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296 results on '"Deleplanque, M.A."'

52. Shears bands in the Pb region

Author

Hübel, H., Baldsiefen, G., Clark, R.M., Asztalos, S.J., Becker, J.A., Bernstein, L., Deleplanque, M.A., Diamond, R.M., Fallon, P., Hibbert, I.M., Krücken, R., Lee, I.Y., Macchiavelli, A.O., MacLeod, R.W., Schmid, G., Stephens, F.S., Vetter, K., and Wadsworth, R.

Published
1997
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55. High-angular-momentum structures in 64Zn

Author

Seweryniak, D., Lane, G.J., Cromaz, M., Lee, I.Y., Stephens, F.S., Lauritsen, T., Vetter, K., Andreoiu, C., Carpenter, M.P., Khoo, T.L., Austin, R.A.E., Macchiavelli, A.O., Waddington, J.C., Wyss, R., Thelen, O., Karlgren, D., Rodinger, T., Sarantites, D.G., Fallon, P., Svensson, C.E., Steinhardt, T., Ragnarsson, I., Kondev, F., Janssens, R.V.F., Deleplanque, M.A., Görgen, A., Ward, D., Diamond, R.M., Rudolph, D., and Clark, R.M.

Abstract

High-angular-momentum states in 64Zn were populated in the 40Ca( 28Si,4p) reaction at a beam energy of 122 MeV. Evaporated, light, charged particles were identified by the Microball, while γ rays were detected using the Gammasphere array. The main focus of this paper is on two strongly coupled, collective bands. The yrast band, which was previously known, has been linked to lower-lying states establishing the excitation energies and angular momenta of in-band states for the first time. The newly identified excited band decays to the yrast band but firm angular-momentum assignments could not be made. In order to interpret these structures cranked-Nilsson-Strutinsky calculations have been performed. The calculations have been extended to account for the distribution of nucleons within a configuration. The yrast collective band is interpreted as based on the π(f 7/2) -1(p 3/2f 5/2) 2(g 9/2) 1 ν(p 3/2f 5/2) 4(g 9/2) 2 configuration. There are several possible interpretations of the second band but it is difficult to distinguish between the different possibilities.

Published
2004
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56. High-spin study of rotational structures in 72Br

Author

O'Leary, C.D., Janssens, R.V.F., Diamond, R.M., Ward, D., Austin, R.A.E., Macchiavelli, A.O., Cromaz, M., Seweryniak, D., Waddington, J.C., Ragnarsson, I., Cameron, J.A., Lane, G.J., Hodgson, D.F., Deleplanque, M.A., Appelbe, D.E., Clark, R.M., Vetter, K., Lister, C.J., Jenkins, D.G., Svensson, C.E., Stephens, F.S., Fallen, P., Kelsall, N.S., Wadsworth, R., Sarantites, D., Carpenter, M.P., and Ball, G.C.

Abstract

High-spin states in 3572Br37 were studied using the 40Ca(36Ar, 3pn) reaction. The existing level scheme has been significantly modified and extended. Evidence has been found for a spin reassignment of -1ℏh to the previously observed negative-parity band, which carries implications for the interpretation of a signature inversion in this structure. One signature of the previously assigned positive-parity band is interpreted as negative parity and has been extended to I π=(22-) and its signature partner has been observed up to Iπ = (19-) for the first time. The remaining positive-parity band has been extended to Iπ=(29+). A sequence of states observed to Iπ=(22+) may be the signature partner of this structure. Configurations have been assigned to each of these three structures through comparisons to cranked Nilsson-Strutinsky calculations.

Published
2004
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57. Fast Rotation of the N=Z Nucleus 36Ar

Author

Svensson, C.E., Macchiavelli, A.O., Juodagalvis, A., Poves, A., Ragnarsson, I., Aberg, S., Appelbe, D.E., Austin, R.A.E., Baktash, C., Ball, G.C., Carpenter, M.P., Caurier, E., Clark, R.M., Cromaz, M., Deleplanque, M.A., Diamond, R.M., Fallon, P., Furlotti, M., Galindo-Uribarri, A., Janssens, R.V.F., Lane, G.J., Lee, I.Y., Lipoglavek, M., Nowacki, F., Paul, S.D., Radford, D.C., Sarantites, D.G., Seweryniak, D., Stephens, F.S., Tomov, V., Vetter, K., Ward, D., Yu, C.H., 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 Heyd, Yvette

Subjects
Nuclear Theory (nucl-th), Nuclear Theory, FOS: Physical sciences
Abstract

