High-spin states following multi-nucleon transfer
A.N. Wilson1,2 -
C.W. Beausang1 -
N. Amzal3 -
D.E. Appelbe3 -
S. Asztalos4 -
P.A. Butler 3 -
R.M. Clark4 -
P. Fallon4 -
A.O. Macchiavelli4
1 Wright Nuclear Structure Laboratory, Yale University,
272 Whitney Avenue, New Haven, CT 06520, USA
2 Department of Physics, University of York, Heslington, York YO10 5DD, UK
3 Oliver Lodge Laboratory, University of Liverpool,
Liverpool, UK
4 Lawrence Berkeley National Laboratory,
Berkeley, CA 94720, USA
anw2@yksc.york.ac.uk
Received: 14 April 2000 / Revised version: 31 August 2000
Communicated by C. Signorini
Abstract
High-spin states in neutron-rich nuclei, populated
following deep-inelastic multi-nucleon transfer, have been
studied using the GAMMASPHERE array at the LBNL,
USA. A 64Ni beam at an energy 
above
the Coulomb barrier
was incident upon a thick 208Pb target, leading to the population of
more than 130 different nuclei. The strongest channels correspond to
nuclei close to the projectile and target, although transfer of up to
50 nucleons has been observed. New high-spin states in neutron-rich 60,62Fe
and
68,70,72Zn 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
region, but no evidence for their presence has been found.
PACS
21.10.Re Collective levels
- 23.20.Lv Gamma transitions and level energies
- 25.70.Gh Compound nucleus
- 27.90.+b
Copyright Società Italiana di Fisica, Springer-Verlag 2000
