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132 results on '"Nenoff, N."'

1. Observation of the lowest energy gamma-ray in any superdeformed nucleus : 196Bi

Author

Prevost, A., Rosse, B., Meyer, M., Redon, N., Schmitt, C., Stezowski, O., Lautesse, P., Astier, A., Deloncle, I., Porquet, M. -G., Duguet, T., Hubel, H., Mergel, E., Rossbach, D., Nenoff, N., Schonwasser, G., Curien, D., Duchene, G., Gall, B. J. P., Robin, J., and Vivien, J. P.

Subjects
Nuclear Experiment
Abstract

New results on the superdeformed $^{196}$Bi nucleus a re reported. We have observed with the EUROBALL IV $\gamma$-ray spectrometer array a superdeformed trans ition of 124 keV which is the lowest observed energy $\gamma$-ray in any superdeformed nucleus. We have de velopped microscopic cranked Hartree-Fock-Bogoliubov calculations using the SLy4 effective force and a realistic surface p airing which strongly support the $K^\pi=2^-$($\pi$[651]1/2$\otimes \nu$[752]5/2) assignment of this su perdeformed band.

Published
2004

2. Quadrupole moments of high-spin isomers: test of the tilted-axis cranking model

Author

Balabanski, D. L., Vyvey, K., Neyens, G., Almehed, D., Blaha, P., Borremans, D., Chmel, S., Coulier, N., Coussement, R., De Clercq, W., Frauendorf, S., Georgiev, G., Hubel, H., Lepine-Szily, A., Mineva, M., Nenoff, N., Pancholi, S., Rossbach, D., Schwengner, R., Teughels, S., and Walker, P. M.

Subjects
Nuclear Experiment
Abstract

We report the results of recent measurements of the spectroscopic quadrupole moments of high-spin isomers. For the K=35/2- five-quasiparticle isomer in 179W we measured Q_s=4.00(+0.83)(-1.06)eb. It corresponds to a smaller deformation compared to the ground states of the W isotopes and is in disagreement with the current theoretical predictions. We also measured the quadrupole moment of the I=11- isomer in 196Pb, Q_s=(-)3.41(66)eb. It has the same proton s(-2)1/2 h9/2 i13/2 configuration as the one suggested for the I=16- magnetic bandhead which allows to deduce the quadrupole moment of the 16- state as Q_s=-0.316(97)eb. This small value proves the near sphericity of the bandhead., Comment: Contributed paper at "High Spin Physics 2001", see http://www.fuw.edu.pl/~hs2001/, to be published in Acta Physica Polonica B

Published
2001

3. Evolution from spherical single-particle structure to stable triaxiality at high spins in Nd140

Author

Petrache, CM, Fantuzi, M, LoBianco, G, Mengoni, D, Neusser-Neffgen, A, Hübel, H, Al-Khatib, A, Bringel, P, Bürger, A, Nenoff, N, Schönwasser, G, Singh, AK, Ragnarsson, I, Hagemann, GB, Herskind, B, Jensen, DR, Sletten, G, Fallon, P, Görgen, A, Bednarczyk, P, Curien, D, Gangopadhyay, G, Korichi, A, Lopez-Martens, A, Rao, BVT, Reddy, TS, and Singh, Nirmal

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Nuclear and plasma physics
Abstract

The level structure of 60140Nd80 has been established up to spin 48 by in-beam γ-ray spectroscopy by use of the Zr96(Ca48, 4n) reaction. High-fold γ-ray coincidences were measured with the EUROBALL spectrometer. Twelve new rotational bands have been discovered at high spins. They are interpreted as being formed in a deep triaxial minimum at 2 0.25 and γ 35°. Possible configurations are assigned to the observed bands on the basis of configuration-dependent cranked Nilsson-Strutinsky calculations. © 2005 The American Physical Society.

Published
2005

4. Shape evolution and magnetic rotation in 141Nd

Author

Zerrouki, T., Petrache, C. M., Leguillon, R., Hauschild, K., Korichi, A., Lopez-Martens, A., Frauendorf, S., Ragnarsson, I., Hübel, H., Neußer-Neffgen, A., Al-Khatib, A., Bringel, P., Bürger, A., Nenoff, N., Schönwaßer, G., Singh, A. K., Curien, D., Hagemann, G. B., Herskind, B., Sletten, G., Fallon, P., Görgen, A., and Bednarczyk, P.

