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50 results on '"Lister C.J."'

1. Interplay of quasiparticle and vibrational excitations: First observation of isomeric states in 168Dy and 169Dy

Author

Zhang, G.X., primary, Watanabe, H., additional, Dracoulis, G.D., additional, Kondev, F.G., additional, Lane, G.J., additional, Regan, P.H., additional, Söderström, P.-A., additional, Walker, P.M., additional, Yoshida, K., additional, Kanaoka, H., additional, Korkulu, Z., additional, Lee, P.S., additional, Liu, J.J., additional, Nishimura, S., additional, Wu, J., additional, Yagi, A., additional, Ahn, D.S., additional, Alharbi, T., additional, Baba, H., additional, Browne, F., additional, Bruce, A.M., additional, Carpenter, M.P., additional, Carroll, R.J., additional, Chae, K.Y., additional, Chiara, C.J., additional, Dombradi, Zs., additional, Doornenbal, P., additional, Estrade, A., additional, Fukuda, N., additional, Griffin, C., additional, Ideguchi, E., additional, Inabe, N., additional, Isobe, T., additional, Kanaya, S., additional, Kojouharov, I., additional, Kubo, T., additional, Kubono, S., additional, Kurz, N., additional, Kuti, I., additional, Lalkovski, S., additional, Lauritsen, T., additional, Lee, C.S., additional, Lee, E.J., additional, Lister, C.J., additional, Lorusso, G., additional, Lotay, G., additional, McCutchan, E.A., additional, Moon, C.-B., additional, Nishizuka, I., additional, Nita, C.R., additional, Odahara, A., additional, Patel, Z., additional, Phong, V.H., additional, Podolyák, Zs., additional, Roberts, O.J., additional, Sakurai, H., additional, Schaffner, H., additional, Seweryniak, D., additional, Shand, C.M., additional, Shimizu, Y., additional, Sumikama, T., additional, Suzuki, H., additional, Takeda, H., additional, Terashima, S., additional, Vajta, Zs., additional, Valiente-Dóbon, J.J., additional, Xu, Z.Y., additional, and Zhu, S., additional

Published
2019
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2. N=151Pu,Cm and Cf nuclei under rotational stress: Role of higher-order deformations

Author

Hota, S.S., Chowdhury, P., Khoo, T.L., Carpenter, M.P., Janssens, R.V.F., Qiu, Y., Ahmad, I., Greene, J.P., Tandel, S.K., Seweryniak, D., Zhu, S., Bertone, P.F., Chiara, C.J., Deo, A.Y., D'Olympia, N., Gros, S., Guess, C.J., Harrington, T., Hartley, D.J., Henning, G., Hoffman, C.R., Jackson, E.G., Kondev, F.G., Lakshmi, S., Lauritsen, T., Lister, C.J., McCutchan, E.A., Moran, K., Nair, C., Peterson, D., Shirwadkar, U., and Stefanescu, I.

Subjects
Inelastic and transfer reactions, Nuclear Theory, Rotational alignments, Higher-order deformations, Superheavy, Neutron-rich, Nuclear Experiment, lcsh:Physics, lcsh:QC1-999
Abstract

Fast-rotating N=151 isotones 245Pu, 247Cm and 249Cf have been studied through inelastic excitation and transfer reactions with radioactive targets. While all have a ground-state band built on a νj15/2[734]9/2− Nilsson configuration, new excited bands have also been observed in each isotone. These odd-N excited bands allow a comparison of the alignment behavior for two different configurations, where the νj15/2 alignment is either blocked or allowed. The effect of higher order deformations is explored through cranking calculations, which help clarify the elusive nature of νj15/2 alignments. Keywords: Superheavy, Neutron-rich, Inelastic and transfer reactions, Rotational alignments, Higher-order deformations

Published
2014

3. Enhanced collectivity in 12Be

Author

Morse, C., primary, McCutchan, E.A., additional, Iwasaki, H., additional, Lister, C.J., additional, Bader, V.M., additional, Bazin, D., additional, Beceiro Novo, S., additional, Chowdhury, P., additional, Gade, A., additional, Johnson, T.D., additional, Loelius, C., additional, Lunderberg, E., additional, Merchan, E., additional, Prasher, V.S., additional, Recchia, F., additional, Sonzogni, A.A., additional, Weisshaar, D., additional, and Whitmore, K., additional

Published
2018
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4. Impact of triaxiality on the rotational structure of neutron-rich rhenium isotopes

Author

Reed, M.W., primary, Lane, G.J., additional, Dracoulis, G.D., additional, Kondev, F.G., additional, Carpenter, M.P., additional, Chowdhury, P., additional, Hota, S.S., additional, Hughes, R.O., additional, Janssens, R.V.F., additional, Lauritsen, T., additional, Lister, C.J., additional, Palalani, N., additional, Seweryniak, D., additional, Watanabe, H., additional, Zhu, S., additional, Jiang, W.G., additional, and Xu, F.R., additional

