New measurement of the 11B(p,α0)8Be bare-nucleus S(E) factor via the Trojan horse method

被引：65

作者：

Lamia, L. ^{[1
,2
]}

Spitaleri, C. ^{[1
,2
]}

Burjan, V. ^{[3
]}

Carlin, N. ^{[4
]}

Cherubini, S. ^{[1
,2
]}

Crucilla, V. ^{[1
,2
]}

Gameiro Munhoz, M. ^{[4
]}

Gimenez Del Santo, M. ^{[4
]}

Gulino, M. ^{[1
,2
]}

Hons, Z. ^{[3
]}

Kiss, G. G. ^{[5
]}

Kroha, V. ^{[3
]}

Kubono, S. ^{[6
]}

La Cognata, M. ^{[1
,2
]}

Li, C. ^{[7
,8
]}

Mrazek, J. ^{[3
]}

Mukhamedzhanov, A. ^{[9
]}

Pizzone, R. G. ^{[1
,2
]}

Puglia, S. M. R. ^{[1
,2
]}

Wen, Q. ^{[7
]}

Rapisarda, G. G. ^{[1
,2
]}

Rolfs, C. ^{[10
]}

Romano, S. ^{[1
,2
]}

Sergi, M. L. ^{[1
,2
]}

Somorjai, E. ^{[5
]}

Souza, F. A. ^{[4
,11
]}

Szanto de Toledo, A. ^{[4
]}

Tabacaru, G. ^{[8
]}

Tumino, A. ^{[1
,2
]}

Wakabayashi, Y. ^{[6
]}

Yamaguchi, H. ^{[6
]}

Zhou, S-H ^{[7
]}

机构：

[1] Ist Nazl Fis Nucl, Lab Nazl Sud, I-95129 Catania, Italy

[2] Univ Catania, Dipartimento Fis & Astron, I-95124 Catania, Italy

[3] Inst Nucl Phys, Prague, Czech Republic

[4] Univ Sao Paulo, Dept Fis Nucl, Sao Paulo, Brazil

[5] Atomki, Debrecen, Hungary

[6] Univ Tokyo, CNS, Tokyo 1138654, Japan

[7] China Inst Energy, Beijing, Peoples R China

[8] Beijing Radiat Ctr, Beijing 100875, Peoples R China

[9] Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA

[10] Ruhr Univ, Bochum, Germany

[11] IPEN CNEN SP, Inst Pesquisas Energeticas & Nucl, Sao Paulo, Brazil

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2012年 / 39卷 / 01期

基金：

美国国家科学基金会;

关键词：

IMPULSE-APPROXIMATION CALCULATIONS; ENERGY CROSS-SECTIONS; BORON DEPLETION; F-DWARF; BERYLLIUM; LI-6; ASTROPHYSICS; RELEVANT; ALPHA; STARS;

D O I：

10.1088/0954-3899/39/1/015106

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A new measurement of the B-11(p,alpha(0))Be-8 has been performed applying the Trojan horse method (THM) to the H-2(B-11,alpha Be-8(0))n quasi-free reaction induced at a laboratory energy of 27 MeV. The astrophysical S(E) factor has been extracted from similar to 600 keV down to zero energy by means of an improved data analysis technique and it has been compared with direct data available in the literature. The range investigated here overlaps with the energy region of the light element LiBeB stellar burning and with that of future aneutronic fusion power plants using the B-11+p fuel cycle. The new investigation described here confirms the preliminary results obtained in the recent TH works. The origin of the discrepancy between the direct estimate of the B-11(p,alpha(0))Be-8 S(E)-factor at zero energy and that from a previous THM investigation is quantitatively corroborated. The results obtained here support, within the experimental uncertainties, the low-energy S(E)-factor extrapolation and the value of the electron screening potential deduced from direct measurements.

引用

页数：23

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