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20 results on '"Rigby, S. V."'

1. Transition probability studies in ¹⁷⁵Au

Author

Grahn, T., Watkins, H., Joss, D. T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R.-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kröll, Thorsten, Krücken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, Th., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Sarén, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., Venhart, M., Grahn, T., Watkins, H., Joss, D. T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R.-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kröll, Thorsten, Krücken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, Th., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Sarén, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., and Venhart, M.

Abstract

Transition probabilities have been measured between the low-lying yrast states in ¹⁷⁵Au by employing the recoil distance Doppler-shift method combined with the selective recoil-decay tagging technique. Reduced transition probabilities and magnitudes of transition quadrupole moments have been extracted from measured lifetimes allowing dramatic changes in nuclear structure within a low excitation-energy range to probed. The transition quadrupole moment data are discussed in terms of available systematics as a function of atomic number and aligned angular momentum.

Published
2024

2. Transition probability studies in ¹⁷⁵Au

Author

Grahn, T., Watkins, H., Joss, D. T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kröll, Thorsten, Krücken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, Th., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Sarén, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., Venhart, M., Grahn, T., Watkins, H., Joss, D. T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kröll, Thorsten, Krücken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, Th., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Sarén, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., and Venhart, M.

Abstract

Transition probabilities have been measured between the low-lying yrast states in ¹⁷⁵Au by employing the recoil distance Doppler-shift method combined with the selective recoil-decay tagging technique. Reduced transition probabilities and magnitudes of transition quadrupole moments have been extracted from measured lifetimes allowing dramatic changes in nuclear structure within a low excitation-energy range to probed. The transition quadrupole moment data are discussed in terms of available systematics as a function of atomic number and aligned angular momentum.

Published
2024

3. Transition probability studies in ¹⁷⁵Au

Author

Grahn, T., Watkins, H., Joss, D. T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R.-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kröll, Thorsten, Krücken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, Th., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Sarén, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., Venhart, M., Grahn, T., Watkins, H., Joss, D. T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R.-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kröll, Thorsten, Krücken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, Th., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Sarén, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., and Venhart, M.

Abstract

Transition probabilities have been measured between the low-lying yrast states in ¹⁷⁵Au by employing the recoil distance Doppler-shift method combined with the selective recoil-decay tagging technique. Reduced transition probabilities and magnitudes of transition quadrupole moments have been extracted from measured lifetimes allowing dramatic changes in nuclear structure within a low excitation-energy range to probed. The transition quadrupole moment data are discussed in terms of available systematics as a function of atomic number and aligned angular momentum.

Published
2024

4. Transition probability studies in ¹⁷⁵Au

Author

Grahn, T., Watkins, H., Joss, D. T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R.-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kröll, Thorsten, Krücken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, Th., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Sarén, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., Venhart, M., Grahn, T., Watkins, H., Joss, D. T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R.-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kröll, Thorsten, Krücken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, Th., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Sarén, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., and Venhart, M.

Abstract

Transition probabilities have been measured between the low-lying yrast states in ¹⁷⁵Au by employing the recoil distance Doppler-shift method combined with the selective recoil-decay tagging technique. Reduced transition probabilities and magnitudes of transition quadrupole moments have been extracted from measured lifetimes allowing dramatic changes in nuclear structure within a low excitation-energy range to probed. The transition quadrupole moment data are discussed in terms of available systematics as a function of atomic number and aligned angular momentum.

