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230 results on '"Müller-Gatermann, C."'

101. Evidence of octupole-phonons at high spin in 207Pb

Author

Ralet, D., primary, Clément, E., additional, Georgiev, G., additional, Stuchbery, A.E., additional, Rejmund, M., additional, Van Isacker, P., additional, de France, G., additional, Lemasson, A., additional, Ljungvall, J., additional, Michelagnoli, C., additional, Navin, A., additional, Balabanski, D.L., additional, Atanasova, L., additional, Blazhev, A., additional, Bocchi, G., additional, Carroll, R., additional, Dudouet, J., additional, Dupont, E., additional, Fornal, B., additional, Franchoo, S., additional, Fransen, C., additional, Müller-Gatermann, C., additional, Goasduff, A., additional, Gadea, A., additional, John, P.R., additional, Kocheva, D., additional, Konstantinopoulos, T., additional, Korichi, A., additional, Kusoglu, A., additional, Lenzi, S.M., additional, Leoni, S., additional, Lozeva, R., additional, Maj, A., additional, Perez, R., additional, Pietralla, N., additional, Shand, C., additional, Stezowski, O., additional, Wilmsen, D., additional, Yordanov, D., additional, Barrientos, D., additional, Bednarczyk, P., additional, Birkenbach, B., additional, Boston, A.J., additional, Boston, H.C., additional, Burrows, I., additional, Cederwall, B., additional, Ciemala, M., additional, Collado, J., additional, Crespi, F., additional, Cullen, D., additional, Eberth, H.J., additional, Goupil, J., additional, Harkness, L., additional, Hess, H., additional, Jungclaus, A., additional, Korten, W., additional, Labiche, M., additional, Menegazzo, R., additional, Mengoni, D., additional, Million, B., additional, Nyberg, J., additional, Podolyák, Zs., additional, Pullia, A., additional, Quintana Arnés, B., additional, Recchia, F., additional, Reiter, P., additional, Saillant, F., additional, Salsac, M.D., additional, Sanchis, E., additional, Theisen, C., additional, Valiente Dobon, J.J., additional, and Wieland, O., additional

Published
2019
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102. Isomer spectroscopy in Ba133 and high-spin structure of Ba134

Author

Kaya, L., primary, Vogt, A., additional, Reiter, P., additional, Siciliano, M., additional, Shimizu, N., additional, Utsuno, Y., additional, Wang, H.-K., additional, Gargano, A., additional, Coraggio, L., additional, Itaco, N., additional, Arnswald, K., additional, Bazzacco, D., additional, Birkenbach, B., additional, Blazhev, A., additional, Bracco, A., additional, Bruyneel, B., additional, Corradi, L., additional, Crespi, F. C. L., additional, de Angelis, G., additional, Droste, M., additional, Eberth, J., additional, Esmaylzadeh, A., additional, Farnea, E., additional, Fioretto, E., additional, Fransen, C., additional, Gadea, A., additional, Giaz, A., additional, Görgen, A., additional, Gottardo, A., additional, Hadyńska-Klęk, K., additional, Hess, H., additional, Hirsch, R., additional, John, P. R., additional, Jolie, J., additional, Jungclaus, A., additional, Karayonchev, V., additional, Kornwebel, L., additional, Korten, W., additional, Leoni, S., additional, Lewandowski, L., additional, Lunardi, S., additional, Menegazzo, R., additional, Mengoni, D., additional, Michelagnoli, C., additional, Mijatović, T., additional, Montagnoli, G., additional, Montanari, D., additional, Müller-Gatermann, C., additional, Napoli, D., additional, Podolyák, Zs., additional, Pollarolo, G., additional, Recchia, F., additional, Régis, J.-M., additional, Saed-Samii, N., additional, Şahin, E., additional, Scarlassara, F., additional, Schomacker, K., additional, Seidlitz, M., additional, Siebeck, B., additional, Söderström, P.-A., additional, Stefanini, A. M., additional, Stezowski, O., additional, Szilner, S., additional, Szpak, B., additional, Teruya, E., additional, Ur, C., additional, Valiente-Dobón, J. J., additional, Wolf, K., additional, Yanase, K., additional, Yoshinaga, N., additional, and Zell, K. O., additional

Published
2019
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104. Shape coexistence in Hg178

Author

Müller-Gatermann, C., primary, Dewald, A., additional, Fransen, C., additional, Auranen, K., additional, Badran, H., additional, Beckers, M., additional, Blazhev, A., additional, Braunroth, T., additional, Cullen, D. M., additional, Fruet, G., additional, Goldkuhle, A., additional, Grahn, T., additional, Greenlees, P. T., additional, Herzáň, A., additional, Jakobsson, U., additional, Jenkins, D., additional, Jolie, J., additional, Julin, R., additional, Juutinen, S., additional, Konki, J., additional, Leino, M., additional, Litzinger, J., additional, Nomura, K., additional, Pakarinen, J., additional, Peura, P., additional, Procter, M. G., additional, Rahkila, P., additional, Ruotsalainen, P., additional, Sandzelius, M., additional, Sarén, J., additional, Scholey, C., additional, Sorri, J., additional, Stolze, S., additional, Taylor, M. J., additional, Uusitalo, J., additional, and Zell, K. O., additional

Published
2019
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105. Probing isospin symmetry in the (Fe50, Mn50, Cr50) isobaric triplet via electromagnetic transition rates

Author

Giles, M. M., primary, Nara Singh, B. S., additional, Barber, L., additional, Cullen, D. M., additional, Mallaburn, M. J., additional, Beckers, M., additional, Blazhev, A., additional, Braunroth, T., additional, Dewald, A., additional, Fransen, C., additional, Goldkuhle, A., additional, Jolie, J., additional, Mammes, F., additional, Müller-Gatermann, C., additional, Wölk, D., additional, Zell, K. O., additional, Lenzi, S. M., additional, and Poves, A., additional

Published
2019
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106. A new dedicated plunger device for the GALILEO γ-ray detector array

Author

Müller-Gatermann, C., primary, von Spee, F., additional, Goasduff, A., additional, Bazzacco, D., additional, Beckers, M., additional, Braunroth, T., additional, Boso, A., additional, Cocconi, P., additional, de Angelis, G., additional, Dewald, A., additional, Fransen, C., additional, Goldkuhle, A., additional, Gottardo, A., additional, Gozzelino, A., additional, Hadyńska-Klęk, K., additional, Jawroski, G., additional, John, P.R., additional, Jolie, J., additional, Lenzi, S.M., additional, Litzinger, J., additional, Menegazzo, R., additional, Mengoni, D., additional, Napoli, D.R., additional, Recchia, F., additional, Siciliano, M., additional, Testov, D., additional, Thiel, S., additional, Valiente-Dobón, J.J., additional, and Zell, K.O., additional

Published
2019
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107. Lifetimes in At211 and their implications for the nuclear structure above Pb208

Author

Karayonchev, V., primary, Blazhev, A., additional, Esmaylzadeh, A., additional, Jolie, J., additional, Dannhoff, M., additional, Diel, F., additional, Dunkel, F., additional, Fransen, C., additional, Gerhard, L. M., additional, Gerst, R.-B., additional, Knafla, L., additional, Kornwebel, L., additional, Müller-Gatermann, C., additional, Régis, J.-M., additional, Warr, N., additional, Zell, K. O., additional, Stoyanova, M., additional, and Van Isacker, P., additional

Published
2019
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108. Lifetime measurements in 182Pt using γ–γ fast-timing.

Author

Häfner, G., Esmaylzadeh, A., Jolie, J., Régis, J.-M., Müller-Gatermann, C., Blazhev, A., Fransen, C., Gerst, R.-B., Karayonchev, V., Knafla, L., Saed-Samii, N., and Zell, K.-O.

