Structure of neutron rich nuclei

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · Bulletin of the American Physical Society

OSTI ID:256482

Lee, I Y ^[1]

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1. Lawrence Berkeley National Laboratory, CA (United States)

Neutron rich nuclei are of particular interest since they might reveal new aspects of nuclear structure associated with an excess of neutrons, such as new region of deformation, shell effects and modes of excitation. Deep-Inelastic reactions have been shown to produce neutron-rich nuclei with a high multiplicity of gamma-rays. However, since these reactions produce many final nuclei. It has been very difficult to study them until now, due to the lack of sensitivity of the available gamma-ray detector arrays. We have carried out gamma-spectroscopy studies of neutron rich nuclei using the reaction {sup 48}Ca+{sup 176}Yb. A Si-strip detector was used to detect the projectile-like fragments and the coincident gamma rays were detected in the Gammasphere. States with spin as high as 20 in neutron-rich nuclei such {sup 177,178}Yb and {sup 173}Tm were observed from 2- and 3-fold gamma-ray coincidence data. We will discuss results on the variation of nuclear stricture over a wide range of neutron numbers. For example, the study of pairing strength as a function of spin, and the variation of the interaction strength of the first backbending.

• OSTI ID: 256482
• Report Number(s): CONF-9510116--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 10 Vol. 40; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CALCIUM 48 REACTIONS
GAMMA SPECTROSCOPY
HIGH SPIN STATES
NUCLEAR STRUCTURE
THULIUM 173
YTTERBIUM ISOTOPES