Hydroxyl radical
Energy levels, transition frequencies and Einstein A coefficients were taken from the JPL catalogue. Transition frequencies are only of spectroscopic accuracy for the file including hyperfine splitting. Collisional rate coefficients were taken from Offer et al. (1994) and cover temperatures in the range from 15 to 300 K for collisions with both para-H2 and ortho-H2.

The more recent calculations by Klos et al (2020) cover the same transitions and collision partners, but a smaller temperature range. Their results are in good agreement with the Offer et al work.

Datafile version: 04 January 2011. Send comments to moldata@strw.leidenuniv.nl