Subjects
HEAVY ion fusion reactions, EXCITED states, SCINTILLATORS, SCINTILLATION counters
Abstract

The level lifetimes of the 2 1 + and 4 1 + states in 182 Pt have been re-measured employing the γ – γ fast-timing technique using fast LaBr 3 (Ce) scintillators. Excited states in the nucleus of interest were populated by the fusion-evaporation reaction 170 Yb (16 O , 4n) 182 Pt at a beam energy of 87 MeV provided by the FN Tandem accelerator of the University of Cologne. The lifetime of the 2 1 + state was re-measured with high accuracy to be τ = 563 (12) ps and resolves inconsistencies from previous measurements. Experimental results are compared to theoretical calculations in the framework of the sd-IBM with and without configuration mixing. [ABSTRACT FROM AUTHOR]

Published
2021
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109. Isomer spectroscopy in Ba-133 and high-spin structure of Ba-134

Author

Federal Ministry of Education and Research (Germany), European Commission, Ministerio de Ciencia e Innovación (España), Ministerio de Economía y Competitividad (España), Science and Technology Facilities Council (UK), Generalitat Valenciana, Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Shimizu, N., Utsuno, Y., Wang, H. K., Gargano, A., Coraggio, L., Itaco, N., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F.C.L., De Angelis, G., Droste, M., Eberth, J., Esmaylzadeh, A., Farnea, E., Fioretto, E., Fransen, C., Gadea, Andrés, Giaz, A., Görgen, A., Gottardo, A., Hadynska-Klek, K., Hess, H., Hirsch, R., John, P. R., Jolie, J., Jungclaus, Andrea, Karayonchev, V., Kornwebel, L., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatovic, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Régis, J.-M., Saed-Samii, N., Sahin, E., Scarlassara, F., Schomacker, K., Seidlitz, M., Siebeck, B., Söderström, P.-A., Stefanini, A. M., Stezowski, O., Szilner, S., Szpak, B., Teruya, E., Ur, C., Valiente-Dobón, J. J., Wolf, K., Yanase, K., Yoshinaga, N., Zell, K. O., Federal Ministry of Education and Research (Germany), European Commission, Ministerio de Ciencia e Innovación (España), Ministerio de Economía y Competitividad (España), Science and Technology Facilities Council (UK), Generalitat Valenciana, Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Shimizu, N., Utsuno, Y., Wang, H. K., Gargano, A., Coraggio, L., Itaco, N., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F.C.L., De Angelis, G., Droste, M., Eberth, J., Esmaylzadeh, A., Farnea, E., Fioretto, E., Fransen, C., Gadea, Andrés, Giaz, A., Görgen, A., Gottardo, A., Hadynska-Klek, K., Hess, H., Hirsch, R., John, P. R., Jolie, J., Jungclaus, Andrea, Karayonchev, V., Kornwebel, L., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatovic, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Régis, J.-M., Saed-Samii, N., Sahin, E., Scarlassara, F., Schomacker, K., Seidlitz, M., Siebeck, B., Söderström, P.-A., Stefanini, A. M., Stezowski, O., Szilner, S., Szpak, B., Teruya, E., Ur, C., Valiente-Dobón, J. J., Wolf, K., Yanase, K., Yoshinaga, N., and Zell, K. O.

Abstract

The transitional nuclei Ba-134 and Ba-133 are investigated after multinucleon transfer employing the high-resolution Advanced GAmma Tracking Array coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and after fusion-evaporation reaction at the FN tandem accelerator of the University of Cologne, Germany. The J(pi) = 19/2(+) state at 1942 keV in Ba-133 is identified as an isomer with a half-life of 66.6(20) ns corresponding to a B(E1) value of 7.7(4) x 10(-6) e(2) fm(2) for the J(pi) = 19/2(+) to J(pi) = 19/2(-) transition. The level scheme of Ba-134 above the J(pi) = 10(+) isomer is extended to approximately 6 MeV. A pronounced backbending is observed at h omega = 0.38 MeV along the positive-parity yrast band. The results are compared to the high-spin systematics of the Z = 56 isotopes. Large-scale shell-model calculations employing the GCN50:82, SN100PN, SNV, PQM130, Realistic SM, and EPQQM interactions reproduce the experimental findings and elucidate the structure of the high-spin states. The shell-model calculations employing the GCN50:82 and PQM130 interactions reproduce alignment properties and provide detailed insight into the microscopic origin of this phenomenon in transitional Ba-134.

Published
2019

110. Millisecond 23/2(+) isomers in the N=79 isotones Xe-133 and Ba-135

Author

Kaya, L., Vogt, A., Reiter, P., Müller- Gatermann, C., Siciliano, M., Coraggio, L., Itaco, N., Gargano, A., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F. C. L., de Angelis, G., Droste, M., Eberth, J., Farnea, E., Fioretto, E., Fransen, C., Gadea, A., Giaz, A., Görgen, A., Gottardo, A., Hadyńska-Klęk, K., Hess, H., Hetzenegger, R., Hirsch, R., John, P. R., Jolie, J., Jungclaus, A., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, Tea, Montagnoli, G., Montanari, D., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Rosiak, D., Saed-Samii, N., Şahin, E., Scarlassara, F., Seidlitz, M., Söderström, P.-A., Stefanini, A. M., Stezowski, O., Szilner, Suzana, Szpak, B., Ur, C., Valiente-Dobón, J. J., Weinert, M., Wolf, K., and Zell, K. O.

Subjects
nuclear spetroscopy, shell model
Abstract

Detailed information on isomeric states in A approximate to 135 nuclei is exploited to shell-model calculations in the region northwest of doubly magic nucleus Sn-132. The N = 79 isotones Xe-133 and Ba-135 are studied after multinucleon transfer in the Xe-136 + Pb- 208 reaction employing the high-resolution Advanced GAmma Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy and in a pulsed- beam experiment at the FN tandem accelerator of the University of Cologne Germany utilizing a Be-9 + Te-130 fusion-evaporation reaction at a beam energy of 40 MeV. Isomeric states are identified via delayed gamma-ray spectroscopy. Hitherto tentative excitation energy spin and parity assignments of the 2017-keV J(pi) = 23/2(+) isomer in Xe-133 are confirmed and a half-life of T-1/2 = 8.64(13) ms is measured. The 2388-keV state in Ba-135. is identified as a J(pi) = 23/2(+) isomer with a half-life of 1.06(4) ms. The new results show a smooth onset of isomeric J(pi) = 23/2(+) states along the N = 79 isotones and close a gap in the high-spin systematics towards the recently investigated J(pi) = 23/2(+) isomer in Nd-139. The resulting systematics of M2 reduced transition probabilities is discussed within the of the nuclear shell model. Latest large-scale shell- model calculations employing the SN100PN, GCN50:82, SN100-KTH and a realistic effective interaction reproduce the experimental findings generally well and give insight into the structure of the isomers.

Published
2018
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111. Low-lying electromagnetic transition strengths in 180 Pt

Author

Müller-Gatermann, C., Dewald, A., Fransen, C., Braunroth, T., Jolie, J., Litzinger, J., Regis, J. M., von Spee, F., Warr, N., Zell, K. O., Grahn, Tuomas, Greenlees, Paul, Hauschild, Karl, Jakobsson, Ulrika, Julin, Rauno, Juutinen, Sakari, Ketelhut, Steffen, Nieminen, Päivi, Nyman, Markus, Peura, Pauli, Rahkila, Panu, Ruotsalainen, Panu, Sandzelius, Mikael, Sarén, Jan, Scholey, Catherine, Sorri, Juha, Stolze, Sanna, Uusitalo, Juha, and Petkov, P.

Subjects
electromagnetic transition, Nuclear Experiment
Abstract

Lifetime measurements have been performed using the 98 Mo ( 86 Kr , 4 n ) 180 Pt reaction at a beam energy of 380 MeV, and the recoil distance Doppler-shift method. In a second experiment the 168 Yb ( 16 O , 4 n ) 180 Pt reaction at a beam energy of 88 MeV using the Ge-gated γ − γ fast timing technique was used to determine lifetimes. Lifetimes of the four lowest yrast states of 180 Pt have been determined. The experimental data are compared to calculations within the framework of the interacting boson model and the general collective model. Both models predict a deformed ground state and are consistent with all the remaining experimental results. peerReviewed

Published
2018

112. High-spin structure in the transitional nucleus $^{131}\mathrm{Xe}$: Competitive neutron and proton alignment in the vicinity of the $N=82$ shell closure

