Study of the 7Be(p, γ)8B Reaction with the Coulomb Dissociation Method

Naohito Iwasa, Tohru Motobayashi, Yoshiaki Ando, Meiko Kurokawa, Hiroyuki Murakami, Jian Zhi Ruan, Susumu Shimoura, Shoji Shirato, Naohito Inabe, Toshiyuki Kubo, Yasushi Watanabe, Moshe Gai, Ralph France, Kevin Insik Hahn, Zhiping Zhao, Takashi Nakamura, Takashi Teranishi, Yasuyuki Futami, Kazuyoshi Furutaka, Therry DelbarMasayasu Ishihara

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Abstract

The Coulomb-dissociation cross section for the process 8B → 7Be + p in the field of 208Pb was measured at E(8B) = 46.5 A MeV. The 7Be(p,γ)8B cross section relevant to the high-energy 8B solar-neutrino production was extracted at EC.M. = 0.6-1.7 MeV. Two theoretical models on the structure of 8B were used to evaluate possible corrections due to M1 and E2 admixtures to the dominant El cross sections. Their overall effect is shown to be small regardless of the choice of the models. The present result is consistent with the results of the direct measurements of Filippone et al. and Vaughn et al. within errors. This result suggests further studies with the Coulomb-dissociation method to extract astrophysical S17 factor at ∼ 20 keV relevant to the high-energy solar-neutrino flux.

Original languageEnglish
Pages (from-to)1256-1263
Number of pages8
Journaljournal of the physical society of japan
Volume65
Issue number5
DOIs
Publication statusPublished - 1996

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Iwasa, N., Motobayashi, T., Ando, Y., Kurokawa, M., Murakami, H., Ruan, J. Z., Shimoura, S., Shirato, S., Inabe, N., Kubo, T., Watanabe, Y., Gai, M., France, R., Hahn, K. I., Zhao, Z., Nakamura, T., Teranishi, T., Futami, Y., Furutaka, K., ... Ishihara, M. (1996). Study of the 7Be(p, γ)8B Reaction with the Coulomb Dissociation Method. journal of the physical society of japan, 65(5), 1256-1263. https://doi.org/10.1143/JPSJ.65.1256