| Autor: |
Kawabata Takahiro, Fujikawa Yuki, Furuno Tatsuya, Goto Tatsuya, Hashimoto Toshikazu, Ichikawa Masaya, Itoh Makoto, Iwasa Naohito, Kanada-En'yo Yoshiko, Koshikawa Ami, Kubono Shigeru, Miyawaki Eisuke, Mizuno Masatoshi, Mizutani Keigo, Morimoto Takahiro, Murata Motoki, Nanamura Takuya, Nishimura Shunji, Okamoto Shintaro, Sakaguchi Yuichi, Sakata Itsushi, Sakaue Akane, Sawada Ryo, Shikata Yuki, Takahashi Yu, Takechi Daiki, Takeda Tomoya, Takimoto Chisato, Tsumura Miho, Watanabe Ken, Yoshida Sota |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
EPJ Web of Conferences, Vol 163, p 00028 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2100-014X |
| DOI: |
10.1051/epjconf/201716300028 |
| Popis: |
The cross sections of the 7Be(n, α)4He reaction for p-wave neutrons were experimentally determined at Ec.m. = 0.20−0.81 MeV close to the Big Bang nucleosynthesis (BBN) energy window for the first time on the basis of the detailed balance principle by measuring the time-reverse reaction. The obtained cross sections are much larger than the cross sections for s-wave neutrons inferred from the recent measurement at the n_TOF facility in CERN, but significantly smaller than the theoretical estimation widely used in the BBN calculations. The present results suggest the 7Be(n, α)4 He reaction rate is not large enough to solve the cosmological lithium problem |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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