Eur. Phys. J. A (2006) 27: 233-236
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

Abstract

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.