A highly-deformed rotational band has been identified in the N=Z nucleus 36Ar. At high spin the band is observed to its presumed termination at I=16+, while at low spin it has been firmly linked to previously known states in 36Ar. Spins, parities, and absolute excitation energies have thus been determined throughout the band. Lifetime measurements establish a large low-spin quadrupole deformation (beta_2=0.46+-0.03) and indicate a decreasing collectivity as the band termination is approached. With effectively complete spectroscopic information and a valence space large enough for significant collectivity to develop, yet small enough to be meaningfully approached from the shell model perspective, this rotational band in 36Ar provides many exciting opportunities to test and compare complementary models of collective motion in nuclei., Invited talk at "High Spin Physics 2001", see http://www.fuw.edu.pl/~hs2001/, to be published in Acta Physica Polonica B

Published
2001

58. Lifetimes of superdeformed rotational states in $^{36}$Ar

Author

Svensson, C.E., Macchiavelli, A.O., Juodagalvis, A., Poves, A., Ragnarsson, I., Aberg, D., Appelbe, E., Austin, R.A.E., Ball, G.C., Carpenter, M.P., Caurier, E., Clark, R.M., Cromaz, M., Deleplanque, M.A., Diamond, R.M., Fallon, P., Janssens, R.V.F., Lane, G.J., Lee, I.Y., Nowacki, F., Sarantites, D.G., Stephens, F.S., Vetter, K., Ward, D., 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 Heyd, Yvette

Abstract

Lifetimes have been measured in a superdeformed rotational band recently identified in the [Formula Presented] nucleus [Formula Presented] A large low-spin quadrupole deformation [Formula Presented] is confirmed and a decrease in the collectivity is observed as the high-spin band termination at [Formula Presented] is approached. Detailed comparisons of the experimental [Formula Presented] values with the results of cranked Nilsson-Strutinsky and large-scale [Formula Presented] spherical shell model calculations indicate the need for a more refined treatment of transition matrix elements close to termination in the former, and the inclusion of the complete [Formula Presented] model space in the latter description of this highly-collective rotational band.

Published
2001

59. Band structure of 68Ge

Author

Baktash, C., Ward, D., Janssens, R.V.F., Radford, D., Flibotte, S., Galindo-Uribarri, A., Clark, R.M., Cromaz, M., Seweryniak, D., Lampman, T., Wilson, J.N., Ragnarsson, I., Cameron, J.A., Stephens, F.S., Thelen, O., Haslip, D.S., Yu, C.-H., Macchiavelli, A.O., Deleplanque, M.A., Devlin, M., Rudolph, D., Sarantites, D.G., Lee, I.Y., Vetter, K., Svensson, C.E., Lane, G.J., Schaly, B., Paul, S.D., Diamond, R.M., Fallon, P., Waddington, J.C., Bentley, M.A., Carpenter, M.P., and Lerma, F.

Abstract

The nucleus 68Ge has been studied by gamma-ray spectroscopy following its population at high spin in the reaction 40Ca(32S,4p) 68Ge. The reaction channel was selected with the Microball array and gamma rays were detected with the Gammasphere array. The level scheme is very complex, reflecting the many different, and presumably mixed, excitation modes in this nucleus. Nevertheless, there appear to be some simplifications in the spin range above 18ℏ where we have identified a superdeformed band and several terminating bands. The results are compared with a cranked Nilsson-Strutinsky model without pairing.

Published
2001
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60. Yrast and near-yrast excitations up to high spin in 10048Cd52

Author

Ward, D., Diamond, R.M., Macchiavelli, A.O., Deleplanque, M.A., Chiara, C.J., Devlin, M., Cromaz, M., Starosta, K., Sarantites, D.G., LaFosse, D.R., Lee, I.Y., Lane, G.J., Waddington, J.C., Wiedenhover, I., Seweryniak, D., Vetter, K., Carpenter, M.P., Wilson, J.N., Clark, R.M., Koike, T., Jenkins, D.G., Fossan, D.B., Janssens, R.V.F., Appelbe, D., Wadsworth, R., Alex Brown, B., Stephens, F.S., Svensson, C.E., Kelsall, N., and Fallon, P.

Abstract

The gamma decay of excited states in the nucleus 100Cd, which is two proton holes and two neutrons away from doubly magic (N=Z=50) 100Sn, has been studied with the Gammasphere array following the 46Ti(58Ni,2p2n) reaction at 215 MeV. Residues were identified by detection of evaporated charged particles in the Microball CsI array, by neutron detection in a set of liquid scintillator detectors, and by a tag on the delayed gamma-ray decay of the known 8+ isomeric state. The level scheme has been extended up to 20ℏ in angular momentum and to nearly 10 MeV in excitation energy. The results are compared with shell-model calculations.