Published
2015
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6. Evidence for wobbling excitation in 161Lu

Author

Bringel, P., Hagemann, G. B., Hübel, H., Al-khatib, A., Bednarczyk, P., Bürger, A., Curien, D., Gangopadhyay, G., Herskind, B., Jensen, D. R., Joss, D. T., Kröll, Th., Lo Bianco, G., Lunardi, S., Ma, W. C., Nenoff, N., Neußer-Neffgen, A., Petrache, C. M., Schönwasser, G., Simpson, J., Singh, A. K., Singh, N., and Sletten, G.

Published
2005
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8. Gamma-ray feeding and decay of superdeformed states

Author

Lopez-Martens, A., Døssing, T., Khoo, T. L., Herskind, B., Lauristen, T., Matsuo, M., Yoshida, K., Korichi, A., Hannachi, F., Ahmad, I., Amro, H., de Angelis, G., Bazzacco, D., Beausang, C., Bouchez, E., Bringel, P., Calderin, I. J., Carpenter, M. P., Fischer, S. M., Hackman, G., Hauschild, K., Hübel, H., Hurstel, A., Janssens, R. V. F., Kondev, F. G., Korten, W., Kröll, T., Le Coz, Y., Marginean, N., Menegazzo, R., Mergel, E., Napoli, D., Nenoff, N., Neumann, S., Neusser, A., Nisius, D., Mukherjee, G., Rejmund, M., Rossbach, D., Rossi Alvarez, C., Schück, C., Schonwasser, G., Singh, A. K., Theisen, Ch, Vieu, Ch, and Ur, C.

Published
2003
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9. Candidates for chiral doublet bands in 136Nd

Author

Mergel, E., Petrache, C.M., Lo Bianco, G., Hübel, H., Domscheit, J., Roßbach, D., Schönwaßer, G., Nenoff, N., Neußer, A., Görgen, A., Becker, F., Bouchez, E., Houry, M., Hürstel, A., Le Coz, Y., Lucas, R., Theisen, Ch., Korten, W., Bracco, A., Blasi, N., Camera, F., Leoni, S., Hannachi, F., Lopez-Martens, A., Rejmund, M., Gassmann, D., Reiter, P., Thirolf, P.G., Astier, A., Buforn, N., Meyer, M., Redon, N., and Stezowski, O.

Published
2002
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10. New excited superdeformed bands in heavy Pb nuclei: Clue for an octupole softness near the N = 118 gap at large deformation

Author

Prévost, A., Buforn, N., Astier, A., Duffait, R., Meyer, M., Perriès, S., Redon, N., Stézowski, O., Bauchet, A., Deloncle, I., Porquet, M.G., Görgen, A., Hübel, H., Mergel, E., Neumann, S., Roßbach, D., Nenoff, N., Schönwaßer, G., Wilson, A.N., Lucas, R., Beck, F.A., Curien, D., Duchêne, G., Gall, B.J.P., Kintz, N., Vivien, J.P., and Cullen, D.M.

Published
2001
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11. Magnetic properties of the υj15/2 intruder orbital in the superdeformed minimum of 197Pb

Author

Buforn, N., Astier, A., Duffait, R., Meyer, M., Perriès, S., Prévost, A., Redon, N., Stézowski, O., Goergen, A., Hübel, H., Mergel, E., Neumann, S., Rossbach, D., Nenoff, N., Schoenwasser, G., Bauchet, A., Deloncle, I., Porquet, M.G., Wilson, A.N., Lucas, R., Beck, F.A., Curien, D., Duchêne, G., Gall, B.J.P., Kintz, N., Vivien, J.P., and Cullen, D.M.

Published
2000
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14. First triaxial superdeformed band in 170Hf

Author

Neußer, A., Hübel, H., Hagemann, G.B., Bhattacharya, S., Bringel, P., Curien, D., Dorvaux, O., Domscheit, J., Hannachi, F., Jensen, D.R., Lopez-Martens, A., Mergel, E., Nenoff, N., and Singh, A.K.

Published
2002
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18. Superdeformed nuclear matter in nuclei with $Z \ge 82$: Magnetic properties and neutron shell gap

Author

Redon, N., Buforn, N., Duffait, R., Lautesse, P., Meyer, M., Prévost, A., Stézowski, O., Astier, A., Bauchet, A., Deloncle, I., Porquet, M. G., Domscheit, J., Goergen, A., Hübel, H., Mergel, E., Neumann, S., Rossbach, D., Nenoff, N., Schoenwasser, G., Wilson, A. N., Lucas, R., Beck, F. A., Bednardcyk, P., Curien, D., Duchêne, G., Dorvaux, O., Gall, B. J. P., Kintz, N., Vivien, J. P., and Cullen, D. M.

