Oxygen chemistry of shocked interstellar clouds. I - Rate constants for thermal and nonthermal internal energy distributions

1987 ◽  
Vol 317 ◽  
pp. 423 ◽  
Author(s):  
A. F. Wagner ◽  
M. M. Graff
Keyword(s):  
Internal Energy ◽  
Rate Constants ◽  
Energy Distributions ◽  
Interstellar Clouds

scholarly journals Effects of Nonthermal Internal Energy on Postshock Oxygen Chemistry

1987 ◽  
Vol 120 ◽  
pp. 295-296
Author(s):  
M. M. Graff ◽  
A. Dalgarno ◽  
A. F. Wagner
Keyword(s):  
Fine Structure ◽  
Internal Energy ◽  
Reaction Rates ◽  
Rate Coefficients ◽  
Shock Model ◽  
Energy Distributions ◽  
Interstellar Clouds ◽  
Thermal Measurements ◽  
Simple Extrapolation

The internal energy distributions of reactants in shocked interstellar clouds are discussed. Rate coefficients appropriate for the oxygen chemistry of shocks differ significantly from those deduced by simple extrapolation of thermal measurements. A one-fluid MHD shock model examines nonthermal effects for a 10 km s−1 shock propagating through clouds of initial densities of 10 and 105 cm−3, using oxygen-hydrogen reaction rates that are specific to the vibrational, rotational, and fine structure temperatures of the reactants.

Internal energy distributions from nitrogen dioxide fluorescence. 1. Cumulative sum method

1993 ◽  
Vol 97 (39) ◽  
pp. 9890-9903 ◽  
Author(s):  
H. S. Johnston ◽  
C. E. Miller ◽  
B. Y. Oh ◽  
K. O. Patten ◽  
W. N. Sisk
Keyword(s):  
Nitrogen Dioxide ◽  
Internal Energy ◽  
Cumulative Sum ◽  
Energy Distributions ◽  
Cumulative Sum Method

An ICR Study of Ion-Molecule Reactions in the C2H2/HCN System

1980 ◽  
Vol 87 ◽  
pp. 299-303 ◽  
Author(s):  
M.J. Mcewan ◽  
V. G. Anicich ◽  
W.T. Huntress
Keyword(s):  
Rate Constants ◽  
Interstellar Clouds ◽  
Ion Molecule Reactions

Rate constants obtained by the ICR technique are reported for reaction (1), C2H2+ + HCN and reaction (2) HCN+ + C2H2 such that k1 = 3.6 × 10−10 and k2 = 6.9 × 10−10 cm3 molecule−1 s−1, respectively. Differences between these results and other measurements of reaction (1) are discussed. The relevance of reaction (1) to the formation of HC3N in interstellar clouds is also briefly assessed.

Translational and internal energy distributions of CO photochemically desorbed from oxidized Ni(111)

1992 ◽  
Vol 96 (6) ◽  
pp. 4808-4811 ◽  
Author(s):  
M. Asscher ◽  
F. M. Zimmermann ◽  
L. L. Springsteen ◽  
P. L. Houston ◽  
W. Ho
Keyword(s):  
Internal Energy ◽  
Energy Distributions
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