Published
2000
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61. Pseudo-spin symmetry and identical SD bands: the excited superdeformed bands in $^{191}$Au

Author

Schuck, C., Gueorguieva, E., Stephens, F.S., Deleplanque, M.A., Hannachi, F., Korichi, A., Lopez-Martens, A., Kharraja, B., Kelly, W.H., Vieu, Ch., Kaci, M., Dionisio, J.S., Deloncle, I., Gall, B.J.P., Van Severen, U.J., Pohler, W., Schulze, B., Hubel, H., Wadsworth, R., Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (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 Subatomiques (IReS), and 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)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1998

62. Fragmentation of the two-phonon octupole vibrational states in 208Pb

Author

Vetter, K., Macchiavelli, A.O., Moore, E.F., Amro, H., Janssens, R.V.F., Lee, I.Y., Clark, R.M., Asztalos, S.J., Schmid, G.J., MacLeod, R.W., Diamond, R.M., Simon, M.W., Busse, B.C., Fallon, P., Cline, D., Deleplanque, M.A., Krücken, R., Gray, R., Wu, C.Y., and Stephens, F.S.

Abstract

An experiment designed to populate two-phonon vibrational states in 208Pb by Coulomb excitation was performed with a 136Xe beam at a bombarding energy of 650 MeV. The g rays from the decay of the excited states were measured with Gammasphere and scattered particles were detected in the compact heavy-ion counter CHICO. We have not been able to observe any state close to the expected harmonic energy of 5.2 MeV. However, we were able to extract the B(E3,31 2!61 1) value for the lowest known 61 state at 4.424 MeV based on measured g-ray intensities. About 20% of the expected total E3 strength can be found in this state, suggesting a large fragmentation of this second octupole phonon state in 208Pb. Upper limits for the B(E3) strength were determined for higher-lying, but unseen, 61 states ranging from 15% of the harmonic value at 5.2 MeV to 100% at 6.0 MeV.

Published
1998
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63. Structure of superdeformed bands in 195Hg

Author

Macchiavelli, A.O., Carpenter, M.P., Ahmad, I., Fallon, P., Ackermann, D., Amro, H., Clark, R.M., Hackman, G., Diamond, R.M., Fischer, S.M., Wyss, R., Krücken, R., Deleplanque, M.A., Asztalos, S., Janssens, R.V.F., Khoo, T.L., Schmid, G.J., Blumenthal, D.J., Lee, I.-Y., MacLeod, R.W., Lauritsen, T., Nisius, D., Herskind, B., Vetter, K., and Stephens, F.S.

Abstract

Four new superdeformed bands have been observed with the Gammasphere array and have been assigned to the 195Hg nucleus. Two of the bands are interpreted as signature partners most likely based on Nosc6 neutron quasiparticles coupled to a superdeformed core, while the other two appear to be based on a j15/2 intruder orbital. These four bands do not exhibit a simple, ``identical bands'' relationship to other superdeformed bands in this mass region.

Published
1997
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64. Search for hyperdeformation in $^{168}$Yb

Author

Wilson, H.N., Asztalos, S.J., Austin, R.A., Busse, B., Clark, R.M., Deleplanque, M.A., Diamond, R.M., Fallon, P., Flibotte, S., Gervais, G., Haslip, D.S., Lee, I.Y., Kruecken, R., Macchiavelli, A.O., MacLeod, R.W., Mieminen, J.M., Schmid, G.J., Stephens, F.S., Stezowski, O., Svensson, C.E., Vetter, K., Waddington, J.C., 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 Heyd, Yvette

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], librarians, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1997

65. Superdeformed proton orbitals below the Z=80 gap: $^{191}$Au

Author

Lopez-Martens, A., Gueorguieva, E., Schuck, C., Hannachi, F., Vieu, C., Dionisio, J.S., Kaci, M., Deloncle, I., Porquet, M.G., Korichi, A., Duprat, J., Bouneau, S., Azaiez, F., Kelly, W.H., Gall, B.J.P., Kharraja, B., Van Severen, U.J., Pohler, W., Schulze, B., Hubel, H., Deleplanque, M.A., Wadsworth, R., Lorgeril, Jocelyne, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (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 Physique Nucléaire d'Orsay (IPNO), Institut de Recherches Subatomiques (IReS), and 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)

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1996

66. Investigation of antimagnetic rotation in light Cadmium nulei: 106,108 Cd

Author

Simons, A.J., Wadsworth, R, Jenkins, D.G., Clark, R M, Cromaz, M., Deleplanque, M.A., Diamond, R.M., Fallon, P, Lane, Gregory, Lee, I-Y, Macchiavelli, A O, Stephens, F.S., Svensson, C.E., Vetter, K, Ward, D, Frauendorf, S., Gu, Y., Simons, A.J., Wadsworth, R, Jenkins, D.G., Clark, R M, Cromaz, M., Deleplanque, M.A., Diamond, R.M., Fallon, P, Lane, Gregory, Lee, I-Y, Macchiavelli, A O, Stephens, F.S., Svensson, C.E., Vetter, K, Ward, D, Frauendorf, S., and Gu, Y.