Published
2016
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6. Isomers and excitation modes in the gamma-soft nucleus 192Os

Author

Dracoulis, G.D., primary, Lane, G.J., additional, Byrne, A.P., additional, Watanabe, H., additional, Hughes, R.O., additional, Kondev, F.G., additional, Carpenter, M., additional, Janssens, R.V.F., additional, Lauritsen, T., additional, Lister, C.J., additional, Seweryniak, D., additional, Zhu, S., additional, Chowdhury, P., additional, Shi, Y., additional, and Xu, F.R., additional

Published
2013
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7. Long-lived three-quasiparticle isomers in 191Ir and 193Ir with triaxial deformation

Author

Dracoulis, G.D., primary, Lane, G.J., additional, Byrne, A.P., additional, Watanabe, H., additional, Hughes, R.O., additional, Palalani, N., additional, Kondev, F.G., additional, Carpenter, M., additional, Janssens, R.V.F., additional, Lauritsen, T., additional, Lister, C.J., additional, Seweryniak, D., additional, Zhu, S., additional, Chowdhury, P., additional, Shi, Y., additional, and Xu, F.R., additional

Published
2012
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8. How close to the symmetry is the nucleus 124Xe?

Author

Rainovski, G., primary, Pietralla, N., additional, Ahn, T., additional, Coquard, L., additional, Lister, C.J., additional, Janssens, R.V.F., additional, Carpenter, M.P., additional, Zhu, S., additional, Bettermann, L., additional, Jolie, J., additional, Rother, W., additional, Jolos, R.V., additional, and Werner, V., additional

Published
2010
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11. One-particle excitations outside the 54Ti semi-magic core: The 55V and 55Ti yrast structures

Author

Zhu, S., primary, Janssens, R.V.F., additional, Fornal, B., additional, Freeman, S.J., additional, Honma, M., additional, Broda, R., additional, Carpenter, M.P., additional, Deacon, A.N., additional, Kay, B.P., additional, Kondev, F.G., additional, Królas, W., additional, Kozemczak, J., additional, Larabee, A., additional, Lauritsen, T., additional, Liddick, S.N., additional, Lister, C.J., additional, Mantica, P.F., additional, Otsuka, T., additional, Pawłat, T., additional, Robinson, A., additional, Seweryniak, D., additional, Smith, J.F., additional, Steppenbeck, D., additional, Tomlin, B.E., additional, Wrzesiński, J., additional, and Wang, X., additional

Published
2007
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12. First evidence of fusion hindrance for a small Q-value system

Author

Jiang, C.L., primary, Back, B.B., additional, Esbensen, H., additional, Janssens, R.V.F., additional, Mişicu, Ş., additional, Rehm, K.E., additional, Collon, P., additional, Davids, C.N., additional, Greene, J., additional, Henderson, D.J., additional, Jisonna, L., additional, Kurtz, S., additional, Lister, C.J., additional, Notani, M., additional, Paul, M., additional, Pardo, R., additional, Peterson, D., additional, Seweryniak, D., additional, Shumard, B., additional, Tang, X.D., additional, Tanihata, I., additional, Wang, X., additional, and Zhu, S., additional

Published
2006
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13. Erratum to: “Changes in νg9/2 shape polarisation across the odd neutron-rich Cr isotopes” [Phys. Lett. B 622 (2005) 151]

Author

Deacon, A.N., primary, Freeman, S.J., additional, Janssens, R.V.F., additional, Xu, F.R., additional, Carpenter, M.P., additional, Calderin, I.R., additional, Chowdhury, P., additional, Hammond, N.J., additional, Lauritsen, T., additional, Lister, C.J., additional, Seweryniak, D., additional, Smith, J.F., additional, Tabor, S.L., additional, Varley, B.J., additional, and Zhu, S., additional

Published
2005
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14. Changes in νg9/2 shape polarisation across the odd neutron-rich Cr isotopes

Author

Deacon, A.N., primary, Freeman, S.J., additional, Janssens, R.V.F., additional, Xu, F.R., additional, Carpenter, M.P., additional, Calderin, I.R., additional, Chowdhury, P., additional, Hammond, N.J., additional, Lauritsen, T., additional, Lister, C.J., additional, Seweryniak, D., additional, Smith, J.F., additional, Tabor, S.L., additional, Varley, B.J., additional, and Zhu, S., additional

Published
2005
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15. Strength of octupole correlations in the actinides: contrasting behavior in the isotones 237U and 239Pu

