Hydride spectroscopy of the diffuse interstellar medium: new clues on the gas fraction in molecular form and cosmic ray ionization rate in relation to HFormula

Menten, K. M.; Falgarone, E.; Levrier, F.; Godard, B.; Le Petit, F.; Persson, C. M.; Lis, D. C.; Gerin, M.; Goicoechea, J. R.; Sonnentrucker, P.; Hennebelle, P.; Black, J. H.; Neufeld, D.; Flagey, N.; De Luca, M.; Goldsmith, P.