出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The 29P(p,g )30S reaction rate strongly affects explosive hydrogen burning in classical novae and type I X-ray bursts, and depends on the structure of proton unbound 30S states. The rate in the temperature characteristic of nucleosynthesis in novae and X-ray bursts had been previously predicted to be dominated by two low-lying, unobserved, Jp = 3+ and 2+ resonances above the proton threshold in 30S. Since then, two states have been found at 4699(6) keV and 4814(3) keV, which were tentatively assigned to be the 3+ and 2+ states, respectively. To confirm the existence of these two levels and their energies, the structure of 30S was investigated via an in-beam g -ray spectroscopy experiment using the 28Si(3He, ng )30S reaction at University of Tsukuba Tandem Accelerator Complex in Japan. This work describes the experimental setup and presents the preliminary results.