Author

Zhu, S., primary, Janssens, R.V.F., additional, Lane, G.J., additional, Wiedenhöver, I., additional, Carpenter, M.P., additional, Ahmad, I., additional, Byrne, A.P., additional, Chowdhury, P., additional, Cline, D., additional, Deacon, A.N., additional, Dracoulis, G.D., additional, Freeman, S.J., additional, Hammond, N.J., additional, Jones, G.D., additional, Khoo, T.L., additional, Kondev, F.G., additional, Lauritsen, T., additional, Lister, C.J., additional, Macchiavelli, A.O., additional, Moore, E.F., additional, Seweryniak, D., additional, Smith, J.F., additional, and Wu, C.Y., additional

Published
2005
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16. The influence of νh11/2 occupancy on the magnetic moments of collective 21+ states in A∼100 fission fragments

Author

Smith, A.G, primary, Patel, D, additional, Simpson, G.S, additional, Wall, R.M, additional, Smith, J.F, additional, Onakanmi, O.J, additional, Ahmad, I, additional, Greene, J.P, additional, Carpenter, M.P, additional, Lauritsen, T, additional, Lister, C.J, additional, Janssens, R.V.F, additional, Kondev, F.G, additional, Seweryniak, D, additional, Gall, B.J.P, additional, Dorvaux, O, additional, and Roux, B, additional

Published
2004
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17. Identification of yrast high-K isomers in 177Lu and characterisation of 177mLu

Author

Dracoulis, G.D., primary, Kondev, F.G., additional, Lane, G.J., additional, Byrne, A.P., additional, Kibédi, T., additional, Ahmad, I., additional, Carpenter, M.P., additional, Freeman, S.J., additional, Janssens, R.V.F., additional, Hammond, N.J., additional, Lauritsen, T., additional, Lister, C.J., additional, Mukherjee, G., additional, Seweryniak, D., additional, Chowdhury, P., additional, Tandel, S.K., additional, and Gramer, R., additional

Published
2004
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18. Extending the region of triaxial superdeformation: candidate TSD bands in 174Hf

Author

Djongolov, M.K, primary, Hartley, D.J, additional, Riedinger, L.L, additional, Kondev, F.G, additional, Janssens, R.V.F, additional, Abu Saleem, K, additional, Ahmad, I, additional, Balabanski, D.L, additional, Carpenter, M.P, additional, Chowdhury, P, additional, Cullen, D.M, additional, Danchev, M, additional, Dracoulis, G.D, additional, El-Masri, H, additional, Goon, J, additional, Heinz, A, additional, Kaye, R.A, additional, Khoo, T.L, additional, Lauritsen, T, additional, Lister, C.J, additional, Moore, E.F, additional, Riley, M.A, additional, Seweryniak, D, additional, Shestakova, I, additional, Sletten, G, additional, Walker, P.M, additional, Wheldon, C, additional, Wiedenhöver, I, additional, Zeidan, O, additional, and Zhang, Jing-Ye, additional

Published
2003
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19. Radiative fusion from very symmetric reactions: the giant dipole resonance in the 179Au nucleus

Author

Camera, F, primary, Bracco, A, additional, Nanal, V, additional, Carpenter, M.P, additional, Della Vedova, F, additional, Leoni, S, additional, Million, B, additional, Mantovani, S, additional, Pignanelli, M, additional, Wieland, O, additional, Back, B.B, additional, Heinz, A.M, additional, Janssens, R.V.F, additional, Jenkins, D, additional, Khoo, T.L, additional, Kondev, F.G, additional, Lauritsen, T, additional, Lister, C.J, additional, McClintock, B, additional, Mitsuoka, S, additional, Moore, E.F, additional, Seweryniak, D, additional, Siemssen, R.H, additional, Van Swol, R.J, additional, Hofman, D, additional, Thoennessen, M, additional, Eisenman, K, additional, Heckman, P, additional, Seitz, J, additional, Varner, R, additional, Halbert, M, additional, Dioszegi, I, additional, and Lopez-Martens, A, additional

Published
2003
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20. Limits of the energy-spin phase space beyond the proton drip line: entry distributions of Pt and Au isobars

Author

Smith, M.B, primary, Cizewski, J.A, additional, Carpenter, M.P, additional, Kondev, F.G, additional, Khoo, T.L, additional, Lauritsen, T, additional, Janssens, R.V.F, additional, Abu Saleem, K, additional, Ahmad, I, additional, Amro, H, additional, Danchev, M, additional, Davids, C.N, additional, Hartley, D.J, additional, Heinz, A, additional, Lister, C.J, additional, Ma, W.C, additional, Poli, G.L, additional, Ressler, J.J, additional, Reviol, W, additional, Riedinger, L.L, additional, Seweryniak, D, additional, and Wiedenhöver, I, additional

Published
2003
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21. First observation of excited structures in neutron-deficient 179Hg: evidence for multiple shape coexistence