Published
2024

5. Do nuclei go pear-shaped? Coulomb excitation of Rn-220 and Ra-224 at REX-ISOLDE (CERN)

Author

University of Helsinki, Helsinki Institute of Physics, Scheck, M., Gaffney, L. P., Butler, P. A., Hayes, A. B., Wenander, F., Albers, M., Bastin, B., Bauer, C., Blazhev, A., Boenig, S., Bree, N., Cederkall, J., Chupp, T., Cline, D., Cocolios, T. E., Davinson, T., De Witte, H., Diriken, J., Grahn, T., Herzan, A., Huyse, M., Jenkins, D. G., Joss, D. T., Kesteloot, N., Konki, J., Kowalczyk, M., Kroell, Th., Kwan, E., Lutter, R., Moschner, K., Napiorkowski, P., Pakarinen, J., Pfeiffer, M., Radeck, D., Reiter, P., Reynders, K., Rigby, S. V., Robledo, L. M., Rudigier, M., Sambi, S., Seidlitz, M., Siebeck, B., Stora, T., Thoele, P., Van Duppen, P., Vermeulen, M. J., von Schmid, M., Voulot, D., Warr, N., Wimmer, K., Wrzosek-Lipska, K., Wu, C. Y., Zielinska, M., University of Helsinki, Helsinki Institute of Physics, Scheck, M., Gaffney, L. P., Butler, P. A., Hayes, A. B., Wenander, F., Albers, M., Bastin, B., Bauer, C., Blazhev, A., Boenig, S., Bree, N., Cederkall, J., Chupp, T., Cline, D., Cocolios, T. E., Davinson, T., De Witte, H., Diriken, J., Grahn, T., Herzan, A., Huyse, M., Jenkins, D. G., Joss, D. T., Kesteloot, N., Konki, J., Kowalczyk, M., Kroell, Th., Kwan, E., Lutter, R., Moschner, K., Napiorkowski, P., Pakarinen, J., Pfeiffer, M., Radeck, D., Reiter, P., Reynders, K., Rigby, S. V., Robledo, L. M., Rudigier, M., Sambi, S., Seidlitz, M., Siebeck, B., Stora, T., Thoele, P., Van Duppen, P., Vermeulen, M. J., von Schmid, M., Voulot, D., Warr, N., Wimmer, K., Wrzosek-Lipska, K., Wu, C. Y., and Zielinska, M.

Abstract

The IS475 collaboration conducted Coulomb-excitation experiments with post-accelerated radioactive Rn-220 and Ra-224 beams at the REX-ISOLDE facility. The beam particles (E-beam: 2.83 MeV/u) were Coulomb excited using Ni-60, Cd-14, and Sn-120 scattering targets. De-excitation gamma-rays were detected employing the Miniball array and scattered particles were detected in a silicon detector. Exploiting the Coulomb-excitation code GOSIA for each nucleus several matrix elements could be obtained from the measured gamma-ray yields. The extracted <3 parallel to E3 parallel to 0(+)> matrix element allows for the conclusion that, while Rn-220 represents an octupole vibrational system, Ra-224 has already substantial octupole correlations in its ground state. This finding has i(m)plications for the search of CP-violating Schiff moments in the atomic systems of the adjacent odd-mass nuclei.

Published
2015

6. Determination of the B(E3, 0(+) -> 3(-))-excitation strength in octupole-correlated nuclei near A approximate to 224 by the means of Coulomb excitation at REX-ISOLDE

Author

University of Helsinki, Helsinki Institute of Physics, Scheck, M., Gaffney, L. P., Butler, P. A., Hayes, A. B., Wenander, F., Albers, M., Bastin, B., Bauer, C., Blazhev, A., Boenig, S., Bree, N., Cederkaell, J., Chupp, T., Cline, D., Cocolios, T. E., Davinson, T., De Witte, H., Diriken, J., Grahn, T., Gregor, E. T., Herzan, A., Huyse, M., Jenkins, D. G., Joss, D. T., Kesteloot, N., Konki, J., Kowalczyk, M., Kroell, Th., Kwan, E., Lutter, R., Moschner, K., Napiorkowski, P., Pakarinen, J., Pfeiffer, M., Radeck, D., Reiter, P., Reynders, K., Rigby, S. V., Robledo, L. M., Rudigier, M., Sambi, S., Seidlitz, M., Siebeck, B., Stora, T., Thoele, P., Van Duppen, P., Vermeulen, M. J., von Schmid, M., Voulot, D., Warr, N., Wimmer, K., Wrzosek-Lipska, K., Wu, C. Y., Zielinska, M., University of Helsinki, Helsinki Institute of Physics, Scheck, M., Gaffney, L. P., Butler, P. A., Hayes, A. B., Wenander, F., Albers, M., Bastin, B., Bauer, C., Blazhev, A., Boenig, S., Bree, N., Cederkaell, J., Chupp, T., Cline, D., Cocolios, T. E., Davinson, T., De Witte, H., Diriken, J., Grahn, T., Gregor, E. T., Herzan, A., Huyse, M., Jenkins, D. G., Joss, D. T., Kesteloot, N., Konki, J., Kowalczyk, M., Kroell, Th., Kwan, E., Lutter, R., Moschner, K., Napiorkowski, P., Pakarinen, J., Pfeiffer, M., Radeck, D., Reiter, P., Reynders, K., Rigby, S. V., Robledo, L. M., Rudigier, M., Sambi, S., Seidlitz, M., Siebeck, B., Stora, T., Thoele, P., Van Duppen, P., Vermeulen, M. J., von Schmid, M., Voulot, D., Warr, N., Wimmer, K., Wrzosek-Lipska, K., Wu, C. Y., and Zielinska, M.

