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T=0 Pairing Correlations and Band Crossing Phenomena in N=Z Nuclei

de Angelis, G.; Fahlander, Claes LU ; Gadea, A.; Farnea, E.; Gelletly, W.; Aprahamian, A.; Axelsson, A.; Bazzacco, D.; Becker, F. and Bizzeti, P. G., et al. (1998) In Nuclear Physics, Section A 630(1-2). p.426-433
Abstract
The structure of the N=Z nuclei Zn-60, Ga-62, Ge-64 and Kr-72 has been investigated at GASP spectrometer through the S-32 + Ca-40 and Ca-40 + Ca-40 reactions at 140 and 160 MeV, respectively, using reaction channel selection with the ISIS Si-ball. The high spin states of such nuclei have been investigated searching for the four quasi-particle g(9/2) alignment. TRS calculations have been performed for the N=36, 38 and 40 Kr isotopes. In the case of Kr-72 th, four quasi-particle g(9/2) alignment is observed to be significantly delayed in rotational frequency with respect to the heavier Kr isotopes. Such a delay contradicts the predictions of mean field calculations and mag; be interpreted as the first sign of additional correlations in the... (More)
The structure of the N=Z nuclei Zn-60, Ga-62, Ge-64 and Kr-72 has been investigated at GASP spectrometer through the S-32 + Ca-40 and Ca-40 + Ca-40 reactions at 140 and 160 MeV, respectively, using reaction channel selection with the ISIS Si-ball. The high spin states of such nuclei have been investigated searching for the four quasi-particle g(9/2) alignment. TRS calculations have been performed for the N=36, 38 and 40 Kr isotopes. In the case of Kr-72 th, four quasi-particle g(9/2) alignment is observed to be significantly delayed in rotational frequency with respect to the heavier Kr isotopes. Such a delay contradicts the predictions of mean field calculations and mag; be interpreted as the first sign of additional correlations in the T=0 pairing channel. (Less)
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published
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Nuclear Physics, Section A
volume
630
issue
1-2
pages
426 - 433
publisher
Elsevier
external identifiers
  • scopus:0032536307
ISSN
0375-9474
DOI
10.1016/S0375-9474(97)00781-1
language
English
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no
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9e76c9f2-a06e-427c-afdf-bf51bbbd1249 (old id 3963374)
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http://www.sciencedirect.com/science/article/pii/S0375947497007811
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2013-08-13 18:54:27
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2017-01-01 06:43:40
@article{9e76c9f2-a06e-427c-afdf-bf51bbbd1249,
  abstract     = {The structure of the N=Z nuclei Zn-60, Ga-62, Ge-64 and Kr-72 has been investigated at GASP spectrometer through the S-32 + Ca-40 and Ca-40 + Ca-40 reactions at 140 and 160 MeV, respectively, using reaction channel selection with the ISIS Si-ball. The high spin states of such nuclei have been investigated searching for the four quasi-particle g(9/2) alignment. TRS calculations have been performed for the N=36, 38 and 40 Kr isotopes. In the case of Kr-72 th, four quasi-particle g(9/2) alignment is observed to be significantly delayed in rotational frequency with respect to the heavier Kr isotopes. Such a delay contradicts the predictions of mean field calculations and mag; be interpreted as the first sign of additional correlations in the T=0 pairing channel.},
  author       = {de Angelis, G. and Fahlander, Claes and Gadea, A. and Farnea, E. and Gelletly, W. and Aprahamian, A. and Axelsson, A. and Bazzacco, D. and Becker, F. and Bizzeti, P. G. and Bizzeti-Sona, A. and Brandolini, F. and de Acuna, D. and De Poli, M. and Eberth, J. and Foltescu, D. and Lenzi, S. and Lunardi, S. and Martinez, T. and Napoli, D. R. and Pavan, P. and Petrache, C. M. and Alvarez, C. R. and Rudolph, Dirk and Rubio, B. and Skoda, S. and Spolaore, P. and Thomas, G. and Ur, C. and Weiszflog, M. and Wyss, R.},
  issn         = {0375-9474},
  language     = {eng},
  number       = {1-2},
  pages        = {426--433},
  publisher    = {Elsevier},
  series       = {Nuclear Physics, Section A},
  title        = {T=0 Pairing Correlations and Band Crossing Phenomena in N=Z Nuclei},
  url          = {http://dx.doi.org/10.1016/S0375-9474(97)00781-1},
  volume       = {630},
  year         = {1998},
}