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H. Yamaguchi,
Y. Wakabayashi,
S. Kubono,
G. Amadio,
H. Fujikawa,
T. Teranishi,
A. Saito,
J.J. He, S. Nishimura,
Y. Togano,
Y.K. Kwon,
M. Niikura,
N. Iwasa,
K. Inafuku,
L.H. Khiem
[show abstract]
[hide abstract]
ABSTRACT: A new measurement of proton resonance scattering on 7Be was performed up to the center-of-mass energy of 6.7 MeV using the low-energy RI beam facility CRIB (CNS Radioactive Ion Beam separator) at the Center for Nuclear Study of the University of Tokyo. The excitation function of elastic scattering above 3.5 MeV was measured successfully for the first time, providing important information about the resonance structure of the 8B nucleus. The resonances are related to the reaction rate of 7Be(p,γ)8B, which is the key reaction in solar 8B neutrino production. Evidence for the presence of two negative parity states is presented. One of them is a 2− state observed as a broad s-wave resonance, the existence of which had been questionable. Its possible effects on the determination of the astrophysical S-factor of 7Be(p,γ)8B at solar energy are discussed. The other state had not been observed in previous measurements, and its spin and parity were determined as 1−.
Physics Letters B 01/2009; 672(3):230-234. · 3.95 Impact Factor
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H Yamaguchi,
Y Wakabayashi,
G. Amadio,
H. Fujikawa,
T Teranishi,
A Saito,
J. J. He, S Nishimura,
Y. Togano,
Y. K. Kwon,
M. Niikura,
N. Iwasa,
K. Inafuku,
L. H. Khiem
[show abstract]
[hide abstract]
ABSTRACT: A new measurement of proton resonance scattering on 7Be was performed up to the center-of-mass energy of 6.7 MeV using the low-energy RI beam facility CRIB (CNS Radioactive Ion Beam separator) at the Center for Nuclear Study of the University of Tokyo. The excitation function of 7Be+p elastic scattering above 3.5 MeV was measured successfully for the first time, providing important information about the resonance structure of the 8B nucleus. The resonances are related to the reaction rate of 7Be(p, gamma)8B, which is the key reaction in solar 8B neutrino production. Evidence for the presence of two negative parity states is presented. One of them is a 2- state observed as a broad s-wave resonance, the existence of which had been questionable. Its possible effects on the determination of the astrophysical S-factor of 7Be(p, gamma)8B at solar energy are discussed. The other state had not been observed in previous measurements, and its spin and parity were determined as 1-.
11/2008;
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H Yamaguchi,
Y Wakabayashi,
G Amadio,
S.~Hayakawa,
H Fujikawa,
S Kubono,
T Teranishi,
J J He,
A Saito, S Nishimura,
Y Togano,
Y K Kwon,
A Kim,
M Niikura,
N Iwasa,
K Inafuku,
L H Khiem,
D.N.~Binh
Nuclear Physics A 01/2008; 805:546-548. · 1.54 Impact Factor
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H Yamaguchi,
Y Wakabayashi,
S.~Hayakawa,
G Amadio,
S Kubono,
H Fujikawa,
A Saito,
J J He,
T Teranishi,
Y K Kwon, S Nishimura,
Y Togano,
N Iwasa,
K Inafuku,
M Niikura,
D.N.~Binh,
L H Khiem
AIP Conference Proceedings 01/2008; 1016:307-312.
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T. Teranishi,
S. Kubono,
H. Yamaguchi,
J.J. He,
A. Saito,
H. Fujikawa,
G. Amadio,
M. Niikura,
S. Shimoura,
Y. Wakabayashi, S. Nishimura,
M. Nishimura,
J.Y. Moon,
C.S. Lee,
A. Odahara,
D. Sohler,
L.H. Khiem,
Z.H. Li,
G. Lian,
W.P. Liu
[show abstract]
[hide abstract]
ABSTRACT: Single-particle properties of low-lying resonance levels in 14O have been studied efficiently by utilizing a technique of proton elastic resonance scattering with a 13N secondary beam and a thick proton target. The excitation functions for the elastic scattering were measured over a wide energy range of ECM=0.4–3.3 MeV and fitted with an R-matrix calculation. A clear assignment of Jπ=2− has been made for the level at Ex=6.767(11) MeV in 14O for the first time. The excitation functions show a signature of a new 0− level at Ex=5.71(2) MeV with Γ=400(100) keV. The excitation energies and widths of the 14O levels are discussed in conjunction with the spectroscopic structure of A=14 nuclei with T=1.
Physics Letters B 06/2007; 650(2-3):129-134. · 3.95 Impact Factor
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H Yamaguchi,
A Saito,
J J He,
Y Wakabayashi,
G Amadio,
H Fujikawa,
S Kubono,
L H Khiem,
Y K Kwon,
M Niikura,
T Teranishi, S Nishimura,
Y Togano,
N Iwasa,
K Inafuku
Proceedings of the International Symposium on Nuclear Astrophysics "Nuclei in the Cosmos - IX"; 01/2007
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H.~Yamaguchi,
A.~Saito,
J.J.~He,
Y.~Wakabayashi,
G.~Amadio,
H.~Fujikawa,
S.~Kubono,
L.H.~Khiem,
Y.K.~Kwon,
M.~Niikura,
T.~Teranishi, S.~Nishimura,
Y.~Togano,
N.~Iwasa,
K.~Inafuku
Proceedings of the International Symposium on Nuclear Astrophysics "Nuclei in the Cosmos - IX"; 01/2007
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A Odahara,
A Takashima,
M Suga,
K Tajiri,
K Kurata,
J Takatsu,
Y Ito,
Y Kenmoku,
K Yamaguchi,
M Kazato, [......],
T Suzuki,
H Watanabe, S Nishimura,
Y Gono,
E Ideguchi,
S Go,
Y Wakabayashi,
T Morikawa,
C Petrache,
D Beaumel
[show abstract]
[hide abstract]
ABSTRACT: Cited References Count:6|WORLD SCIENTIFIC PUBL CO PTE LTD|5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE|Odahara, A.|Takashima, A.|Suga, M.|Tajiri, K.|Kurata, K.|Takatsu, J.|Ito, Y.|Kenmoku, Y.|Yamaguchi, K.|Kazato, M.|Kura, K.|Shimoda, T.|Suzuki, T.|Watanabe, H.|Nishimura, S.|Gono, Y.|Ideguchi, E.|Go, S.|Wakabayashi, Y.|Morikawa, T.|Petrache, C.|Beaumel, D.|ISI Document Delivery No.:627OU
25:1951-1954.
