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Pair condensate in realistic shell model states. Part 2: M1 states in {sup 54,56}Cr and {sup 56,58,60}Fe

Technical Report:

Abstract

The possible microscopic realization of Interactive Boson Model (IBM) collective M1 modes is investigated for {sup 54,56}Cr and {sup 56,58,60}Fe, using a shell model space of protons in the 1f{sub 7/2} orbit and neutrons in the 2p{sub 3/2}, and 2p{sub 2/2} orbits. Distributions of the pair-analogues of IBM-2 mixed-symmetry states, and of some g-IBM-2 states, over shell model eigenstates are explicitly determined. For J = 1, the mixed-symmetry SD strength is generally lower than that of the G-pair states, and responsible for most of the low-energy M1 strength. Structures incorporating extended sets of levels, including the M1 states, corresponding to the sd-IBM-2 dynamical symmetry representations are manifest in the shell model spectra for {sup 56}Fe and {sup 54}Cr. The correspondence with observed levels is discussed. 24 refs., 3 tabs., 2 figs.
Authors:
Publication Date:
Dec 01, 1991
Product Type:
Technical Report
Report Number:
UM-P-91/71
Reference Number:
SCA: 663110; PA: AIX-23:006110; SN: 91000616129
Resource Relation:
Other Information: DN: Part 1 published in Phys. Rev. C no.41 (1990) p. 2340.; PBD: [1991]
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COLLECTIVE MODEL; PAIR PRODUCTION; INTERACTING BOSON MODEL; M1-TRANSITIONS; CHROMIUM 54; CHROMIUM 56; IRON 56; IRON 58; IRON 60; SYMMETRY GROUPS; THEORETICAL DATA; VIBRATIONAL STATES; 663110; GENERAL AND AVERAGE PROPERTIES OF NUCLEI AND NUCLEAR ENERGY LEVELS
Sponsoring Organizations:
Australian Research Council, Canberra, ACT (Australia)
OSTI ID:
10102596
Research Organizations:
Melbourne Univ., Parkville, VIC (Australia). School of Physics
Country of Origin:
Australia
Language:
English
Other Identifying Numbers:
Other: ON: DE92612084; TRN: AU9112352006110
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
16 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Halse, P. Pair condensate in realistic shell model states. Part 2: M1 states in {sup 54,56}Cr and {sup 56,58,60}Fe. Australia: N. p., 1991. Web.
Halse, P. Pair condensate in realistic shell model states. Part 2: M1 states in {sup 54,56}Cr and {sup 56,58,60}Fe. Australia.
Halse, P. 1991. "Pair condensate in realistic shell model states. Part 2: M1 states in {sup 54,56}Cr and {sup 56,58,60}Fe." Australia.
@misc{etde_10102596,
title = {Pair condensate in realistic shell model states. Part 2: M1 states in {sup 54,56}Cr and {sup 56,58,60}Fe}
author = {Halse, P}
abstractNote = {The possible microscopic realization of Interactive Boson Model (IBM) collective M1 modes is investigated for {sup 54,56}Cr and {sup 56,58,60}Fe, using a shell model space of protons in the 1f{sub 7/2} orbit and neutrons in the 2p{sub 3/2}, and 2p{sub 2/2} orbits. Distributions of the pair-analogues of IBM-2 mixed-symmetry states, and of some g-IBM-2 states, over shell model eigenstates are explicitly determined. For J = 1, the mixed-symmetry SD strength is generally lower than that of the G-pair states, and responsible for most of the low-energy M1 strength. Structures incorporating extended sets of levels, including the M1 states, corresponding to the sd-IBM-2 dynamical symmetry representations are manifest in the shell model spectra for {sup 56}Fe and {sup 54}Cr. The correspondence with observed levels is discussed. 24 refs., 3 tabs., 2 figs.}
place = {Australia}
year = {1991}
month = {Dec}
}