Structure of the low-lying states in 99, 101, 103, 105Pd

NUCLEAR REACTIONS 90,92,94Zr(12C, 3n), E=45 MeV; 96Zr(13C, 4n), E=55 MeV; measured Eγ, Iγ, γγ-coin. 94Zr(12C, 3n), E=56 MeV; measured Eγ, Iγ, γγ-coin with plunger device. 99,101,103,105Pd; deduced levels, J, π, B(M1), B(E2), T1/2 of excited states, multipolarity, δ, high-spin states, bands structure. Half-lives were determined by centroid shift method, deconvolution method and differential decay curve method (on case of 103Pd experiment with plunger). Comparison with rigid triaxial rotor plus particle model (RTRPM) calculations. RoSphere array comprised of 8 HPGe and 11 LaBr3:Ce detectors at IFIN-HH (Romania).

doi: 10.1103/PhysRevC.105.034337
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2021AL18      Phys.Lett. B 819, 136438 (2021)

A.Algora, E.Ganioglu, P.Sarriguren, V.Guadilla, L.M.Fraile, E.Nacher, B.Rubio, J.L.Tain, J.Agramunt, W.Gelletly, J.A.Briz, R.B.Cakirli, M.Fallot, D.Jordan, Z.Halasz, I.Kuti, A.Montaner, A.Onillon, S.E.A.Orrigo, A.Perez Cerdan, S.Rice, V.Vedia, E.Valencia

Total absorption gamma-ray spectroscopy study of the β-decay of 186Hg

RADIOACTIVITY 186Hg(EC) [from Pb(p, X), E=1.4 GeV]; measured decay products, Eγ, Iγ, X-rays; deduced γ-ray energies, J, π, Gamow-Teller strength distribution. Comparison with QRPA calculations.

doi: 10.1016/j.physletb.2021.136438
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2021CO15      Phys.Rev. C 104, 054608 (2021)

A.Couture, R.F.Casten, R.B.Cakirli

Significantly improved estimates of neutron capture cross sections relevant to the r process

NUCLEAR REACTIONS 149,151,152,153,154,155Nd, 151,153,154,155,156,157,158Pm, 151,153,155,156,157,158,159Sm, 157,158,159,160,161,162Eu, 159,161Gd, 161Tb, 158,165,166,167Dy, 167,168,169,170Ho, 169,171Er, 171,172,173,174Tm, 175,177Yb, 177,178,179,180,181,182Lu, 172,175,181,183,184,185Hf, 179,181,182,183,184,185,186Ta, 176,178,181,187,188,189W(n, γ), E=30 keV; 116,118,119,121,123,125,127,129,131,132Te, 123,125,126,127,128,129,130,131,132,133I, 122,125,127,129,131,133Xe, 127,129,131,132,133,134,135Cs, 126,128,129,131,133,135Ba, 143,145Ce, 143,144,145,146Pr, 145,146,147Nd, 188,190,191,192,193,194,195,197,199,201,203Hg(n, γ), E=30 keV; 180,182,185,187,189,191,193,194,195Os, 189,191,193,194,195,196,197,198Ir, 186,188,191,192,193,194,195,197,199,200,201Pt(n, γ), E=30 keV; 224,225,226,227Rn, 222,223,224,225,226,227,228,229,230,231,232,233Ra, 229,231,233,234Ac, 224,226,228,230,231,233,234,235Th, 235Pa, 232,235,237,239U, 239Np, 236,238,241,243,245Pu, 242,245,247,248,249Cm, 249Bk, 246,248,250,251,252,253Cf, 253Es, 252,254,255Fm(n, γ), E=30 keV; predicted Maxwellian-averaged cross section (σMACS) from fitting of correlation between S(2n) and neutron capture cross sections at kT=5-100 keV neutron energies, with S(2n) taken from AME2016. Relevance to r process nucleosynthesis and elemental abundances.

COMPILATION 120,122,124,126,128,130Te, 124,126,128,130,132,134Xe, 130,132,134,136Ba, 148,150Nd, 150,152,154Sm, 152,154,156,158,160Gd, 156,160,162,164Dy, 162,164,166,168,170Er, 168,170,172,174,176Yb, 174,176,178,180,182Hf, 180,182,184,186W(n, γ), E=5-100 keV; 155,157Gd, 161,163Dy, 167Er, 171,173Yb, 177,179Hf, 183,185W(n, γ), E=5-100 keV; 151,153,155Eu, 159Tb, 163,165Ho, 169Tm, 175Lu, 181Ta(n, γ), E=5-100 keV; 184,186,188,190,192Os, 190,196,198Pt, 142Ce, 144Nd, 196,198,200,202,204Hg(n, γ), E=5-100 keV; 232Th, 234,236,238U, 240,242Pu, 244,246Cm, 127,129I, 133,135Cs, 154Eu, 176Lu(n, γ), E=30 keV; compiled S(2n) from AME2016, and Maxwellian-averaged cross section (σMACS) from KADoNiS database, NNDC webpage (www.nndc.bnl.gov/astro/), and 2011Ch57: Nucl. Data Sheets 112, 2887.

doi: 10.1103/PhysRevC.104.054608
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2021OR01      Phys.Rev. C 103, 014324 (2021)

S.E.A.Orrigo, B.Rubio, W.Gelletly, P.Aguilera, A.Algora, A.I.Morales, J.Agramunt, D.S.Ahn, P.Ascher, B.Blank, C.Borcea, A.Boso, R.B.Cakirli, J.Chiba, G.de Angelis, G.de France, F.Diel, P.Doornenbal, Y.Fujita, N.Fukuda, E.Ganioglu, M.Gerbaux, J.Giovinazzo, S.Go, T.Goigoux, S.Grevy, V.Guadilla, N.Inabe, G.G.Kiss, T.Kubo, S.Kubono, T.Kurtukian-Nieto, D.Lubos, C.Magron, F.Molina, A.Montaner-Piza, D.Napoli, D.Nishimura, S.Nishimura, H.Oikawa, V.H.Phong, H.Sakurai, Y.Shimizu, C.Sidong, P.-A.Soderstrom, T.Sumikama, H.Suzuki, H.Takeda, Y.Takei, M.Tanaka, J.Wu, S.Yagi

β decay of the very neutron-deficient 60Ge and 62Ge nuclei

RADIOACTIVITY 59Zn, 60Ga, 60,62Ge(EC), (β+); 62Ge(β+p)[60,62Ge activities from 9Be(78Kr, X), E=345 MeV/nucleon at RIBF-RIKEN]; measured Eγ, Iγ, Ep, Ip, β+γ-, β+pγ- and γγ-coin, γ(implants)- and p(implants)-correlations, half-lives of decays of 60Ga, 60,62Ge using the WAS3ABi and EURICA arrays. 60Ge; deduced β+-delayed proton branching ratio. 60,62Ga, 59,60Zn, 59Cu; deduced levels, J, π, β feedings, Fermi and B(F) and Gamow-Teller B(GT) transition strengths, mass excesses of 60,62Ge, and 60Ga by analysis of IMME for A=60 nuclei. Comparison with previous experimental data.

NUCLEAR REACTIONS 9Be(78Kr, X), E=345 MeV/nucleon; measured reaction products, Z versus A/Q identification plot for nuclei of Z=28-36 and A/Q=1.85-1.95, with fragments separated using the BigRIPS separator and ZeroDegree spectrometer at RIBF-RIKEN facility, with main emphasis on the production of 60,62Ge.

doi: 10.1103/PhysRevC.103.014324
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2020CA27      Phys.Rev. C 102, 054310 (2020)

R.F.Casten, R.B.Cakirli, D.Bonatsos, K.Blaum

Simple new signature of structure in deformed nuclei: Distinguishing the nature of axial asymmetry

NUCLEAR STRUCTURE 154,156,158,160,162Gd, 158,160,162,164,166Dy, 162,164,168,170,172Er, 164,166,168,170,172,174,176Yb, 168,170,172,174,176,178,180Hf, 170,172,174,176,178,180,182,184,186,188W, 182,184,186,188,190,192Os, 186,188,190,192,194,196Pt; analyzed ratios of two γ-band to ground-band experimental transition energies as a function of spin, and ratios of the inertial parameters between the γ bands and the ground bands; deduced a new and robust signature of structure of well-deformed and transitional even-even nuclei.

doi: 10.1103/PhysRevC.102.054310
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2020GI02      Acta Phys.Pol. B51, 577 (2020)