Author

Kondev, F.G, primary, Carpenter, M.P, additional, Janssens, R.V.F, additional, Lister, C.J, additional, Abu Saleem, K, additional, Ahmad, I, additional, Amro, H, additional, Caggiano, J, additional, Davids, C.N, additional, Heinz, A, additional, Herskind, B, additional, Khoo, T.L, additional, Lauritsen, T, additional, Ma, W.C, additional, Ressler, J.J, additional, Reviol, W, additional, Riedinger, L.L, additional, Sarantites, D.G, additional, Seweryniak, D, additional, Siem, S, additional, Sonzogni, A.A, additional, Varmette, P.G, additional, and Wiedenhöver, I, additional

Published
2002
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22. Identification of excited states in 140Dy

Author

Cullen, D.M, primary, Carpenter, M.P, additional, Davids, C.N, additional, Fletcher, A.M, additional, Freeman, S.J, additional, Janssens, R.V.F, additional, Kondev, F.G, additional, Lister, C.J, additional, Pattison, L.K, additional, Seweryniak, D, additional, Smith, J.F, additional, Bruce, A.M, additional, Abu Saleem, K, additional, Ahmad, I, additional, Heinz, A, additional, Khoo, T.L, additional, Moore, E.F, additional, Mukherjee, G, additional, Wheldon, C, additional, and Woehr, A, additional

Published
2002
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23. Isovector pairing in odd–odd N=Z 50Mn

Author

O'Leary, C.D., primary, Bentley, M.A., additional, Lenzi, S.M., additional, Martı́nez-Pinedo, G., additional, Warner, D.D., additional, Bruce, A.M., additional, Cameron, J.A., additional, Carpenter, M.P., additional, Davids, C.N., additional, Fallon, P., additional, Frankland, L., additional, Gelletly, W., additional, Janssens, R.V.F., additional, Joss, D.T., additional, Lister, C.J., additional, Regan, P.H., additional, Reiter, P., additional, Rubio, B., additional, Seweryniak, D., additional, Svensson, C.E., additional, Vincent, S.M., additional, and Williams, S.J., additional

Published
2002
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24. Identification of excited structures in proton unbound nuclei 173,175,177Au: shape co-existence and intruder bands

Author

Kondev, F.G., primary, Carpenter, M.P., additional, Janssens, R.V.F., additional, Abu Saleem, K., additional, Ahmad, I., additional, Amro, H., additional, Cizewski, J.A., additional, Danchev, M., additional, Davids, C.N., additional, Hartley, D.J., additional, Heinz, A., additional, Khoo, T.L., additional, Lauritsen, T., additional, Lister, C.J., additional, Ma, W.C., additional, Poli, G.L., additional, Ressler, J., additional, Reviol, W., additional, Riedinger, L.L., additional, Seweryniak, D., additional, Smith, M.B., additional, and Wiedenhöver, I., additional

Published
2001
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25. First evidence for triaxial superdeformation in 168Hf

Author

Amro, H., primary, Varmette, P.G., additional, Ma, W.C., additional, Herskind, B., additional, Hagemann, G.B., additional, Sletten, G., additional, Janssens, R.V.F., additional, Bergström, M., additional, Bracco, A., additional, Carpenter, M., additional, Domscheit, J., additional, Frattini, S., additional, Hartley, D.J., additional, Hübel, H., additional, Khoo, T.L., additional, Kondev, F., additional, Lauritsen, T., additional, Lister, C.J., additional, Million, B., additional, Ødegård, S.W., additional, Piercey, R.B., additional, Riedinger, L.L., additional, Schmidt, K.A., additional, Siem, S., additional, Wiedenhöver, I., additional, Wilson, J.N., additional, and Winger, J.A., additional

Published
2001
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26. Superdeformation in 91Tc

Author

Ideguchi, E., primary, Cederwall, B., additional, Wyss, R., additional, Bäck, T., additional, Lagergren, K., additional, Johnson, A., additional, Klamra, W., additional, Cederkäll, J., additional, Devlin, M., additional, Elson, J., additional, LaFosse, D.R., additional, Lerma, F., additional, Sarantites, D.G., additional, Tomov, V., additional, Hausmann, M., additional, Jungclaus, A., additional, Napoli, D.R., additional, Carpenter, M.P., additional, Janssens, R.V.F., additional, Kondev, F.G., additional, Lauritsen, T., additional, Lister, C.J., additional, Seweryniak, D., additional, Wiedenhoever, I., additional, Clark, R.M., additional, Fallon, P., additional, Lee, I.Y., additional, Macchiavelli, A.O., additional, and Macleod, R.W., additional

Published
2000
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27. E2 polarization charge in Sn

Author

Lipoglavšek, M., primary, Seweryniak, D., additional, Davids, C.N., additional, Fahlander, C., additional, Górska, M., additional, Janssens, R.V.F., additional, Nyberg, J., additional, Uusitalo, J., additional, Walters, W.B., additional, Ahmad, I., additional, Blomqvist, J., additional, Carpenter, M.P., additional, Cizewski, J.A., additional, Fischer, S.M., additional, Grawe, H., additional, Hackman, G., additional, Huhta, M., additional, Lister, C.J., additional, Nisius, D., additional, Poli, G., additional, Reiter, P., additional, Ressler, J., additional, Schwartz, J., additional, and Sonzogni, A., additional

