Total d+d--> alpha + eta cross sections near threshold.

Total d+d--> alpha + eta cross sections near threshold.
复制标题

总 d d--> 接近阈值的 alpha eta 横截面。

DOI:
10.1103/physrevc.50.r537
复制
发表时间:
1994
期刊:
Physical review. C, Nuclear physics
影响因子:
--
通讯作者:
W. Spang
W. Spang
中科院分区:
--
文献类型:
--
作者:
R. Frascaria;F. Roudot;R. Wurzinger;M.;J. Ernst;L. Goldzahl;F. Hinterberger;R. Jahn;R. Joosten;Oepen Tv;W. Spang

文献摘要

被引文献

相似文献

在高于阈值0.7 MeV到3.7 MeV的四种不同动能下,测量了[ETA]产生的总截面。平方幅度与[vert bar][tal f][vert bar][sup 2]=(24.6[+-]1.2[+-]1.7)nb/sr的恒定值一致,接近阈值(14[lt][tal p][Sub[eta]][lt]40 MeV/[tal c])。假定[pi][sup 0]-[eta]混合反应机制占主导地位,这一结果允许在[eta]-阈值能量下预测同位旋禁能反应[itald]+[itald][r箭头][α]+[pi][sup0]]=(8.3[+-]0.5[+-0.6)pb/sr。
The total cross section for [eta] production in deuteron-deuteron interactions has been measured at four different kinetic energies, from 0.7 MeV to 3.7 MeV above threshold. The squared amplitude is consistent with a constant value of [vert bar][ital f][vert bar][sup 2]=(24.6[plus minus]1.2[plus minus]1.7) nb/sr close to threshold (14[lt][ital p][sub [eta]][lt]40 MeV/[ital c]). Assuming that the [pi][sup 0]-[eta] mixing reaction mechanism is dominant, this result allows a prediction of ([ital d][sigma]/[ital d][Omega])[sub [pi][sup 0]]=(8.3[plus minus]0.5 [plus minus]0.6) pb/sr for the cross section of the isospin-forbidden reaction [ital d]+[ital d][r arrow][alpha]+[pi][sup 0] at the [eta]-threshold energy.