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首页> 外文期刊>The Journal of Chemical Physics >Inelastic state-to-state scattering of OH (~2PI_(3/2),J=3/2,f) by HCI
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Inelastic state-to-state scattering of OH (~2PI_(3/2),J=3/2,f) by HCI

机译：HCI对OH（〜2PI_（3/2），J = 3/2，f）的非弹性状态间散射

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摘要

Parity resolved state-to-state cross sections for inelastic scattering of OH (X ~2PI) by HCl were measured in a crossed molecular beam experiment at the collision energy of 920 cm~(-1).The OH (X ~2PI) radicals were prepared in a single quantum state,OMEGA=3/2,J=3/2,M_J=3/2,f,by means of electrostatic state selection in a hexapole field.The rotational distribution of the scattered OH radicals by HCl was probed by saturated LIF spectroscopy of the 0-0 band of the A ~2SIGMA~+=X~2PI transition.Relative state-to-state cross sections were measured for rotational excitations up to J=9/2 within the OMEGA=3/2 spin-orbit manifold and up to J=7/2 within the OMEGA=1/2 spin-orbit manifold.A propensity for spin-orbit conserving transitions was found,but no propensity for excitation into a particular LAMBDA-doublet component of the same rotational state was evident.The data are presented and discussed in comparison with results previously obtained for collisions of OH with CO (E_(coll)=450 cm~(-1)) and N_2 (E_(coll)=410 cm~(-1)) and with new data we have measured for the OH+CO system at a comparable collision energy (E_(coll)=985 cm~(-1)).This comparison suggests that the potential energy surface (PES) governing the interaction between OH and HCl is more anisotropic than the PES's governing the intermolecular interaction of OH with CO and N_2.
机译：在920 cm〜（-1）的碰撞能量下，通过交叉分子束实验测量了HCl对OH（X〜2PI）的非弹性散射的奇偶分解状态间断面.OH（X〜2PI）自由基通过六极场中的静电态选择制备了单量子态OMEGA = 3/2，J = 3/2，M_J = 3/2，f.HCl散射的OH自由基的旋转分布为用饱和LIF光谱对A〜2SIGMA〜+ = X〜2PI跃迁的0-0谱带进行探测。在OMEGA = 3 / 2个自旋流形流形，在OMEGA = 1/2自旋流形流形内达到J = 7/2。发现有自旋轨道守恒跃迁的倾向，但没有激发成特定的LAMBDA-doublet分量的倾向。与以前的OH与CO的碰撞结果（E_（coll）= 450 cm〜（-1））a相比，给出并讨论了数据。 N_2（E_（coll）= 410 cm〜（-1））并利用新的数据，我们以相近的碰撞能量（E_（coll）= 985 cm〜（-1））测量了OH + CO系统。比较表明，支配OH和HCl之间相互作用的势能面（PES）比支配OH与CO和N_2分子间相互作用的PES具有更大的各向异性。

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