Published
2014

7. Shape coexistence in neutron-deficient Hg isotopes studied via lifetime measurements in Hg-184,Hg-186 and two-state mixing calculations

Author

Gaffney, L. P., Hackstein, M., Page, R. D., Grahn, T., Scheck, M., Butler, P. A., Bertone, P. F., Bree, N., Carroll, R. J., Carpenter, M. P., Chiara, C. J., Dewald, A., Filmer, F., Fransen, C., Huyse, M., Janssens, R. V. F., Joss, D. T., Julin, R., Kondev, F. G., Nieminen, P., Pakarinen, J., Rigby, S. V., Rother, W., Van Duppen, P., Watkins, H. V., Wrzosek-Lipska, K., Zhu, S., Gaffney, L. P., Hackstein, M., Page, R. D., Grahn, T., Scheck, M., Butler, P. A., Bertone, P. F., Bree, N., Carroll, R. J., Carpenter, M. P., Chiara, C. J., Dewald, A., Filmer, F., Fransen, C., Huyse, M., Janssens, R. V. F., Joss, D. T., Julin, R., Kondev, F. G., Nieminen, P., Pakarinen, J., Rigby, S. V., Rother, W., Van Duppen, P., Watkins, H. V., Wrzosek-Lipska, K., and Zhu, S.

Abstract

The neutron-deficient mercury isotopes, Hg-184,Hg-186, were studied with the recoil distance Doppler-shift method using the Gammasphere array and the Koln plunger device. The differential decay curve method was employed to determine the lifetimes of the yrast states in Hg-184,Hg-186. An improvement on previously measured values of yrast states up to 8(+) is presented as well as first values for the 9(3) state in Hg-184 and 10(+) state in 186Hg. B(E2) values are calculated and compared to a two-state mixing model which utilizes the variable moment of inertia model, allowing for extraction of spin-dependent mixing strengths and amplitudes.

Published
2014

8. Shape coexistence in neutron-deficient Hg isotopes studied via lifetime measurements in Hg-184,Hg-186 and two-state mixing calculations

Author

Gaffney, L. P., Hackstein, M., Page, R. D., Grahn, T., Scheck, M., Butler, P. A., Bertone, P. F., Bree, N., Carroll, R. J., Carpenter, M. P., Chiara, C. J., Dewald, A., Filmer, F., Fransen, C., Huyse, M., Janssens, R. V. F., Joss, D. T., Julin, R., Kondev, F. G., Nieminen, P., Pakarinen, J., Rigby, S. V., Rother, W., Van Duppen, P., Watkins, H. V., Wrzosek-Lipska, K., Zhu, S., Gaffney, L. P., Hackstein, M., Page, R. D., Grahn, T., Scheck, M., Butler, P. A., Bertone, P. F., Bree, N., Carroll, R. J., Carpenter, M. P., Chiara, C. J., Dewald, A., Filmer, F., Fransen, C., Huyse, M., Janssens, R. V. F., Joss, D. T., Julin, R., Kondev, F. G., Nieminen, P., Pakarinen, J., Rigby, S. V., Rother, W., Van Duppen, P., Watkins, H. V., Wrzosek-Lipska, K., and Zhu, S.