Published
1998
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28. Competing T=0 and T=1 structures in the N=Z nucleus 6231Ga

Author

Vincent, S.M., primary, Regan, P.H., additional, Warner, D.D., additional, Bark, R.A., additional, Blumenthal, D., additional, Carpenter, M.P., additional, Davids, C.N., additional, Gelletly, W., additional, Janssens, R.V.F., additional, O'Leary, C.D., additional, Lister, C.J., additional, Simpson, J., additional, Seweryniak, D., additional, Saitoh, T., additional, Schwartz, J., additional, Törmänen, S., additional, Juillet, O., additional, Nowacki, F., additional, and Van Isacker, P., additional

Published
1998
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29. Identification of 181Hg and shape coexistence in odd-A Hg isotopes [Phys. Lett. B 410 (1997) 103]

Author

Varmette, P.G., primary, Shi, D.T., additional, Ma, W.C., additional, Ramayya, A.V., additional, Janssens, R.V.F., additional, Davids, C.N., additional, Hamilton, J.H., additional, Ahmad, I., additional, Amro, H., additional, Babu, B.R.S., additional, Back, B., additional, Bindra, K.S., additional, Blumenthal, D.J., additional, Brown, L.T., additional, Carpenter, M.P., additional, Croft, W.L., additional, Crowell, B., additional, Fischer, S.M., additional, Garg, U., additional, Henry, R.G., additional, Ishii, T., additional, Khoo, T.L., additional, Kormicki, J., additional, Lauritsen, T., additional, Lister, C.J., additional, Nisius, D., additional, Penttila, H., additional, Piercey, R.B., additional, Winger, J.A., additional, Zhu, S.J., additional, and Semmes, P.B., additional

Published
1998
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30. Identification of 181Hg and shape coexistence in odd-A Hg isotopes

Author

Varmette, P.G., primary, Shidot, D.T., additional, Ma, W.C., additional, Ramayya, A.V., additional, Janssens, R.V.F., additional, Davids, C.N., additional, Hamilton, J.H., additional, Ahmad, I., additional, Amro, H., additional, Babu, B.R.S., additional, Back, B., additional, Bindra, K.S., additional, Blumenthal, D.J., additional, Brown, L.T., additional, Carpenter, M.P., additional, Croft, W.L., additional, Crowell, B., additional, Fischer, S.M., additional, Garg, U., additional, Henry, R.G., additional, Ishii, T., additional, Khoo, T.L., additional, Kormicki, J., additional, Lauritsen, T., additional, Lister, C.J., additional, Nisius, D., additional, Penttila, H., additional, Piercey, R.B., additional, Winger, J.A., additional, Zhu, S.J., additional, and Semmes, P.B., additional

Published
1997
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31. Search for octupole deformation in neutron-rich Cs nuclei

Author

Rza̧ca-Urban, T., primary, Phillips, W.R., additional, Durell, J.L., additional, Urban, W., additional, Varley, B.J., additional, Pearson, C.J., additional, Shannon, J.A., additional, Ahmad, I., additional, Lister, C.J., additional, Morss, L.R., additional, Nash, K.L., additional, Williams, C.W., additional, Bentaleb, M., additional, Lubkiewicz, E., additional, and Schulz, N., additional

Published
1995
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32. The role of triaxiality in the ground states of even-even neutron-rich Ru isotopes

Author

Shannon, J.A., primary, Phillips, W.R., additional, Durell, J.L., additional, Varley, B.J., additional, Urban, W., additional, Pearson, C.J., additional, Ahmad, I., additional, Lister, C.J., additional, Morss, L.R., additional, Nash, K.L., additional, Williams, C.W., additional, Schulz, N., additional, Lubkiewicz, E., additional, and Bentaleb, M., additional

Published
1994
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33. The abrupt onset of collectivity in 87Mo

Author

Winter, Ch., primary, Blumenthal, D.J., additional, Chowdhury, P., additional, Crowell, B., additional, Ennis, P.J., additional, Lister, C.J., additional, Gross, C.J., additional, Hesse, J., additional, Jungclaus, A., additional, Lieb, K.P., additional, Eberth, J., additional, and Skoda, S., additional

Published
1991
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37. Isomers and excitation modes in the gamma-soft nucleus 192Os

Author

Dracoulis, G.D., Lane, G.J., Byrne, A.P., Watanabe, H., Hughes, R.O., Kondev, F.G., Carpenter, M., Janssens, R.V.F., Lauritsen, T., Lister, C.J., Seweryniak, D., Zhu, S., Chowdhury, P., Shi, Y., and Xu, F.R.

