High-spin studies of N ~ Z nuclei in the mass 70 region
(2003) Conference on Frontiers of Nuclear Structure p.261-268- Abstract
- High-spin states have been studied in 72,73Kr using 40Ca+40Ca and 36Ar+40Ca reactions at 160, 164 and 145 MeV respectively. The properties and configurations of the bands observed are interpreted with the aid of unpaired cranked Nilsson-Strutinsky/ cranked relativistic mean-field calculations and paired total routhian surface and cranked relativistic Hartree-Bogoliubov calculations. In 73Kr the three previously known structures have been extended to a spin of ~30[h-bar] and a fourth structure, which is believed to be the signature partner to the g9/2 band, has been identified. The negative parity bands show evidence for an unusual type of band crossing. It is currently unclear whether this is a consequence of T=0 n-p pairing. At the... (More)
- High-spin states have been studied in 72,73Kr using 40Ca+40Ca and 36Ar+40Ca reactions at 160, 164 and 145 MeV respectively. The properties and configurations of the bands observed are interpreted with the aid of unpaired cranked Nilsson-Strutinsky/ cranked relativistic mean-field calculations and paired total routhian surface and cranked relativistic Hartree-Bogoliubov calculations. In 73Kr the three previously known structures have been extended to a spin of ~30[h-bar] and a fourth structure, which is believed to be the signature partner to the g9/2 band, has been identified. The negative parity bands show evidence for an unusual type of band crossing. It is currently unclear whether this is a consequence of T=0 n-p pairing. At the highest spins the unpaired calculations can reproduce the observed data, suggesting that there is little evidence for pairing correlations in this spin regime. In 72Kr a new band has been identified that has the properties expected from the missing doubly aligned S-band configuration. The properties of this band can be reproduced by the unpaired CNS/ CRMF calculations, again suggesting that the structure has little pairing. However, paired calculations appear to be necessary to reproduce the properties of the previously known structure in this nucleus. The 72Kr results are also compared with projected shell model calculations. ©2003 American Institute of Physics (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/713889
- author
- Kelsall, N.S. ; Svensson, C.E. ; Afanasjev, A.V. ; Frauendorf, S. ; Ragnarsson, Ingemar LU ; Wyss, R. and al., et
- organization
- publishing date
- 2003
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- AIP Conference Proceedings
- editor
- Fallon, P. and Clark, R.
- issue
- 656
- pages
- 8 pages
- publisher
- American Institute of Physics (AIP)
- conference name
- Conference on Frontiers of Nuclear Structure
- conference location
- Berkeley, CA, United States
- conference dates
- 2002-07-29 - 2002-08-02
- external identifiers
-
- other:CODEN: APCPCS
- ISSN
- 0094-243X
- 1551-7616
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
- id
- 4e328f35-edc4-4e47-89b0-a5cf00c6fcbf (old id 713889)
- date added to LUP
- 2016-04-01 12:22:22
- date last changed
- 2020-06-09 15:25:35
@inproceedings{4e328f35-edc4-4e47-89b0-a5cf00c6fcbf, abstract = {{High-spin states have been studied in 72,73Kr using 40Ca+40Ca and 36Ar+40Ca reactions at 160, 164 and 145 MeV respectively. The properties and configurations of the bands observed are interpreted with the aid of unpaired cranked Nilsson-Strutinsky/ cranked relativistic mean-field calculations and paired total routhian surface and cranked relativistic Hartree-Bogoliubov calculations. In 73Kr the three previously known structures have been extended to a spin of ~30[h-bar] and a fourth structure, which is believed to be the signature partner to the g9/2 band, has been identified. The negative parity bands show evidence for an unusual type of band crossing. It is currently unclear whether this is a consequence of T=0 n-p pairing. At the highest spins the unpaired calculations can reproduce the observed data, suggesting that there is little evidence for pairing correlations in this spin regime. In 72Kr a new band has been identified that has the properties expected from the missing doubly aligned S-band configuration. The properties of this band can be reproduced by the unpaired CNS/ CRMF calculations, again suggesting that the structure has little pairing. However, paired calculations appear to be necessary to reproduce the properties of the previously known structure in this nucleus. The 72Kr results are also compared with projected shell model calculations. ©2003 American Institute of Physics}}, author = {{Kelsall, N.S. and Svensson, C.E. and Afanasjev, A.V. and Frauendorf, S. and Ragnarsson, Ingemar and Wyss, R. and al., et}}, booktitle = {{AIP Conference Proceedings}}, editor = {{Fallon, P. and Clark, R.}}, issn = {{0094-243X}}, language = {{eng}}, number = {{656}}, pages = {{261--268}}, publisher = {{American Institute of Physics (AIP)}}, title = {{High-spin studies of N ~ Z nuclei in the mass 70 region}}, year = {{2003}}, }