High-spin states following multi-nucleon transfer

Wilson, AN Beausang, CW Amzal, N Appelbe, DE Asztalos, S Butler, PA Clark, RM Fallon, P Macchiavelli, AO

An. Wilson et al., High-spin states following multi-nucleon transfer, EUR PHY J A, 9(2), 2000, pp. 183-189

20

INGLESE

Article

Physics

EUROPEAN PHYSICAL JOURNAL A

1434-6001 → ACNP

9

2

2000

183 - 189

ISI

1434-6001(200010)9:2<183:HSFMT>2.0.ZU;2-J

High-spin states in neutron-rich nuclei, populated following deep-inelastic multi-nucleon transfer, have been studied using the GAMMASPHERE array at t he LBNL, USA. A Ni-64 beam at an energy similar to 15% above the Coulomb ba rrier was incident upon a thick Pb-208 target, leading to the population of more than 130 different nuclei. The strongest channels correspond to nucle i close to the projectile and target, although transfer of up to 50 nucleon s has been observed. New high-spin states in neutron-rich Fe-60,Fe-62 and Z n-68,Zn-70,Zn-72 nuclei have been observed. Some limitations of this method of high-spin spectroscopy are discussed, including the apparent difficulty of populating odd-odd and odd-even isotopes via this type of reaction. The data have been searched for superdeformed (SD) states in the A = 190-200 r egion, but no evidence for their presence has been found.