Direct measurement of {sup 8}Li+d reactions of astrophysical interest

Journal Article · Wed May 21 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2943592· OSTI ID:21143486

Hashimoto, T; Mitsuoka, S; Nishio, K; Sato, T K; Ichikawa, S; Ikezoe, H ^[1]; Ishiyama, H; Watanabe, Y X; Hirayama, Y; Imai, N; Jeong, S C; Tanaka, M -H; Yoshikawa, N; Nomura, T ^[2]; Miyatake, H ^[2]; Osa, A; Matsuda, M ^[3]; Das, S K; Mizoi, Y; Fukuda, T ^[4]

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1. Advanced Science Research Center, JAEA, Tokai, Ibaraki, 319-1195 (Japan)
2. IPNS, KEK, Tsukuba, Ibaraki, 305-0801 (Japan)
3. Tokai Research and Development Center, JAEA, Tokai, Ibaraki, 319-1195 (Japan)
4. Lab. of Phys., Osaka Electro-Communication University, Neyagawa, Osaka 572-8530 (Japan)

The excitation functions of the {sup 8}Li(d,t){sup 7}Li and the {sup 8}Li(d,p){sup 9}Li reactions were directly measured using {sup 8}Li beams with E{sub cm} = 0.3, 0.4, 0.5, 0.7, 0.8, 1.0, 1.1, and 1.2 MeV irradiating CD{sub 2} targets. These beam energies covered the Gamow peaks for 1-3x10{sup 9} K. Large cross sections were observed at around E{sub cm} = 0.8 MeV for the {sup 8}Li(d,t){sup 7}Li and E{sub cm} = 1.0 MeV for the {sup 8}Li(d,p){sup 9}Li, implying the existence of a resonant state of {sup 10}Be at the excitation energy of around 22.4 MeV. Enhanced with the present work, the astrophysical reaction rates of the {sup 8}Li(d,t){sup 7}Li and the {sup 8}Li(d,p){sup 9}Li reactions are higher by one and two orders of magnitude than the previously evaluated ones, respectively.

• OSTI ID: 21143486
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1016; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASTROPHYSICS
BERYLLIUM 10
DEUTERON REACTIONS
EXCITATION
EXCITATION FUNCTIONS
LITHIUM 7
LITHIUM 8 TARGET
LITHIUM 9
MEV RANGE
NUCLEAR REACTION KINETICS
NUCLEON-NUCLEON INTERACTIONS
NUCLEOSYNTHESIS
PROTONS
TRITONS