Details

Autor(en) / Beteiligte

• Adachi, T.
• Fujita, Y.
• von Brentano, P.
• Berg, G.P.A.
• Fransen, C.
• De Frenne, D.
• Fujita, H.
• Fujita, K.
• Hatanaka, K.
• Honma, M.
• Jacobs, E.
• Kamiya, J.
• Kawase, K.
• Mizusaki, T.
• Nakanishi, K.
• Negret, A.
• Otsuka, T.
• Pietralla, N.
• Popescu, L.
• Sakemi, Y.
• Shimbara, Y.
• Shimizu, Y.
• Tameshige, Y.
• Tamii, A.
• Uchida, M.
• Wakasa, T.
• Yosoi, M.
• Zell, K.O.

Titel

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

Ist Teil von

• Nuclear physics. A, 2007-05, Vol.788 (1), p.70-75

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2007

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 T z = + 1 nuclei ( 42Ca, 46Ti, 50Cr and 54Fe) to T z = 0 nuclei ( 42Sc, 46V, 50Mn and 54Co) at an incident energy of 140 MeV/nucleon and at 0°for the precise study of GT transition strengths B(GT). To derive B(GT) values for these pf-shell nuclei, the R 2 value, the ratio between the GT and Fermi unit cross sections, was introduced. The R 2 values were studied for various mass nuclei by using the B(GT) values from β-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.