Rotational structures and their evolution with spin in Gd-152

The fusion-evaporation reaction involving a 175 MeV S-36 beam and a Sn-124 target was performed, and the emitted gamma rays were observed with the Gammasphere spectrometer. Significant additions to the level scheme of Gd-152 were made in spite of the relative weakness of the alpha 4n exit channel, being only similar to 2% of the total fusion cross-section. The high-spin behavior of Gd-152 was compared with that of other N=88 nuclei. A striking similarity was observed with Dy-154 and it is therefore suggested that the angular-momentum-induced shape changes that take place in Dy-154 also occur in Gd-152 in the 30-40h spin range. This is supported by Cranked Nilsson-Strutinsky calculations which were used to interpret the high-spin bands. It is found that a better agreement between calculation and experiment is obtained if the Z=64 shell gap increases with a decreasing number of valence particles outside the doubly-closed Gd-146(64)82 nucleus.

Laird, R. W. (författare)
Riley, M. A. (författare)
Simpson, J. (författare)
Kondev, F. G. (författare)
Hartley, D. J. (författare)
Janssens, R. V. F. (författare)
Brown, T. B. (författare)
Carpenter, M. P. (författare)
Fallon, P. (författare)
Fischer, S. M. (författare)
Lauritsen, T. (författare)
Nisius, D. (författare)
Ragnarsson, IngemarLund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)matf-ira (författare)
Matematisk fysikFysiska institutionen (creator_code:org_t)

Av författaren/redakt...: Campbell, D. B.; Laird, R. W.; Riley, M. A.; Simpson, J.; Kondev, F. G.; Hartley, D. J.; visa fler...; Janssens, R. V. ...; Brown, T. B.; Carpenter, M. P.; Fallon, P.; Fischer, S. M.; Lauritsen, T.; Nisius, D.; Ragnarsson, Inge ...; visa färre...

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