Abstract

The lifetimes of excited states belonging to the lowest lying positive-parity bands in Cd106,108 have been measured using the Doppler-shift attenuation method. The resulting B(E2) transition rates show a significant decrease with increasing spin in Cd106, whereas in Cd108 there is tentative evidence for a similar effect. The results are compared with cranking and semiclassical model calculations, which indicate that the structures have the properties expected from an "antimagnetic" rotational band resulting from the coupling of g9/2 proton holes to aligned pairs of h11/2 and g7/2 neutron particles.

Published
2005

67. Decay of superdeformed bands

Author

Carpenter, M.P., Khoo, T.L., Lauritsen, T., Dossing, T., Ahmad, I., Ackermann, D., Blumenthal, D.J., Fischer, S.M., Gassmann, D., Hackman, G., Henry, R.G., Janssens, R.V.F., Nisius, D., Moore, E.F., Lopez-Martens, A., Hannachi, F., Kruecken, R., Asztalos, S.J., Clark, R.M., Deleplanque, M.A., Diamond, R.M., Fallon, P., Lee, I.Y., Macchiavelli, A.O., Stephens, F.S., Becker, J.A., Bernstein, L., Farris, L.P., Henry, E.A., Korichi, A., Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (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 Lorgeril, Jocelyne

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1995

68. Identification of the unfavored N=7 superdeformed band in Hg191

Author

Diamond, R.M., Fallon, P., Carpenter, M.P., Lee, I.Y., Farris, L.P., Janssens, R.V.F., Cederwall, B., Gassmann, D., MacHiavelli, A.O., Henry, E.A., Moore, E.F., Stephens, F.S., Crowell, B., Brinkman, M.J., Becker, J.A., Ahmad, I., Deleplanque, M.A., Nisius, D., Henry, R.G., Lauritsen, T., Hughes, J.R., Khoo, T.L., and Garg, U.

Abstract

A new superdeformed band has been identified in Hg191 bringing the total number of bands observed in this nucleus to four. The new band has properties similar to those of a superdeformed band reported recently in Hg193. Both bands are believed to be built on the unfavored signature of the j15/2 intruder configuration. Comparisons between the data and cranked Woods-Saxon calculations highlight the strengths and weaknesses of theory in describing high-N orbitals at large deformation.

Published
1995
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69. Onset of collectivity in neutron deficient Po196,198

Author

MacChiavelli, A.O., Khoo, T.L., Farris, L.P., Deleplanque, M.A., Carpenter, M.P., Duyar, C., Rubel, E., Kuhnert, A., Burde, J., Henry, E.A., Oliveira, J.R.B., Draper, J.E., Vo, D.T., Bernstein, L.A., Hughes, J.R., Henry, R.G., Stephens, F.S., Jin, H.-Q., Charos, A., Lauritsen, T., Becker, J.A., Cizewski, J.A., Wang, T.F., Bearden, I.G., Younes, W., Brinkman, M.J., Lee, I.Y., Diamond, R.M., Ye, D., Fallon, P., Janssens, R.V.F., Cederwall, B., and Stoyer, M.A.

Abstract

We have studied via in-beam -ray spectroscopy Po196 and Po198, which are the first neutron-deficient Po isotopes to exhibit a collective low-lying structure. The ratios of yrast state energies and the E2 branching ratios of transitions from non-yrast to yrast states are indicative of a low-lying vibrational structure. The onset of collective motion in these isotopes can be attributed to the opening of the neutron i13/2 orbital at N112 and the resulting large overlap between the two valence protons in the h9/2 orbital and the valence neutrons in the i13/2 orbital.

Published
1995
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70. Quasiparticle excitations in superdeformed Hg192

Author

Lee, I.Y., Khoo, T.L., Gall, B., Korichi, A., Lauritsen, T., Janssens, R.V.F., Deleplanque, M.A., Schuck, C., Fallon, P., Stephens, F.S., Crowell, B., Henry, R.G., Clark, R.M., MacChiavelli, A.O., Carpenter, M.P., Hannachi, F., Cederwall, B., Ahmad, I., and Diamond, R.M.

Abstract

For the first time, two excited superdeformed (SD) bands have been observed in the double closed shell superdeformed nucleus Hg192. One of the SD bands exhibits a pronounced peak in the dynamic moment of inertia which is interpreted as a crossing between two excited SD configurations involving the N=7 intruder and the [512]5/2 orbitals. This is only the second occurrence of such a crossing in a SD nucleus around A=190. The second excited SD band has near identical transition energies to an excited SD band in Hg191.

