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Rotational excitation of the interstellar NH2 radical by H2

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4975324· OSTI ID:1465745
 [1];  [2];  [3];  [3];  [4];  [4]
  1. CNRS-Univ. du Havre, Le Havre (France); LOMC - UMR 6294, CNRS-Université du Havre, 25 rue Philippe Lebon, BP 1123, 76 063 Le Havre cedex, France
  2. CNRS-Univ. du Havre, Le Havre (France)
  3. Inst. de Planétologie et d’Astrophysique de Grenoble (IPAG), Grenoble (France)
  4. Univ. of New Mexico, Albuquerque, NM (United States)
+ Show Author Affiliations
We present quantum close-coupling calculations for the rotational excitation of the interstellar amidogen radical NH2 due to collisions with H2 molecules. The calculations are based on a recent, high-accuracy full-dimensional NH4 potential energy surface adapted for rigid-rotor scattering calculations. The collisional cross section calculations are performed for all transitions among the first 15 energy levels of both ortho- and para-NH2 and for total energies up to 1500 cm-1. Both para- and ortho-H2 colliding partners are considered. The cross sections for collision with para- and ortho-H2 are found to differ significantly, the magnitude of the ortho-H2 ones being dominant. No strong propensity rules are observed but transitions with Δkc=0 are slightly favored
Research Organization:
Univ. of New Mexico, Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0015997
OSTI ID:
1465745
Alternate ID(s):
OSTI ID: 1361765
Journal Information:
Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 6 Vol. 146; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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