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Title: Rotational and vibrational state distributions of HNC(0 v{Sup 1 ovr sub 2} 0) from the hot H atom reaction : H + (CN){sub 2}{yields}HNC + CN.

The reaction dynamics of the five-atom system, H + (CN){sub 2}, was investigated by probing the minor product channel producing the transient HNC molecule. The complete initial energy disposition, translation, rotation, and vibration was determined for the HNC(0v{sup 1}{sub 2} 0), v{sup 1}{sub 2} = 0{sup 0},1{sup -1}, product. The reaction was studied under bulk conditions and was initiated by energetic H atoms with a mean translational energy of 92 kJ mol{sup -1}. The HNC molecule was monitored by time- and frequency-resolved absorption spectroscopy with sub-Doppler resolution. The initial rotational state distribution of each HNC(0 v{sup 1}{sub 2} 0) vibrational level was measured and found to be well-described by a Boltzmann distribution. Only two vibrational levels were detected so that the initial HNC product vibrational level distribution was determined as well. The absolute reaction cross section for the title reaction was measured to be 2 x 10{sup -18} cm{sup -2} for H atoms with a nominal translational energy of 113 kJ mol.{sup -1}.
Authors:
;
Publication Date:
OSTI Identifier:
942900
Report Number(s):
ANL/CHM/JA-35755
Journal ID: ISSN 1089-5639; JPCAFH; TRN: US200923%%683
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: J. Phys. Chem. A; Journal Volume: 104; Journal Issue: 45 ; Nov. 16, 2000
Research Org:
Argonne National Laboratory (ANL)
Sponsoring Org:
SC
Country of Publication:
United States
Language:
ENGLISH
Subject:
08 HYDROGEN; ABSORPTION SPECTROSCOPY; ATOMS; CROSS SECTIONS; DYNAMICS; HOT ATOM CHEMISTRY; HYDROGEN; LEVELS; MOLECULES; RESOLUTION; ROTATION; ROTATIONAL STATES; TRANSIENTS; VIBRATIONAL STATES