Subjects
*OSMIUM isotopes, *ISOMERS, *NUCLEAR physics, *NUCLEAR spin, *NUCLEAR reactions, *SPECTRUM analysis, *DEFORMATIONS (Mechanics), *ENERGY bands
Abstract

Abstract: New spectroscopic results for high-spin states in 192Os populated in deep-inelastic reactions include the identification of a 2-ns, 12+ isomeric state at 2865 keV and a 295-ns, 20+ state at 4580 keV and their associated sequences. The structures are interpreted as manifestations of maximal rotation alignment within the neutron and proton shells at oblate deformation. Rotational band members based on the long-lived, isomer are also identified for the first time. Configuration-constrained, potential-energy-surface calculations predict that other prolate multi-quasiparticle high-K states should exist at low energy. [Copyright &y& Elsevier]

Published
2013
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38. Long-lived three-quasiparticle isomers in 191Ir and 193Ir with triaxial deformation

Author

Dracoulis, G.D., Lane, G.J., Byrne, A.P., Watanabe, H., Hughes, R.O., Palalani, N., Kondev, F.G., Carpenter, M., Janssens, R.V.F., Lauritsen, T., Lister, C.J., Seweryniak, D., Zhu, S., Chowdhury, P., Shi, Y., and Xu, F.R.

Subjects
*IRIDIUM isotopes, *QUASIPARTICLES, *NUCLEAR isomers, *NUCLEAR shapes, *DEEP inelastic collisions, *NUCLEAR excitation
Abstract

Abstract: Deep-inelastic reactions have been used to populate high-spin states in the iridium isotopes. New results include the identification of particularly long-lived three-quasiparticle isomers in 191Ir and 193Ir, with mean-lives of 8.2(7) s and 180(3) μs respectively, decaying into newly identified states of the proton bands and into other structures. Spins and parities of are suggested for both, consistent with coupling of the proton to the two-neutron excitations in the cores. These and other configurations are discussed in the context of configuration constrained potential-energy-surface calculations. All calculated intrinsic states are expected to be associated with triaxial shapes and the extreme isomerism observed is attributed to spin-trapping rather than K-hindrance. [Copyright &y& Elsevier]

Published
2012
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39. How close to the symmetry is the nucleus 124Xe?

Author

Rainovski, G., Pietralla, N., Ahn, T., Coquard, L., Lister, C.J., Janssens, R.V.F., Carpenter, M.P., Zhu, S., Bettermann, L., Jolie, J., Rother, W., Jolos, R.V., and Werner, V.

Subjects
*SYMMETRY (Physics), *XENON isotopes, *COULOMB excitation, *NUCLEAR cross sections, *GAMMA rays, *GAMMASPHERE, *QUANTUM theory
Abstract

Abstract: Excited states in 124Xe have been studied via the 12C(124Xe, 124Xe∗) Coulomb excitation reaction. Their population cross-sections relative to the state have been determined from the γ-ray yields observed with Gammasphere. More than twenty absolute E2 strengths for seven off-yrast, low-spin states of 124Xe have been deduced for the first time. The absolute values indicate pronounced symmetry, even for the off-yrast states with high quantum number τ, while the symmetry is substantially broken. [Copyright &y& Elsevier]

Published
2010
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40. Evolution of the one-phonon mixed-symmetry state in isotones as a local measure for the proton–neutron quadrupole interaction

Author

Ahn, T., Coquard, L., Pietralla, N., Rainovski, G., Costin, A., Janssens, R.V.F., Lister, C.J., Carpenter, M., Zhu, S., and Heyde, K.

Subjects
*NEUTRON-proton interactions, *COULOMB excitation, *PHONONS, *SYMMETRY (Physics), *ISOTONE shift, *XENON, *ENERGY levels (Quantum mechanics), *PHENOMENOLOGICAL theory (Physics)
Abstract

Abstract: An inverse kinematics Coulomb excitation experiment was performed to obtain absolute E2 and M1 transition strengths in 134Xe. The measured transition strengths indicate that the state of 134Xe is the dominant fragment of the one-phonon mixed-symmetry state. Comparing the energy of the mixed-symmetry state in 134Xe to that of the levels in the isotonic chain indicates that the separation in energy between the fully-symmetric state and the level increases as a function of the number of proton pairs outside the shell closure. This behavior can be understood as resulting from the mixing of the basic components of a two-fluid quantum system. A phenomenological fit based on this concept was performed. It provides the first experimental estimate of the strength of the proton–neutron quadrupole interaction derived from nuclear collective states with symmetric and antisymmetric nature. [Copyright &y& Elsevier]

Published
2009
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41. One-particle excitations outside the 54Ti semi-magic core: The 55V and 55Ti yrast structures

Author

Zhu, S., Janssens, R.V.F., Fornal, B., Freeman, S.J., Honma, M., Broda, R., Carpenter, M.P., Deacon, A.N., Kay, B.P., Kondev, F.G., Królas, W., Kozemczak, J., Larabee, A., Lauritsen, T., Liddick, S.N., Lister, C.J., Mantica, P.F., Otsuka, T., Pawłat, T., and Robinson, A.