Published
1995
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71. Proton and neutron excitations in superdeformed Tb150

Author

Henry, R.G., Diamond, R.M., Lauritsen, T., Crowell, B., Cederwall, B., Twin, P.J., Stephens, F.S., Lee, I.Y., Deleplanque, M.A., Nisius, D., Beausang, C.W., Fallon, P., Bergstrom, M., Khoo, T.L., Macchiavelli, A.O., Janssens, R.V.F., Clarke, S., Carpenter, M., and Asztalos, S.

Abstract

Two new superdeformed (SD) bands have been observed in Tb150 using the reaction P31+124Sn and the GAMMASPHERE detector array. These new bands are interpreted as being excited SD configurations involving a proton and a neutron particle-hole excitation, respectively. The configurations are discussed in terms of the occupancy of high-N intruder orbitals. These data are used to provide information on (i) the contribution to the dynamic moments of inertia due to the occupation of specific orbitals, (ii) the deformation driving effects of the particle-hole states, and (iii) the consequences of these effects on pairing and band-crossings.

Published
1995
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72. Evidence for a New Type of Shears Mechanism in 106 Cd

Author

Simons, A.J., Wadsworth, R, Jenkins, D.G., Clark, R M, Cromaz, M., Deleplanque, M.A., Diamond, R.M., Fallon, P, Lane, Gregory, Lee, I-Y, Macchiavelli, A O, Stephens, F.S., Svensson, C.E., Vetter, K, Ward, D, Frauendorf, S., Simons, A.J., Wadsworth, R, Jenkins, D.G., Clark, R M, Cromaz, M., Deleplanque, M.A., Diamond, R.M., Fallon, P, Lane, Gregory, Lee, I-Y, Macchiavelli, A O, Stephens, F.S., Svensson, C.E., Vetter, K, Ward, D, and Frauendorf, S.

Abstract

The lifetimes of states in the lowest lying positive parity band in 106Cd were measured. The Doppler shift attenuation method was used. It was suggested that the structure has the character of a shear-type band resulting from the coupling of g9/2 proton holes to aligned pairs of h11/2 and g7/2 neutron particles.

Published
2003

73. New features of superdeformed bands in Hg194

Author

Rubel, E., Draper, J.E., Satula, W., Farris, L.P., Hughes, J.R., Janssens, R.V.F., Carpenter, M.P., Cederwall, B., Becker, J.A., Stoyer, M.A., Lauritsen, T., Henry, R.G., Diamond, R.M., Fallon, P., Ahmad, I., Wyss, R., Stephens, F.S., Deleplanque, M.A., Wiedenhoever, I., Henry, E.A., Macchiavelli, A.O., Khoo, T.L., Lee, I.Y., Brinkman, M.J., Crowell, B., and Duyar, C.

Abstract

Two new features of superdeformed (SD) bands in the A190 region emerge from a study of Hg194 with the Gammasphere detector array. A decrease of the dynamic moment of inertia is observed for rotational frequencies Latin small letter h with strokeω0.4 MeV, confirming long standing expectations based on mean field calculations with pairing. Evidence for a small staggering in the SD transition energies is also observed, suggesting the presence of terms with fourfold symmetry in the SD Hamiltonian.

Published
1994
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74. Comment on lack of evidence for a superdeformed band in $^{192}$Pb

Author

Henry, E.A., Kuhnert, A., Becker, J.A., Brinkman, M.J., Wang, T.F., Cizewski, J.A., Korsten, W., Azaiez, F., Deleplanque, M.A., Diamond, R.M., Draper, J.E., Kelly, W.H., Macchiavelli, A.O., Stephens, F.S., Institut de Physique Nucléaire d'Orsay (IPNO), and 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)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1994

75. High-K multi-quasiparticle states in 254No

Author

Clark, R.M., primary, Gregorich, K.E., additional, Berryman, J.S., additional, Ali, M.N., additional, Allmond, J.M., additional, Beausang, C.W., additional, Cromaz, M., additional, Deleplanque, M.A., additional, Dragojević, I., additional, Dvorak, J., additional, Ellison, P.A., additional, Fallon, P., additional, Garcia, M.A., additional, Gates, J.M., additional, Gros, S., additional, Jeppesen, H.B., additional, Kaji, D., additional, Lee, I.Y., additional, Macchiavelli, A.O., additional, Morimoto, K., additional, Nitsche, H., additional, Paschalis, S., additional, Petri, M., additional, Stavsetra, L., additional, Stephens, F.S., additional, Watanabe, H., additional, and Wiedeking, M., additional

Published
2010
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76. New oblate band in $^{196}$Hg with quenched M1 strenght