Published
2003
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19. Shape evolution and magnetic rotation in Nd-141

Author

Zerrouki, T., Petrache, C.M., Leguillon, R., Hauschild, K., Korichi, A., Lopez-Martens, A., Frauendorf, S., Ragnarsson, I., Hubel, H., Neusser-Neffgen, A., Al-Khatib, A., Bringel, P., Burger, A., Nenoff, N., Schonwasser, G., Singh, A.K., Curien, D., Hagemann, G.B., Herskind, B., Sletten, G., Fallon, P., Gorgen, A., Bednarczyk, P., CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (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)-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)-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), Institut de Physique Nucléaire d'Orsay (IPNO), Laboratoire de Chimie - UMR5182 (LC), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon)-Institut de Chimie du CNRS (INC), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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)-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)-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), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), 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)-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
EXCITATIONS, [PHYS]Physics [physics], NUCLEI, HIGH-SPIN, Nuclear Theory, COLLECTIVITY, BANDS, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], EUROBALL, COINCIDENCE DATA SETS
Abstract

International audience; The high-spin states in Nd-141 were investigated using the Zr-96(Ca-48, 3n) reaction and the EU-ROBALL array. The level scheme has been extended up to an excitation energy of around 16MeV and spin 81/2. Two new bands of dipole transitions and three bands presumably of quadrupole transitions were identified and their connections to low-lying states were established. Cranked Nilsson-Strutinsky and tilted axis cranking calculations are combined in the interpretation of the observed dipole bands. The high-spin bands with assigned quadrupole transitions are interpreted as triaxial bands, while the dipole bands appear in the calculations to exhibit a shape evolution from low-deformation triaxial to spherical shape. They can be classified as magnetic rotation, with transition probabilities that show the characteristic decrease with angular momentum caused by the shears mechanism.

Published
2015
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23. Normal and superdeformed high-spin structures in $^{161}$Lu

Author

Bringel, P., Hübel, H., Al-Khatib, A., Bürger, A., Nenoff, N., Neußer-Neffgen, A., Schönwasser, G., K. Singh, A., Hagemann, G.B., Herskind, B., Jensen, D.R., Sletten, G., Bednarczyk, P., Curien, D., Joss, D.T., Simpson, J., Gangopadhyay, G., Kroll, T., Lo Bianco, G., Petrache, C.M., Lunardi, S., Ma, W.C., Singh, N., Département Recherches Subatomiques (DRS-IPHC), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear Theory, 21.10.-k, 23.20.Lv, 25.70.-z, 27.70.+q, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

High-spin states in 161Lu were populated in the 139La(28Si, 6n) reaction and gamma-ray coincidences were measured with the EUROBALL spectrometer. On the basis of these data, the previously known level scheme is extended with new band structures and is partly revised. Configuration assignments are made to all bands based on comparison of experimental properties with cranked shell model calculations. A strongly populated band with parity and signature (pi,alpha)=(+,-1/2) is found to be yrast above spin I~=33. This band shows characteristics resembling those of two triaxial superdeformed bands in this nucleus based on the occupation of the shape-driving i13/2 proton orbital. This structure, unique to 161Lu within the chain of even-N Lu isotopes, is discussed in terms of a quasiparticle configuration in a local triaxial minimum with a larger triaxiality and a smaller quadrupole deformation than calculated for the i13/2 proton excitation.

Published
2006
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24. Triaxial superdeformed and normal-deformed high-spin band structures in 170Hf

Author

Neußer-Neffgen, A., Hübel, H., Bringel, P., Domscheit, J., Mergel, E., Nenoff, N., K. Singh, A., B. Hagemann, G., R. Jensen, D., Bhattacharya, S., Curien, D., Dorvaux, O., Hannachi, F., Lopez-Martens, A., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (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), and 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)

Subjects
nuclear spin, high spin states, nuclear superdeformed states, Nuclear Theory, nuclear energy level transitions, nuclei with mass number 150 to 189, deformed nuclei, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 21.10.Re, 23.20.Lv, 25.70.-z, 27.70.+q, nuclear shape
Abstract

The high-spin structure of 170Hf was investigated using the EUROBALL spectrometer. The previously known level scheme was extended in the low-spin region as well as to higher spins, and several new bands were discovered. In particular, two bands were identified which show the characteristics of triaxial superdeformation. One of these bands is strongly populated, and its excitation energy and spins are established. Configuration assignments are made to the normal-deformed bands based on comparisons of their properties with cranked shell model calculations. The results for the very high spin states provide important input for such calculations.

