论文标题
与中性锰和钛的低能氢原子碰撞中的激发和电荷转移
Excitation and charge transfer in low-energy hydrogen atom collisions with neutral manganese and titanium
论文作者
论文摘要
需要与锰和钛碰撞引起的非弹性过程的数据，以便在晚期恒星中对相应光谱进行准确建模。在这项工作中，在理论上研究了基于基于中性原子原子原子质系统中离子多价相互作用的原子轨道模型的原子轨道模型的渐近双电线线性组合的方法，在理论上研究了这种工作激发和电荷传递。对两个碰撞系统中的电荷转移（相互中和，离子对产生），激发和脱离驱激过程的广泛计算均针对共价状态之间的所有过渡分离至低于第一个离子限制的能量和主导离子离子状态。确定速率系数的温度为1000至20 000 K的温度为1000K。与对其他原子种类的早期研究一样，发现电荷转移过程会导致比激发过程更大的速率系数。
Data for inelastic processes due to hydrogen atom collisions with manganese and titanium are needed for accurate modeling of the corresponding spectra in late-type stars. In this work excitation and charge transfer in low-energy Mn+H and Ti+H collisions have been studied theoretically using a method based on an asymptotic two-electron linear combination of an atomic orbitals model of ionic-covalent interactions in the neutral atom-hydrogen-atom system, together with the multichannel Landau-Zener model to treat the dynamics. Extensive calculations of charge transfer (mutual neutralization, ion-pair production), excitation and de-excitation processes in the two collisional systems are carried out for all transitions between covalent states dissociating to energies below the first ionic limit and the dominating ionic states. Rate coefficients are determined for temperatures in the range 1000 - 20 000 K in steps of 1000 K. Like for earlier studies of other atomic species, charge transfer processes are found to lead to much larger rate coefficients than excitation processes.
