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Comparison of S-matrix and WKB methods for half-width calculations

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Title Comparison of S-matrix and WKB methods for half-width calculations
 
Creator MAHADEVAN, S
PREMA, P
SHASTRY, CS
GAMBHIR, YK
 
Subject relativistic mean-field
alpha-decay
superheavy nuclei
resonances
scattering
state
 
Description The calculated Q values and half widths of alpha-decay of superheavy elements using both the S-matrix and the WKB methods are analyzed. The calculations are carried out using the microscopically derived alpha-daughter potentials for the parents appearing in the alpha-decay chain of super heavy element (A=277,Z=112). Both the S-matrix and the WKB methods though yield comparable results for smaller, in fact negative log tau(1/2) values, the former is superior. However, for the case of positive log tau(1/2) it is found that the S-matrix method though exact, runs into some numerical difficulties.
 
Publisher AMERICAN PHYSICAL SOC
 
Date 2011-07-17T12:07:19Z
2011-12-26T12:50:17Z
2011-12-27T05:36:30Z
2011-07-17T12:07:19Z
2011-12-26T12:50:17Z
2011-12-27T05:36:30Z
2006
 
Type Article
 
Identifier PHYSICAL REVIEW C, 74(5), -
0556-2813
http://dx.doi.org/10.1103/PhysRevC.74.057601
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4723
http://hdl.handle.net/10054/4723
 
Language en