Author

Cederwall, B., Deleplanque, M.A., Azaiez, F., Diamond, R.M., Fallon, P., Korten, W., Lee, I.Y., Macchiavelli, A.O., Oliveira, J.R.B., Stephens, F.S., Kelly, W.H., Vo, D.T., Becker, J.A., Brinkman, M.J., Henry, E.A., Hughes, J.R., Kuhnert, A., Stoyer, M.A., Wang, T.F., Draper, J.E., Duyar, C., Rubel, E., Deboer, J., Institut de Physique Nucléaire d'Orsay (IPNO), 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 Blanchet, Marie-Christine

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1993

77. 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

78. Structure of exotic nuclei near and above 208 Pb populated via deep-inelastic collisions

Author

Lane, G J, Broda, R., Fornal, B., Byrne, Aidan, Dracoulis, George, Blomqvist, J., Clark, R M, Cromaz, M., Deleplanque, M.A., Diamond, R.M., Fallon, P, Janssens, R V F, Lee, I-Y, Macchiavelli, A O, Maier, K H, Rejmund, M, Stephens, F S, Svensson, C.E., Vetter, K, Ward, D, Wiedenhover, I, Wrzesinski, J, Lane, G J, Broda, R., Fornal, B., Byrne, Aidan, Dracoulis, George, Blomqvist, J., Clark, R M, Cromaz, M., Deleplanque, M.A., Diamond, R.M., Fallon, P, Janssens, R V F, Lee, I-Y, Macchiavelli, A O, Maier, K H, Rejmund, M, Stephens, F S, Svensson, C.E., Vetter, K, Ward, D, Wiedenhover, I, and Wrzesinski, J

Published
2001

79. Oblate collectivity in $^{197-198}$Pb

Author

Kuhnert, A., Wang, T.F., Stoyer, M.A., Becker, J.A., Henry, E.A., Brinkman, M.J., Yates, S.W., Draper, J.E., Deleplanque, M.A., Diamond, R.M., Stephens, F.S., Machiavelli, A.O., Kelly, W.H., Korten, W., Azaiez, F., Ciwewski, J.A., Institut de Physique Nucléaire d'Orsay (IPNO), 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
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1992

80. Symmetries in superdeformed nuclei

Author

Cijeski, J.A., Becker, J.A., Henry, E.A., Brinkman, M.J., Stephen, F.S., Deleplanque, M.A., Diamond, R.M., Azaiez, F., Macchiavelli, A.O., Institut de Physique Nucléaire d'Orsay (IPNO), 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 Blanchet, Marie-Christine

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1992

81. Oblate collectivity in $^{197}$Pb

Author

Kuhnert, A., Stoyer, M.A., Becker, J.A., Henry, E.A., Brinkman, M.J., Yates, S.W., Wang, T.F., Cizewski, J.A., Stephens, F.S., Deleplanque, M.A., Diamond, R.M., Macchiavelli, A.O., Draper, J.E., Azaiez, F., Kelly, W.H., Korten, W., Institut de Physique Nucléaire d'Orsay (IPNO), and 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)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1992

82. Dynamical symmetries in a=194 superdeformed nuclei

Author

Cizewski, J.A., Brinkman, M.J., Becker, J.A., Henry, E.A., Roy, N., Wang, T.F., Kuhnert, A., Yates, S.W., Stephens, F.S., Deleplanque, M.A., Diamond, R.M., Azaiez, F., Beausang, C.W., Draper, J.E., Korten, W., Macchiavelli, A.O., Institut de Physique Nucléaire d'Orsay (IPNO), and 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)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1991

83. Identical superdeformed bands in thallium isotopes

Author

Azaiez, F., Kelly, W.H., Korten, W., Stephens, F.S., Deleplanque, M.A., Diamond, R.M., Macchiavelli, A.O., Draper, J.E., Rubel, E.C., Beausang, C.W., Becker, J.A., Henry, E.A., Yates, S.W., Brinkman, J., Kuhnert, A., Cizewski, J.A., Wang, T.F., Blanchet, Marie-Christine, Institut de Physique Nucléaire d'Orsay (IPNO), and 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)

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1991

84. Origin of unit alignment in superdeformed bands in [Formula Presented] nuclei

Author

Fallon, Paul, Heenen, Paul-Henri, Satuła, Wojciech, Clark, Roderick R.M., Stephens, Frank F.S., Deleplanque, M.A. M.A., Diamond, Richard R.M., Lee, I.-Y., Macchiavelli, Augusto A.O., Vetter, Kai, Fallon, Paul, Heenen, Paul-Henri, Satuła, Wojciech, Clark, Roderick R.M., Stephens, Frank F.S., Deleplanque, M.A. M.A., Diamond, Richard R.M., Lee, I.-Y., Macchiavelli, Augusto A.O., and Vetter, Kai

