The stellar 22Mg( p,γ)23Al reaction studied with the Coulomb dissociation method

The stellar 22Mg(p,γ)23Al reaction is thought as an important reaction in nova, especially, the resonance reaction through the first excited state of 23Al under the high temperature and density conditions. In order that there was no experimental data of the resonance reaction rate, it was determined by the electromagnetic decay width using the Coulomb dissociation method. The resonance reaction rate obtained showed that 22Mg(p,γ)23Al did not contribute to the nuclear combustion process of nova but to higher temperature and density environment. The outline of detector, the relative energy spectrum and the differential cross section of 208Pb(23Al,22Mg p)208Pb reaction, the reaction rate of 22Mg(p,γ)23Al reaction and competitive relation of β-decay between 22Mg and 22Mg(p,γ)23Al are shown. (S.Y.)