by Gaffney, L. P., Spagnoletti, P., Abrahams, K., Bowry, M., Cederkäll, J., de Angelis, G., De Witte, H., Garrett, P. E., Goldkuhle, A., Henrich, C., Illana, A., Johnston, K., Joss, D. T., Keatings, J. M., Kelly, N. A., Komorowska, M., Konki, J., Kröll, T., Lozano, M., Nara Singh, B. S., O’Donnell, D., Ojala, J., Page, R. D., Pedersen, L. G., Raison, C., Reiter, P., Rodriguez, J. A., Rosiak, D., Rothe, S., Scheck, M., Seidlitz, M., Shneidman, T. M., Siebeck, B., Sinclair, J., Smith, J. F., Stryjczyk, M., Van Duppen, P., Vinals, S., Virtanen, V., Warr, N., Wrzosek-Lipska, K., Zielińska, M. and Butler, P. A.
Abstract:
There is sparse direct experimental evidence that atomic nuclei can exhibit stable “pear” shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in 222,228Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing 222Ra as pear shaped with stable octupole deformation, while 228Ra behaves like an octupole vibrator.
Reference:
Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive 222Ra and 228Ra Beams (Gaffney, L. P., Spagnoletti, P., Abrahams, K., Bowry, M., Cederkäll, J., de Angelis, G., De Witte, H., Garrett, P. E., Goldkuhle, A., Henrich, C., Illana, A., Johnston, K., Joss, D. T., Keatings, J. M., Kelly, N. A., Komorowska, M., Konki, J., Kröll, T., Lozano, M., Nara Singh, B. S., O’Donnell, D., Ojala, J., Page, R. D., Pedersen, L. G., Raison, C., Reiter, P., Rodriguez, J. A., Rosiak, D., Rothe, S., Scheck, M., Seidlitz, M., Shneidman, T. M., Siebeck, B., Sinclair, J., Smith, J. F., Stryjczyk, M., Van Duppen, P., Vinals, S., Virtanen, V., Warr, N., Wrzosek-Lipska, K., Zielińska, M. and Butler, P. A.), In Physical Review Letters, volume 124, 2020.
Bibtex Entry:
@article{gaffney_evolution_2020, title = {Evolution of {Octupole} {Deformation} in {Radium} {Nuclei} from {Coulomb} {Excitation} of {Radioactive} {222Ra} and {228Ra} {Beams}}, volume = {124}, url = {https://link.aps.org/doi/10.1103/PhysRevLett.124.042503}, doi = {10.1103/PhysRevLett.124.042503}, abstract = {There is sparse direct experimental evidence that atomic nuclei can exhibit stable “pear” shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in 222,228Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing 222Ra as pear shaped with stable octupole deformation, while 228Ra behaves like an octupole vibrator.}, number = {4}, urldate = {2021-06-09}, journal = {Physical Review Letters}, author = {Gaffney, L. P. and Spagnoletti, P. and Abrahams, K. and Bowry, M. and Cederkäll, J. and de Angelis, G. and De Witte, H. and Garrett, P. E. and Goldkuhle, A. and Henrich, C. and Illana, A. and Johnston, K. and Joss, D. T. and Keatings, J. M. and Kelly, N. A. and Komorowska, M. and Konki, J. and Kröll, T. and Lozano, M. and Nara Singh, B. S. and O’Donnell, D. and Ojala, J. and Page, R. D. and Pedersen, L. G. and Raison, C. and Reiter, P. and Rodriguez, J. A. and Rosiak, D. and Rothe, S. and Scheck, M. and Seidlitz, M. and Shneidman, T. M. and Siebeck, B. and Sinclair, J. and Smith, J. F. and Stryjczyk, M. and Van Duppen, P. and Vinals, S. and Virtanen, V. and Warr, N. and Wrzosek-Lipska, K. and Zielińska, M. and Butler, P. A.}, month = jan, year = {2020}, note = {No CMAM}, pages = {042503}, file = {APS Snapshot:E:\Usuarios\Administrator\Zotero\storage\GKK4755J\PhysRevLett.124.html:text/html;Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\M46TMYC4\Gaffney et al. - 2020 - Evolution of Octupole Deformation in Radium Nuclei.pdf:application/pdf}, }