Core polarization in the light of new experimental g factors of fp shell, N=28, isotones

Journal Article · Fri Sep 01 04:00:00 EDT 2000 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.62.031301· OSTI ID:20217499

Speidel, K -H ^[1]; Ernst, R ^[1]; Kenn, O ^[1]; Gerber, J ^[2]; Maier-Komor, P ^[3]; Benczer-Koller, N ^[4]; Kumbartzki, G ^[4]; Zamick, L ^[4]; Fayache, M S ^[4]; Sharon, Y Y ^[4]

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1. Institut fuer Strahlen- und Kernphysik, Universitaet Bonn, Nussallee 14-16, D-53115 Bonn, (Germany)
2. Institut de Recherches Subatomique, F-67037 Strasbourg, (France)
3. Physik-Department, Technische Universitaet Muenchen, James-Franck-Str., D-85748 Garching, (Germany)
4. Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903 (United States)

Precise experimental g factors of the first 2{sup +} states of {sup 50}Ti, {sup 52}Cr, and {sup 54}Fe have been measured. They differ markedly from the g factors of the (7/2){sup -} ground states of the odd-mass neighbors. The experimental results show that the g factors, g(2{sub 1}{sup +}) and g((7/2){sup -}), lie approximately on straight lines as a function of Z albeit with different slopes. Shell model calculations were performed in which up to t nucleons were excited from the f{sub 7/2} shell. The data are reproduced by calculations using the FPD6 interaction with t=1. However, the slope flattens out in the calculations with higher t. The sign of a key matrix element which allows for f{sub 5/2} admixture is positive for the FPD6, zero for the KB3, and negative for the FPY interactions, respectively, indicating that a better understanding of the effective interaction in this region is needed. (c) 2000 The American Physical Society.

• OSTI ID: 20217499
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 62; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHROMIUM 52
EXPERIMENTAL DATA
G VALUE
IRON 54
ISOTONIC NUCLEI
MATRIX ELEMENTS
NUCLEAR FORCES
SHELL MODELS
THEORETICAL DATA
TITANIUM 50