
				Value of input parameter [Model for atoms sticking on dust]:
				Flag to determine <b>model for H sticking</b> on grains<br/>1 - Sticking factor corresponds to gamma  in chemistry file for H + grain -> H<br/>2 - Prescription by Sternberg et Dalgarno<br/>3 - Prescription by Aderson et Vanier<br/>4 - Our prescription: <br/>    s = SQRT(10/Tgas) for T > 10 K<br/>    s = 1             for T < 10 KFortran variable : istic