Author

Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Birkenbach, B., Blazhev, A., Coraggio, L., Teruya, E., Yoshinaga, N., Higashiyama, K., Arnswald, K., Bazzacco, D., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F.C.L., de Angelis, G., Eberth, J., Farnea, E., Fioretto, E., Fransen, C., Fu, B., Gadea, A., Gargano, A., Giaz, A., Görgen, A., Gottardo, A., Hadyńska-Klęk, K., Hess, H., Hetzenegger, R., Hirsch, R., Itaco, N., John, P.R., Jolie, J., Jungclaus, A., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Podolyák, Zs., Pollarolo, G., Pullia, A., Queiser, M., Recchia, F., Rosiak, D., Saed-Samii, N., Şahin, E., Scarlassara, F., Schneiders, D., Seidlitz, M., Siebeck, B., Smith, J.F., Söderström, P.A., Stefanini, A.M., Steinbach, T., Stezowski, O., Szilner, S., Szpak, B., Ur, C., Valiente-Dobón, J.J., Wolf, K., Zell, K.O., Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Laue-Langevin (ILL), ILL, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

International audience; The transitional nucleus Xe131 is investigated after multinucleon transfer in the Xe136+Pb208 and Xe136+U238 reactions employing the high-resolution Advanced γ-Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and as an elusive reaction product in the fusion-evaporation reaction Sn124(B11,p3n)Xe131 employing the High-efficiency Observatory for γ-Ray Unique Spectroscopy (HORUS) γ-ray array coupled to a double-sided silicon strip detector at the University of Cologne, Germany. The level scheme of Xe131 is extended to 5 MeV. A pronounced backbending is observed at ℏω≈0.4MeV along the negative-parity one-quasiparticle νh11/2(α=−1/2) band. The results are compared to the high-spin systematics of the Z=54 isotopes and the N=77 isotones. Large-scale shell-model calculations employing the PQM130, SN100PN, GCN50:82, SN100-KTH, and a realistic effective interaction reproduce the experimental findings and provide guidance to elucidate the structure of the high-spin states. Further calculations in Xe129−132 provide insight into the changing nuclear structure along the Xe chain towards the N=82 shell closure. Proton occupancy in the π0h11/2 orbital is found to be decisive for the description of the observed backbending phenomenon.

Published
2018
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113. Evidence for Coexisting Shapes through Lifetime Measurements in $^{98}$Zr

Author

Singh, Purnima, Korten, W., Hagen, T.W., Görgen, A., Grente, L., Salsac, M.-D., Farget, F., Clément, E., De France, G., Braunroth, T., Bruyneel, B., Celikovic, I., Delaune, O., Dewald, A., Dijon, A., Delaroche, J.-P., Girod, M., Hackstein, M., Jacquot, B., Libert, J., Litzinger, J., Ljungvall, J., Louchart, C., Gottardo, A., Michelagnoli, C., Müller-Gatermann, C., Napoli, D.R., Otsuka, T., Pillet, N., Recchia, F., Rother, W., Sahin, E., Siem, S., Sulignano, B., Togashi, T., Tsunoda, Y., Theisen, Ch., Valiente-Dobon, J.J., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics and Astronomy (all), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Nuclear Physics
Abstract

The lifetimes of the first excited 2^{+}, 4^{+}, and 6^{+} states in ^{98}Zr were measured with the recoil-distance Doppler shift method in an experiment performed at GANIL. Excited states in ^{98}Zr were populated using the fission reaction between a 6.2 MeV/u ^{238}U beam and a ^{9}Be target. The γ rays were detected with the EXOGAM array in correlation with the fission fragments identified by mass and atomic number in the VAMOS++ spectrometer. Our result shows a very small B(E2;2_{1}^{+}→0_{1}^{+}) value in ^{98}Zr, thereby confirming the very sudden onset of collectivity at N=60. The experimental results are compared to large-scale Monte Carlo shell model and beyond-mean-field calculations. The present results indicate the coexistence of two additional deformed shapes in this nucleus along with the spherical ground state.

Published
2018
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114. Millisecond $23/{2}^{+}$ isomers in the $N=79$ isotones $^{133}\mathrm{Xe}$ and $^{135}\mathrm{Ba}$

Author

Kaya, L., Vogt, A., Reiter, P., Müller-Gatermann, C., Siciliano, M., Coraggio, L., Itaco, N., Gargano, A., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F.C.L., De Angelis, G., Droste, M., Eberth, J., Farnea, E., Fioretto, E., Fransen, C., Gadea, A., Giaz, A., Görgen, A., Gottardo, A., Hadyńska-Klęk, K., Hess, H., Hetzenegger, R., Hirsch, R., John, P.R., Jolie, J., Jungclaus, A., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, T., Montagnoli, G., Montanari, D., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Rosiak, D., Saed-Samii, N., Şahin, E., Scarlassara, F., Seidlitz, M., Söderström, P.A., Stefanini, A.M., Stezowski, O., Szilner, S., Szpak, B., Ur, C., Valiente-Dobón, J.J., Weinert, M., Wolf, K., Zell, K.O., Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Laue-Langevin (ILL), ILL, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Structure
Abstract

International audience; Detailed information on isomeric states in A≈135 nuclei is exploited to benchmark shell-model calculations in the region northwest of doubly magic nucleus Sn132. The N=79 isotones Xe133 and Ba135 are studied after multinucleon transfer in the Xe136+Pb208 reaction employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy and in a pulsed-beam experiment at the FN tandem accelerator of the University of Cologne, Germany utilizing a Be9+Te130 fusion-evaporation reaction at a beam energy of 40 MeV. Isomeric states are identified via delayed γ-ray spectroscopy. Hitherto tentative excitation energy, spin, and parity assignments of the 2107-keV Jπ=23/2+ isomer in Xe133 are confirmed and a half-life of T1/2=8.64(13) ms is measured. The 2388-keV state in Ba135 is identified as a Jπ=23/2+ isomer with a half-life of 1.06(4) ms. The new results show a smooth onset of isomeric Jπ=23/2+ states along the N=79 isotones and close a gap in the high-spin systematics towards the recently investigated Jπ=23/2+ isomer in Nd139. The resulting systematics of M2 reduced transition probabilities is discussed within the framework of the nuclear shell model. Latest large-scale shell-model calculations employing the SN100PN, GCN50:82, SN100-KTH, and a realistic effective interaction reproduce the experimental findings generally well and give insight into the structure of the isomers.

Published
2018
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115. Millisecond 23/2+ isomers in the N = 79 isotones 133Xe and 135Ba

Author

Kaya, L., Vogt, A., Reiter, P., Müller-Gatermann, C., Siciliano, M., Coraggio, L., Itaco, N., Gargano, A., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F. C. L., de Angelis, G., Droste, M., Eberth, J., Farnea, E., Fioretto, E., Fransen, C., Gadea, A., Giaz, A., Görgen, A., Gottardo, A., Hadynska-Klek, K., Hess, H., Hetzenegger, R., Hirsch, R., John, P. R., Jolie, J., Jungclaus, A., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatovic, T., Montagnoli, G., Montanari, D., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Rosiak, D., Saed-Samii, N., Sahin, E., Scarlassara, F., Seidlitz, M., Söderström, P.-A., Stefanini, A. M., Stezowski, O., Szilner, S., Szpak, B., Ur, C., Valiente-Dobón, J. J., Weinert, M., Wolf, K, and Zell, K. O.

Subjects
TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY
Abstract

Detailed information on isomeric states in A ≈ 135 nuclei is exploited to benchmark shell-model calculations in the region northwest of doubly-magic nucleus 132Sn. The N = 79 isotones 133Xe and 135Ba are studied after multinucleon transfer (MNT) in the 136Xe + 208Pb reaction employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy and in a pulsed-beam experiment at the FN tandem accelerator of the University of Cologne, Germany utilizing a 9Be+130Te fusion-evaporation reaction at a beam energy of 40 MeV. Isomeric states are identified via delayed γ-ray spectroscopy. Hitherto tentative excitation energy, spin, and parity assignments of the 2107-keV Jπ = 23/2+ isomer in 133Xe are confirmed and a half-life of T1/2 = 8.64(13) ms is measured. The 2388-keV state in 135Ba is identified as a Jπ = 23/2+ isomer with a half-life of 1.06(4) ms. The new results show a smooth onset of isomeric Jπ = 23/2+ states along the N = 79 isotones and close a gap in the high-spin systematics towards the recently investigated Jπ = 23/2+ isomer in 139Nd. The resulting systematics of M2 reduced transition probabilities is discussed within the framework of the nuclear shell model. Latest large-scale shell-model calculations employing the SN100PN, GCN50:82, SN100-KTH, and a realistic effective interaction reproduce the experimental findings generally well and give insight into the structure of the isomers.

