An investigation of the Jπ=1+; T=1 states in 40Ca with the (p,γ) reaction

Abstract

In order to explore the Jπ=1+; T=1 states in 40Ca between 11.0 and 12.0MeV, which have been predicted recently, the measurements of the 39K(p,γ)40Ca reaction have been taken. Nine-resonances appeared in the region Ep=2.7-3.8MeV, and six of them corresponding to Ep=2749, 3085, 3135, 3202, 3417 and 3708ke were observed for the first time with the (p,γ) reaction. The spin, parity and isospin of the 11.083MeV state in 40Ca are determined to be Jπ=1+; T=1. The M1 transition strength B(M1)uparrow- of this state from the ground state is 0.24μ02. The result is qualitatively in agreement with the the oretical prediction.