Abstract

The results of an experimental and theoretical study of the inertias and alignments of superdeformed bands (SD) in [Formula Presented] nuclei are presented. We show that [Formula Presented] bands tend to be distributed among three groups characterized by their alignments and the number of unpaired nucleons. The alignments cluster around integer values ([Formula Presented] relative to the reference chosen for this study), but the distribution is not strongly peaked: rather it is relatively “broad” compared with the separation, suggesting that the “strict” quantized alignments observed in some nuclei are not a systematic feature of all [Formula Presented] bands. We further show that mean-field calculations reproduce the general experimental properties and give the three band groups seen in experiment, but they do not generally reproduce the specific alignment of SD band pairs; nor, in general, do they give “good” identical bands. © 1999 The American Physical Society., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1999

85. Origin of unit alignment in superdeformed bands in A ≈ 190 nuclei

Author

Fallon, Paul, Vetter, Kai, Heenen, Paul-Henri, Satuslashed l signa, W., Clark, R. M., Stephens, Frank F.S., Deleplanque, M.A. M.A., Diamond, Richard R.M., Lee, I.-Y., Macchiavelli, Augusto A.O., Fallon, Paul, Vetter, Kai, Heenen, Paul-Henri, Satuslashed l signa, W., Clark, R. M., Stephens, Frank F.S., Deleplanque, M.A. M.A., Diamond, Richard R.M., Lee, I.-Y., and Macchiavelli, Augusto A.O.

Abstract

The results of an experimental and theoretical study of the inertias and alignments of superdeformed bands (SD) in A ∼ 190 nuclei are presented. We show that A ∼ 190 SD bands tend to be distributed among three groups characterized by their alignments and the number of unpaired nucleons. The alignments cluster around integer values (i ≈ - 1,0,1, relative to the reference chosen for this study), but the distribution is not strongly peaked: rather it is relatively "broad" compared with the separation, suggesting that the "strict" quantized alignments observed in some nuclei are not a systematic feature of all A ∼ 190 SD bands. We further show that mean-field calculations reproduce the general experimental properties and give the three band groups seen in experiment, but they do not generally reproduce the specific alignment of SD band pairs; nor, in general, do they give "good" identical bands., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1999

86. GRETINA: A gamma ray energy tracking array

Author

Lee, I.Y., primary, Clark, R.M., additional, Cromaz, M., additional, Deleplanque, M.A., additional, Descovich, M., additional, Diamond, R.M., additional, Fallon, P., additional, Macchiavelli, A.O., additional, Stephens, F.S., additional, and Ward, D., additional

Published
2004
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87. Structure of Superdeformed Bands of 195Hg

Author

Hackman, G., Krücken, R., Janssens, R.V.F., Deleplanque, M.A., Carpenter, M.P., Ackermann, D., Ahmad, I., Amro, H., Astalos, S., Blumenthal, D.J., Clark, R.M., Diamond, R.M., Fallon, P., Fisher, S.M., Herskind, B., Khoo, T.L., Lauritsen, T., Lee, I.-Y., MacLeod, R.W., Macchiavelli, A.O., Nisius, D., Schmid, G.J., Stephens, F.S., Vetter, K., Wyss, R., Hackman, G., Krücken, R., Janssens, R.V.F., Deleplanque, M.A., Carpenter, M.P., Ackermann, D., Ahmad, I., Amro, H., Astalos, S., Blumenthal, D.J., Clark, R.M., Diamond, R.M., Fallon, P., Fisher, S.M., Herskind, B., Khoo, T.L., Lauritsen, T., Lee, I.-Y., MacLeod, R.W., Macchiavelli, A.O., Nisius, D., Schmid, G.J., Stephens, F.S., Vetter, K., and Wyss, R.

Published
1997

88. Lifetime measurements with the Euroball spectrometer

Author

Dewald, A., primary, Kemper, G., additional, Peusquens, R., additional, Fitzler, A., additional, Kasemann, S., additional, Wiedenhöver, I., additional, Zell, K.O., additional, von Brentano, P., additional, Hübel, H., additional, Chmel, S., additional, Görgen, A., additional, Bazzacco, D., additional, Venturelli, R., additional, Lunardi, S., additional, Rossi-Alvarez, C., additional, Petrache, C.M., additional, Napoli, D.R., additional, Hannachi, F., additional, Lopez-Martens, A., additional, Krücken, R., additional, Cooper, J.R., additional, Clark, R.M., additional, Deleplanque, M.A., additional, Fallon, P., additional, Lee, I.Y., additional, Macchiavelli, A.O., additional, and Stephens, F.S., additional

Published
2001
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89. Collective rotational motion in the N=Z nucleus 36Ar