Published
2018

116. Cross-shell excitations from the fp shell: Lifetime measurements in 61-Zn

Author

Queiser, M, Vogt, A, Seidlitz, M, Reiter, P, Togashi, T, Shimizu, N, Utsuno, Y, Otsuka, T, Honma, M, Petkov, P, Arnswald, K, Spanier, R, Birkenbach, B, Blazhev, A, Braunroth, T, Dewald, A, Eberth, J, Fransen, C, Fu, B, Hess, H, Hetzenegger, R, Hirsch, R, Jolie, L, Karayonchev, V, Kaya, L, Lewandowski, L, Müller-Gatermann, C, Régis, J-M, Rosiak, D, Schneiders, D, Siebeck, B, Steinbach, T, Wolf, K, and Zell, K-O

Abstract

© 2017 American Physical Society. Lifetimes of excited states in the neutron-deficient nucleus Zn61 were measured employing the recoil-distance Doppler-shift (RDDS) and the electronic fast-timing methods at the University of Cologne. The nucleus of interest was populated as an evaporation residue in Ca40(Mg24,n2p)Zn61 and Ni58(α,n)Zn61 reactions at 67 and 19 MeV, respectively. Five lifetimes were measured for the first time, including the lifetime of the 5/21- isomer at 124 keV. Short lifetimes from the RDDS analysis are corrected for Doppler-shift attenuation (DSA) in the target and stopper foils. Ambiguous observations in previous measurements were resolved. The obtained lifetimes are compared to predictions from different sets of shell-model calculations in the fp, f5/2pg9/2, and multishell fp-g9/2d5/2 model spaces. The band built on the 9/21+ state exhibits a prolate deformation with β≈0.24. Especially, the inclusion of cross-shell excitation into the 1d5/2 orbital is found to be decisive for the description of collectivity in the first excited positive-parity band. ispartof: Physical Review C vol:96 issue:4 status: published

Published
2017

117. High-spin structures in ¹³²\mathrmXe and ¹³³\mathrmXe and evidence for isomers along the ℕ=79 isotones

Author

Vogt, A., Siciliano, M., Birkenbach, B., Reiter, P., Hadyńska-Klęk, K., Wheldon, C., Valiente-Dobón, J.J., Teruya, E, Yoshinaga, N., Arnswald, K., Bazzacco, D., Blazhev, A., Bracco, A., Bruyneel, B, Chakrawarthy, R.S., Chapman, R., Cline, D., Corradi, L., Crespi, F.C.L., Cromaz, M., de Angelis, G., Eberth, J., Fallon, P., Farnea, E., Fioretto, E., Hess, H., Hetzenegger, R., Hirsch, R., Hua, H., John, P.R., Jolie, J., Jungclaus, A., Karayonchev, V., Kaya, L., Korten, W., Lee, I.Y., Leoni, S., Liang, X., Lunardi, S., Macchiavelli, A.O., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatovic, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Pearson, C.J., Podolyak, Zsolt, Pollarolo, G., Pullia, A., Queiser, M., Recchia, F., Regan, P.H., Régis, J.-M., Saed-Samii, N., Sahin, E., Scarlassara, F., Seidlitz, M., Siebeck, B., Sletten, G., Smith, J.F., Söderström, P.-A., Stefanini, A.M., Stezowski, O., Szilner, S., Szpak, B., Teng, R., Ur, C., Warner, D.D., Wolf, K., Wu, C.Y., and Zell, K.O.

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

The 50 � N,Z � 82 region of the Segrè chart, spanning the nuclei “northwest” of doubly-magic 132Sn, is an intriguing study ground to test the suitability and predictive power of nuclear models at both low and high spins. Low-spin excited states in the nearly spherical nuclei near proton- and neutronshell closures are well described as anharmonic vibrations [1] with a gradual change to rotational structures further away from the closed shells. Further on, quasiparticle excitations play a key role and are responsible for the presence of yrast-trap isomers. These long-lived states interrupt and fragment the decay flux in spectroscopic investigations. High-j couplings involving the unique-parity h11/2 neutron-hole orbital give rise to a wealth of high-spin states with multi-quasiparticle character. In particular, detailed knowledge of isomers is crucial to ascertain the active quasiparticle configurations in the specific nucleus.

Published
2017

118. Nuclear moments and transition probabilities in the vicinity of the doubly magic '\^{208}'Pb. '\^{210}'Po and '\^{210}'Pb studies during the LS2

Author

Stuchbery, A, Georgiev, G, Allmond, J, Balabanski, D, Bignell, L, Blazhev, A, Boukhari, A, Braunroth, T, Dewald, A, Fransen, C, Gaffney, L, Gladnishki, K, Kibedi, T, Kusoglu, A, Lane, G, Ljungvall, L, Lozeva, R, Mitchell, A, Müller-Gatermann, C, Rainovski, G, Ralet, D, and Warr, N

Subjects
Detectors and Experimental Techniques
Published
2017

119. Isomers and high-spin structures in the N=81 isotones Xe135 and Ba137

Author

Vogt, A., Birkenbach, B., Reiter, P., Blazhev, A., Siciliano, M., Hadyńska Klęk, K., Valiente Dobón, J. J., Wheldon, C., Teruya, E., Yoshinaga, N., Arnswald, K., Bazzacco, D., Bowry, M., Bracco, A., Bruyneel, B., Chakrawarthy, R. S., Chapman, R., Cline, D., Corradi, L., Crespi, F. C. L, Cromaz, M., de Angelis, G., Eberth, J., Fallon, P., Farnea, E., Fioretto, E., Freeman, S. J., Fu, B., Gadea, A., Geibel, K., Gelletly, W., Gengelbach, A., Giaz, Agnese, Görgen, A., Gottardo, A., Hayes, A. B., Hess, H., Hirsch, R., Hua, H., John, P. R., Jolie, J., Jungclaus, A., Kaya, L., Korten, W., Lee, I. Y., Leoni, S., Lewandowski, L., Liang, X., Lunardi, S., Macchiavelli, A. O., Menegazzo, R., Mengoni, Daniele, Michelagnoli, C., Mijatović, T., Montagnoli, Giovanna, Montanari, D., Müller Gatermann, C., Napoli, D., Pearson, C. J., Pellegri, L., Podolyák, Z. s., Pollarolo, G., Pullia, A., Queiser, M., Radeck, F., Recchia, Francesco, Regan, P. H., Rosiak, D., Saed Samii, N., Şahin, E., Scarlassara, Fernando, Schneiders, D., Seidlitz, M., Siebeck, B., Sletten, G., Smith, J. F., Söderström, P. A., Stefanini, A. M., Steinbach, T., Stezowski, O., Szilner, S., Szpak, B., Teng, R., Ur, C., Vandone, V., Warner, D. D., Wiens, A., C. Y., Wu, and Zell, K. O.

Subjects
Particle and Plasma Physics, Molecular, Nuclear, Atomic, Nuclear & Particles Physics
Abstract

The high-spin structures and isomers of the N=81 isotones Xe135 and Ba137 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+U238 and (ii) Xe136+Pb208 MNT reactions employing the high-resolution Advanced Gamma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (iii) in the Xe136+Pt198 MNT reaction employing the γ-ray array GAMMASPHERE in combination with the gas-detector array CHICO, and (iv) via a B11+Te130 fusion-evaporation reaction with the HORUS γ-ray array at the University of Cologne. The high-spin level schemesof Xe135 and Ba137 are considerably extended to higher energies. The 2058-keV (19/2-) state in Xe135 is identified as an isomer, closing a gap in the systematics along the N=81 isotones. Its half-life is measured to be 9.0(9) ns, corresponding to a reduced transition probability of B(E2,19/2-→15/2-)=0.52(6) W.u. The experimentally deduced reduced transition probabilities of the isomeric states are compared to shell-model predictions. Latest shell-model calculations reproduce the experimental findings generally well and provide guidance to the interpretation of the new levels.

