Direct Measurement of the 4He(12C, 16O)γ Total Cross Section Near Stellar Energies

A cross section measurement employing a direct 16 O detection method for the reaction energies from E cm = 2.4 to 0.7 MeV is planned at Kyushu University Tandem Laboratory (KUTL). To perform this experiment and to obtain quantitative information about the cross section to within an error of 10%, we have developed several instruments, including a blow-in type windowless gas target, a recoil mass separator and a RF-deflector. The measurements at E cm = 2.4 and 1.5 MeV have been performed with these instruments.For measuring at E cm E cm = 1.2 MeV was performed and the cross section was obtained.