In May and November 2001, two experiments for measuring nuclear reaction cross-sections of A <20 nuclei with a high accuracy were performed successfully at RIBLL by RIKEN group in collaboration with two groups from...In May and November 2001, two experiments for measuring nuclear reaction cross-sections of A <20 nuclei with a high accuracy were performed successfully at RIBLL by RIKEN group in collaboration with two groups from IMP in Lanzhou and INP in Shanghai. The primary beams 60.AMeV 13C and 65AMeV 18O were delivered by HIRFL facility re-展开更多
In 2014, the National Natural Science Foundation of China （NSFC） approved the Jinping Underground Nuclear Astrophysics laboratory （JUNA） project, which aims at direct cross-section measurements of four key stellar...In 2014, the National Natural Science Foundation of China （NSFC） approved the Jinping Underground Nuclear Astrophysics laboratory （JUNA） project, which aims at direct cross-section measurements of four key stellar nuclear reactions right down to the Gamow windows. In order to solve the observed fluorine overabundances in Asymptotic Giant Branch （AGB） stars, measuring the key 19F（p,a）16O reaction at effective burning energies （i.e., at Gamow window） is established as one of the scientific research sub-projects. The present paper describes this sub-project in details, including motivation, status, experimental setup, yield and background estimation, aboveground test, as well as other relevant reactions.展开更多
文摘In May and November 2001, two experiments for measuring nuclear reaction cross-sections of A <20 nuclei with a high accuracy were performed successfully at RIBLL by RIKEN group in collaboration with two groups from IMP in Lanzhou and INP in Shanghai. The primary beams 60.AMeV 13C and 65AMeV 18O were delivered by HIRFL facility re-
基金supported by the National Natural Science Foundation of China(Grant Nos.114905621149056011135005 and 11321064)
文摘In 2014, the National Natural Science Foundation of China （NSFC） approved the Jinping Underground Nuclear Astrophysics laboratory （JUNA） project, which aims at direct cross-section measurements of four key stellar nuclear reactions right down to the Gamow windows. In order to solve the observed fluorine overabundances in Asymptotic Giant Branch （AGB） stars, measuring the key 19F（p,a）16O reaction at effective burning energies （i.e., at Gamow window） is established as one of the scientific research sub-projects. The present paper describes this sub-project in details, including motivation, status, experimental setup, yield and background estimation, aboveground test, as well as other relevant reactions.