Published
2006
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25. Evolution from spherical single-particle structure to stable triaxiality at high spins in $^{140}$Nd

Author

M. Petrache, C., Fantuzi, M., Lobianco, G., Mengoni, D., Neusser-Neffgen, A., Hubel, H., Al-Khatib, A., Bringel, P., Burger, A., Nenoff, N., Schonwasser, G., K. Singh, A., Ragnarsson, I., B. Hagemann, G., Herskind, B., R. Jensen, D., Sletten, G., Fallon, P., Gorgen, A., Bednarczyk, P., Curien, D., Gangopadhyay, G., Korichi, A., Lopez-Martens, A., V. T. Rao, B., S. Reddy, T., Singh, Nirmal, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (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), and 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)

Subjects
nuclei with mass number 90 to 149, high spin states, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, nuclear energy level transitions, nuclear energy levels, heavy ion-nucleus reactions, gamma-ray spectra, 21.10.Re, 21.60.Ev, 23.20.Lv, 27.60.+j, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nuclear cranking model, nuclear rotational states
Abstract

The level structure of $^{140}_{60}$Nd80 has been established up to spin 48 by in-beam $\gamma$-ray spectroscopy by use of the $^{96}$Zr($^{48}$Ca, 4n) reaction. High-fold $\gamma$-ray coincidences were measured with the EUROBALL spectrometer. Twelve new rotational bands have been discovered at high spins. They are interpreted as being formed in a deep triaxial minimum at $\epsilon_{2}\approx0.25$ and $\gamma \approx 35°$. Possible configurations are assigned to the observed bands on the basis of configuration-dependent cranked Nilsson-Strutinsky calculations.

Published
2005
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26. Superdeformed band at very high spin in $^{140}$Nd

Author

Neusser, A., Hübel, H., Al-Khatib, A., Bringel, P., Bürger, A., Nenoff, N., Schönwasser, G., Singh, A.K., Petrache, C.M., Lo Bianco, G., Ragnarsson, I., Hagemann, G.B., Herskind, B., Jensen, D.R., Sletten, G., Fallon A. Görgen, P., Bednarczyk, P., Curien, D., Gangopadhyay, G., Korichi, A., Lopez-Martens, A., Rao, B.V.T., Reddy, T.S., Singh, N., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
21.10.Re, 21.60.Ev, 23.20.Lv, 27.60.+j, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2004
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27. Superdeformed Nuclear Matter in Nuclei with Z $\leq$ 82 magnetic properties and neutron shell gap

Author

Redon, N., Buforn, N., Duffait, R., Lautesse, P., Meyer, M., Prévost, A., Stézowski, O., Astier, A., Bauchet, A., Deloncle, I., Porquet, M. G., Domscheit, J., Goergen, A., Huebel, H., Mergel, E., Neumann, S., Rossbach, D., Nenoff, N., Schoenwasser, G., Wilson, A. N., Lucas, R., Beck, F. A., Bednardcyk, P., Dominique Curien, Duchene, G., Dorvaux, O., Gall, B. J. P., Kintz, N., Vivien, J. P., Cullen, D. M., 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), and Flores, Sylvie

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

Pas de résumé

Published
2002

28. High-spin spectroscopy of 140Nd

Author

Leguillon, R., Petrache, C. M., Zerrouki, T., Konstantinopoulos, T., Hauschild, K., Korichi, A., Lopez-Martens, A., Frauendorf, S., Ragnarsson, I., Greenlees, P. T., Jakobsson, U., Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Nieminen, P., Nyman, M., Peura, P., Rahkila, P., Ruotsalainen, P., Sandzelius, M., Saren, J., Scholey, C., Sorri, J., Uusitalo, J., Huebel, H., Neusser-Neffgen, A., Al-Khatib, A., Buerger, A., Nenoff, N., Singh, A. K., Curien, D., Hagemann, G. B., Herskind, B., Sletten, G., Fallon, P., Goergen, A., Bednarczyk, P., Cullen, D. M., Leguillon, R., Petrache, C. M., Zerrouki, T., Konstantinopoulos, T., Hauschild, K., Korichi, A., Lopez-Martens, A., Frauendorf, S., Ragnarsson, I., Greenlees, P. T., Jakobsson, U., Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Nieminen, P., Nyman, M., Peura, P., Rahkila, P., Ruotsalainen, P., Sandzelius, M., Saren, J., Scholey, C., Sorri, J., Uusitalo, J., Huebel, H., Neusser-Neffgen, A., Al-Khatib, A., Buerger, A., Nenoff, N., Singh, A. K., Curien, D., Hagemann, G. B., Herskind, B., Sletten, G., Fallon, P., Goergen, A., Bednarczyk, P., and Cullen, D. M.

