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ABSTRACT

Green and Thaddeus 1974

Green, S., and P. Thaddeus, 1974: Rotational excitation of HCN by collisions. Astrophys. J., 191, 653-658.

Rate constants for rotational excitation of HCN by collisions with low-energy He atoms (kinetic temperature below 100°K) have been computed from first principles. The accuracy of individual rates is conservatively estimated to be ±50 percent above 30°K and within a factor of 2 below 20°K. These rates are also believed to be representative of excitation by collisions with H2.

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