Published
2017

120. Identification of high-spin proton configurations in Ba136 and Ba137

Author

Kaya, L., primary, Vogt, A., additional, Reiter, P., additional, Müller-Gatermann, C., additional, Gargano, A., additional, Coraggio, L., additional, Itaco, N., additional, Blazhev, A., additional, Arnswald, K., additional, Bazzacco, D., additional, Birkenbach, B., additional, Bracco, A., additional, Bruyneel, B., additional, Corradi, L., additional, Crespi, F. C. L., additional, de Angelis, G., additional, Droste, M., additional, Eberth, J., additional, Farnea, E., additional, Fioretto, E., additional, Fransen, C., additional, Gadea, A., additional, Giaz, A., additional, Görgen, A., additional, Gottardo, A., additional, Hadyńska-Klęk, K., additional, Hess, H., additional, Hetzenegger, R., additional, Hirsch, R., additional, John, P. R., additional, Jolie, J., additional, Jungclaus, A., additional, Korten, W., additional, Leoni, S., additional, Lewandowski, L., additional, Lunardi, S., additional, Menegazzo, R., additional, Mengoni, D., additional, Michelagnoli, C., additional, Mijatović, T., additional, Montagnoli, G., additional, Montanari, D., additional, Napoli, D., additional, Podolyák, Zs., additional, Pollarolo, G., additional, Recchia, F., additional, Rosiak, D., additional, Saed-Samii, N., additional, Şahin, E., additional, Siciliano, M., additional, Scarlassara, F., additional, Seidlitz, M., additional, Söderström, P.-A., additional, Stefanini, A. M., additional, Stezowski, O., additional, Szilner, S., additional, Szpak, B., additional, Ur, C., additional, Valiente-Dobón, J. J., additional, Weinert, M., additional, Wolf, K., additional, and Zell, K. O., additional

Published
2019
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121. Improvements in the measurement of small 14CO2 samples at CologneAMS

Author

Stolz, A., primary, Dewald, A., additional, Heinze, S., additional, Altenkirch, R., additional, Hackenberg, G., additional, Herb, S., additional, Müller-Gatermann, C., additional, Schiffer, M., additional, Zitzer, G., additional, Wotte, A., additional, Rethemeyer, J., additional, and Dunai, T., additional

Published
2019
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124. Determination of Lifetimes of Excited States in Neutron-rich $^{20}$O Isotope from Experiment with the AGATA+PARIS+VAMOS Setup

Author

Ciemała, M., primary, Ziliani, S., additional, Crespi, F., additional, Leoni, S., additional, Fornal, B., additional, Maj, A., additional, Bednarczyk, P., additional, Benzoni, G., additional, Bracco, A., additional, Boiano, C., additional, Bottoni, S., additional, Brambilla, S., additional, Bast, M., additional, Beckers, M., additional, Braunroth, T., additional, Camera, F., additional, Cieplicka-Oryńczak, N., additional, Clément, E., additional, Dorvaux, O., additional, Ertürk, S., additional, De France, G., additional, Goldkuhle, A., additional, Grębosz, J., additional, Harakeh, M.N., additional, Iskra, Ł.W., additional, Jacquot, B., additional, Karpov, A., additional, Kicińska-Habior, M., additional, Kim, Y., additional, Kmiecik, M., additional, Lemasson, A., additional, Li, H., additional, Matea, I., additional, Mazurek, K., additional, Michelagnoli, C., additional, Millon, B., additional, Müller-Gatermann, C., additional, Napiorkowski, P., additional, Nanal, V., additional, Matejska-Minda, M., additional, Rejmund, M., additional, Sowicki, B., additional, Schmitt, Ch., additional, Stanoiu, M., additional, Stefan, I., additional, Wasilewska, B., additional, Zielińska, M., additional, and Ziębliński, M., additional

Published
2019
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125. Spectroscopy of Neutron-rich C, O, N and F Isotopes with the AGATA+PARIS+VAMOS Setup at GANIL

Author

Ziliani, S., primary, Ciemała, M., additional, Crespi, F., additional, Leoni, S., additional, Fornal, B., additional, Maj, A., additional, Bednarczyk, P., additional, Benzoni, G., additional, Bracco, A., additional, Boiano, C., additional, Bottoni, S., additional, Brambilla, S., additional, Bast, M., additional, Beckers, M., additional, Braunroth, T., additional, Camera, F., additional, Cieplicka-Oryńczak, N., additional, Clément, E., additional, Dorvaux, O., additional, Erturk, S., additional, De France, G., additional, Goldkuhle, A., additional, Grębosz, J., additional, Harakeh, M.N., additional, Iskra, Ł.W., additional, Jacquot, B., additional, Kicińska-Habior, M., additional, Kim, Y., additional, Kmiecik, M., additional, Lemasson, A., additional, Li, H., additional, Matea, I., additional, Mazurek, K., additional, Michelagnoli, C., additional, Million, B., additional, Müller-Gatermann, C., additional, Napiorkowski, P., additional, Nanal, V., additional, Matejska-Minda, M., additional, Rejmund, M., additional, Schmitt, Ch., additional, Stanoiu, M., additional, Stefan, I., additional, Wasilewska, B., additional, and Ziębliński, M., additional

Published
2019
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127. Millisecond 23/2+ isomers in the N=79 isotones Xe133 and Ba135

Author

Kaya, L., primary, Vogt, A., additional, Reiter, P., additional, Müller-Gatermann, C., additional, Siciliano, M., additional, Coraggio, L., additional, Itaco, N., additional, Gargano, A., additional, Arnswald, K., additional, Bazzacco, D., additional, Birkenbach, B., additional, Blazhev, A., additional, Bracco, A., additional, Bruyneel, B., additional, Corradi, L., additional, Crespi, F. C. L., additional, de Angelis, G., additional, Droste, M., additional, Eberth, J., additional, Farnea, E., additional, Fioretto, E., additional, Fransen, C., additional, Gadea, A., additional, Giaz, A., additional, Görgen, A., additional, Gottardo, A., additional, Hadyńska-Klęk, K., additional, Hess, H., additional, Hetzenegger, R., additional, Hirsch, R., additional, John, P. R., additional, Jolie, J., additional, Jungclaus, A., additional, Korten, W., additional, Leoni, S., additional, Lewandowski, L., additional, Lunardi, S., additional, Menegazzo, R., additional, Mengoni, D., additional, Michelagnoli, C., additional, Mijatović, T., additional, Montagnoli, G., additional, Montanari, D., additional, Napoli, D., additional, Podolyák, Zs., additional, Pollarolo, G., additional, Recchia, F., additional, Rosiak, D., additional, Saed-Samii, N., additional, Şahin, E., additional, Scarlassara, F., additional, Seidlitz, M., additional, Söderström, P.-A., additional, Stefanini, A. M., additional, Stezowski, O., additional, Szilner, S., additional, Szpak, B., additional, Ur, C., additional, Valiente-Dobón, J. J., additional, Weinert, M., additional, Wolf, K., additional, and Zell, K. O., additional

Published
2018
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128. Evidence for Coexisting Shapes through Lifetime Measurements in Zr98

Author

Singh, Purnima, primary, Korten, W., additional, Hagen, T. W., additional, Görgen, A., additional, Grente, L., additional, Salsac, M.-D., additional, Farget, F., additional, Clément, E., additional, de France, G., additional, Braunroth, T., additional, Bruyneel, B., additional, Celikovic, I., additional, Delaune, O., additional, Dewald, A., additional, Dijon, A., additional, Delaroche, J.-P., additional, Girod, M., additional, Hackstein, M., additional, Jacquot, B., additional, Libert, J., additional, Litzinger, J., additional, Ljungvall, J., additional, Louchart, C., additional, Gottardo, A., additional, Michelagnoli, C., additional, Müller-Gatermann, C., additional, Napoli, D. R., additional, Otsuka, T., additional, Pillet, N., additional, Recchia, F., additional, Rother, W., additional, Sahin, E., additional, Siem, S., additional, Sulignano, B., additional, Togashi, T., additional, Tsunoda, Y., additional, Theisen, Ch., additional, and Valiente-Dobon, J. J., additional

Published
2018
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130. Lifetime determination in Hg190,192,194,196 via γ−γ fast-timing spectroscopy

Author

Esmaylzadeh, A., primary, Gerhard, L. M., additional, Karayonchev, V., additional, Régis, J.-M., additional, Jolie, J., additional, Bast, M., additional, Blazhev, A., additional, Braunroth, T., additional, Dannhoff, M., additional, Dunkel, F., additional, Fransen, C., additional, Häfner, G., additional, Knafla, L., additional, Ley, M., additional, Müller-Gatermann, C., additional, Schomacker, K., additional, Warr, N., additional, and Zell, K.-O., additional

