Hammache F, Bogaert G, Aguer P, Angulo C, Barhoumi S, Brillard L, Chemin J F, Claverie G, Coc A, Hussonnois M, Jacotin M, Kiener J, Lefebvre A, Le Naour C, Ouichaoui S, Scheurer J N, Tatischeff V, Thibaud J P, Virassamynaïken E
CSNSM, IN2P3-CNRS, F-91405 Orsay et Université de Paris-Sud, France.
Phys Rev Lett. 2001 Apr 30;86(18):3985-8. doi: 10.1103/PhysRevLett.86.3985.
We have measured the cross section of the 7Be(p,gamma)8B reaction for E(c.m.) = 185.8, 134.7, and 111.7 keV using a radioactive 7Be target (132 mCi). Single and coincidence spectra of beta+ and alpha particles from 8B and 8Be* decay, respectively, were measured using a large acceptance spectrometer. The zero energy S factor inferred from these data is 18.5+/-2.4 eV b and a weighted mean value of 18.8+/-1.7 eV b (theoretical uncertainty included) is deduced when combining this value with our previous results at higher energies.
我们使用放射性(^{7}Be)靶（(132 mCi)）测量了质心能量(E(c.m.) = 185.8)、(134.7)和(111.7 keV)时(^{7}Be(p,\gamma)^{8}B)反应的截面。分别使用大接收度谱仪测量了来自(^{8}B)和(^{8}Be^{*})衰变的(\beta^{+})和(\alpha)粒子的单能谱和符合谱。从这些数据推断出的零能量(S)因子为(18.5 \pm 2.4 eV b)，当将该值与我们之前在更高能量下的结果相结合时，推导出加权平均值为(18.8 \pm 1.7 eV b)（包括理论不确定性）。
