Abstract
A recent paper compared moment method and Lanczos method calculations of the level density of20Ne. The present work extends this comparison to include a new type of Lanczos expansion. This expansion procedure shares the advantage of the traditional Lanczos method of a positive definite level density, but unlike the latter, may be used in an essentially infinite basis. Calculations utilizing dsdf and ppdsd bases have been compared with experimental values for the level density, parity ratio and spin cutoff parameters to determine the appropriateness of the input parameters and the model, while calculations in a dsd basis are compared with exact calculated results to test the accuracy of representation provided by the expansion technique.
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B.S. gratefully acknowledges a Fulbright travel stipend and the hospitality of the staff of the John E. Edwards Accelerator Lab of Ohio University.