Blocking effect and odd-even differences in the moments of inertia of rare-earth nuclei

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.50.746· OSTI ID:7161121

Zeng, J Y; Lei, Y A; Jin, T H; Zhao, Z J ^[1]

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1. China Center of Advanced Science and Technology (World Laboratory), Center of Theoretical Physics, P.O. Box 8730, Beijing 100080 (China) Department of Physics, Peking University, Beijing 100871 (China) Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080 (China)

A phenomenological analysis of the experimental odd-even differences in the moments of inertia, [delta][ital J]/[ital J], of well-deformed rare-earth nuclei is reviewed, which reveals that there exist large fluctuations in [delta][ital J]/[ital J] with the blocked levels in odd-[ital A] nuclei. A calculation using the particle-number conserving treatment shows that the odd-even difference in the moments of inertia is a pure quantum mechanical interference effect and the experimental strong fluctuations in [delta][ital J]/[ital J] with the blocked level can be reproduced satisfactorily. The calculated value of [delta][ital J]/[ital J] depends sensitively on the energetic location and Coriolis response of the blocked level and the underlying physics is discussed. Particularly, [delta][ital J]/[ital J] is especially large if the blocked orbital is a high-[ital j] intruder orbital near the Fermi surface. In contrast, if the blocked orbital is of normal parity with low [ital j] and high [Omega] (e.g., proton [404] 7/2, [402]5/2), [delta][ital J]/[ital J] almost vanishes.

• OSTI ID: 7161121
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 50:2; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663120 -- Nuclear Structure Models & Methods-- (1992-)
663570 -- Nuclear Mass Ranges-- A=150-189-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COLLECTIVE EXCITATIONS
COLLECTIVE MODEL
CORIOLIS FORCE
DEFORMED NUCLEI
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUCTUATIONS
HIGH SPIN STATES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
MATHEMATICAL MODELS
MOMENT OF INERTIA
NUCLEAR MODELS
NUCLEI
PAIRING INTERACTIONS
PARITY
PARTICLE PROPERTIES
RARE EARTH NUCLEI
VARIATIONS