First direct measurement of the $^{11}$C($��$, p)$^{14}$N stellar reaction by an extended thick-target method

説明

The $^{11}$C($��$, p) reaction is an important $��$-induced reaction competing with $��$-limited hydrogen-burning processes in high-temperature explosive stars. We directly measured its reaction cross sections both for the ground-state transition ($��$, $p_{0}$) and the excited-state transitions ($��$, $p_{1}$) and ($��$, $p_{2}$) at relevant stellar energies 1.3 - 4.5 MeV by an extended thick-target method featuring time of flight for the first time. We revised the reaction rate by numerical integration including the ($��$, $p_{1}$) and ($��$, $p_{2}$) contributions and also low-lying resonances of ($��$, $p_{0}$) using both the present and the previous experimental data which were totally neglected in the previous compilation works. The present total reaction rate lies between the previous ($��$, $p_{0}$) rate and the total rate of the Hauser-Feshbach statistical model calculation, which is consistent with the relevant explosive hydrogen-burning scenarios such as the $��p$-process.

8 pages, 8 figures, final version as submitted to Physical Review C for publication after peer-review

関連論文

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