J.Giovinazzo, T.Goigoux, B.Blank, P.Ascher, M.Gerbaux, S.Grevy, T.Kurtukian Nieto, C.Magron, P.Doornenbal, N.Fukuda, N.Inabe, G.G.Kiss, T.Kubo, S.Kubono, S.Nishimura, H.Sakurai, Y.Shimizu, C.Sidong, P.-A.Soderstrom, T.Sumikama, H.Suzuki, H.Takeda, P.Vi, J.Wu, D.S.Ahn, J.Agramunt, A.Algora, V.Guadilla, A.Montaner-Piza, A.I.Morales, S.E.A.Orrigo, B.Rubio, Y.Fujita, M.Tanaka, W.Gelletly, P.Aguilera, F.Molina, F.Diel, D.Lubos, G.De Angelis, D.Napoli, C.Borcea, A.Boso, R.B.Cakirli, E.Ganioglu, J.Chiba, D.Nishimura, H.Oikawa, Y.Takei, S.Yagi, K.Wimmer, G.De France, S.Go, B.A.Brown

Two-proton radioactivity: The interesting case of 67Kr and Further Studies

RADIOACTIVITY 67Kr(2p), (β+), 57Zn, 59,61Ge, 63,65Se, 68,69Kr(EC), (β+), (β+p), 55,56Cu, 60Ga, 63Ge, 64,65As, 67Kr(EC), (β+)[from 9Be(78Kr, X), E=350 MeV/nucleon, followed by separation of fragments using BigRIPS and Zero Degree Spectrometer at RIBF-RIKEN]; measured E(p), I(p), Eγ, half-lives of decays of isotopes from time distribution of (fragment)(decay events) correlations using EURICA-WAS3ABi setup at RIKEN; deduced %2p for the decay of 67Kr, and %β+p for 59,61Ge, 63Se, 68,69Kr. Comparison with previous experimental results.

doi: 10.5506/APhysPolB.51.577
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2020KO03      Phys.Rev. C 101, 014303 (2020)

P.Koseoglou, V.Werner, N.Pietralla, S.Ilieva, T.Niksic, D.Vretenar, P.Alexa, M.Thurauf, C.Bernards, A.Blanc, A.M.Bruce, R.B.Cakirli, N.Cooper, L.M.Fraile, G.de France, M.Jentschel, J.Jolie, U.Koster, W.Korten, T.Kroll, S.Lalkovski, H.Mach, N.Marginean, P.Mutti, Z.Patel, V.Paziy, Zs.Podolyak, P.H.Regan, J.-M.Regis, O.J.Roberts, N.Saed-Samii, G.S.Simpson, T.Soldner, C.A.Ur, W.Urban, D.Wilmsen, E.Wilson

Low-Z boundary of the N=88-0 shape phase transition: 148Ce near the critical point

NUCLEAR REACTIONS 235U(n, Fγ), E=cold neutrons from PF1B, ILL-Grenoble facility; measured Eγ, γγ-coin, half-lives of the first 2+ and 4+ levels in 148Ce by fast-timing technique using the EXILL-FATIMA array of eight EXOGAM clovers and 16 LaBr3(Ce) scintillators. 148Ce; deduced levels, B(E2) for the first 2+ 4+ states. Comparison with predictions of vibrator, rigid rotor, X(5) and X(5)-β8 models, and with previous experimental results. Systematics of E(first 4+)/E(first 2+) and energies of the yrast states for N=90 isotones 146Ba, 148Ce, 150Nd, 152Sm, 154Gd, 156Dy.

NUCLEAR STRUCTURE 144,146,148Ce, 146,148,150Nd, 148,150,152,154Sm; calculated quantum shape phase transition (QSPT) lines in the IBM symmetry triangle using IBM-1 model. 148Ce; calculated self-consistent triaxial quadrupole constrained energy surfaces and probability distributions in in the β-γ plane using Axial Skyrme-Hartree-Fock-Bogoliubov model.

doi: 10.1103/PhysRevC.101.014303
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2020KU19      Nucl.Phys. A1002, 121990 (2020)

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

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

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

doi: 10.1016/j.nuclphysa.2020.121990
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2019AS04      Phys.Rev. C 100, 014304 (2019)

P.Ascher, N.Althubiti, D.Atanasov, K.Blaum, R.B.Cakirli, S.Grevy, F.Herfurth, S.Kreim, D.Lunney, V.Manea, D.Neidherr, M.Rosenbusch, L.Schweikhard, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber

Mass measurements of neutron-rich isotopes near N=20 by in-trap decay with the ISOLTRAP spectrometer

ATOMIC MASSES 33,34Mg, 34Al, 34mAl, 34Si; measured cyclotron frequency ratios, and mass excesses using the ISOLTRAP Penning-trap spectrometer at ISOLDE-CERN. Combined mass excess for 34Al and 34mAl, as the two could not be separated. Comparison with AME-2016 evaluation. The 33,34Mg and 34Al isotopes were produced in UCx(p, X), E=1.4 GeV reaction, followed by laser-ionization by RILIS at ISOLDE-CERN. 34mAl and 34Si were obtained from the decay of 34Mg.

doi: 10.1103/PhysRevC.100.014304
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2019GO34      Acta Phys.Pol. B50, 399 (2019)

T.Goigoux, P.Ascher, B.Blank, M.Gerbaux, J.Giovinazzo, S.Grevy, T.Kurtukian Nieto, C.Magron, D.S.Ahn, P.Doornenbal, N.Fukuda, N.Inabe, G.Kiss, T.Kubo, S.Kubono, S.Nishimura, H.Sakurai, Y.Shimizu, C.Sidong, P.-A.Soderstrom, T.Sumikama, H.Suzuki, H.Takeda, P.Vi, J.Wu, Y.Fujita, M.Tanaka, J.Agramunt, A.Algora, V.Guadilla, A.Montaner-Piza, A.I.Morales, S.E.A.Orrigo, B.Rubio, W.Gelletly, P.Aguilera, F.Molina, F.Diel, D.Lubos, G.de Angelis, D.Napoli, C.Borcea, A.Boso, R.B.Cakirli, E.Ganioglu, J.Chiba, D.Nishimura, H.Oikawa, Y.Takei, S.Yagi, K.Wimmer, G.De France, S.Go, B.A.Brown

67Kr Two-proton Radioactivity: Results and Theoretical Interpretations

RADIOACTIVITY 67Kr(2p)[from 9Be(78Kr, X), E=350 MeV/nucleon, followed by separation of fragments using BigRIPS and Zero Degree Spectrometer at RIBF-RIKEN]; measured E(p), I(p), half-life of decay of 67Kr from time distribution of (fragment)(decay events) correlations using EURICA-WAS3ABi setup at RIKEN. 67Kr; deduced %2p, Nilsson configurations. Comparison with theoretical calculations. 59Ge, 63Se, 68Kr; isotopes observed in A/Q versus Z identification plot.

doi: 10.5506/aphyspolb.50.399
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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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2019OZ03      Phys.Lett. B 797, 134800 (2019)

F.C.Ozturk, B.Akkus, D.Atanasov, H.Beyer, F.Bosch, D.Boutin, C.Brandau, P.Buhler, R.B.Cakirli, R.J.Chen, W.D.Chen, X.C.Chen, I.Dillmann, C.Dimopoulou, W.Enders, H.G.Essel, T.Faestermann, O.Forstner, B.S.Gao, H.Geissel, R.Gernhauser, R.E.Grisenti, A.Gumberidze, S.Hagmann, T.Heftrich, M.Heil, M.O.Herdrich, P.-M.Hillenbrand, T.Izumikawa, P.Kienle, C.Klaushofer, C.Kleffner, C.Kozhuharov, R.K.Knobel, O.Kovalenko, S.Kreim, T.Kuhl, C.Lederer-Woods, M.Lestinsky, S.A.Litvinov, Yu.A.Litvinov, Z.Liu, X.W.Ma, L.Maier, B.Mei, H.Miura, I.Mukha, A.Najafi, D.Nagae, T.Nishimura, C.Nociforo, F.Nolden, T.Ohtsubo, Y.Oktem, S.Omika, A.Ozawa, N.Petridis, J.Piotrowski, R.Reifarth, J.Rossbach, R.Sanchez, M.S.Sanjari, C.Scheidenberger, R.S.Sidhu, H.Simon, U.Spillmann, M.Steck, Th.Stohlker, B.H.Sun, L.A.Susam, F.Suzaki, T.Suzuki, S.Yu.Torilov, C.Trageser, M.Trassinelli, S.Trotsenko, X.L.Tu, P.M.Walker, M.Wang, G.Weber, H.Weick, N.Winckler, D.F.A.Winters, P.J.Woods, T.Yamaguchi, X.D.Xu, X.L.Yan, J.C.Yang, Y.J.Yuan, Y.H.Zhang, X.H.Zhou