Published
2018
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131. High-spin structure in the transitional nucleus Xe131 : Competitive neutron and proton alignment in the vicinity of the N=82 shell closure

Author

Kaya, L., primary, Vogt, A., additional, Reiter, P., additional, Siciliano, M., additional, Birkenbach, B., additional, Blazhev, A., additional, Coraggio, L., additional, Teruya, E., additional, Yoshinaga, N., additional, Higashiyama, K., additional, Arnswald, K., additional, Bazzacco, D., additional, Bracco, A., additional, Bruyneel, B., additional, Corradi, L., additional, Crespi, F. C. L., additional, de Angelis, G., additional, Eberth, J., additional, Farnea, E., additional, Fioretto, E., additional, Fransen, C., additional, Fu, B., additional, Gadea, A., additional, Gargano, A., additional, Giaz, A., additional, Görgen, A., additional, Gottardo, A., additional, Hadyńska-Klęk, K., additional, Hess, H., additional, Hetzenegger, R., additional, Hirsch, R., additional, Itaco, N., additional, John, P. R., additional, Jolie, J., additional, Jungclaus, A., additional, Korten, W., additional, Leoni, S., additional, Lewandowski, L., additional, Lunardi, S., additional, Menegazzo, R., additional, Mengoni, D., additional, Michelagnoli, C., additional, Mijatović, T., additional, Montagnoli, G., additional, Montanari, D., additional, Müller-Gatermann, C., additional, Napoli, D., additional, Podolyák, Zs., additional, Pollarolo, G., additional, Pullia, A., additional, Queiser, M., additional, Recchia, F., additional, Rosiak, D., additional, Saed-Samii, N., additional, Şahin, E., additional, Scarlassara, F., additional, Schneiders, D., additional, Seidlitz, M., additional, Siebeck, B., additional, Smith, J. F., additional, Söderström, P.-A., additional, Stefanini, A. M., additional, Steinbach, T., additional, Stezowski, O., additional, Szilner, S., additional, Szpak, B., additional, Ur, C., additional, Valiente-Dobón, J. J., additional, Wolf, K., additional, and Zell, K. O., additional

Published
2018
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133. Low collectivity of the first 2+ states of 212,210Po

Author

Kocheva, D., primary, Rainovski, G., additional, Jolie, J., additional, Pietralla, N., additional, Blazhev, A., additional, Astier, A., additional, Altenkirch, R., additional, Bast, M., additional, Beckers, M., additional, Ansari, S., additional, Braunroth, Th., additional, Cappellazzo, M., additional, Cortés, M.L., additional, Dewald, A., additional, Diel, F., additional, Djongolov, M., additional, Fransen, C., additional, Gladnishki, K., additional, Goldkuhle, A., additional, Hennig, A., additional, Karayonchev, V., additional, Keatings, J.M., additional, Kluge, E., additional, Kröll, Th., additional, Litzinger, J., additional, Moschner, K., additional, Müller-Gatermann, C., additional, Petkov, P., additional, Rudigier, M., additional, Scheck, M., additional, Spagnoletti, P., additional, Scholz, Ph., additional, Schmidt, T., additional, Spieker, M., additional, Stahl, C., additional, Stegmann, R., additional, Stolz, A., additional, Vogt, A., additional, Stoyanova, M., additional, Thöle, P., additional, Warr, N., additional, Werner, V., additional, Witt, W., additional, Wölk, D., additional, Zamora, J.C., additional, Zell, K.O., additional, Van Isacker, P., additional, and Ponomarev, V.Yu., additional

Published
2018
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134. Low-lying electromagnetic transition strengths in Pt180

Author

Müller-Gatermann, C., primary, Dewald, A., additional, Fransen, C., additional, Braunroth, T., additional, Jolie, J., additional, Litzinger, J., additional, Régis, J. M., additional, von Spee, F., additional, Warr, N., additional, Zell, K. O., additional, Grahn, T., additional, Greenlees, P. T., additional, Hauschild, K., additional, Jakobsson, U., additional, Julin, R., additional, Juutinen, S., additional, Ketelhut, S., additional, Nieminen, P., additional, Nyman, M., additional, Peura, P., additional, Rahkila, P., additional, Ruotsalainen, P., additional, Sandzelius, M., additional, Sarén, J., additional, Scholey, C., additional, Sorri, J., additional, Stolze, S., additional, Uusitalo, J., additional, and Petkov, P., additional

Published
2018
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135. Enhanced collectivity along the N = Z line: lifetime measurements in 44Ti, 48Cr, and 52Fe

Author

Arnswald, K., primary, Reiter, P., additional, Coraggio, L., additional, Birkenbach, B., additional, Blazhev, A., additional, Braunroth, T., additional, Dewald, A., additional, Fransen, C., additional, Fu, B., additional, Gargano, A., additional, Hess, H., additional, Hirsch, R., additional, Itaco, N., additional, Lenzi, S. M., additional, Lewandowski, L., additional, Litzinger, J., additional, Müller-Gatermann, C., additional, Queiser, M., additional, Rosiak, D., additional, Schneiders, D., additional, Seidlitz, M., additional, Siebeck, B., additional, Steinbach, T., additional, Vogt, A., additional, Wolf, K., additional, and Zell, K. O., additional

Published
2018
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136. Isomers and high-spin structures in the $N$=81 isotones $^{135}$Xe and $^{137}$Ba

Author

Vogt, A., Birkenbach, B., Reiter, P., Blazhev, A., Siciliano, M., Hadyńska-Klęk, K., Valiente-Dobón, J.J., Wheldon, C., Teruya, E., Yoshinaga, N., Arnswald, K., Bazzacco, D., Bowry, M., Bracco, A., Bruyneel, B., Chakrawarthy, R.S., Chapman, R., Cline, D., Corradi, L., Crespi, F.C. L, Cromaz, M., De Angelis, G., Eberth, J., Fallon, P., Farnea, E., Fioretto, E., Freeman, S.J., Fu, B., Gadea, A., Geibel, K., Gelletly, W., Gengelbach, A., Giaz, A., Görgen, A., Gottardo, A., Hayes, A.B., Hess, H., Hirsch, R., Hua, H., John, P.R., Jolie, J., Jungclaus, A., Kaya, L., Korten, W., Lee, I.Y., Leoni, S., Lewandowski, L., Liang, X., Lunardi, S., Macchiavelli, A.O., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Pearson, C.J., Pellegri, L., Podolyák, Zs., Pollarolo, G., Pullia, A., Queiser, M., Radeck, F., Recchia, F., Regan, P.H., Rosiak, D., Saed-Samii, N., Şahin, E., Scarlassara, F., Schneiders, D., Seidlitz, M., Siebeck, B., Sletten, G., Smith, J.F., Söderström, P.A., Stefanini, A.M., Steinbach, T., Stezowski, O., Szilner, S., Szpak, B., Teng, R., Ur, C., Vandone, V., Warner, D.D., Wiens, A., Wu, C.Y., Zell, K.O., Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

International audience; The high-spin structures and isomers of the N=81 isotones Xe135 and Ba137 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+U238 and (ii) Xe136+Pb208 MNT reactions employing the high-resolution Advanced Gamma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (iii) in the Xe136+Pt198 MNT reaction employing the γ-ray array GAMMASPHERE in combination with the gas-detector array CHICO, and (iv) via a B11+Te130 fusion-evaporation reaction with the HORUS γ-ray array at the University of Cologne. The high-spin level schemesof Xe135 and Ba137 are considerably extended to higher energies. The 2058-keV (19/2−) state in Xe135 is identified as an isomer, closing a gap in the systematics along the N=81 isotones. Its half-life is measured to be 9.0(9) ns, corresponding to a reduced transition probability of B(E2,19/2−→15/2−)=0.52(6) W.u. The experimentally deduced reduced transition probabilities of the isomeric states are compared to shell-model predictions. Latest shell-model calculations reproduce the experimental findings generally well and provide guidance to the interpretation of the new levels.