Author

Svensson, C.E., primary, Macchiavelli, A.O., additional, Juodagalvis, A., additional, Poves, A., additional, Ragnarsson, I., additional, Åberg, S., additional, Appelbe, D.E., additional, Austin, R.A.E., additional, Baktash, C., additional, Ball, G.C., additional, Carpenter, M.P., additional, Caurier, E., additional, Clark, R.M., additional, Cromaz, M., additional, Deleplanque, M.A., additional, Diamond, R.M., additional, Fallon, P., additional, Furlotti, M., additional, Galindo-Uribarri, A., additional, Janssens, R.V.F., additional, Lane, G.J., additional, Lee, I.Y., additional, Lipoglavšek, M., additional, Nowacki, F., additional, Paul, S.D., additional, Radford, D.C., additional, Sarantites, D.G., additional, Seweryniak, D., additional, Stephens, F.S., additional, Tomov, V., additional, Vetter, K., additional, Ward, D., additional, and Yu, C.H., additional

Published
2001
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90. Structure of exotic nuclei near and above 208Pb populated via deep-inelastic collisions

Author

Lane, G.J., primary, Broda, R., additional, Fornal, B., additional, Byrne, A.P., additional, Dracoulis, G.D., additional, Blomqvist, J., additional, Clark, R.M., additional, Cromaz, M., additional, Deleplanque, M.A., additional, Diamond, R.M., additional, Fallon, P., additional, Janssens, R.V.F., additional, Lee, I.Y., additional, Macchiavelli, A.O., additional, Maier, K.H., additional, Rejmund, M., additional, Stephens, F.S., additional, Svensson, C.E., additional, Vetter, K., additional, Ward, D., additional, Wiedenhöver, I., additional, and Wrzesinski, J., additional

Published
2001
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91. 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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95. Collective oblate bands in^{196}Pb

Author

Ahmad, I., Bearden, I.G., Becker, J.A., Brinkman, M.J., Burde, J., Carpenter, M.P., Cizewski, J.A., Daly, P.J., Deleplanque, M.A., Diamond, R.M., Draper, J.E., Duyar, C., Fornal, B., Garg, U., Grabowski, Z.W., Ahmad, I., Bearden, I.G., Becker, J.A., Brinkman, M.J., Burde, J., Carpenter, M.P., Cizewski, J.A., Daly, P.J., Deleplanque, M.A., Diamond, R.M., Draper, J.E., Duyar, C., Fornal, B., Garg, U., and Grabowski, Z.W.

Published
1993

96. Spectroscopy of Rn, Ra and Th isotopes using multi-nucleon transfer reactions

Author

Cocks, J.F.C., primary, Hawcroft, D., additional, Amzal, N., additional, Butler, P.A., additional, Cann, K.J., additional, Greenlees, P.T., additional, Jones, G.D., additional, Asztalos, S., additional, Clark, R.M., additional, Deleplanque, M.A., additional, Diamond, R.M., additional, Fallon, P., additional, Lee, I.Y., additional, Macchiavelli, A.O., additional, MacLeod, R.W., additional, Stephens, F.S., additional, Jones, P., additional, Julin, R., additional, Broda, R., additional, Fornal, B., additional, Smith, J.F., additional, Lauritsen, T., additional, Bhattacharyya, P., additional, and Zhang, C.T., additional

Published
1999
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97. The shears mechanism in the lead isotopes

Author

Clark, R.M., primary, Krücken, R., additional, Asztalos, S.J., additional, Becker, J.A., additional, Busse, B., additional, Chmel, S., additional, Deleplanque, M.A., additional, Diamond, R.M., additional, Fallon, P., additional, Jenkins, D., additional, Hauschild, K., additional, Hibbert, I.M., additional, Hübel, H., additional, Lee, I.Y., additional, Macchiavelli, A.O., additional, MacLeod, R.W., additional, Schmid, G., additional, Stephens, F.S., additional, van Severen, U.J., additional, Vetter, K., additional, Wadsworth, R., additional, and Wan, S., additional

Published
1998
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99. Comparative quadrupole moments of superdeformed bands in 193−196Pb

Author

van Severen, U.J., primary, Clark, R.M., additional, Krücken, R., additional, Hübel, H., additional, Asztalos, S.J., additional, Becker, J.A., additional, Busse, B.C., additional, Deleplanque, M.A., additional, Diamond, R.M., additional, Fallon, P., additional, Hauschild, K., additional, Hibbert, I.M., additional, Lee, I.Y., additional, Macchiavelli, A.O., additional, MacLeod, R.W., additional, Schmid, G., additional, Stephens, F.S., additional, Vetter, K., additional, Wadsworth, R., additional, and Wan, S., additional

Published
1998
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100. Dipole band structures in 195Hg

Author

Nenoff, N., primary, Baldsiefen, G., additional, Hübel, H., additional, Görgen, A., additional, Korten, W., additional, Deleplanque, M.A., additional, Diamond, R.M., additional, Fallon, P., additional, Lee, I.Y., additional, Macchiavelli, A.O., additional, and Stephens, F.S., additional

Published
1998
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