https://doi.org/10.1140/epja/i2006-08-036-3
Nuclear Physics in Astrophysics II
Study of the 26Si(p,γ)27P reaction through Coulomb dissociation of 27P
1
Department of Physics, Rikkyo University, 171-8501, Tokyo, Japan
2
RIKEN (The Institute of Physical and Chemical Research), 351-0198, Saitama, Japan
3
Institute of Nuclear Research (ATOMKI), 4001, Debrecen, Hungary
4
Department of Physics, Tokyo Institute of Technology, 152-8551, Tokyo, Japan
5
Department of Physics, Tohoku University, 980-8578, Miyagi, Japan
6
Department of Physics, University of Tokyo, 113-0033, Tokyo, Japan
7
Center for Nuclear Study (CNS), University of Tokyo, 351-0198, Saitama, Japan
8
Department of Physics, Kyoto University, 606-8502, Kyoto, Japan
* e-mail: toga@ne.rikkyo.ac.jp
Received:
20
June
2005
Accepted:
20
December
2005
Published online:
10
March
2006
The Coulomb dissociation of 27P was studied experimentally using 27P beams at 57MeV/nucleon with a lead target. The E2 gamma decay width of the first excited state in 27P was determined to be (2.8±0.5)×10-5eV. The total (M1 + E2) gamma decay width of the state, which is of astrophysical interest, is estimated by combining the experimental result and a shell model calculation. The reaction rate of 26Si(p,γ)27P is deduced from the estimated total gamma decay width. The astrophysical implication derived from estimated gamma decay width is discussed.
PACS: 25.60.-t Reaction induced by unstable nuclei – / 25.70.De Coulomb excitation – / 26.30.+k Nucleosynthesis in novae, supernovae and other explosive environments – / 27.30.+t 20 ⩽ A ⩽ 38 –
© Società Italiana di Fisica and Springer-Verlag, 2006