LAMDA | RADEX on-line

Energy levels, transition frequencies and Einstein A coefficients were taken from CDMS. The collisional rates are taken from Green & Chapman (1978) and were calculated for temperatures in the range from 10 to 80 K including energy levels up to J=20 for collisions with He. This set of rate coefficients has been scaled by 1.39 to approximate collisions with H2. At present extrapolated rates are not made available.

  • References
    Green, S., Chapman, S. 1978, ApJSS, 37, 169

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