Rotational relaxation in a free expansion of HCl

The rotational relaxation of HCl in a free jet expansion was studied in a pump‐and‐probe experiment using infrared laser excitation and resonant multiphoton ionization detection. Rate constants were determined for various J to J’ energy transfer processes in the vibrationally excited molecule. There is a strong indication that the rotational energy transfer occurs via a near‐resonant dipole–dipole interaction between vibrationally excited and vibrationally cold HCl molecules.

[1]  R. Gordon,et al.  Perturbations in the multiphoton ionization spectrum of the F 1Δ state of HCl , 1991 .

[2]  W. Gentry,et al.  Crossed beam studies of state‐to‐state vibrational energy transfer from the v=5 excited state of I2(X 1Σ+g) prepared by simulated emission pumping , 1991 .

[3]  Yu-lin Huang,et al.  The multiplet state distribution of O(3PJ) produced in the photodissociation of O2 at 157 nm , 1991 .

[4]  D. Chandler,et al.  Direct measurement of rotational energy transfer rate constants for H35Cl (v=1) , 1987 .

[5]  S. Arepalli,et al.  Resonantly enhanced two‐photon spectroscopy of HCl and DCl in the 77 000–87 000 cm−1 region , 1987 .

[6]  J. Menard,et al.  IR double resonance study of rotational energy transfer in pure HCl , 1986 .

[7]  E. E. Nikitin,et al.  Theory of Slow Atomic Collisions , 1984 .

[8]  T. E. Gough,et al.  Rotational relaxation of HF in a free‐jet expansion of dilute HF–He mixtures: Information content on state‐to‐state rate constants , 1983 .

[9]  C. Rettner,et al.  How isolated are molecules in a molecular beam , 1982 .

[10]  J. L. Kinsey,et al.  Level to level differential cross sections for vibrationally–rotationally inelastic collisions of Na2 with Ar , 1981 .

[11]  D. Pritchard,et al.  Rotational energy transfer in Na*2 (A Σ) colliding with Xe, Kr, Ar, Ne, He, H2, CH4, and N2: Experiment and fitting laws , 1981 .

[12]  G. Scoles,et al.  State resolved rotational relaxation of CO in the free jet expansion of He–CO mixtures , 1981 .

[13]  S. Leone,et al.  Temperature dependence of resonant isotopic vibrational energy transfer in H35Cl–H37 Cl , 1979 .

[14]  E. Yeung,et al.  Rovibronic two-photon transitions of symmetric top molecules , 1978 .

[15]  S. Saha,et al.  Resonant and inelastic transitions in collision between HCl molecules , 1978 .

[16]  H. Bennewitz,et al.  Vibrational relaxation in seeded beams , 1978 .

[17]  R. Berry,et al.  Theory of Elementary Atomic and Molecular Processes in Gases , 1975 .

[18]  C. Moore,et al.  Vibration→Rotation Energy Transfer in Hydrogen Chloride , 1971 .

[19]  T. A. Wiggins,et al.  Molecular constants of HCl35 , 1965 .

[20]  Tsutomu Watanabe.  Collisional Excitation Transfer of S-P Type between Identical Atoms , 1965 .