
				Value of input parameter [Model for H + H2 collision rates]:
				Flag to determine <b>model for H-H2 collisions</b><br/>0 - Martin and Mandy prescription<br/>1 - Flower et al. without reactive collisions<br/>2 - Flower et al. with reactive collisions from Schofield<br/>3 - Flower et al. with reactive collisions from Schofield <br/>    plus empiric laws for non-referenced transitionsFortran variable : ichh2