Neutrino-induced reactions on $^{56}\mathrm{Fe}$ and $^{56}\mathrm{Ni}$, and production of $^{55}\mathrm{Mn}$ in population III stars

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Neutrino-induced reactions on ${}^{56}{Fe}$ and ${}^{56}{Ni}$ , and production of ${}^{55}{Mn}$ in population III stars

Toshio Suzuki, Michio Honma, Koji Higashiyama, Takashi Yoshida, Toshitaka Kajino, Takaharu Otsuka, Hideyuki Umeda, and Ken'ichi Nomoto

Phys. Rev. C 79, 061603(R) – Published 16 June 2009

Abstract

Neutrino-induced reactions on ${}^{56}{Fe}$ and ${}^{56}{Ni}$ are investigated based on a new shell-model Hamiltonian for $pf$ shell. The calculated charged current reaction cross section on ${}^{56}{Fe}$ induced by decay-at-rest (DAR) neutrinos is shown to be consistent with the observation. The Gamow-Teller strength in ${}^{56}{Ni}$ is found to be more spread compared to previous calculations and result in a considerably large branching ratio for the proton knock-out channel. As a consequence of this, the production yields of heavy elements such as ${}^{55}{Mn}$ in population III stars are shown to be enhanced for the new Hamiltonian.

Received 25 May 2009

DOI:https://doi.org/10.1103/PhysRevC.79.061603

Authors & Affiliations

Toshio Suzuki^1,2, Michio Honma³, Koji Higashiyama⁴, Takashi Yoshida⁵, Toshitaka Kajino^5,6, Takaharu Otsuka^7,8,9, Hideyuki Umeda⁵, and Ken'ichi Nomoto^5,10

¹Department of Physics, College of Humanities and Sciences, Nihon University Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550, Japan
²Center for Nuclear Study, University of Tokyo, Hirosawa, Wako-shi, Saitama 351-0198, Japan
³Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima, Japan
⁴Department of Physics, Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan
⁵Department of Astronomy, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
⁶National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan
⁷Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
⁸Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
⁹RIKEN, Hirosawa, Wako-shi, Saitama 351-0198, Japan
¹⁰Institute for the Physics and Mathematics of the Universe, University of Tokyo, Chiba 277-8582, Japan

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Vol. 79, Iss. 6 — June 2009

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Physical Review C

covering nuclear physics

Neutrino-induced reactions on ${}^{56}{Fe}$ and ${}^{56}{Ni}$ , and production of ${}^{55}{Mn}$ in population III stars

Toshio Suzuki, Michio Honma, Koji Higashiyama, Takashi Yoshida, Toshitaka Kajino, Takaharu Otsuka, Hideyuki Umeda, and Ken'ichi Nomoto

Phys. Rev. C 79, 061603(R) – Published 16 June 2009

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Physical Review C

covering nuclear physics

Neutrino-induced reactions on Fe56 and Ni56, and production of Mn55 in population III stars

Toshio Suzuki, Michio Honma, Koji Higashiyama, Takashi Yoshida, Toshitaka Kajino, Takaharu Otsuka, Hideyuki Umeda, and Ken'ichi Nomoto

Phys. Rev. C 79, 061603(R) – Published 16 June 2009

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Neutrino-induced reactions on ${}^{56}{Fe}$ and ${}^{56}{Ni}$ , and production of ${}^{55}{Mn}$ in population III stars