New test of modulated electron capture decay of hydrogen-like 142Pm ions: Precision measurement of purely exponential decay

RADIOACTIVITY 142Pm(EC); measured decay products; deduced T1/2.

doi: 10.1016/j.physletb.2019.134800
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2019RU07      Proc.XLII Symposium on Nuclear Physics 2019 (Cocoyoc2019), 7-10 January 2019, Cocoyoc, Mexico, p.012018 (2019), J.Phys.:Conf. Ser. 1308 (2019)

B.Rubio, P.Aguilera, F.Molina, J.Agramunt, A.Algora, V.Guadilla, A.Montaner-Piza, A.I.Morales, S.E.A.Orrigo, W.Gelletly, B.Blank, P.Asher, M.Gerbaux, J.Giovinazzo, S.Grevy, T.Kurtukian, C.Magron, J.Chiba, D.Nishimura, H.Oikawa, Y.Takei, S.Yang, D.S.Ahn, P.Doornenbal, N.Fukuda, N.Inabe, G.Kiss, T.Kubo, S.Kubono, S.Nishimura, Y.Shimizu, C.Sidong, P.-A.Soderstrom, T.Sumikama, H.Suzuki, H.Takeda, P.Vi, J.Wu, Y.Fujita, M.Tanaka, F.Diel, D.Lubos, G.de Angelis, D.Napoli, C.Borcea, A.Boso, R.B.Cakirli, E.Ganioglu, G.de France, S.Go

Beta decay of the Tz=-2 nucleus 64Se and its descendants

RADIOACTIVITY 64Se, 64As(β+), (EC), (β+p)[from 9Be(78Kr, X), E=345 MeV, followed by separation of fragments using BigRIPS separator and implantation in double-sided Si-strip detectors (DSSSDs) at RIBF-RIKEN facility]; 63Ge(β+), (EC)[from 74Se β+p decay]; measured reaction products, particle identification plot, Eγ, Iγ, (implants)γ-coin, E(p), I(p) from β+-delayed proton decays, T1/2 of decays of 64Se, 64As, 63Ge. 64As, 63,64Ge, 63Ga; deduced levels, J, π, 0+ IAS of 64As, mirror states in 64As and 64Ga, and in 63Ge and 63Ga.

doi: 10.1088/1742-6596/1308/1/012018
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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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2017BO11      Phys.Rev. C 95, 064325 (2017)

D.Bonatsos, I.E.Assimakis, N.Minkov, A.Martinou, R.B.Cakirli, R.F.Casten, K.Blaum

Proxy-SU(3) symmetry in heavy deformed nuclei

doi: 10.1103/PhysRevC.95.064325
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2017BO12      Phys.Rev. C 95, 064326 (2017)

D.Bonatsos, I.E.Assimakis, N.Minkov, A.Martinou, S.Sarantopoulou, R.B.Cakirli, R.F.Casten, K.Blaum

Analytic predictions for nuclear shapes, prolate dominance, and the prolate-oblate shape transition in the proxy-SU(3) model

NUCLEAR STRUCTURE 112,114,116,118,120,122,124,126,128,130,144,146,148,150,152,154,156,158,160,162,164,166,168,170,172,174,176Ba, 114,116,118,120,122,124,126,128,130,132,134,146,148,150,152,154,156,158,160,162,164,166,168,170,172,174,176,178Ce, 116,118,120,122,124,126,128,130,132,134,136,148,150,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180Nd, 118,120,122,124,126,128,130,132,134,136,138,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,182Sm, 120,122,124,126,128,130,132,134,136,138,140,154,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184Gd, 122,124,126,128,130,132,134,136,138,140,142,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186Dy, 124,126,128,130,132,134,136,138,140,142,146,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188Er, 126,128,130,132,134,136,138,140,142,146,148,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190Yb, 128,130,132,134,136,138,140,142,146,148,150,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192Hf, 130,132,134,136,138,140,142,146,148,150,152,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194W, 132,134,136,138,140,142,146,148,150,152,154,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196Os, 134,136,138,140,142,146,148,150,152,154,156,178,180,182,184,186,188,190,192,194,196,198Pt; calculated β and γ deformations using a new approximate analytic parameter-free proxy-SU(3) model. Comparison with empirical results.

doi: 10.1103/PhysRevC.95.064326
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2017CO16      Phys.Rev. C 96, 061601 (2017)

A.Couture, R.F.Casten, R.B.Cakirli

Simple, empirical approach to predict neutron capture cross sections from nuclear masses

NUCLEAR REACTIONS 156,158,160,162Nd, 158,160,162,164,166,168Sm, 168Gd, 154,156Dy, 174,176,178W(n, γ), kT=30 keV; deduced Maxwellian capture cross sections from empirical fits of experimental neutron capture cross sections to S(2n) values. Similar analysis carried out for other nuclei such as N>82 Ce, Nd, Hg, Os, Pt, Z=52-56 and odd-N, Z=60-74 nuclei. Comparison with predictions from TALYS and NONSMOKER models. Proposed a simple empirical approach to correlate neutron capture cross sections and nuclear masses. Relevance to astrophysical s- and r-processes, modeling of nuclear reactor designs, and nuclear forensics applications.

doi: 10.1103/PhysRevC.96.061601
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2017KU12      Eur.Phys.J. A 53, 134 (2017)

L.Kucuk, S.E.A.Orrigo, A.Montaner-Piza, B.Rubio, Y.Fujita, W.Gelletly, B.Blank, Y.Oktem, T.Adachi, A.Algora, P.Ascher, R.B.Cakirli, G.de France, H.Fujita, E.Ganioglu, J.Giovinazzo, S.Grevy, F.M.Marques, F.Molina, F.de Oliveira Santos, L.Perrot, R.Raabe, P.C.Srivastava, G.Susoy, A.Tamii, J.C.Thomas

Half-life determination of Tz = -1 and Tz = -1/2 proton-rich nuclei and the β decay of 58Zn

NUCLEAR REACTIONS Ni(64Zn, x), E=79 MeV/nucleon; measured fragments of Tz=-1 and =-1/2 (together 16 isotopes), subsequent charged particle decays using two DSSSD and four Ge detectors, β-delayed Eγ, Iγ. 58Zn[Tz=-1]; deduced decay scheme, absolute Fermi and Gamow-Teller β-transition strength B(F), B(GT), T1/2. 50Fe, 52Co, 56Cu, 60Ga, 62Ge[Tz=-1]; deduced T1/2. 47Cr, 49Mn, 51Fe, 55Ni, 57Cu, 59Zn, 61Ga, 63Ge[Tz=-1/2]; deduced T1/2. Here, T1/2 deduced using correlation time and the results compared with published ones.

doi: 10.1140/epja/i2017-12327-1
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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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2016BL05      Phys.Rev. C 93, 061301 (2016)

B.Blank, T.Goigoux, P.Ascher, M.Gerbaux, J.Giovinazzo, S.Grevy, T.Kurtukian Nieto, C.Magron, J.Agramunt, A.Algora, V.Guadilla, A.Montaner-Piza, A.I.Morales, S.E.A.Orrigo, B.Rubio, D.S.Ahn, P.Doornenbal, N.Fukuda, N.Inabe, G.Kiss, T.Kubo, S.Kubono, S.Nishimura, V.H.Phong, H.Sakurai, Y.Shimizu, P.-A.Soderstrom, T.Sumikama, H.Suzuki, H.Takeda, J.Wu, Y.Fujita, M.Tanaka, W.Gelletly, P.Aguilera, F.Molina, F.Diel, D.Lubos, G.de Angelis, D.Napoli, C.Borcea, A.Boso, R.B.Cakirli, E.Ganioglu, J.Chiba, D.Nishimura, H.Oikawa, Y.Takei, S.Yagi, K.Wimmer, G.de France, S.Go

New neutron-deficient isotopes from 78Kr fragmentation

NUCLEAR REACTIONS 9Be(78Kr, X)39Ti/40Ti/43Cr/44Cr/46Mn/47Fe/48Fe/51Ni/59Ge/60Ge/63Se/64Se/67Kr/68Kr, E=345 MeV/nucleon; measured fragmentation residues, production σ using BigRIPS separator, zero-degree spectrometer, WAS3ABi setup for implantation, and EURICA array for γ detection at RIBF-RIKEN facility. Comparison of experimental cross sections with predictions from the EPAX3 parameterization. 63Se, 67Kr, 68Kr; newly identified nuclides. 59Ge, 63Se, 67Kr; candidates for 2p emitters. 58Ge, 62Se, 66Kr; deduced upper limit of cross sections, half-lives, search for these nuclides proved unsuccessful, consistent with unbound nature of these nuclei.

