A comparative study of the S-matrix and the WKB methods for the calculation of the half widths of alpha decay of super heavy elements is presented. The extent of the reliability of the WKB methods is demonstrated through simple illustrative examples. Detailed calculations have been carried out using the microscopic alpha-daughter potentials generated in the framework of the double-folding model using densities obtained in the relativistic mean field theories. We consider alpha-nucleus systems appearing in the decay chains of super heavy parent elements having A = 277
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Pa Prema, Dr. Mahadevan S., Shastry, C. Sa, Bhagwat, Abc, and Gambhir, Y. Kde, “Study of alpha decay of super heavy elements using s-matrix and wkb methods”, International Journal of Modern Physics E, vol. 17, pp. 611-629, 2008.