Published
2013

29. Spectroscopy of the $^{197,198}$Pb superdeformed nuclei with EUROBALL IV

Author

Buforn, N., Prévost, A., Astier, A., Duffait, R., Meyer, M., Perriès, S., Redon, N., Stézowski, O., Domscheit, J., Goergen, A., Huebel, H., Mergel, E., Neumann, S., Rossbach, D., Nenoff, N., Schoenwasser, G., Bauchet, A., Deloncle, I., Porquet, M. G., Wilson, A. N., Lucas, R., Beck, F. A., Dominique Curien, Duchene, G., Gall, B. J. P., Kintz, N., Vivien, J. P., Cullen, D. N., 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), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-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)-Centre National de la Recherche Scientifique (CNRS), and Flores, Sylvie

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

Matière Nucléaire

Published
2000

30. High-spin spectroscopy of140Nd

Author

Leguillon, R., primary, Petrache, C. M., additional, Zerrouki, T., additional, Konstantinopoulos, T., additional, Hauschild, K., additional, Korichi, A., additional, Lopez-Martens, A., additional, Frauendorf, S., additional, Ragnarsson, I., additional, Greenlees, P. T., additional, Jakobsson, U., additional, Jones, P., additional, Julin, R., additional, Juutinen, S., additional, Ketelhut, S., additional, Leino, M., additional, Nieminen, P., additional, Nyman, M., additional, Peura, P., additional, Rahkila, P., additional, Ruotsalainen, P., additional, Sandzelius, M., additional, Saren, J., additional, Scholey, C., additional, Sorri, J., additional, Uusitalo, J., additional, Hübel, H., additional, Neußer-Neffgen, A., additional, Al-Khatib, A., additional, Bürger, A., additional, Nenoff, N., additional, Singh, A. K., additional, Curien, D., additional, Hagemann, G. B., additional, Herskind, B., additional, Sletten, G., additional, Fallon, P., additional, Görgen, A., additional, Bednarczyk, P., additional, and Cullen, D. M., additional

Published
2013
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31. Triaxiality at high spins in Nd nuclei

Author

Petrache, C. M., Neusser-Neffgen, A., Huebel, H., Al-Khatib, A., Bringel, P., Buerger, A., Nenoff, N., Schoenwasser, G., Singh, A. K., Fantuzi, M., Mengoni, D., Hagemann, G. B., Herskind, B., Jensen, D. R., Sletten, G., Fallon, P., Gorgen, A., Bednarczyk, P., Curien, D., Gangopadhyay, G., Korichi, A., Lopez-Martens, A., Rao, B. V. T., Reddy, T. S., Singh, Nirmal, Ragnarsson, I., Petrache, C. M., Neusser-Neffgen, A., Huebel, H., Al-Khatib, A., Bringel, P., Buerger, A., Nenoff, N., Schoenwasser, G., Singh, A. K., Fantuzi, M., Mengoni, D., Hagemann, G. B., Herskind, B., Jensen, D. R., Sletten, G., Fallon, P., Gorgen, A., Bednarczyk, P., Curien, D., Gangopadhyay, G., Korichi, A., Lopez-Martens, A., Rao, B. V. T., Reddy, T. S., Singh, Nirmal, and Ragnarsson, I.