doi: 10.1103/PhysRevC.93.061301
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2016CA09      Phys.Scr. 91, 033004 (2016)

R.F.Casten, R.B.Cakirli

The evolution of collectivity in nuclei and the proton-neutron interaction

NUCLEAR STRUCTURE N<150; analyzed available data on energies and B(E2) values; deduced systematics.

doi: 10.1088/0031-8949/91/3/033004
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2016CA41      Phys.Rev. C 94, 061303 (2016)

R.F.Casten, J.Jolie, R.B.Cakirli, A.Couture

Finite valence nucleon number and rotation-vibration interactions

NUCLEAR STRUCTURE 168Er; calculated relative interband B(E2) values with bandmixing formalism and Partial Dynamical Symmetry SU(3) model for deformed nuclei; derived relation between the two approaches. Linkage of rotation-vibration coupling to valence nucleon number. General formalism in the paper with an example of 168Er.

doi: 10.1103/PhysRevC.94.061303
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2016GO26      Phys.Rev.Lett. 117, 162501 (2016)

T.Goigoux, P.Ascher, B.Blank, M.Gerbaux, J.Giovinazzo, S.Grevy, T.Kurtukian Nieto, C.Magron, P.Doornenbal, G.G.Kiss, S.Nishimura, P.-A.Soderstrom, V.H.Phong, J.Wu, D.S.Ahn, N.Fukuda, N.Inabe, T.Kubo, S.Kubono, H.Sakurai, Y.Shimizu, T.Sumikama, H.Suzuki, H.Takeda, J.Agramunt, A.Algora, V.Guadilla, A.Montaner-Piza, A.I.Morales, S.E.A.Orrigo, B.Rubio, Y.Fujita, M.Tanaka, W.Gelletly, P.Aguilera, F.Molina, F.Diel, D.Lubos, G.de Angelis, D.Napoli, C.Borcea, A.Boso, R.B.Cakirli, E.Ganioglu, J.Chiba, D.Nishimura, H.Oikawa, Y.Takei, S.Yagi, K.Wimmer, G.de France, S.Go, B.A.Brown

Two-Proton Radioactivity of 67Kr

RADIOACTIVITY 67Kr(2p), 59Ge, 63Se(β+) [from Be(78Kr, X), E=345 MeV/nucleon]; measured decay products, Eβ, Iβ; deduced decay energy, branching ratio, T1/2. Comparison with available data.

doi: 10.1103/PhysRevLett.117.162501
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2016OR03      Phys.Rev. C 93, 044336 (2016)

S.E.A.Orrigo, B.Rubio, Y.Fujita, W.Gelletly, J.Agramunt, A.Algora, P.Ascher, B.Bilgier, B.Blank, L.Caceres, R.B.Cakirli, E.Ganioglu, M.Gerbaux, J.Giovinazzo, S.Grevy, O.Kamalou, H.C.Kozer, L.Kucuk, T.Kurtukian-Nieto, F.Molina, L.Popescu, A.M.Rogers, G.Susoy, C.Stodel, T.Suzuki, A.Tamii, J.C.Thomas

β decay of the exotic Tz = - 2 nuclei 48Fe, 52Ni, and 56Zn

RADIOACTIVITY 48Fe, 52Ni, 56Zn(EC), (β+), (β+p)[from Ni(58Ni, X), E=74.5 MeV/nucleon using LISE3 separator at GANIL]; measured decay products, Eγ, Iγ, Ep, Ip, pγ-coin, half-life of decays of 48Fe, 52Ni, 56Zn from time correlations between protons and implants using DSSSDs and four EXOGAM Ge clovers; deduced total proton branching ratios. 47Cr, 48Mn, 51Fe, 52Co, 55Ni, 56Cu; deduced energy levels, J, π, isospin (T), T=2 IAS, beta and proton branching ratios, Fermi B(F) and Gamow Teller B(GT) transition strengths using comparison with mirror states, mass excesses for T=2 multiplet by isobaric mass multiplet equation (IMME). Comparison with previous available experimental data, and mass evaluations.

NUCLEAR REACTIONS Ni(58Ni, X)56Zn/57Zn/55Cu/56Cu/52Ni/53Ni/54Ni/55Ni/50Co/51Co/52Co/53Co/48Fe/49Fe/50Fe/51Fe/47Mn/48Mn/49Mn/45Cr/46Cr/47Cr/48Cr/44V/45V/46V, E=74.5 MeV/nucleon; measured ΔE versus TOF isotopic identification plot for Tz=-2, -3/2, -1 and -1/2 nuclei using LISE3 separator at GANIL.

doi: 10.1103/PhysRevC.93.044336
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2016OR08      Phys.Rev. C 94, 044315 (2016)

S.E.A.Orrigo, B.Rubio, W.Gelletly, B.Blank, Y.Fujita, J.Giovinazzo, J.Agramunt, A.Algora, P.Ascher, B.Bilgier, L.Caceres, R.B.Cakirli, G.de France, E.Ganioglu, M.Gerbaux, S.Grevy, O.Kamalou, H.C.Kozer, L.Kucuk, T.Kurtukian-Nieto, F.Molina, L.Popescu, A.M.Rogers, G.Susoy, C.Stodel, T.Suzuki, A.Tamii, J.C.Thomas

Observation of the 2+ isomer in 52Co

RADIOACTIVITY 52Ni, 52mCo, 52Co(EC), (β+)[from Ni(58Ni, X), E=74.5 MeV/nucleon using LISE3 separator at GANIL]; measured yields of reaction products with Tz=-1/2, -1, -3/2 and -2 by ΔE-E and TOF techniques, β particle and protons, Eγ, Iγ, half-lives of the ground state and isomer of 52Co from (fragment)γ-correlated decay curves. 52Co, 52Fe; deduced levels, J, π, IAS in 52Fe, β feedings, Fermi and Gamow-Teller transition strengths B(F) and B(GT). Relevance of 52Co nucleus for the rp-process.

doi: 10.1103/PhysRevC.94.044315
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2016WE01      Phys.Rev. C 93, 034323 (2016)

V.Werner, N.Cooper, J.-M.Regis, M.Rudigier, E.Williams, J.Jolie, R.B.Cakirli, R.F.Casten, T.Ahn, V.Anagnostatou, Z.Berant, M.Bonett-Matiz, M.Elvers, A.Heinz, G.Ilie, D.Radeck, D.Savran, M.K.Smith

Evolution of collectivity near mid-shell from excited-state lifetime measurements in rare earth nuclei

RADIOACTIVITY 168Ta(EC)[from 159Tb(16O, 7n), E=130 MeV]; 174Re(EC)[from 169Tm(12C, 7n), E=115 MeV]; 152Eu(EC); measured Eγ, γγ-coin, γγ(t) using fast timing system at WNSL-Yale University. 168Hf, 174W; deduced levels, half-lives and B(E2) of first 2+ states. Comparison with previous experimental results. Systematics and analysis in terms of differentials of B(E2) values of the first 2+ states for 162,164,166,168,170,172,174,176,178Hf, 164,166,168,170,172,174,176,178,180W.

doi: 10.1103/PhysRevC.93.034323
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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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2015CO01      Phys.Rev. C 91, 014312 (2015)

A.Couture, R.F.Casten, R.B.Cakirli

Extended tests of an SU(3) partial dynamical symmetry

NUCLEAR STRUCTURE 104,106,108Mo, 168Er, 228Ra, 228,230,232Th, 232,234,236,238U, 238,240Pu; calculated B(E2) for transitions between γ band and ground-state band members. Parameter-free description in terms of a partial SU(3) dynamical symmetry (PDS). Comparison with predictions of pure rotor (Alaga) model, and with experimental results.

doi: 10.1103/PhysRevC.91.014312
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2015MO01      Phys.Rev. C 91, 014301 (2015)

F.Molina, B.Rubio, Y.Fujita, W.Gelletly, J.Agramunt, A.Algora, J.Benlliure, P.Boutachkov, L.Caceres, R.B.Cakirli, E.Casarejos, C.Domingo-Pardo, P.Doornenbal, A.Gadea, E.Ganioglu, M.Gascon, H.Geissel, J.Gerl, M.Gorska, J.Grebosz, R.Hoischen, R.Kumar, N.Kurz, I.Kojouharov, L.Amon Susam, H.Matsubara, A.I.Morales, Y.Oktem, D.Pauwels, D.Perez-Loureiro, S.Pietri, Zs.Podolyak, W.Prokopowicz, D.Rudolph, H.Schaffner, S.J.Steer, J.L.Tain, A.Tamii, S.Tashenov, J.J.Valiente-Dobon, S.Verma, H-J.Wollersheim