Abstract

The neutron-deficient mercury isotopes, Hg-184,Hg-186, were studied with the recoil distance Doppler-shift method using the Gammasphere array and the Koln plunger device. The differential decay curve method was employed to determine the lifetimes of the yrast states in Hg-184,Hg-186. An improvement on previously measured values of yrast states up to 8(+) is presented as well as first values for the 9(3) state in Hg-184 and 10(+) state in 186Hg. B(E2) values are calculated and compared to a two-state mixing model which utilizes the variable moment of inertia model, allowing for extraction of spin-dependent mixing strengths and amplitudes.

Published
2014

9. Electromagnetic transition strengths in Te-109(52)

Author

Procter, M. G., Cullen, D. M., Scholey, C., Ruotsalainen, P., Angus, L., Back, T., Cederwall, B., Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Liotta, R., Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Saren, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, C., Xu, F. R., Procter, M. G., Cullen, D. M., Scholey, C., Ruotsalainen, P., Angus, L., Back, T., Cederwall, B., Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Liotta, R., Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Saren, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, C., and Xu, F. R.

Abstract

Lifetime measurements have been made in the neutron-deficient nucleus Te-109 using the coincident recoil distance Doppler-shift method. The experimental B(E2) values have been compared with state-of-the-art shell-model calculations using the monopole-corrected realistic charge-dependent Bonn nucleon-nucleon potential. Lifetimes in the vh(11/2) band are consistent with an interpretation based on the deformation driving properties of a single valence neutron outside of the even-even tellurium core and highlight the unexpected presence of collective behavior as the N = 50 shell closure is approached. Lifetime measurements for the low-lying positive-parity states also appear to correlate well with shell-model calculations. In addition, a comparison with the proton-unbound nucleus I-109 suggests that the presence of a single decoupled valence proton affects the total measured B(E2) strengths in a manner that is not currently well understood.

Published
2012

10. Electromagnetic transition strengths in Te-109(52)

Author

Procter, M. G., Cullen, D. M., Scholey, C., Ruotsalainen, P., Angus, L., Back, T., Cederwall, B., Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Liotta, R., Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Saren, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, C., Xu, F. R., Procter, M. G., Cullen, D. M., Scholey, C., Ruotsalainen, P., Angus, L., Back, T., Cederwall, B., Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Liotta, R., Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Saren, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, C., and Xu, F. R.

Abstract

Lifetime measurements have been made in the neutron-deficient nucleus Te-109 using the coincident recoil distance Doppler-shift method. The experimental B(E2) values have been compared with state-of-the-art shell-model calculations using the monopole-corrected realistic charge-dependent Bonn nucleon-nucleon potential. Lifetimes in the vh(11/2) band are consistent with an interpretation based on the deformation driving properties of a single valence neutron outside of the even-even tellurium core and highlight the unexpected presence of collective behavior as the N = 50 shell closure is approached. Lifetime measurements for the low-lying positive-parity states also appear to correlate well with shell-model calculations. In addition, a comparison with the proton-unbound nucleus I-109 suggests that the presence of a single decoupled valence proton affects the total measured B(E2) strengths in a manner that is not currently well understood.

Published
2012

11. Anomalous transition strength in the proton-unbound nucleus (109)(53)I56

Author

Procter, M. G., Cullen, D. M., Scholey, C., Ruotsalainen, P., Angus, L., Bäck, Torbjörn, Cederwall, Bo, Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Liotta, Roberto, Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Saren, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, Chong, Xu, F. R., Procter, M. G., Cullen, D. M., Scholey, C., Ruotsalainen, P., Angus, L., Bäck, Torbjörn, Cederwall, Bo, Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Liotta, Roberto, Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Saren, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, Chong, and Xu, F. R.

Abstract

A lifetime measurement has been made for the first excited 11/2(+) state in the proton-unbound nucleus (109)(53)I56 using the recoil-distance Doppler-shift method in conjunction with recoil-proton tagging. The experimental reduced transition probability is considerably smaller than the prediction of theoretical shell-model calculations using the CD-Bonn nucleon-nucleon potential. The discrepancy between the theoretical and experimental reduced transition strengths in this work most likely arises from the inability of the current shell-model calculations to accurately account for the behavior of the unbound nuclear states., QC 20111212

Published
2011
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12. Lifetime measurement in the proton-unbound nucleus 109I

Author

Procter, M. G., Cullen, D. M., Ruotsalainen, P., Scholey, C., Angus, L., Bäck, Torbjörn, Cederwall, Bo, Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Sarén, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, C., Xu, F. R., Procter, M. G., Cullen, D. M., Ruotsalainen, P., Scholey, C., Angus, L., Bäck, Torbjörn, Cederwall, Bo, Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Sarén, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, C., and Xu, F. R.