Published
2006

32. Superdeformed nuclear matter in nuclei with Z >=82: Magntic properties and neutron shell gap

Author

Wilson, Anna, Redon, Nadine, Buforn, N, Meyer, M, Stezowski, O, Astier, A, Porquet, M G, Goergen, A, Hubel, H, Robbach, D, Nenoff, N, Lucas, R, Beck, Friedrich, Gall, B. J. P, Kintz, N, Cullen, D. M, Wilson, Anna, Redon, Nadine, Buforn, N, Meyer, M, Stezowski, O, Astier, A, Porquet, M G, Goergen, A, Hubel, H, Robbach, D, Nenoff, N, Lucas, R, Beck, Friedrich, Gall, B. J. P, Kintz, N, and Cullen, D. M

Abstract

We report the results of an experiment, realized with the EUROBALL IV spectrometer, in which superdeformed (SD) states have been populated in 197,198Pb nuclei. Crosstalk transitions between two signature partner SD bands in 197pb have been observed with an established M1 character, giving access to the magnetic properties of the v[752]5/2 intruder orbital. Six new SD bands have been identified in 197,198Pb. The results are interpreted in the framework of cranked Hartree-Fock calculations. A mixing between quasi-particle excitations and an octupole vibration is suggested in the two SD isotopes.

Published
2004

34. Development of collective structures over noncollective excitations in139Nd

Author

Bhowal, S., primary, Gangopadhyay, G., additional, Petrache, C. M., additional, Ragnarsson, I., additional, Singh, A. K., additional, Bhattacharya, S., additional, Hübel, H., additional, Neußer-Neffgen, A., additional, Al-Khatib, A., additional, Bringel, P., additional, Bürger, A., additional, Nenoff, N., additional, Schönwaßer, G., additional, Hagemann, G. B., additional, Herskind, B., additional, Jensen, D. R., additional, Sletten, G., additional, Fallon, P., additional, Görgen, A., additional, Bednarczyk, P., additional, Curien, D., additional, Korichi, A., additional, Lopez-Martens, A., additional, Rao, B. V. T., additional, Reddy, T. S., additional, and Singh, Nirmal, additional

Published
2011
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35. Detailed study of magnetic rotation in (196)pb

Author

Singh, A. K., Nenoff, N., Rossbach, D., Gorgen, A., Chmel, S., Cederwall, Bo, et al, Singh, A. K., Nenoff, N., Rossbach, D., Gorgen, A., Chmel, S., Cederwall, Bo, and et al

Abstract

High-spin states in Pb-196 have been populated in two different heavy-ion-induced reactions using thin and Au-backed targets, respectively. Gamma-ray coincidences were measured using the EUROBALL spectrometer array. Five new magnetic-rotational bands have been found. The previously known four bands have been extended and some of their levels have been reordered. With one exception, all the bands have been connected to lower-lying states and excitation energies, spins and parities have been determined. From the systematic properties of the bands and from comparison to tilted-axis cranking calculations, arguments for configuration assignments to the bands are derived. It is suggested that the bands are based on proton 11(-) and 8(+) particle states coupled to various neutron-hole excitations., QC 20100525

Published
2002
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36. Quadrupole Moment of the 11- Intruder Isomer in 196Pb and Its Implications for the 16- Shears Band Head

Author

Vyvey, K., Chmel, S., Neyens, G., Hübel, H., Balabanski, D. L., Borremans, D., Coulier, N., Coussement, R., Georgiev, G., Nenoff, N., Pancholi, S., Rossbach, D., Schwengner, R., Teughels, S., Frauendorf, S., Vyvey, K., Chmel, S., Neyens, G., Hübel, H., Balabanski, D. L., Borremans, D., Coulier, N., Coussement, R., Georgiev, G., Nenoff, N., Pancholi, S., Rossbach, D., Schwengner, R., Teughels, S., and Frauendorf, S.

Abstract

The quadrupole moment of the 11- isomer in 196Pb has been measured by the level mixing spectroscopy method. This state has a pi (3s_1/2^-2 1h_9/2 1i_13/2)11- configuration which is involved in most of the shears band heads in the Pb region. The first directly measured value of Qs(11-) = (-) 3.41(66) b, coupled to the previously known quadrupole moment of the nu (1i_13/2 )12+ isomer allows us to estimate the quadrupole moment of the 16- shears band head as Qs(16-) = -0.32(10) b. The experimental values are compared to tilted axis cranking calculations, giving insight into the validity of the additivity approach to couple quadrupole moments and on the amount of deformation in the shears bands.

