Energy Spectrum and Angular Distributions of Neutrons from the Reaction Be 9 ( p , n )B 9 at 8 to 14 MeV of Proton Energies
The Be⁹(p,f)B⁹ reaction has been studied by using a fast neutron spectrometer with a hydrogen gas radiator. The energy spectrum of neutrons from the reaction at 14.1 Mev was obtained and three new excited levels (3.07, 4.14, and 4.94 Mev) in B⁹ were observed. They are consistent with the levels of the mirror nucleus, Be⁹, and the level scheme of intermediate coupling model introduced by Kurath. The angular distributions of the neutrons at 8.1 to 14.1 Mev were obtained. The results do not agree with the theory of Austern, Butler, and McManus. The isotropic parts of the neutron angular distributions become larger as the incident proton energies decrease, probably due to the fact that in the lower energy region compound nucleus formation is more preferable. (auth)
- Research Organization:
- Univ. of Tokyo
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-012222
- OSTI ID:
- 4171570
- Journal Information:
- Journal of the Physical Society of Japan, Journal Name: Journal of the Physical Society of Japan Journal Issue: 3 Vol. 15; ISSN 0031-9015
- Publisher:
- Physical Society of Japan
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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