Calculations of state-selective differential cross sections for charge transfer in collisions between O3+ and H2

• 来源期刊: 中国物理B(英文版)
• 关键词: charge transfer molecular-orbital coupled-channel method infinite-order sudden ap-proximation state-selective differential cross sections
• 年，卷（期）: 2008,（8）
• 页码范围: 2890-2896
• 页数: 7页
• 语种: 英文

摘要

The non-dissociative charge-transfer processes in collisions between O3+ and H2 are investigated by using the quantum-mechanical molecular-orbital coupled-channel (QMOCC) method. The adiabatic potentials and radial cou-pling matrix elements.utilized in the QMOCC calculations are obtained with the spin-coupled valence-bond approach. Electronic and vibrational state-selective differential cross sections are presented for projectile energies of 0.1, 1.0 and 10.0 eV/u in the H2 orientation angles of 45° and 89°. The electronic and the vibrational state-selective differential cross sections show similar behaviours: they decrease as the scattering angle increases, and beyond a specific angle the oscillating structures appear. Moreover, it is also found that the vibrational state-selective differential cross sections are strongly orientation-dependent, which provides a possibility to determine the orientations of molecule H2 by identifying the vibrational state-selective differential scattering processes.