arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2403.04554astro-ph.IM
收藏

NS+与慢电子碰撞的离解复合

Dissociative recombination of NS+ in collisions with slow electrons

R. Hassaine, F. Gauchet, F. Iacob, J. Zs Mezei, E. Roueff, J. Tennyson, I. F. Schneider

AI总结:

本研究计算了10-1000 K下NS+与低能电子碰撞的离解复合截面及速率系数,发现其速率比NO+慢,10 K时仅为现有数据库估计值的1/2,且多通道量子亏损理论的结果更可靠。

摘要:

本文报道了温度在10至1000 K范围内、低能电子碰撞诱导NS+离子离解复合(DR)的截面与速率系数,该温度范围适用于各类星际云温度条件。文中讨论了这些速率的不确定性,并将其与等电子NO+分子离子的DR速率进行了比较,发现后者的反应速率快得多。本研究得出的离解反应速率系数处于中等水平,在10 K温度下比不同动力学数据库中现有估计值小2倍。我们认为,通过多通道量子亏损理论得到的NS+速率系数可能优于各类动力学数据库中的现有数据。

英文摘要:

Cross sections and rate coefficients for the Dissociative Recombination (DR) of the NS+ ion induced by collisions with low-energy electrons are reported for temperatures between 10 and 1000 K, relevant to a large range of interstellar cloud temperatures. Uncertainties are discussed for these rates. Comparisons are made with DR rates for the isovalent NO+ molecular ion which are found to be much faster. The present findings lead to a moderate dissociative reaction rate coefficient, smaller by a factor of 2 than the current estimates reported in the different kinetic databases for a temperature of 10 K. We consider that our rate coefficients obtained through multichannel quantum defect theory for NS+ are likely to be better than those displayed in the different kinetic databases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