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Gamow-Teller transitions in pf-shell nuclei studied in (^3He, t) reactions

Adachi, T. and Fujita, Y. and Brentano, P. von and Berg, G. P. A. and Fransen, C. and De Frenne, D. and Fujita, H. and Fujita, K. and Hatanaka, K. and Honma, M. and Jacobs, E. and Kamiya, J. and Kawase, K. and Mizusaki, T. and Nakanishi, K. and Negret, A. and Otsuka, T. and Pietralla, N. and Popescu, L. and Sakemi, Y. and Shimbara, Y. and Shimizu, Y. and Tameshige, Y. and Tamii, A. and Uchida, M. and Wakasa, T. and Yosoi, M. and Zell, K. O. (2007):
Gamow-Teller transitions in pf-shell nuclei studied in (^3He, t) reactions.
In: Nucl. Phys. A, p. 70, 788, (1-4), [Online-Edition: http://www.sciencedirect.com/science/article/B6TVB-4MV74YN-K...],
[Article]

Abstract

The Gamow-Teller transition strengths in pf-shell nuclei are important parameters in a presupernova model. A high resolution (3He, t) reaction was performed from (42Ca, 46Ti, 50Cr and 54Fe) to (42Sc, 46V, 50Mn and 54Co) at an incident energy of and at 0°for the precise study of GT transition strengths B(GT). To derive B(GT) values for these pf-shell nuclei, the R2 value, the ratio between the GT and Fermi unit cross sections, was introduced. The R2 values were studied for various mass nuclei by using the B(GT) values from [beta]-decay studies as standard, and the mass dependence was derived. It was found that GT strengths in these four pf-shell nuclei move to higher excitation energies as the mass number A increases. The obtained GT strength distributions were compared with shell model calculations.

Item Type: Article
Erschienen: 2007
Creators: Adachi, T. and Fujita, Y. and Brentano, P. von and Berg, G. P. A. and Fransen, C. and De Frenne, D. and Fujita, H. and Fujita, K. and Hatanaka, K. and Honma, M. and Jacobs, E. and Kamiya, J. and Kawase, K. and Mizusaki, T. and Nakanishi, K. and Negret, A. and Otsuka, T. and Pietralla, N. and Popescu, L. and Sakemi, Y. and Shimbara, Y. and Shimizu, Y. and Tameshige, Y. and Tamii, A. and Uchida, M. and Wakasa, T. and Yosoi, M. and Zell, K. O.
Title: Gamow-Teller transitions in pf-shell nuclei studied in (^3He, t) reactions
Language: English
Abstract:

The Gamow-Teller transition strengths in pf-shell nuclei are important parameters in a presupernova model. A high resolution (3He, t) reaction was performed from (42Ca, 46Ti, 50Cr and 54Fe) to (42Sc, 46V, 50Mn and 54Co) at an incident energy of and at 0°for the precise study of GT transition strengths B(GT). To derive B(GT) values for these pf-shell nuclei, the R2 value, the ratio between the GT and Fermi unit cross sections, was introduced. The R2 values were studied for various mass nuclei by using the B(GT) values from [beta]-decay studies as standard, and the mass dependence was derived. It was found that GT strengths in these four pf-shell nuclei move to higher excitation energies as the mass number A increases. The obtained GT strength distributions were compared with shell model calculations.

Journal or Publication Title: Nucl. Phys. A
Volume: 788
Number: 1-4
Divisions: 05 Department of Physics
05 Department of Physics > Institute for condensed matter physics
Date Deposited: 20 Jan 2009 12:54
Official URL: http://www.sciencedirect.com/science/article/B6TVB-4MV74YN-K...
Additional Information:

Proceedings of the 2nd International Conference on Collective Motion in Nuclei under Extreme Conditions - COMEX 2

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