Direct measurement of the 4He(12C,16 O)γ cross section in inverse kinematics

Kunihiro Fujita, K. Sagara, Takashi Teranishi, M. Iwasaki, D. Kodama, S. Matsuda, T. Mitsuzumi, M. T. Rosary, H. Yamaguchi, S. Liu, J. Y. Moon

Research output: Contribution to journalConference article

Abstract

A cross section measurement employing a direct 16O detection method for the reaction energies from Ecm = 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 and an ionization chamber. A target thickness of 24×3.9 Torrcm was achieved using the developed gas target. The particle identification was successfully performed by using the energy deposit in the ionization chamber. Experiments were performed at Ecm = 2.4 and 1.5 MeV using the developed instruments and the cross sections were obtained. A hybrid detector employing both an ionization chamber and a Si-SSD detector was developed to reduce the carbon backgrounds more efficiently. It was found that the new detector could reduce the background ratio by three orders, and the experiments in Ecm < 1.2 MeV were ready for carrying out.

Original languageEnglish
JournalProceedings of Science
Publication statusPublished - Dec 1 2012
Event12th International Symposium on Nuclei in the Cosmos, NIC 2012 - Cairns, QLD, Australia
Duration: Aug 5 2012Aug 12 2012

All Science Journal Classification (ASJC) codes

  • General

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    Fujita, K., Sagara, K., Teranishi, T., Iwasaki, M., Kodama, D., Matsuda, S., Mitsuzumi, T., Rosary, M. T., Yamaguchi, H., Liu, S., & Moon, J. Y. (2012). Direct measurement of the 4He(12C,16 O)γ cross section in inverse kinematics. Proceedings of Science.