Published
2002

37. Magnetic rotation in 197 Pb and 198 Pb

Author

Gorgen, A, Nenoff, N, Hubel, H, Baldsiefen, G., Becker, J A, Byrne, Aidan, Chmel, S., Clark, Robert Graham, Deleplanque, M.A., Diamond, R.M., Fallon, P, Hauschild, K, Hibbert, I., Korten, W, Krucken, R, Lee, I-Y, Macchiavelli, A O, Paul, E, van Severen, U J, Stephens, F S, Vetter, K, Wadsworth, R, Wilson, Anna, Wilson, J N, Gorgen, A, Nenoff, N, Hubel, H, Baldsiefen, G., Becker, J A, Byrne, Aidan, Chmel, S., Clark, Robert Graham, Deleplanque, M.A., Diamond, R.M., Fallon, P, Hauschild, K, Hibbert, I., Korten, W, Krucken, R, Lee, I-Y, Macchiavelli, A O, Paul, E, van Severen, U J, Stephens, F S, Vetter, K, Wadsworth, R, Wilson, Anna, and Wilson, J N

Published
2001

38. Superdeformed band at very high spin in Nd140

Author

Neußer, A., primary, Hübel, H., additional, Al-Khatib, A., additional, Bringel, P., additional, Bürger, A., additional, Nenoff, N., additional, Schönwaßer, G., additional, Singh, A., additional, Petrache, C., additional, Bianco, G., additional, Ragnarsson, I., additional, Hagemann, G., additional, Herskind, B., additional, Jensen, D., additional, Sletten, G., additional, Fallon, P., additional, Görgen, A., additional, Bednarczyk, P., additional, Curien, D., additional, Gangopadhyay, G., additional, Korichi, A., additional, Lopez-Martens, A., additional, Rao, B., additional, Reddy, T., additional, and Singh, Nirmal, additional

Published
2004
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39. Coexisting normal and triaxial superdeformed structures in 165Lu

Author

Schönwaßer, G., primary, Nenoff, N., additional, Hübel, H., additional, Hagemann, G.B., additional, Bednarczyk, P., additional, Benzoni, G., additional, Bracco, A., additional, Bringel, P., additional, Chapman, R., additional, Curien, D., additional, Domscheit, J., additional, Herskind, B., additional, Jensen, D.R., additional, Leoni, S., additional, Lo Bianco, G., additional, Ma, W.C., additional, Maj, A., additional, Neußer, A., additional, Ødegård, S.W., additional, Petrache, C.M., additional, Roßbach, D., additional, Ryde, H., additional, Singh, A.K., additional, and Spohr, K.H., additional

Published
2004
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41. Detailed study of magnetic rotation in 196Pb

Author

Singh, A.K., primary, Nenoff, N., additional, Roßbach, D., additional, Görgen, A., additional, Chmel, S., additional, Azaiez, F., additional, Astier, A., additional, Bazzacco, D., additional, Belleguic, M., additional, Bouneau, S., additional, Bourgeois, C., additional, Buforn, N., additional, Cederwall, B., additional, Deloncle, I., additional, Domscheit, J., additional, Hannachi, F., additional, Hauschild, K., additional, Hübel, H., additional, Korichi, A., additional, Korten, W., additional, Kröll, T., additional, LeCoz, Y., additional, Lopez-Martens, A., additional, Lucas, R., additional, Lunardi, S., additional, Maier, H.J., additional, Mergel, E., additional, Meyer, M., additional, Petrache, C.M., additional, Redon, N., additional, Reiter, P., additional, Rossi-Alvarez, C., additional, Schönwaßer, G., additional, Stezowski, O., additional, Thirolf, P.G., additional, and Wilson, A.N., additional

Published
2002
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42. Quadrupole moments of the 11− intruder isomers in 194,196Pb in the particle-core coupling model

Author

Vyvey, K, primary, Oros-Peusquens, A.M, additional, Neyens, G, additional, Balabanski, D.L, additional, Borremans, D, additional, Chmel, S, additional, Coulier, N, additional, Coussement, R, additional, Georgiev, G, additional, Hübel, H, additional, Nenoff, N, additional, Rossbach, D, additional, Teughels, S, additional, and Heyde, K, additional

Published
2002
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43. Quadrupole Moment of the11−Intruder Isomer inP196band Its Implications for the16−Shears Band Head

Author

Vyvey, K., primary, Chmel, S., additional, Neyens, G., additional, Hübel, H., additional, Balabanski, D. L., additional, Borremans, D., additional, Coulier, N., additional, Coussement, R., additional, Georgiev, G., additional, Nenoff, N., additional, Pancholi, S., additional, Rossbach, D., additional, Schwengner, R., additional, Teughels, S., additional, and Frauendorf, S., additional

Published
2002
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44. Quadrupole moments of the 11[sup −] intruder isomers in [sup 194,196]Pb

Author

Vyvey, K., primary, Neyens, G., additional, Balabanski, D. L., additional, Borremans, D., additional, Chmel, S., additional, Coulier, N., additional, Coussement, R., additional, De Clercq, W., additional, Frauendorf, S., additional, Georgiev, G., additional, Hübel, H., additional, Nenoff, N., additional, Oros, A. M., additional, Pancholi, S., additional, Rossbach, D., additional, Schwengner, R., additional, Teughels, S., additional, and Heyde, K., additional

Published
2002
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45. Magnetic Rotation In 196Pb.

