Rotational cross sections and rate coefficients fore-CO ande-HCN collisions under interstellar conditions

作者: Samir Saha , Swati Ray , B. Bhattacharyya , A. K. Barua

DOI: 10.1103/PHYSREVA.23.2926

关键词: Interstellar cloudAtomic physicsSchrödinger equationExcited stateAtmospheric temperature rangeRotational temperatureElectron ionizationPhysicsDifferential equationPerturbation (astronomy)

摘要: Rotational cross sections and rate coefficients for $e$-CO $e$-HCN collisions have been calculated in the energy range relevant to dark interstellar clouds by using close-coupling method. Gordon's technique has used solving coupled Schr\"odinger equations. Initial rotational levels $j=0, 1, \mathrm{and} 2$ of CO HCN considered. The 0.0006 0.1 eV temperature 5-100 K. thus obtained compared with Born unitarized time-dependent perturbation calculations.

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