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Title: Spectroscopy of the odd-odd fp-shell nucleus {sup 52}Sc from secondary fragmentation

Abstract

The odd-odd fp-shell nucleus {sup 52}Sc was investigated using in-beam {gamma}-ray spectroscopy following secondary fragmentation of a {sup 55}V and {sup 57}Cr cocktail beam. Aside from the known {gamma}-ray transition at 674(5) keV, a new decay at E{sub {gamma}}=212(3) keV was observed. It is attributed to the depopulation of a low-lying excited level. This new state is discussed in the framework of shell-model calculations with the GXPF1, GXPF1A, and KB3G effective interactions. These calculations are found to be fairly robust for the low-lying level scheme of {sup 52}Sc irrespective of the choice of the effective interaction. In addition, the frequency of spin values predicted by the shell model is successfully modeled by a spin distribution formulated in a statistical approach with an empirical, energy-independent spin-cutoff parameter.

Authors:
; ;  [1]; ; ;  [2]; ; ; ; ; ;  [1];  [3]; ; ;  [4];  [1];  [3]
  1. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
  2. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  3. (United States)
  4. Department of Physics and Astronomy, Schuster Laboratory, University of Manchester, Manchester M13 9PL (United Kingdom)
Publication Date:
OSTI Identifier:
20771408
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.73.037309; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CHROMIUM 57; DISTRIBUTION; EXCITED STATES; GAMMA RADIATION; GAMMA SPECTROSCOPY; KEV RANGE; NUCLEAR DECAY; NUCLEAR FRAGMENTATION; SCANDIUM 52; SHELL MODELS; SPIN; VANADIUM 55

Citation Formats

Gade, A., Bazin, D., Mueller, W.F., Janssens, R.V.F., Carpenter, M.P., Zhu, S., Brown, B.A., Campbell, C.M., Cook, J.M., Dinca, D.-C., Glasmacher, T., Terry, J.R., Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, Deacon, A.N., Freeman, S.J., Kay, B.P., Mantica, P.F., and Department of Chemistry, Michigan State University, East Lansing, Michigan 48824. Spectroscopy of the odd-odd fp-shell nucleus {sup 52}Sc from secondary fragmentation. United States: N. p., 2006. Web. doi:10.1103/PhysRevC.73.037309.
Gade, A., Bazin, D., Mueller, W.F., Janssens, R.V.F., Carpenter, M.P., Zhu, S., Brown, B.A., Campbell, C.M., Cook, J.M., Dinca, D.-C., Glasmacher, T., Terry, J.R., Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, Deacon, A.N., Freeman, S.J., Kay, B.P., Mantica, P.F., & Department of Chemistry, Michigan State University, East Lansing, Michigan 48824. Spectroscopy of the odd-odd fp-shell nucleus {sup 52}Sc from secondary fragmentation. United States. doi:10.1103/PhysRevC.73.037309.
Gade, A., Bazin, D., Mueller, W.F., Janssens, R.V.F., Carpenter, M.P., Zhu, S., Brown, B.A., Campbell, C.M., Cook, J.M., Dinca, D.-C., Glasmacher, T., Terry, J.R., Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, Deacon, A.N., Freeman, S.J., Kay, B.P., Mantica, P.F., and Department of Chemistry, Michigan State University, East Lansing, Michigan 48824. Wed . "Spectroscopy of the odd-odd fp-shell nucleus {sup 52}Sc from secondary fragmentation". United States. doi:10.1103/PhysRevC.73.037309.
@article{osti_20771408,
title = {Spectroscopy of the odd-odd fp-shell nucleus {sup 52}Sc from secondary fragmentation},
author = {Gade, A. and Bazin, D. and Mueller, W.F. and Janssens, R.V.F. and Carpenter, M.P. and Zhu, S. and Brown, B.A. and Campbell, C.M. and Cook, J.M. and Dinca, D.-C. and Glasmacher, T. and Terry, J.R. and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 and Deacon, A.N. and Freeman, S.J. and Kay, B.P. and Mantica, P.F. and Department of Chemistry, Michigan State University, East Lansing, Michigan 48824},
abstractNote = {The odd-odd fp-shell nucleus {sup 52}Sc was investigated using in-beam {gamma}-ray spectroscopy following secondary fragmentation of a {sup 55}V and {sup 57}Cr cocktail beam. Aside from the known {gamma}-ray transition at 674(5) keV, a new decay at E{sub {gamma}}=212(3) keV was observed. It is attributed to the depopulation of a low-lying excited level. This new state is discussed in the framework of shell-model calculations with the GXPF1, GXPF1A, and KB3G effective interactions. These calculations are found to be fairly robust for the low-lying level scheme of {sup 52}Sc irrespective of the choice of the effective interaction. In addition, the frequency of spin values predicted by the shell model is successfully modeled by a spin distribution formulated in a statistical approach with an empirical, energy-independent spin-cutoff parameter.},
doi = {10.1103/PhysRevC.73.037309},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}