Published
2017
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137. High-spin structures in $^{132}$Xe and $^{133}$Xe and evidence for isomers along the $N=79$ isotones

Author

Vogt, A., Siciliano, M., Birkenbach, B., Reiter, P., Hadyńska-Klęk, K., Wheldon, C., Valiente-Dobón, J.J., Teruya, E., Yoshinaga, N., Arnswald, K., Bazzacco, D., Blazhev, A., Bracco, A., Bruyneel, B., Chakrawarthy, R.S., Chapman, R., Cline, D., Corradi, L., Crespi, F.C.L., Cromaz, M., De Angelis, G., Eberth, J., Fallon, P., Farnea, E., Fioretto, E., Fransen, C., Freeman, S.J., Fu, B., Gadea, A., Gelletly, W., Giaz, A., Görgen, A., Gottardo, A., Hayes, A.B., Hess, H., Hetzenegger, R., Hirsch, R., Hua, H., John, P.R., Jolie, J., Jungclaus, A., Karayonchev, V., Kaya, L., Korten, W., Lee, I.Y., Leoni, S., Liang, X., Lunardi, S., Macchiavelli, A.O., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Pearson, C.J., Podolyák, Zs., Pollarolo, G., Pullia, A., Queiser, M., Recchia, F., Regan, P.H., Régis, J.M., Saed-Samii, N., Şahin, E., Scarlassara, F., Seidlitz, M., Siebeck, B., Sletten, G., Smith, J.F., Söderström, P.A., Stefanini, A.M., Stezowski, O., Szilner, S., Szpak, B., Teng, R., Ur, C., Warner, D.D., Wolf, K., Wu, C.Y., Zell, K.O., Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Laue-Langevin (ILL), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), ILL, Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

International audience; The transitional nuclei Xe132 and Xe133 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+Pb208 MNT reactions employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (ii) in the Xe136+Pt198 MNT reaction employing the GAMMASPHERE spectrometer in combination with the gas-detector array CHICO, and (iii) as an evaporation residue after a Te130(α,xn)Xe134−xn fusion-evaporation reaction employing the HORUS γ-ray array at the University of Cologne. The high-spin level schemes are considerably extended above the Jπ=(7−) and (10+) isomers in Xe132 and above the 11/2− isomer in Xe133. The results are compared to the high-spin systematics of the Z=54 as well as the N=78 and N=79 chains. Furthermore, evidence is found for a long-lived (T1/2≫1μs) isomer in Xe133 which closes a gap along the N=79 isotones. Shell-model calculations employing the SN100PN and PQM130 effective interactions reproduce the experimental findings and provide guidance to the interpretation of the observed high-spin features.

Published
2017
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138. A revised B(E2; 2$^{+}_{1} \to 0^{+}_{1}$) value in the semi-magic nucleus $^{210}$Po

Author

Kocheva , D., Rainovski , G., Jolie , J., Pietralla , N., Blazhev , A., Astier , A., Altenkirch , R., Ansari , S., Braunroth , Th., Cortés , M.L., Dewald , A., Diel , F., Djongolov , M., Fransen , C., Gladnishki , K., Hennig , A., Karayonchev , V., Keatings , J.M., Kluge , E., Litzinger , J., Müller-Gatermann , C., Petkov , P., Rudigier , M., Scheck , M., Scholz , Ph., Spagnoletti , P., Spieker , M., Stahl , C., Stegmann , R., Stoyanova , M., Thöle , P., Warr , N., Werner , V., Zell , K.O., Van Isacker , P., Ponomarev , V.Yu., Wölk , D., Witt , W., Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière ( CSNSM ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Grand Accélérateur National d'Ions Lourds ( GANIL ), and Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 25.45.Hi, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 190 ≤ A ≤ 219, Random-phase approximations, 27.80.+w, Nuclear Theory (nucl-th), Electromagnetic transitions, Transfer reactions, 21.60.Jz, 21.10.Tg, 23.20.-g, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), Nuclear Experiment, [ PHYS.NUCL ] Physics [physics]/Nuclear Theory [nucl-th]
Abstract

International audience; The lifetimes of the $ 2^+_1$ , the $ 2^+_2$ and the $ 3^-_1$ states of$^{210}$Po have been measured in the$^{208}$Pb($^{12}$C,$^{10}$Be)$^{210}$Po transfer reaction by the Doppler-shift attenuation method. The result for the lifetime of the $ 2^+_1$ state is about three times shorter than the adopted value. However, the new value still does not allow for a consistent description of the properties of the yrast $ 2^+_1$ , $ 4^+_1$ , $ 6^+_1$ , and $ 8^+_1$ states of$^{210}$Po in the framework of nuclear shell models. Quasi-particle Phonon Model (QPM) calculations also cannot overcome this problem thus indicating the existence of a peculiarity which is neglected in both theoretical approaches.

Published
2017
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139. Low collectivity of the ${2}_{1}^{+}$ state of $^{212}\mathrm{Po}$

Author

Kocheva, D., Rainovski, G., Jolie, J., Pietralla, N., Blazhev, A., Altenkirch, R., Ansari, S., Astier, A., Bast, M., Beckers, M., Braunroth, Th., Cappellazzo, M., Dewald, A., Diel, F., Djongolov, M., Fransen, C., Gladnishki, K., Goldkuhle, A., Hennig, A., Karayonchev, V., Keatings, J.M., Kluge, E., Kröll, Th., Litzinger, J., Moschner, K., Müller-Gatermann, C., Petkov, P., Scheck, M., Scholz, Ph., Schmidt, T., Spagnoletti, P., Stahl, C., Stegmann, R., Stolz, A., Vogt, A., Warr, N., Werner, V., Wölk, D., Zamora, J.C., Zell, K.O., Ponomarev, V.Yu., Van Isacker, P., Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

International audience; The lifetime of the $2^+_1$ state of $^{212}$Po was measured in the $^{208}$Pb($^{12}$C,$^{8}$Be)$^{212}$Po transfer reaction by γ -ray spectroscopy employing the recoil distance Doppler shift (RDDS) method. The derived absolute B(E2) value of 2.6(3)W.u. indicates a low collectivity and contradicts previous claims of α-cluster components in the structure of the $2^+_1$ state. It is demonstrated that a consistent description of the properties of the $2^+_1$−$4^+_1$−$6^+_1$−$8^+_1$ sequence in $^{212}$Po cannot be achieved in the framework of a single-j shell-model calculation, either. This puzzle is traced to the properties of the seniority-2 configurations in $^{210}$Pb and $^{210}$Po.

Published
2017
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140. Lifetime measurements in 52,54Ti to study shell evolution toward N=32

Author

Goldkuhle, A., Fransen, C., Blazhev, A., Beckers, M., Birkenbach, B., Braunroth, T., Clément, E., Dewald, A., Dudouet, J., Eberth, J., Hess, H., Jacquot, B., Jolie, J., Kim, Y.H., Lemasson, A., Lenzi, S.M., Li, H.J., Litzinger, J., Michelagnoli, C., Müller-Gatermann, C., Nara Singh, B.S., Pérez-Vidal, R.M., Ralet, D., Reiter, P., Vogt, A., Warr, N., Zell, K.O., Ataç, A., Barrientos, D., Barthe-Dejean, C., Benzoni, G., Boston, A.J., Boston, H.C., Bourgault, P., Burrows, I., Cacitti, J., Cederwall, B., Ciemala, M., Cullen, D.M., De France, G., Domingo-Pardo, C., Foucher, J.L., Fremont, G., Gadea, A., Gangnant, P., González, V., Goupil, J., Henrich, C., Houarner, C., Jean, M., Judson, D.S., Korichi, A., Korten, W., Labiche, M., Lefevre, A., Legeard, L., Legruel, F., Leoni, S., Ljungvall, J., Maj, A., Maugeais, C., Ménager, L., Ménard, N., Menegazzo, R., Mengoni, D., Million, B., Munoz, H., Napoli, D.R., Navin, A., Nyberg, J., Ozille, M., Podolyak, Zs., Pullia, A., Raine, B., Recchia, F., Ropert, J., Saillant, F., Salsac, M.D., Sanchis, E., Schmitt, C., Simpson, J., Spitaels, C., Stezowski, O., Theisen, Ch., Toulemonde, M., Tripon, M., Valiente Dobón, J.J., Voltolini, G., Zielińska, M., Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut Laue-Langevin (ILL), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), AGATA, ILL, Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Nuclear Physics - Experiment, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Nuclear Structure
Abstract

International audience; Lifetimes of the excited states in the neutron-rich Ti52,54 nuclei, produced in a multinucleon-transfer reaction, were measured by employing the Cologne plunger device and the recoil-distance Doppler-shift method. The experiment was performed at the Grand Accélérateur National d'Ions Lourds facility by using the Advanced Gamma Tracking Array for the γ-ray detection, coupled to the large-acceptance variable mode spectrometer for an event-by-event particle identification. A comparison between the transition probabilities obtained from the measured lifetimes of the 21+ to 81+ yrast states in Ti52,54 and that from the shell-model calculations based on the well-established GXPF1A, GXPF1B, and KB3G fp shell interactions support the N=32 subshell closure. The B(E2) values for Ti52 determined in this work are in disagreement with the known data, but are consistent with the predictions of the shell-model calculations and reduce the previously observed pronounced staggering across the even-even titanium isotopes.