Subjects
*PARTICLES (Nuclear physics), *ISOTOPES, *TITANIUM, *CALCIUM
Abstract

Abstract: The level structures of 55V and 55Ti, the two nuclei with a single nucleon outside the semi-magic 54 22Ti32 core, have been investigated in order to provide new tests of full pf-shell calculations with the GXPF1A interaction. The addition of a proton does not appear to affect the shell gap significantly, although comparisons between calculations and experiment at high spins () indicate the need for a larger model space for an accurate description of the data in this regime. The energy separation between the and orbitals in neutron-rich Ti isotopes is not large enough to result in an shell gap. However, comparisons between the 55Ti data and the calculations argue for the presence of a sizable gap in 54Ca. [Copyright &y& Elsevier]

Published
2007
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42. Changes in shape polarisation across the odd neutron-rich Cr isotopes

Author

Deacon, A.N., Freeman, S.J., Janssens, R.V.F., Xu, F.R., Carpenter, M.P., Calderin, I.R., Chowdhury, P., Hammond, N.J., Lauritsen, T., Lister, C.J., Seweryniak, D., Smith, J.F., Tabor, S.L., Varley, B.J., and Zhu, S.

Subjects
*PARTICLES (Nuclear physics), *SPIN excitations, *NUCLEAR excitation, *NUCLEAR physics
Abstract

Abstract: Excited states in 57Cr have been populated to high spin in the reaction at a beam energy of 130 MeV. A regular sequence of stretched quadrupole transitions has been established above the yrast level. This sequence is interpreted as a rotational band associated with prolate deformation induced by the excitation of the odd neutron into the orbital. Total Routhian surface calculations, which follow this configuration to high spin, reproduce the observed features of the band. They are also able to account for a similar, but less well developed structure in 55Cr. In contrast, the isomeric yrast state in 59Cr appears to be a band-head state dominated by the configuration, which is favoured at oblate deformations. Such a marked difference presents a significant challenge for theoretical descriptions, but is consistent with features exhibited by the low-lying negative-parity states in 59Cr. [Copyright &y& Elsevier]

Published
2005
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43. Strength of octupole correlations in the actinides: contrasting behavior in the isotones 237U and 239Pu

Author

Zhu, S., Janssens, R.V.F., Lane, G.J., Wiedenhöver, I., Carpenter, M.P., Ahmad, I., Byrne, A.P., Chowdhury, P., Cline, D., Deacon, A.N., Dracoulis, G.D., Freeman, S.J., Hammond, N.J., Jones, G.D., Khoo, T.L., Kondev, F.G., Lauritsen, T., Lister, C.J., Macchiavelli, A.O., and Moore, E.F.

Subjects
*PARTICLES (Nuclear physics), *NUCLEAR physics, *NEUTRONS, *ATOMS
Abstract

Abstract: A study of high spin states in the odd-neutron isotones 239Pu and 237U is reported. Striking differences were found in the high-spin properties of rotational bands built on the ground states in these two nuclei. These differences mirror those observed in the even–even Pu and U immediate neighbors and appear to be related to the strength of octupole correlations. [Copyright &y& Elsevier]

Published
2005
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44. The influence of <f>νh11/2</f> occupancy on the magnetic moments of collective <f>21+</f> states in <f>A∼100</f> fission fragments

Author

Smith, A.G., Patel, D., Simpson, G.S., Wall, R.M., Smith, J.F., Onakanmi, O.J., Ahmad, I., Greene, J.P., Carpenter, M.P., Lauritsen, T., Lister, C.J., Janssens, R.V.F., Kondev, F.G., Seweryniak, D., Gall, B.J.P., Dorvaux, O., and Roux, B.

Subjects
*NUCLEAR fission, *ANGULAR correlations (Nuclear physics), *NUCLEAR reactions, *PAIRING correlations (Nuclear physics)
Abstract

The magnetic moments of Iπ=21+ states in even–even A∼100 fission fragments have been measured using the Gammasphere array, using the technique of time-integral perturbed angular correlations. The data are interpreted within the context of the interacting boson model (IBA2) leading to the suggestion of a strong νh11/2 component in the deformed 21+ states of this region. [Copyright &y& Elsevier]

Published
2004
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45. Identification of yrast high-<f>K</f> isomers in 177Lu and characterisation of <f>177mLu</f>

Author

Dracoulis, G.D., Kondev, F.G., Lane, G.J., Byrne, A.P., Kibédi, T., Ahmad, I., Carpenter, M.P., Freeman, S.J., Janssens, R.V.F., Hammond, N.J., Lauritsen, T., Lister, C.J., Mukherjee, G., Seweryniak, D., Chowdhury, P., Tandel, S.K., and Gramer, R.