Tz= -1 → 0β decays of 54Ni, 50Fe, 46Cr, and 42Ti and comparison with mirror (3He, t) measurements

RADIOACTIVITY 42Ti, 46Cr, 50Fe, 54Ni(β+), (EC)[from Be(58Ni, X), E=680 MeV/nucleon]; measured Eγ, Iγ, γγ-, βγ-coin, implant-β correlations, half-lives from β and γ decay curves, yields of reaction products using fragment separator FRS, particle detectors and RISING Ge array at SIS-18 synchrotron facility of GSI. 42Sc, 46V, 50Mn, 54Co; deduced levels, J, π, β feedings, logft, B(GT+). Comparison of B(GT) values with those from (3He, t) reactions at RCNP-Osaka. Superallowed Fermi transitions between Tz=-1 and Tz=0 nuclei for testing the unitarity of the CKM matrix.

doi: 10.1103/PhysRevC.91.014301
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2015OR02      Acta Phys.Pol. B46, 709 (2015)

S.E.A.Orrigo, B.Rubio, Y.Fujita, B.Blank, W.Gelletly, J.Agramunt, A.Algora, P.Ascher, B.Bilgier, L.Caceres, R.B.Cakirli, H.Fujita, E.Ganioglu, M.Gerbaux, J.Giovinazzo, S.Grevy, O.Kamalou, H.C.Kozer, L.Kucuk, T.Kurtukian-Nieto, F.Molina, L.Popescu, A.M.Rogers, G.Susoy, C.Stodel, T.Suzuki, A.Tamii, J.C.Thomas

β-delayed γ-proton Decay in 56Zn: Analysis of the Charged-particle Spectrum

RADIOACTIVITY 56Zn(ECp) [from Ni(56Ni, X)56Zn, E=74.5 MeV/nucleon]; measured decay products, Ep, Ip; deduced the charged particle spectrum.

doi: 10.5506/APhysPolB.46.709
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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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2014CA29      Phys.Rev.Lett. 113, 112501 (2014)

R.F.Casten, R.B.Cakirli, K.Blaum, A.Couture

Evidence for Partial Dynamical Symmetries in Atomic Nuclei

NUCLEAR STRUCTURE 166,168Er, 158Gd, 168Yb, 162Dy, 184W, 184,186Os; analyzed available data; deduced relative B(E2) values, transition properties. Comparison with experimental data.

doi: 10.1103/PhysRevLett.113.112501
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2014GR10      Phys.Rev.Lett. 113, 092501 (2014)

E.Grodner, A.Gadea, P.Sarriguren, S.M.Lenzi, J.Grebosz, J.J.Valiente-Dobon, A.Algora, M.Gorska, P.H.Regan, D.Rudolph, G.de Angelis, J.Agramunt, N.Alkhomashi, L.Amon Susam, D.Bazzacco, J.Benlliure, G.Benzoni, P.Boutachkov, A.Bracco, L.Caceres, R.B.Cakirli, F.C.L.Crespi, C.Domingo-Pardo, M.Doncel, Zs.Dombradi, P.Doornenbal, E.Farnea, E.Ganioglu, W.Gelletly, J.Gerl, A.Gottardo, T.Huyuk, N.Kurz, S.Leoni, D.Mengoni, F.Molina, A.I.Morales, R.Orlandi, Y.Oktem, R.D.Page, D.Perez, S.Pietri, Zs.Podolyak, A.Poves, B.Quintana, S.Rinta-Antila, B.Rubio, B.S.Nara Singh, A.N.Steer, S.Verma, R.Wadsworth, O.Wieland, H.J.Wollersheim

Hindered Gamow-Teller Decay to the Odd-Odd N=Z 62Ga: Absence of Proton-Neutron T=0 Condensate in A=62

RADIOACTIVITY 62Ge(EC) [from 9Be(78Kr, X), E=750 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced T1/2, energy levels, J, π, Gamow-Teller strength B(GT). Comparison with ISM using KB3G interaction and QRPA approaches.

doi: 10.1103/PhysRevLett.113.092501
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2014OR03      Acta Phys.Pol. B45, 355 (2014)

S.E.A.Orrigo, B.Rubio, J.Agramunt, A.Algora, F.Molina, Y.Fujita, B.Blank, P.Ascher, M.Gerbaux, J.Giovinazzo, S.Grevy, T.Kurtukian-Nieto, W.Gelletly, B.Bilgier, R.B.Cakirli, E.Ganioglu, H.C.Kozer, L.Kucuk, G.Susoy, L.Caceres, O.Kamalou, C.Stodel, J.C.Thomas, H.Fujita, T.Suzuki, A.Tamii, L.Popescu, A.M.Rogers

Beta Decay of the Exotic Tz = -2, 56Zn Nucleus and Half-life of Various Proton-rich Tz = -1 Nuclei

RADIOACTIVITY 56Zn(β+p); measured decay products, Eπ, Iπ, Eγ, Iγ; deduced level scheme, J, π, Fermi strength.

doi: 10.5506/APhysPolB.45.355
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2014OR04      Phys.Rev.Lett. 112, 222501 (2014)

S.E.A.Orrigo, B.Rubio, Y.Fujita, B.Blank, W.Gelletly, J.Agramunt, A.Algora, P.Ascher, B.Bilgier, L.Caceres, R.B.Cakirli, H.Fujita, E.Ganioglu, M.Gerbaux, J.Giovinazzo, S.Grevy, O.Kamalou, H.C.Kozer, L.Kucuk, T.Kurtukian-Nieto, F.Molina, L.Popescu, A.M.Rogers, G.Susoy, C.Stodel, T.Suzuki, A.Tamii, J.C.Thomas

Observation of the β-Delayed γ-Proton Decay of 56Zn and its Impact on the Gamow-Teller Strength Evaluation

RADIOACTIVITY 56Zn(EC), (ECp) [from Ni(58Ni, X)56Zn, E=74.5 MeV/nucleon]; measured decay products, Eγ, Iγ, Ep, Ip; deduced γ and proton energies, intensities, Fermi and Gamow-Teller transition strengths, B(F), B(GT). Comparison with available data.

doi: 10.1103/PhysRevLett.112.222501
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2014RU08      Nucl.Data Sheets 120, 37 (2014)

B.Rubio, S.E.A.Orrigo, L.Kucuk, A.Montaner-Piza, Y.Fujita, H.Fujita, B.Blank, W.Gelletly, T.Adachi, J.Agramunt, A.Algora, P.Ascher, B.Bilgier, L.Caceres, R.B.Cakirli, G.de France, E.Ganioglu, M.Gerbaux, J.Giovinazzo, S.Grevy, O.Kamalou, H.C.Kozer, T.Kurtukian-Nieto, F.M.Marques, F.Molina, Y.Oktem, F.de Oliveira Santos, L.Perrot, L.Popescu, R.Raabe, A.M.Rogers, P.C.Srivastava, G.Susoy, T.Suzuki, A.Tamii, J.C.Thomas

Beta Decay Study of the Tz = -256Zn Nucleus and the Determination of the Half-Lives of a Few fp-shell Nuclei

RADIOACTIVITY 56,58,59Zn, 53Co(EC), (β+p), 55Ni(EC); measured decay products, Ep, Ip.; deduced energy levels, J, π, total proton branching ratios, β-delayed γ-emission.

doi: 10.1016/j.nds.2014.06.135
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2013BO27      Phys.Rev. C 88, 054309 (2013)

D.Bonatsos, S.Karampagia, R.B.Cakirli, R.F.Casten, K.Blaum, L.Amon Susam

Emergent collectivity in nuclei and enhanced proton-neutron interactions

NUCLEAR STRUCTURE Z=50-82, N=82-126; analyzed empirical values of proton-neutron interaction Vpn for even and odd Z nuclei, E(4+)/E(2+) values for even A nuclei; calculated average spatial overlaps (for deformation ϵ=0.22) for proton and neutron orbitals, Nilsson diagrams; deduced enhancement of the large empirical values of p-n interactions along the Z=N line indicative of collectivity, shape changes, and the saturation of deformation. Pseudoshell approach to heavy nuclei.

doi: 10.1103/PhysRevC.88.054309
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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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2013SH30      Phys.Rev. C 88, 024310 (2013)