Published
2019
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141. Search formixed-symmetry states of nuclei in the vicinity of the double-magic nucleus 208Pb

Author

Wölk, D., Bauer, C., Scheck, M., Thöle, P., Zhu, S., Möller, T., Petkov, P., Hennig, A., Werner, V., Scholz, P., Van Isacker, P., Janssens, R.V.F., Karayonchev, V., Braunroth, T., Pietralla, N., Gladnishki, K., Dewald, A., Müller-Gatermann, C., Carpenter, M.P., Djongolov, M., Cortes, L., Stahl, C., Blazhev, A., Kocheva, D., Lettmann, M., Rainovski, G., Lister, C.J., Fransen, C., Stegmann, R., Jolie, J., Schramm, C., and Litzinger, J.

Abstract

In this work we present the results from two experiments dedicated to search for quadrupolecollective isovector valence-shell excitation, the states with so-called mixed proton-neutron symmetry (MSS), in nuclei around the doubly magic nucleus 208Pb. 212Po was studied in an α-transfer reaction. 204Hg was studied in an inverse kinematics Coulomb excitation reaction on a carbon target. Both experiments provide indications for existence of one-phonon MSSs. Those are the first experimentally identified MSSs in the mass A ≈ 208 region.

Published
2016
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142. Cross-shell excitations from the fp shell: Lifetime measurements in Zn61

Author

Queiser, M., primary, Vogt, A., additional, Seidlitz, M., additional, Reiter, P., additional, Togashi, T., additional, Shimizu, N., additional, Utsuno, Y., additional, Otsuka, T., additional, Honma, M., additional, Petkov, P., additional, Arnswald, K., additional, Altenkirch, R., additional, Birkenbach, B., additional, Blazhev, A., additional, Braunroth, T., additional, Dewald, A., additional, Eberth, J., additional, Fransen, C., additional, Fu, B., additional, Hess, H., additional, Hetzenegger, R., additional, Hirsch, R., additional, Jolie, J., additional, Karayonchev, V., additional, Kaya, L., additional, Lewandowski, L., additional, Müller-Gatermann, C., additional, Régis, J.-M., additional, Rosiak, D., additional, Schneiders, D., additional, Siebeck, B., additional, Steinbach, T., additional, Wolf, K., additional, and Zell, K.-O., additional

Published
2017
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143. Low collectivity of the 21+ state of Po212

Author

Kocheva, D., primary, Rainovski, G., additional, Jolie, J., additional, Pietralla, N., additional, Blazhev, A., additional, Altenkirch, R., additional, Ansari, S., additional, Astier, A., additional, Bast, M., additional, Beckers, M., additional, Braunroth, Th., additional, Cappellazzo, M., additional, Dewald, A., additional, Diel, F., additional, Djongolov, M., additional, Fransen, C., additional, Gladnishki, K., additional, Goldkuhle, A., additional, Hennig, A., additional, Karayonchev, V., additional, Keatings, J. M., additional, Kluge, E., additional, Kröll, Th., additional, Litzinger, J., additional, Moschner, K., additional, Müller-Gatermann, C., additional, Petkov, P., additional, Scheck, M., additional, Scholz, Ph., additional, Schmidt, T., additional, Spagnoletti, P., additional, Stahl, C., additional, Stegmann, R., additional, Stolz, A., additional, Vogt, A., additional, Warr, N., additional, Werner, V., additional, Wölk, D., additional, Zamora, J. C., additional, Zell, K. O., additional, Ponomarev, V. Yu., additional, and Van Isacker, P., additional

Published
2017
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146. Radiocarbon measurements of small gaseous samples at CologneAMS

Author

Stolz, A., primary, Dewald, A., additional, Altenkirch, R., additional, Herb, S., additional, Heinze, S., additional, Schiffer, M., additional, Feuerstein, C., additional, Müller-Gatermann, C., additional, Wotte, A., additional, Rethemeyer, J., additional, and Dunai, T., additional

Published
2017
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147. A revised B(E2;2+ 1 $ \rightarrow$ → 0+ 1) value in the semi-magic nucleus 210Po

Author

Kocheva, D., primary, Rainovski, G., additional, Jolie, J., additional, Pietralla, N., additional, Blazhev, A., additional, Astier, A., additional, Altenkirch, R., additional, Ansari, S., additional, Braunroth, Th., additional, Cortés, M. L., additional, Dewald, A., additional, Diel, F., additional, Djongolov, M., additional, Fransen, C., additional, Gladnishki, K., additional, Hennig, A., additional, Karayonchev, V., additional, Keatings, J. M., additional, Kluge, E., additional, Litzinger, J., additional, Müller-Gatermann, C., additional, Petkov, P., additional, Rudigier, M., additional, Scheck, M., additional, Scholz, Ph., additional, Spagnoletti, P., additional, Spieker, M., additional, Stahl, C., additional, Stegmann, R., additional, Stoyanova, M., additional, Thöle, P., additional, Warr, N., additional, Werner, V., additional, Witt, W., additional, Wölk, D., additional, Zell, K. O., additional, Van Isacker, P., additional, and Ponomarev, V. Yu., additional

Published
2017
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148. Enhanced collectivity along the N = Z line: Lifetime measurements in 44 Ti, 48 Cr, and 52 Fe

Author

Arnswald, K., primary, Braunroth, T., additional, Seidlitz, M., additional, Coraggio, L., additional, Reiter, P., additional, Birkenbach, B., additional, Blazhev, A., additional, Dewald, A., additional, Fransen, C., additional, Fu, B., additional, Gargano, A., additional, Hess, H., additional, Hirsch, R., additional, Itaco, N., additional, Lenzi, S.M., additional, Lewandowski, L., additional, Litzinger, J., additional, Müller-Gatermann, C., additional, Queiser, M., additional, Rosiak, D., additional, Schneiders, D., additional, Siebeck, B., additional, Steinbach, T., additional, Vogt, A., additional, Wolf, K., additional, and Zell, K.O., additional

Published
2017
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149. Toward lifetime andgfactor measurements of short-lived states in the vicinity of208Pb

Author

Ralet, D, primary, Georgiev, G, additional, Stuchbery, A E, additional, Clément, E, additional, Lemasson, A, additional, Michelagnoli, C, additional, Rejmund, M, additional, Atanasova, L, additional, Balabanski, D L, additional, Bocchi, G, additional, Carroll, R, additional, Dewald, A, additional, Dudouet, J, additional, Fornal, B, additional, France, G de, additional, Franchoo, S, additional, Fransen, C, additional, Müller-Gatermann, C, additional, Goasduff, A, additional, Gadea, A, additional, Jacquot, B, additional, John, P R, additional, Kocheva, D, additional, Konstantinopoulos, T, additional, Korichi, A, additional, Kusoglu, A, additional, Lenzi, S M, additional, Leoni, S, additional, Ljungvall, J, additional, Lozeva, R, additional, Maj, A, additional, Navin, A, additional, Perez, R, additional, Pietralla, N, additional, Shand, C, additional, Stezowski, O, additional, and Yordanov, D, additional

Published
2017
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150. Evolution of collectivity in the N=100 isotones near Yb170

Author

Karayonchev, V., primary, Régis, J.-M., additional, Jolie, J., additional, Blazhev, A., additional, Altenkirch, R., additional, Ansari, S., additional, Dannhoff, M., additional, Diel, F., additional, Esmaylzadeh, A., additional, Fransen, C., additional, Gerst, R.-B., additional, Moschner, K., additional, Müller-Gatermann, C., additional, Saed-Samii, N., additional, Stegemann, S., additional, Warr, N., additional, and Zell, K. O., additional

Published
2017
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