Subjects
*NUCLEAR isomers, *DECAY schemes (Radioactivity), *PARTICLES (Nuclear physics), *CONFIGURATIONS (Geometry)
Abstract

Long-lived high-K states have been identified in 177Lu, including an isomer with τ>10 μs, placed at 3530 keV and associated with the yrast Kπ=39/2−, 5-quasiparticle state predicted in multi-quasiparticle-state calculations. The γ-decay of the isomer exposes the rotational band based on the 160-day 23/2− isomer, 177mLu, with band properties which support its proposed configuration. A 90-ns isomer at 1325 keV is associated with the predicted 3-quasiparticle Kπ=25/2+ state while a 5-quasiparticle 33/2+, 902-ns isomer with highly-hindered decays is identified at 2771 keV. Both exhibit rotational bands whose properties are used to support the assigned configurations. The possibility that the Kπ=39/2− isomer found in this work should be identified with a β-decaying isomer, proposed recently to populate the 51-min 37/2− isomer in 177Hf, is discussed in terms of the implied logft values, configuration changes, and hindrances for K-forbidden γ-decays. [Copyright &y& Elsevier]

Published
2004
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46. Radiative fusion from very symmetric reactions: the giant dipole resonance in the 179Au nucleus

Author

Camera, F., Bracco, A., Nanal, V., Carpenter, M.P., Della Vedova, F., Leoni, S., Million, B., Mantovani, S., Pignanelli, M., Wieland, O., Back, B.B., Heinz, A.M., Janssens, R.V.F., Jenkins, D., Khoo, T.L., Kondev, F.G., Lauritsen, T., Lister, C.J., McClintock, B., and Mitsuoka, S.

Subjects
*SPECTRUM analysis, *HIGH energy radiotherapy
Abstract

The spectra of high-energy γ rays emitted by the Giant Dipole Resonance (GDR) built on moderately excited states associated with the evaporation of 0, 1 and 2 nucleons were measured in the 90Zr + 89Y symmetric fusion reaction. The radiative fusion data suggest statistical emission from the compound nucleus. In addition, the analysis of the high-energy γ-ray spectra associated with the different evaporation channels at the present temperature of 0.7 MeV and spin range 15–20 ℎ show a fairly narrow width of 5.0±0.35 MeV. This value is smaller than what would be expected in a nucleus where shell effects do not play a role. [Copyright &y& Elsevier]

Published
2003
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47. Identification of excited states in 140Dy

Author

Cullen, D.M., Carpenter, M.P., Davids, C.N., Fletcher, A.M., Freeman, S.J., Janssens, R.V.F., Kondev, F.G., Lister, C.J., Pattison, L.K., Seweryniak, D., Smith, J.F., Bruce, A.M., Abu Saleem, K., Ahmad, I., Heinz, A., Khoo, T.L., Moore, E.F., Mukherjee, G., Wheldon, C., and Woehr, A.

Subjects
*NUCLEAR isomers, *RADIOACTIVE decay
Abstract

Excited structures in the proton-rich nucleus 140Dy have been established following the decay of an 8− isomer. The excitation energy of the isomer is established to be 2.16 MeV with a half-life of 7.3±1.5 μs. The isomer decays into the yrast line at the 8+ state, revealing a rotational band with a deduced deformation of β2=0.24(3). The isotope 140Dy is the daughter of the deformed proton emitter 141Ho. The new information obtained here supports the role of deformation in proton emission and the previous assignments of single-particle configurations to the two proton emitting states in 141Ho. In addition, the reduced hindrance factor measured for the isomer is consistent with the trend observed in the N=74 isotones. [Copyright &y& Elsevier]

Published
2002
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48. First observation of excited structures in neutron-deficient 179Hg: evidence for multiple shape coexistence

Author

Kondev, F.G., Carpenter, M.P., Janssens, R.V.F., Lister, C.J., Abu Saleem, K., Ahmad, I., Amro, H., Caggiano, J., Davids, C.N., Heinz, A., Herskind, B., Khoo, T.L., Lauritsen, T., Ma, W.C., Ressler, J.J., Reviol, W., Riedinger, L.L., Sarantites, D.G., Seweryniak, D., and Siem, S.

Subjects
*EXCITED state chemistry, *GAMMASPHERE, *SPECTROMETERS
Abstract

Excited structures in the neutron-deficient nucleus 179Hg have been established for the first time using the Gammasphere spectrometer in conjunction with the fragment mass analyzer. Competing states originating from three different minima associated with nearly spherical, oblate, and prolate deformations were found. This result can be contrasted with the situation in heavier odd-mass Hg isotopes where only two minima (oblate and prolate) have been seen. The implications of these three shapes at low spin and excitation energy are discussed in the general context of shape coexistence in this mass region. [Copyright &y& Elsevier]

Published
2002
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