D.Shubina, R.B.Cakirli, Yu.A.Litvinov, K.Blaum, C.Brandau, F.Bosch, J.J.Carroll, R.F.Casten, D.M.Cullen, I.J.Cullen, A.Y.Deo, B.Detwiler, C.Dimopoulou, F.Farinon, H.Geissel, E.Haettner, M.Heil, R.S.Kempley, C.Kozhuharov, R.Knobel, J.Kurcewicz, N.Kuzminchuk, S.A.Litvinov, Z.Liu, R.Mao, C.Nociforo, F.Nolden, Z.Patyk, W.R.Plass, A.Prochazka, M.W.Reed, M.S.Sanjari, C.Scheidenberger, M.Steck, Th.Stohlker, B.Sun, T.P.D.Swan, G.Trees, P.M.Walker, H.Weick, N.Winckler, M.Winkler, P.J.Woods, T.Yamaguchi, C.Zhou

Schottky mass measurements of heavy neutron-rich nuclides in the element range 70≤Z≤79 at the GSI Experimental Storage Ring

ATOMIC MASSES 181,183Lu, 185,186Hf, 187,188Ta, 189,190,191W, 192,193Re, 195Os; measured masses by Schottky mass spectrometry (SMS) technique using FRS-ESR facility at GSI. 181Hf, 181,182,183,185Ta, 184,186,187W, 189,191Re, 188,190,192,193Os, 191Ir, 194,196Pt, 196Au; measured Schottky frequency spectra for calibration purpose; deduced mass excesses, and compared with AME-2003. 179Lu, 182,182mHf, 184Ta, 186,187,188,190m,192mRe, 189,190m,191,194Os, 190,192,193,194,195Ir, 191Pt; measured Schottky frequency spectra. Bare, H- or He-like isotopes produced in 9Be(197Au, X) reaction using E(197Au)=469.35 MeV/nucleon beam from UNILAC and SIS-18 accelerators at GSI. Investigated correlations between S(2n) and energies of first 2+ states in even-even N=84-124, Z=62-78 isotopes; deduced collectivity. Systematics of S(2n) values for even N=100-124, odd Z=67-77.

doi: 10.1103/PhysRevC.88.024310
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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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2012CA44      J.Phys.:Conf.Ser. 366, 012007 (2012)

R.F.Casten, R.B.Cakirli

Simple patterns and Symmetries in Nuclei: Correlations of Mass and Spectroscopic Observables

COMPILATION Z=56-70; compiled E(2+1) energy, R4/2 ratio, B(E2:2+1≥0+1) and S2n; deduced mass and spectroscopic observables correlations near N≈80.

doi: 10.1088/1742-6596/366/1/012007
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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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2012OK04      Phys.Rev. C 86, 054305 (2012)

Y.Oktem, D.L.Balabanski, B.Akkus, L.Amon Susam, L.Atanasova, C.W.Beausang, R.B.Cakirli, R.F.Casten, M.Danchev, M.Djongolov, E.Ganioglu, K.A.Gladnishki, J.Tm.Goon, D.J.Hartley, A.A.Hecht, R.Krucken, J.R.Novak, G.Rainovski, L.L.Riedinger, T.Venkova, I.Yigitoglu, N.V.Zamfir, O.Zeidan

Triaxial deformation and nuclear shape transition in 192Au

NUCLEAR REACTIONS 186W(11B, 5n), E=68 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), linear polarization using YRAST Ball array at WNSL, Yale facility. 192Au; deduced high-spin levels, J, π, multipolarity, branching ratios, alignments, bands, B(M1)/B(E2), configurations. Comparisons with pairing and deformation self-consistent total Routhian surface (TRS), and cranked shell model (CSM) calculations.

doi: 10.1103/PhysRevC.86.054305
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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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2011KE03      Phys.Rev. C 84, 014311 (2011)

J.Ketelaer, G.Audi, T.Beyer, K.Blaum, M.Block, R.B.Cakirli, R.F.Casten, C.Droese, M.Dworschak, K.Eberhardt, M.Eibach, F.Herfurth, E.Minaya-Ramirez, Sz.Nagy, D.Neidherr, W.Nortershauser, C.Smorra, M.Wang

Mass measurements on stable nuclides in the rare-earth region with the Penning-trap mass spectrometer TRIGA-TRAP

ATOMIC MASSES 153Eu, 152,154,155,156,157,158,160Gd, 175,176Lu, 176,177,178,179,180Hf; measured masses using TOF-ICR technique and TRIGA-TRAP Penning-trap mass spectrometer; deduced δVpn values; evaluated mass excesses.

doi: 10.1103/PhysRevC.84.014311
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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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2010CA26      Phys.Rev. C 82, 061304 (2010)

R.B.Cakirli, K.Blaum, R.F.Casten

Indication of a mini-valence Wigner-like energy in heavy nuclei

NUCLEAR STRUCTURE Z=4-26, N=3-28; Z=62-74, N=90-110; analyzed double differences of binding energies for valence neutron and proton numbers in even-Z, even-N and even-Z, odd-N nuclei. Z=64-74, N=92-108; ground state Nilsson orbits for even-Z and even-N nuclei. Wigner?s spin-isospin symmetry and valence proton-neutron interaction.

doi: 10.1103/PhysRevC.82.061304
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2010CA27      Phys.Rev. C 82, 061306 (2010)

R.B.Cakirli, R.F.Casten, K.Blaum

Correlations of experimental isotope shifts with spectroscopic and mass observables

NUCLEAR STRUCTURE Z=12-20, N=10-32; Z=38-50, N=40-84; Z=52-56, N=62-92; Z=58-70, N=70-104; Z=72-82, N=84-132; analyzed mean-square charge radii, S(2n), B(E2) and energies of first 2+ states and their differentials in even-Z, even-N nuclei.

doi: 10.1103/PhysRevC.82.061306
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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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2009CA15      Acta Phys.Pol. B40, 493 (2009)

R.F.Casten, R.B.Cakirli

Evolution of Structure in Nuclei: Meditation by Sub-Shell Modifications and Relation to Binding Energies


2009CH08      Phys.Rev.Lett. 102, 122503 (2009)

L.Chen, Yu.A.Litvinov, W.R.Plass, K.Beckert, P.Beller, F.Bosch, D.Boutin, L.Caceres, R.B.Cakirli, J.J.Carroll, R.F.Casten, R.S.Chakrawarthy, D.M.Cullen, I.J.Cullen, B.Franzke, H.Geissel, J.Gerl, M.Gorska, G.A.Jones, A.Kishada, R.Knobel, C.Kozhuharov, S.A.Litvinov, Z.Liu, S.Mandal, F.Montes, G.Munzenberg, F.Nolden, T.Ohtsubo, Z.Patyk, Zs.Podolyak, R.Propri, S.Rigby, N.Saito, T.Saito, C.Scheidenberger, M.Shindo, M.Steck, P.Ugorowski, P.M.Walker, S.Williams, H.Weick, M.Winkler, H.-J.Wollersheim, T.Yamaguchi

Schottky Mass Measurement of the 208Hg Isotope: Implication for the Proton-Neutron Interaction Strength around Doubly Magic 208Pb

ATOMIC MASSES 208Hg; measured atomic mass using time resolved Schottky mass spectrometry.

doi: 10.1103/PhysRevLett.102.122503
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2009FU15      Int.J.Mod.Phys. E18, 2134 (2009)

Y.Fujita, B.Rubio, W.Gelletly, B.Blank, T.Adachi, A.Algora, P.Ascher, R.B.Cakirli, G.De France, J.Giovinazzo, S.Grevy, H.Fujita, L.Kucuk, M.Marques, F.Molina, Y.Oktem, F.De Oliveira Santos, L.Perrot, R.Raabe, P.C.Srivastava, G.Susoy, A.Tamii, H.-C.Thomas

Nuclear weak response from the combined study of β-decay and charge-exchange reaction

NUCLEAR REACTIONS 50Cr, 58Ni, 56Fe(3He, t), E=140 MeV/nucleon; measured reaction products; deduced GT transition strengths.

