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Identical Bands in 77Sr, 78Sr, and 78Rb - Evidence for a very good Spectator Orbital

Gross, C. J.; Baktash, C.; Cullen, D. M.; Cunningham, R. A.; Garrett, J. D.; Gelletly, W.; Hannachi, F.; Harder, A.; Kabadiyski, M. K. and Lieb, K. P., et al. (1994) In Physical Review C (Nuclear Physics) 49(2). p.580-583
Abstract
The highest spin states in a T(z)=1/2 nucleus have been observed in 77Sr: I(pi)=(49/2+) and (29/2-). In addition, states up to I(pi)=(22+) have been seen in 78Sr. The alpha=1/2, g9/2 band and both signature partners of the negative parity band in 77Sr were found to be identical to the yrast band in 78Sr with relative alignments of 1.22(7)HBAR, 0.52(5)HBAR (alpha=1/2), and 0.42(4)HBAR (alpha=-1/2), respectively. In one of the negative parity bands, the identicality persists through the first proton band crossing. The odd spin decay sequence of the 4- band in 78Rb is identical to the ground band of 78Sr [3.02(3)HBAR] at low spin and to the alpha=1/2, g9/2 band in 77Rb [1.11(3)HBAR] at higher spins. These are the only known examples of... (More)
The highest spin states in a T(z)=1/2 nucleus have been observed in 77Sr: I(pi)=(49/2+) and (29/2-). In addition, states up to I(pi)=(22+) have been seen in 78Sr. The alpha=1/2, g9/2 band and both signature partners of the negative parity band in 77Sr were found to be identical to the yrast band in 78Sr with relative alignments of 1.22(7)HBAR, 0.52(5)HBAR (alpha=1/2), and 0.42(4)HBAR (alpha=-1/2), respectively. In one of the negative parity bands, the identicality persists through the first proton band crossing. The odd spin decay sequence of the 4- band in 78Rb is identical to the ground band of 78Sr [3.02(3)HBAR] at low spin and to the alpha=1/2, g9/2 band in 77Rb [1.11(3)HBAR] at higher spins. These are the only known examples of identical bands in the neutron deficient A=80 region. The analysis indicates that the [301]3/2 Nilsson orbital is a very good spectator orbital. (Less)
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Physical Review C (Nuclear Physics)
volume
49
issue
2
pages
580 - 583
publisher
American Physical Society
external identifiers
  • scopus:0001049450
ISSN
0556-2813
DOI
10.1103/PhysRevC.49.R580
language
English
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no
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800b724d-1707-401d-ae43-3778312d109f (old id 3963641)
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http://link.aps.org/doi/10.1103/PhysRevC.49.R580
date added to LUP
2013-08-13 18:51:06
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2017-01-01 06:53:31
@article{800b724d-1707-401d-ae43-3778312d109f,
  abstract     = {The highest spin states in a T(z)=1/2 nucleus have been observed in 77Sr: I(pi)=(49/2+) and (29/2-). In addition, states up to I(pi)=(22+) have been seen in 78Sr. The alpha=1/2, g9/2 band and both signature partners of the negative parity band in 77Sr were found to be identical to the yrast band in 78Sr with relative alignments of 1.22(7)HBAR, 0.52(5)HBAR (alpha=1/2), and 0.42(4)HBAR (alpha=-1/2), respectively. In one of the negative parity bands, the identicality persists through the first proton band crossing. The odd spin decay sequence of the 4- band in 78Rb is identical to the ground band of 78Sr [3.02(3)HBAR] at low spin and to the alpha=1/2, g9/2 band in 77Rb [1.11(3)HBAR] at higher spins. These are the only known examples of identical bands in the neutron deficient A=80 region. The analysis indicates that the [301]3/2 Nilsson orbital is a very good spectator orbital.},
  author       = {Gross, C. J. and Baktash, C. and Cullen, D. M. and Cunningham, R. A. and Garrett, J. D. and Gelletly, W. and Hannachi, F. and Harder, A. and Kabadiyski, M. K. and Lieb, K. P. and Lister, C. J. and Nazarewicz, W. and Roth, H. A. and Rudolph, Dirk and Sarantites, D. G. and Sheikh, J. A. and Simpson, J. and Skeppstedt, O. and Varley, B. J. and Warner, D. D.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {2},
  pages        = {580--583},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Identical Bands in 77Sr, 78Sr, and 78Rb - Evidence for a very good Spectator Orbital},
  url          = {http://dx.doi.org/10.1103/PhysRevC.49.R580},
  volume       = {49},
  year         = {1994},
}