Calculation about the liquid H２ thickness of ICF target

A calculating function relation about liquid H2 thickness of cryogenic target is proposed using the mass conservation in the target. A general model calculating the liquid H2 thickness in ICF target is established. On the basis of them, some factors effecting the liquid H2 thickness such as temperature and initial gas density has been discussed. The analytic method for the model is also fit for the D-2, T2 or the mixture of the D-T in ICF target．