Abstract

The Recoil-Distance Doppler-shift method has been combined with Recoil-Decay Tagging for the first time to measure a lifetime in the proton-unbound nucleus 109I. The lifetime value was determined using the Differential Decay-Curve method in singles mode. The result has been compared to theoretical shell-model calculations in order to better understand the nature of unbound valence nucleons at the proton drip line., QC 20140908

Published
2011
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13. Lifetime measurements probing triple shape coexistence in Au-175

Author

Watkins, H., Joss, D. T., Grahn, T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kroell, T., Kruecken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, T., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Saren, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., Venhart, M., Watkins, H., Joss, D. T., Grahn, T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kroell, T., Kruecken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, T., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Saren, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., and Venhart, M.

Abstract

Lifetimes of the low-lying excited states in the very neutron-deficient nucleus Au-175 have been measured by the recoil-distance Doppler-shift method using gamma-ray spectra obtained with the recoil-decay tagging technique. Transition quadrupole moments and reduced transition probabilities extracted for this odd-Z nucleus indicate the existence of three different shapes and the competition between collective and noncollective structures.

Published
2011

14. Anomalous transition strength in the proton-unbound nucleus (109)(53)I56

Author

Procter, M. G., Cullen, D. M., Scholey, C., Ruotsalainen, P., Angus, L., Back, T., Cederwall, B., Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Liotta, R., Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Saren, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, C., Xu, F. R., Procter, M. G., Cullen, D. M., Scholey, C., Ruotsalainen, P., Angus, L., Back, T., Cederwall, B., Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Liotta, R., Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Saren, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, C., and Xu, F. R.

Abstract

A lifetime measurement has been made for the first excited 11/2(+) state in the proton-unbound nucleus (109)(53)I56 using the recoil-distance Doppler-shift method in conjunction with recoil-proton tagging. The experimental reduced transition probability is considerably smaller than the prediction of theoretical shell-model calculations using the CD-Bonn nucleon-nucleon potential. The discrepancy between the theoretical and experimental reduced transition strengths in this work most likely arises from the inability of the current shell-model calculations to accurately account for the behavior of the unbound nuclear states. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

Published
2011

15. Lifetime measurements probing triple shape coexistence in Au-175

Author

Watkins, H., Joss, D. T., Grahn, T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kroell, T., Kruecken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, T., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Saren, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., Venhart, M., Watkins, H., Joss, D. T., Grahn, T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kroell, T., Kruecken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, T., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Saren, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., and Venhart, M.

Abstract

Lifetimes of the low-lying excited states in the very neutron-deficient nucleus Au-175 have been measured by the recoil-distance Doppler-shift method using gamma-ray spectra obtained with the recoil-decay tagging technique. Transition quadrupole moments and reduced transition probabilities extracted for this odd-Z nucleus indicate the existence of three different shapes and the competition between collective and noncollective structures.

Published
2011

16. Anomalous transition strength in the proton-unbound nucleus (109)(53)I56

Author

Procter, M. G., Cullen, D. M., Scholey, C., Ruotsalainen, P., Angus, L., Back, T., Cederwall, B., Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Liotta, R., Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Saren, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, C., Xu, F. R., Procter, M. G., Cullen, D. M., Scholey, C., Ruotsalainen, P., Angus, L., Back, T., Cederwall, B., Dewald, A., Fransen, C., Grahn, T., Greenlees, P. T., Hackstein, M., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Liotta, R., Lumley, N. M., Mason, P. J. R., Nieminen, P., Nyman, M., Pakarinen, J., Pissulla, T., Peura, P., Rahkila, P., Revill, J., Rigby, S. V., Rother, W., Sandzelius, M., Saren, J., Sorri, J., Taylor, M. J., Uusitalo, J., Wady, P., Qi, C., and Xu, F. R.

