在不同温度下^(18)O(p,α)^(15)N与^(18)O(p,γ)^(19)F两反应道分支比的计算

Calculation of Two Channels Branch Ratio of ^(18)O(p,α)^(15)N and ^(18)O(p,γ)^(19) F under Different Temperature

作者计算了在不同温度 (非共振情况 )下18O(p ,α) 15N与18O (p ,γ) 19F两个反应道的分支比 .在 (2～ 3)× 10 7K温度范围内 ,其分支比R约为 1.33× 10 2 .这表明 ,在CNO循环中 ,核反应18O(p ,γ) 19F可以忽略 .CNO循环中的分支数也将由原来的 4个变成为 3个 。

The branch ratio of two reaction channelsand 18 O(p,α) 15 N and 18 O(p,γ) 19 F under different temperature (non resonant) is calculated. Its branch ratio is R=1.33×10 2 within (2～3)×10 7K. It is shown that the 18 O(p,γ) 19 F can be ignored in CNO cycle. The branch numbers in CNO cycle will be decreased from 4 to 3. And it will directly influence on the solar neutrino fluxes of 17 F and 18 F.