Indirect Measurement of Cross Section of ^9Be（p,α）^6Li

The cross section of ^9Be（p,α）^6Li at low energies is important for nuclear astrophysics. But it is difficult for direct measurement because of the Coulomb barrier and electron screening effect. In order to measure the 9Be（p,α）6Li bare nucleus cross section at astrophysical energies, the Trojan Horse Method（THM） can be applied. The main feature of the method is that it allows to extract the energy dependence for the bare astrophysical S（E） factor at very low energies without any extrapolation, by measuring the cross section of an appropriate three body process.