Abstract

A lifetime measurement has been made for the first excited 11/2(+) state in the proton-unbound nucleus (109)(53)I56 using the recoil-distance Doppler-shift method in conjunction with recoil-proton tagging. The experimental reduced transition probability is considerably smaller than the prediction of theoretical shell-model calculations using the CD-Bonn nucleon-nucleon potential. The discrepancy between the theoretical and experimental reduced transition strengths in this work most likely arises from the inability of the current shell-model calculations to accurately account for the behavior of the unbound nuclear states. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

Published
2011

17. Nuclear shapes of highly deformed bands in 171,172 Hf and neighboring Hf isotopes

Author

Zhang, Y.C., Ma, W. C., Afanasjev, A., Hagemann, Gudrun Bertram, Begnaud, J., Carpenter, M. P., Chowdhury, P., Cullen, D. M., Djongolov, M. K., Hartley, D. J., Janssens, R.V. F., Khoo, T. L., Kondev, E. G., Lauritsen, T., Moore, E.F., Ngijoi-Yogo, E., Ødegård, S., Riedinger, L. L., Rigby, S. V., Roux, D. G., Scholes, D. T., Yadav, R. B., Zhang, Jing-Ye, Zhu, S., Zhang, Y.C., Ma, W. C., Afanasjev, A., Hagemann, Gudrun Bertram, Begnaud, J., Carpenter, M. P., Chowdhury, P., Cullen, D. M., Djongolov, M. K., Hartley, D. J., Janssens, R.V. F., Khoo, T. L., Kondev, E. G., Lauritsen, T., Moore, E.F., Ngijoi-Yogo, E., Ødegård, S., Riedinger, L. L., Rigby, S. V., Roux, D. G., Scholes, D. T., Yadav, R. B., Zhang, Jing-Ye, and Zhu, S.

Abstract

Udgivelsesdato: 28 Dec.

Published
2008

18. Nuclear shapes of highly deformed bands in 171,172 Hf and neighboring Hf isotopes

Author

Zhang, Y.C., Ma, W. C., Afanasjev, A., Hagemann, Gudrun Bertram, Begnaud, J., Carpenter, M. P., Chowdhury, P., Cullen, D. M., Djongolov, M. K., Hartley, D. J., Janssens, R.V. F., Khoo, T. L., Kondev, E. G., Lauritsen, T., Moore, E.F., Ngijoi-Yogo, E., Ødegård, S., Riedinger, L. L., Rigby, S. V., Roux, D. G., Scholes, D. T., Yadav, R. B., Zhang, Jing-Ye, Zhu, S., Zhang, Y.C., Ma, W. C., Afanasjev, A., Hagemann, Gudrun Bertram, Begnaud, J., Carpenter, M. P., Chowdhury, P., Cullen, D. M., Djongolov, M. K., Hartley, D. J., Janssens, R.V. F., Khoo, T. L., Kondev, E. G., Lauritsen, T., Moore, E.F., Ngijoi-Yogo, E., Ødegård, S., Riedinger, L. L., Rigby, S. V., Roux, D. G., Scholes, D. T., Yadav, R. B., Zhang, Jing-Ye, and Zhu, S.

Abstract

Udgivelsesdato: 28 Dec.

Published
2008

19. Gamma-ray spectroscopy of the doubly-odd nuclide 184Re

Author

Wheldon, C., Wilson, A. N., Davidson, P, Pattison, L. K., Rigby, S. V., Scholes, D. T., Sletten, G., Wheldon, C., Wilson, A. N., Davidson, P, Pattison, L. K., Rigby, S. V., Scholes, D. T., and Sletten, G.

Abstract

Nuclear Physics

Published
2005

20. Gamma-ray spectroscopy of the doubly-odd nuclide 184Re

Author

Wheldon, C., Wilson, A. N., Davidson, P, Pattison, L. K., Rigby, S. V., Scholes, D. T., Sletten, G., Wheldon, C., Wilson, A. N., Davidson, P, Pattison, L. K., Rigby, S. V., Scholes, D. T., and Sletten, G.

Abstract

Nuclear Physics

Published
2005

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