Backbending and rotation alignment

Journal Article · Tue Jan 01 04:00:00 EST 1974 · Nucl. Phys., A, v. A222, no. 2, pp. 235-251

DOI:https://doi.org/10.1016/0375-9474(74)90390-X· OSTI ID:4308744

Stephens, F S; Kleinheinz, P; Sheline, R K; Simon, R S

The Z and N dependence of backbending in the rare-earth region was examined as given by a model based on the rotation aligment of two i/sub 13/2/ neutrons. The important parameters in this model are the rotational moment of inertia, the position of the Fermi surface, and the deformation (both quadrupole and hexadecapole). To fix these (and other) parameters most reliably, a comparison with the observed rotation alignment of a single i/sub 13/2/ neutron in the adjacent odd-A nuclei is proposed. This comparison is made qualitatively throughout the rareearth region, and then quantitatively for the two pairs, /sup 161/Er, /sup 162/Er and /sup 171/Hf, /sup 172/Hf. Based on these comparisons it seems plausible that all the backbendings so far observed in the rareearth region could be due to such rotation alignment. (auth)

• Research Organization: Univ. of California, Berkeley
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-030809
• OSTI ID: 4308744
• Journal Information: Nucl. Phys., A, v. A222, no. 2, pp. 235-251, Journal Name: Nucl. Phys., A, v. A222, no. 2, pp. 235-251; ISSN NUPAB
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*ERBIUM 161-- ROTATIONAL STATES
*ERBIUM 162-- ROTATIONAL STATES
*HAFNIUM 171-- ROTATIONAL STATES
*HAFNIUM 172-- ROTATIONAL STATES
CORIOLIS FORCE
FERMI LEVEL
MOMENT OF INERTIA
MULTIPOLES
N68832* --Physics (Nuclear
Theoretical)--Nuclear Properties & Reactions
150 <= A <= 189--Energy Levels & Transitions
NUCLEAR DEFORMATION
NUCLEAR FORCES
QUADRUPOLE MOMENTS
RARE EARTHS