Alpha radioactivity in heavy and super heavy elements

✍ Scribed by K.P. Santhosh; Sabina Sahadevan; R.K. Biju

• Book ID: 103866502
• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 994 KB
• Volume: 825
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2009.04.012

✦ Synopsis

The alpha decay half lives and other characteristics of 190 even-even super heavy elements in the range 100 Z 120 has been determined within the Coulomb and Proximity Potential Model (CPPM). The computed Q values and log 10 (T 1/2 ) values plotted against neutron number of parent nuclei were studied and it was found that neutron shell closures in the super heavy region occur at N = 162 and N = 184. The alpha decay half lives for parent nuclei with atomic number Z = 106 onwards were compared with experimental data and are found to be in good agreement with each other. A semi-empirical formula for alpha decay half lives has been formulated by making least squares fit to the available experimental data. The new semi-empirical formula was used for calculating half lives of isotopes of nuclei in the chosen range 100 Z 120. These results when compared with the corresponding experimental half life values and the values calculated using GLDM and Viola-Seaborg systematics showed good agreement.