RADIOACTIVITY 58Zn(β+), (EC) [from Ni(64Zn, X)]; measured Eγ, Iγ; deduced T1/2.

doi: 10.1142/S0218301309014433
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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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2008CA21      Phys.Rev. C 78, 041301 (2008)

R.B.Cakirli, R.F.Casten

Empirical signature for shape transitions mediated by sub-shell changes

NUCLEAR STRUCTURE A=32, 100, 120, 150, 190, 220; Z=10-20, 38-46, 52-60, 56-68, 72-80, 84-94; analyzed 2+ level energies, ratios of 4+ to 2+ level energies, B(E2) values.

doi: 10.1103/PhysRevC.78.041301
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2008FI08      Phys.Rev. C 78, 034309 (2008)

C.R.Fitzpatrick, V.Werner, R.F.Casten, E.Williams, H.Ai, C.W.Beausang, R.B.Cakirli, G.Gurdal, A.Heinz, E.A.McCutchan, D.A.Meyer, E.Novitski, J.Qian, R.Winkler

Investigation into the B(E2) anomaly in 144Nd using Coulomb excitation

NUCLEAR REACTIONS 144Nd, 148Sm(48Ti, 48Ti'), E=130 MeV; measured Eγ, Iγ, σ; deduced B(E2) ratios. Coulomb excitation.

doi: 10.1103/PhysRevC.78.034309
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2008MC01      Phys.Rev. C 77, 054304 (2008)

E.A.McCutchan, R.F.Casten, V.Werner, E.Williams, R.Winkler, A.Wolf, Z.Berant, G.Gurdal, J.Qian, H.Ai, L.Amon, C.W.Beausang, D.S.Brenner, R.B.Cakirli, R.J.Casperson, C.R.Fitzpatrick, D.Frank, A.B.Garnsworthy, A.Heinz, R.Luttke, A.F.Mertz, Y.Oktem, N.Pietralla, P.H.Regan, B.Shoraka, J.R.Terry, N.J.Thompson

Enhanced mixing of intrinsic states in deformed Hf nuclei

RADIOACTIVITY 170,172,174Ta(β+), (EC) [from 159Tb(16O, 5n), E=100 MeV; 165Ho(12C, 5n), E=80 MeV; 168Er(11B, 5n), E=65 MeV]; measured Eγ, Iγ, γγ-coin, branching ratios. 170,172,174Hf; deduced levels, J, π. 166,168,170,172,174Hf; systematics.

doi: 10.1103/PhysRevC.77.054304
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2008MC04      Phys.Rev. C 78, 014320 (2008)

E.A.McCutchan, R.F.Casten, V.Werner, R.Winkler, R.B.Cakirli, G.Gurdal, X.Liang, E.Williams

β decay spectroscopy of 192Pt and the nature of 0+ excitations

RADIOACTIVITY 192Au(β+)(EC); measured Eγ, Iγ, γγ-coin. 192Pt; deduced levels, J, π, B(E2). 172,174,176,178,180,182,184,186,188,190,192,194Pt; systematics. Comparison with model calculations.

doi: 10.1103/PhysRevC.78.014320
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2008WE07      Phys.Rev. C 78, 031301 (2008)

V.Werner, N.Benczer-Koller, G.Kumbartzki, J.D.Holt, P.Boutachkov, E.Stefanova, M.Perry, N.Pietralla, H.Ai, K.Aleksandrova, G.Anderson, R.B.Cakirli, R.J.Casperson, R.F.Casten, M.Chamberlain, C.Copos, B.Darakchieva, S.Eckel, M.Evtimova, C.R.Fitzpatrick, A.B.Garnsworthy, G.Gurdal, A.Heinz, D.Kovacheva, C.Lambie-Hanson, X.Liang, P.Manchev, E.A.McCutchan, D.A.Meyer, J.Qian, A.Schmidt, N.J.Thompson, E.Williams, R.Winkler

Evidence for the microscopic formation of mixed-symmetry states from magnetic moment measurements

NUCLEAR REACTIONS C(92Zr, 92Zr'), (94Zr, 94Zr'), E=275 MeV; measured Eγ, Iγ, (particle)γ-coin. Comparison with shell model and quasiparticle phonon model calculations.

NUCLEAR MOMENTS C(92Zr, 92Zr'), (94Zr, 94Zr'), E=275 MeV; 92,94Zr; measured g factors. Transient field technique.

doi: 10.1103/PhysRevC.78.031301
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2007AS05      Acta Phys.Pol. B38, 1385 (2007)

S.F.Ashley, A.Linnemann, J.Jolie, P.H.Regan, K.Andgren, A.Dewald, E.A.McCutchan, B.Melon, O.Moller, N.V.Zamfir, L.Amon, N.Boelaert, R.B.Cakirli, R.F.Casten, R.M.Clark, C.Fransen, W.Gelletly, G.Gurdal, M.Heidemann, K.L.Keyes, M.N-.Erduran, D.A.Meyer, A.Papenberg, C.Plettner, G.Rainovski, R.V.Ribas, N.J.Thomas, J.Vinson, D.D.Warner, V.Werner, E.Williams, K.O.Zell

Lifetime Determination of Excited States in 106Cd

NUCLEAR REACTIONS 98Mo(12C, 4n)106Cd, E=60 MeV; 96Mo(13C, 3n)106Cd, E=43 MeV; measured Eγ, Iγ, lifetimes for isomeric states.


2007AS07      Phys.Rev. C 76, 064302 (2007)

S.F.Ashley, P.H.Regan, K.Andgren, E.A.McCutchan, N.V.Zamfir, L.Amon, R.B.Cakirli, R.F.Casten, R.M.Clark, W.Gelletly, G.Gurdal, K.L.Keyes, D.A.Meyer, M.N.Erduran, A.Papenberg, N.Pietralla, C.Plettner, G.Rainovski, R.V.Ribas, N.J.Thomas, J.Vinson, D.D.Warner, V.Werner, E.Williams, H.L.Liu, F.R.Xu

Intrinsic state lifetimes in 103Pd and 106, 107Cd

NUCLEAR REACTIONS 98Mo(12C, 3n), (12C, 4n), (12C, 2nα), (12C, 3nα), E=60 MeV; measured Eγ, Iγ, γγ coin. 103Pd, 106,107Cd; deduced levels, J, π, configurations, lifetimes using recoil distance Doppler shift and differential decay cutoff methods.

doi: 10.1103/PhysRevC.76.064302
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2007OK05      Phys.Rev. C 76, 044315 (2007); Erratum Phys.Rev. C 78, 069904 (2008)

Y.Oktem, D.L.Balabanski, B.Akkus, C.W.Beausang, M.Bostan, R.B.Cakirli, R.F.Casten, M.Danchev, M.Djongolov, M.N.Erduran, S.Erturk, K.A.Gladniski, G.Gurdal, J.Tm.Goon, D.J.Hartley, A.A.Hecht, R.Krucken, N.Nikolov, J.R.Novak, G.Rainovski, L.L.Riedinger, I.Yigitoglu, N.V.Zamfir, O.Zeidan

High-spin states in 191, 193Au and 192Pt: Evidence for oblate deformation and triaxial shapes

NUCLEAR REACTIONS 186W(11B, 4n), (11B, 4np), (11B, 6n), E=68 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ), linear polarization.191,193Au, 192Pt deduced levels, J, π; calculated deformation parameters using Particle-Plus-Triaxial Rotor model.

doi: 10.1103/PhysRevC.76.044315
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2007ST06      Phys.Rev.Lett. 98, 132502 (2007)

M.Stoitsov, R.B.Cakirli, R.F.Casten, W.Nazarewicz, W.Satula

Empirical Proton-Neutron Interactions and Nuclear Density Functional Theory: Global, Regional, and Local Comparisons

NUCLEAR STRUCTURE Z=6-92; Cd, Er, Pb, Ra, U; analyzed binding energy differences, valence proton-neutron interactions in even-even nuclides.

doi: 10.1103/PhysRevLett.98.132502
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2007TH07      Acta Phys.Pol. B38, 1381 (2007)

N.J.Thompson, P.H.Regan, A.B.Garnsworthy, A.D.Ayangeakaa, H.C.Ai, L.Amon, R.B.Cakirli, R.F.Casten, C.R.Fitzpatrick, S.J.Freeman, G.Guerdal, A.Heinz, G.A.Jones, E.A.McCutchan, J.Qian, V.Werner, S.J.Williams, R.Winkler

Spectroscopy of 91Zr51 at Medium to High Spins

NUCLEAR REACTIONS 82Se(13C, 4n)91Zr, E=50 MeV; measured Eγ, Iγ, γγ-coinc. 91Zr deduced levels, J, π.


2007WO08      Phys.Rev. C 76, 047308 (2007)

A.Wolf, Z.Berant, A.Heinz, V.Werner, E.A.McCutchan, G.Gurdal, R.B.Cakirli, Y.Oktem, J.Ai, L.Amon, C.W.Beausang, D.S.Brenner, R.F.Casten, R.J.Casperson, K.Dusling, C.R.Fitzpatrick, A.B.Gransworthy, N.Pietralla, J.Qian, P.H.Regan, N.J.Thompson, E.Williams, R.Winkler

g factor of the 2+1 state of 170Hf

RADIOACTIVITY 170Ta(β+), (EC) [from 159Tb(16O, 5n), E=100 MeV]; measured Eγ, Iγ, γγ(θ) in static magnetic field. 170Hf; deduced levels, J, π, g-factor of first 2+ state.

doi: 10.1103/PhysRevC.76.047308
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Data from this article have been entered in the XUNDL database. For more information, click here.


