arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2212.01799physics.chem-phastro-ph.EPastro-ph.IM
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O($^3P$)+ CO超热碰撞截面散射的量子力学研究

A quantum-mechanical investigation of O($^3P$) + CO scattering cross sections at superthermal collision energies

Sanchit Chhabra, Marko Gacesa, Malathe S. Khalil, Amal Al Ghaferi, Nayla El-Kork

摘要:

与快速和热原子之间的碰撞相关的动力学和能量弛豫是逃逸的基本兴趣,因此也是火星大气的演变。用量子力学方法计算了O($^3P$)原子与CO碰撞的全截面和微分截面。在与行星科学和天体物理学相关的质心系中,计算了碰撞能量从0.4到5 eV的截面。计算了O($^3P$)+ CO碰撞分离到原子基态的全部三个势能面($^3$ A ',$^3$ A”和2 $^3$ A”对称性).计算了含能O($^3P$)原子与CO的三种同位素碰撞截面,比较了碰撞截面的同位素依赖性.我们新计算的O原子及其同位素与CO分子的能量弛豫数据将非常有用,以改善火星高层大气中逃逸和能量转移过程的模拟。

英文摘要:

The kinetics and energetic relaxation associated with collisions between fast and thermal atoms are of fundamental interest for escape and therefore also for the evolution of the Mars atmosphere. The total and differential cross-sections of fast O($^3P$) atom collisions with CO have been calculated from quantum mechanical calculations. The cross-sections are computed at collision energies from 0.4 to 5 eV in the center-of-mass frame relevant to the planetary science and astrophysics. All the three potential energy surfaces ($^3$A', $^3$A" and 2 $^3$A" symmetry) of O($^3P$) + CO collisions separating to the atomic ground state have been included in calculations of cross-sections. The cross-sections are computed for all three isotopes of energetic O($^3P$) atoms collisions with CO. The isotope dependence of the cross-sections are compared. Our newly calculated data on the energy relaxation of O atoms and their isotopes with CO molecules will be very useful to improve the modeling of escape and energy transfer processes in the Mars' upper atmosphere.

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。

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