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IV. CONCLUSIONSThe good agreement between our calculations and our data indicates that the model used contains the essential features of the problem. The fact that results from the solution of the linearized Ginzburg-Landau equations can be extended to the full temperature range 4 so readily is due to the fact that we are dealing with local or "dirty" alloys, for which an equation of the Ginsburg-Landau type exists at all temperatures. 10 The discrepancies which exist between the data and the calculated results for the higher K material may be attributed to an inadequacy of the constant thickness of the sheath approximation, and to deviations from the simple two-fluid model temperature dependence. 19 Measurements of the density of states of a thin-film, short-mean-free-path superconductor in a magnetic field are reported. The measurements were made on indium-tin films by a conventional tunneling technique. Temperatures near 0.5 °K were used, in order to minimize thermal smearing. The magnetic field was in the plane of the film, and the film thickness was such that the order parameter was expected to be substantially independent of position. The results are in excellent agreement with theoretical calculations of Maki, except very close to the critical field, where small discrepancies occur. Maki's calculations predict gapless superconductivity close to the critical field, but thermal smearing prevented a direct verification. An attempt to fit the data to a BCS density of states with a field-dependent energy gap was completely unsuccessful except at zero field, where the two theories agree. 1 A. A. Abrikosov and L. P. Gor'kov, Zh. Eksperim. i Teor.