2006BA75      Int.J.Mod.Phys. E15, 1735 (2006)

D.L.Balabanski, K.A.Gladnishki, G.Lo Bianco, A.Saltarelli, N.V.Zamfir, E.A.McCutchan, H.Ai, R.F.Casten, A.Heinz, D.A.Meyer, C.Plettner, J.Qian, V.Werner, E.Williams, B.Akkus, L.Amon, R.B.Cakirli, M.N.Erduran, Y.Oktem, S.F.Ashley, P.H.Regan, G.Rainovski

Evidence for X(5) critical point symmetry in 128Ce

NUCLEAR REACTIONS 100Mo(32S, 4n), E=120 MeV; measured Eγ, Iγ, γγ-coin, DSA. 128Ce levels deduced T1/2, B(E2), symmetry features. DSAM and recoil-distance techniques.

doi: 10.1142/S0218301306005538
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2006BR05      Phys.Rev. C 73, 034315 (2006)

D.S.Brenner, R.B.Cakirli, R.F.Casten

Valence proton-neutron interactions throughout the mass surface

NUCLEAR STRUCTURE Z=4-82; analyzed atomic masses, average proton-neutron interaction energies; deduced systematic features.

doi: 10.1103/PhysRevC.73.034315
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2006CA15      Phys.Rev.Lett. 96, 132501 (2006)

R.B.Cakirli, R.F.Casten

Direct Empirical Correlation between Proton-Neutron Interaction Strengths and the Growth of Collectivity in Nuclei

NUCLEAR STRUCTURE Z=50-82; analyzed collective features; deduced correlation with proton-neutron interaction strength.

doi: 10.1103/PhysRevLett.96.132501
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2006FE06      Phys.Rev. C 73, 051301 (2006)

M.S.Fetea, R.B.Cakirli, R.F.Casten, D.D.Warner, E.A.McCutchan, D.A.Meyer, A.Heinz, H.Ai, G.Gurdal, J.Qian, R.Winkler

First test of the E(5/4) Bose-Fermi symmetry: The structure of 135Ba

RADIOACTIVITY 135La(EC) [from 136Ba(p, 2n)]; measured Eγ, Iγ, γγ-coin. 135Ba deduced levels, J, π, B(E2), symmetry features. Comparison with interacting boson-fermion approximation and shell model predictions.

doi: 10.1103/PhysRevC.73.051301
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2006OK04      Phys.Rev. C 74, 027304 (2006)

Y.Oktem, R.B.Cakirli, R.F.Casten, R.J.Casperson, D.S.Brenner

Simple interpretation of proton-neutron interactions in rare earth nuclei

NUCLEAR STRUCTURE 156,158,160Gd, 158,160,162,164Dy, 162,164,166,168,170Er, 166,168,170,172,174Yb, 170,172,174,176,178,180Hf, 176,178,180,182W; analyzed proton-neutron interaction data; deduced systematic features.

doi: 10.1103/PhysRevC.74.027304
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2006WI15      Phys.Rev. C 74, 024302 (2006)

E.Williams, C.Plettner, E.A.McCutchan, H.Levine, N.V.Zamfir, R.B.Cakirli, R.F.Casten, H.Ai, C.W.Beausang, G.Gurdal, A.Heinz, J.Qian, D.A.Meyer, N.Pietralla, V.Werner

Revisiting anomalous B(E2;4+1 → 2+1)/B(E2;2+1 → 0+1) values in 98Ru and 180Pt

NUCLEAR REACTIONS 27Al(98Ru, 98Ru'), E=289 MeV; measured Eγ, Iγ, γγ-coin following projectile Coulomb excitation. 98Ru deduced transitions B(E2). 122Sn(62Ni, 4n), E=265 MeV; measured Doppler-shifted Eγ, Iγ, γγ-coin. 180Pt deduced transitions T1/2, B(E2). Comparison with previous results, model predictions.

doi: 10.1103/PhysRevC.74.024302
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2006ZH08      Phys.Rev. C 73, 037301 (2006)

J.Zhang, R.F.Casten, A.Wolf, Z.Berant, R.B.Cakirli, N.V.Zamfir, E.A.McCutchan

Consistent interpretation of B(E2) values and g factors in deformed nuclei

NUCLEAR STRUCTURE Z=64-74; analyzed g factors, B(E2) for even-even nuclides, effective size of valence space. Phenomenological model.

doi: 10.1103/PhysRevC.73.037301
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2005AN26      J.Phys.(London) G31, S1563 (2005)

K.Andgren, S.F.Ashley, P.H.Regan, E.A.McCutchan, N.V.Zamfir, L.Amon, R.B.Cakirli, R.F.Casten, R.M.Clark, G.Gurdal, K.L.Keyes, D.A.Meyer, M.N.Erduran, A.Papenberg, N.Pietralla, C.Plettner, G.Rainovski, R.V.Ribas, N.J.Thomas, J.Vinson, D.D.Warner, V.Werner, E.Williams

RDM lifetime measurements in 107Cd

NUCLEAR REACTIONS 98Mo(12C, 3n), E=60 MeV; measured Doppler-shifted Eγ, Iγ, γγ-coin. 107Cd levels deduced T1/2, B(E2). Recoil-distance method.

doi: 10.1088/0954-3899/31/10/033
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2005CA08      Phys.Rev.Lett. 94, 092501 (2005); Erratum Phys.Rev.Lett. 95, 119903 (2005)

R.B.Cakirli, D.S.Brenner, R.F.Casten, E.A.Millman

Proton-Neutron Interactions and the New Atomic Masses

NUCLEAR STRUCTURE Z=50-102; analyzed masses; deduced neutron-proton interaction features.

doi: 10.1103/PhysRevLett.94.092501
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2005RE23      J.Phys.(London) G31, S1605 (2005)

J.J.Ressler, C.W.Beausang, R.F.Casten, N.V.Zamfir, H.Ai, H.Amro, M.Babilon, R.B.Cakirli, J.A.Caggiano, G.Gurdal, A.Heinz, R.O.Hughes, S.D.Langdown, E.A.McCutchan, D.A.Meyer, C.Plettner, J.Qian, P.H.Regan, M.J.S.Sciacchitano, N.J.Thomas, E.Williams, A.Yamamoto

Isomers and seniority in the trans-Pb nuclei

NUCLEAR REACTIONS 182,184W(30Si, 4n), E=148 MeV; measured delayed Eγ, Iγ, γγ-, (recoil)γ-coin. 208,210Ra deduced levels, J, π, isomers T1/2, B(E2). Mass separator.

doi: 10.1088/0954-3899/31/10/041
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2004CA42      Phys.Rev. C 70, 044312 (2004)

R.B.Cakirli, R.F.Casten, E.A.McCutchan, H.Ai, H.Amro, M.Babilon, C.W.Beausang, A.Heinz, R.O.Hughes, D.A.Meyer, C.Plettner, J.J.Ressler, N.V.Zamfir

Breakdown of vibrational structure in 98Ru

NUCLEAR REACTIONS 96Mo(α, 2n), E=24, 26, 28, 30 MeV; measured Eγ, Iγ, γγ-coin. 98Ru deduced levels, J, π, breakdown of vibrational structure.

doi: 10.1103/PhysRevC.70.044312
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1405. Data from this article have been entered in the XUNDL database. For more information, click here.


2004CA43      Phys.Rev. C 70, 047302 (2004)

R.B.Cakirli, R.F.Casten, J.Jolie, N.Warr

Highly anomalous yrast B(E2) values and vibrational collectivity

NUCLEAR STRUCTURE Z=40-80; analyzed transitions B(E2). 98Ru, 114Te, 114Xe; deduced anomalous B(E2) values, collective features.

doi: 10.1103/PhysRevC.70.047302
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2004RE03      Phys.Rev. C 69, 034317 (2004)

J.J.Ressler, R.F.Casten, N.V.Zamfir, C.W.Beausang, R.B.Cakirli, H.Ai, H.Amro, M.A.Caprio, A.A.Hecht, A.Heinz, S.D.Langdown, E.A.McCutchan, D.A.Meyer, C.Plettner, P.H.Regan, M.J.S.Sciacchitano, A.D.Yamamoto

Transition from the seniority regime to collective motion

NUCLEAR STRUCTURE 92Mo, 94Ru, 96Pd, 98Cd, 118,120,122,124,126Sn, 148Dy, 150Er, 152Yb, 154Hf, 202,204,206,208,210,212Po, 204,206,208,210,212,214Rn, 206,208,210,212,214,216Ra; analyzed B(E2); deduced signature for transition to collective motion.

doi: 10.1103/PhysRevC.69.034317
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