Author

Hübel, H., Singh, A. K., Nenoff, N., Roßbach, D., Görgen, A., Chmel, S., Azaiez, F., Astier, A., Bazzacco, D., Belleguic, M., Bouneau, S., Bourgeois, C., Buforn, N., Cederwall, B., Deloncle, I., Domscheit, J., Hannachi, F., Hauschild, K., and Korichi, A.

Subjects
LEAD, MOLECULAR rotation, NUCLEAR excitation
Abstract

A detailed spectroscopic study of high-spin states in [sup 196]Pb has been carried out using the EUROBALL spectrometer array. Five new magnetic-rotational bands have been found and the previously known bands have been extended. With one exception, all the bands have been connected to lower-lying states and excitation energies, spins and parities have been determined. Doppler-broadend lineshapes have been analyzed and lifetimes of states in four of the bands have been determined. The B(M1) values show the decrease with increasing spin that is expected for shears bands. Configurations of proton-particle excitations coupled to neutron-hole states have been assigned to the bands. [ABSTRACT FROM AUTHOR]

Published
2003

46. THE USE OF THE LEVEL MIXING SPECTROSCOPY TECHNIQUE FOR THE STUDY OF QUADRUPOLE MOMENTS IN THE PB-REGION

Author

VYVEY, K., primary, NEYENS, G., additional, BALABANSKI, D. L., additional, BORREMANS, D., additional, COULIER, N., additional, COUSSEMENT, R., additional, DE CLERCQ, W., additional, GEORGIEV, G., additional, TEUGHELS, S., additional, CHMEL, S., additional, HÜBEL, H., additional, NENOFF, N., additional, PANCHOLI, S., additional, ROSSBACH, D., additional, and SCHWENGNER, R., additional

Published
2001
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49. Magnetic rotation in 197Pb and 198Pb

Author

Görgen, A., primary, Nenoff, N., additional, Hübel, H., additional, Baldsiefen, G., additional, Becker, J.A., additional, Byrne, A.P., additional, Chmel, S., additional, Clark, R.M., additional, Deleplanque, M.A., additional, Diamond, R.M., additional, Fallon, P., additional, Hauschild, K., additional, Hibbert, I.M., additional, Korten, W., additional, Krücken, R., additional, Lee, I.Y., additional, Macchiavelli, A.O., additional, Paul, E.S., additional, van Severen, U.J., additional, Stephens, F.S., additional, Vetter, K., additional, Wadsworth, R., additional, Wilson, A.N., additional, and Wilson, J.N., additional

Published
2001
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50. Quadrupole moments of the 11[sup -] intruder isomers in [sup 194,196]Pb.

Author

Vyvey, K., Neyens, G., Balabanski, D. L., Borremans, D., Chmel, S., Coulier, N., Coussement, R., De Clercq, W., Frauendorf, S., Georgiev, G., Hu¨bel, H., Nenoff, N., Oros, A. M., Pancholi, S., Rossbach, D., Schwengner, R., Teughels, S., and Heyde, K.

Subjects
QUADRUPOLE moments, SPECTRUM analysis, NUCLEAR isomers
Abstract

The spectroscopic quadrupole moments of the 11[sup -] isomers in [sup 194]Pb and [sup 196]Pb have been measured by applying the Level Mixing Spectroscopy technique. These isomers have the π(s[sub 1/2][SUP ARRANGE="STAGGER"]-2]h[sub 9/2]i[sub 13/2]) proton configuration. The implications of these results for the influence of the intruder character of the isomers on their deformation is given. We will especially focus on a simple 2-dimensional model, taking into account the coupling of the valence nucleons with the vibrations of the underlying core, which gives theoretical insight in the obtained experimental results for the quadrupole moments of the 11[sup -] isomers. © 2002 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2002

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