- C15N initial level labelled from 2 to 34
- C15N final level labelled from 1 to 33
- H2 initial level labelled from 1 to 1
- H2 final level labelled from 1 to 1
- 28 temperatures between 5 K and 150 K
- Units : cm
^{3}s^{-1}

**C ^{15}N **

N/A

N/A

The 2D PES used was adapted from the

The calculation of the 4D PES assumes that both

The

The calculations were performed at regularly spaced distances in the range 4-16 a

- Kalugina Y., Klos J., Lique F.. Collisional excitation of CN(X2\sigma^+) by para- and ortho-H
_{2}: Fine-structure resolved transitions J. Chem. Phys. vol139 : 7 : p074301, 2013, August - Kalugina Y., Lique F., Klos J.. Hyperfine collisional rate coefficients of CN with H
_{2}(j= 0) M.N.R.A.S. vol422 : 1 : p812-818, 2012, May - Ter Horst M. A., Schatz G.~C., Harding L.~B.. Potential energy surface and quasiclassical trajectory studies of the CN+H
_{2}reaction J. Chem. Phys. vol105 : 2 : p558-571, 1996, July - Werner H.-J., Follmeg B., Alexander M.~H., Lemoine D.. Quantum scattering studies of electronically inelastic collisions of CN (X2\Sigma
^{+},A2\Pi) with He J. Chem. Phys. vol91 : 9 : p5425-5439, 1989, November - Boys S.~F., Bernardi F.. The calculation of small molecular interactions by the differences of separate total energies. Some procedures with reduced errors. Mol. Phys. vol19 : p553--566, 1970, October

Close-coupling (CC) calculations were performed by solving the nuclear spin-free coupled set of differential equations. The CC calculations consider explicitely the fine structure.

The

- Corey G.~C., McCourt F.~R.. Inelastic Differential and Integral Cross Section for Linear Molecule-
^{1}S Atom Scattering: The use of Hund's case (b) representation J. Phys. Chem. vol87 : p2723, 1983

not specified

not specified

The methodology used typically allows the determination of rate coefficients with a few percent accuracy, with respect to the PES used.

In the current case, an additional source of error comes from the PES, which is not specifically tailored for C

Additionally, the dynamical calculations neglect the j=2 state of H

Hyperfine de-excitation rate coefficients are provided for the first 34 hyperfine levels of C^{15}N (up to N=8) in collision with para-H_{2}, for temperatures in the range 5-150K.

- Flower D.~R., Lique F.. Excitation of the hyperfine levels of
^{13}CN and C^{15}N in collisions with H_{2}at low temperatures M.N.R.A.S. vol446 : p1750, 2015, January

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