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| Title: | THE Z=82 SHELL EFFECT NEAR THE PROTON DRIP-LINE | |
| DOI No: | 10.1142/9789812701879_0010 | |
| Source: | CLUSTERS AND NANO-ASSEMBLIES (pp 73-79) | |
| Author(s): | C. SAMANTA
Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Calcutta 700064, India Physics Department, Virginia Commonwealth University, Richmond, VA 23284-2000, USA S. ADHIKARI Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Calcutta 700064, India Physics Department, Virginia Commonwealth University, Richmond, VA 23284-2000, USA |
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| Abstract: | Variation of the shell effect near the Pb nucleus is studied through a comparison between the experimental and theoretical binding energies and one-proton separation energies. The theoretical binding energies are computed using a recently developed mass formula (called, BWM) which reproduces the general trend of the binding energy versus neutron number curves for all the nuclei from Li to Bi. As BWM has no shell effect incorporated, it shows marked deviation near a magic number. When the shell effect diminishes, the difference between the BWM predictions and experimental mass diminishes. The shell effect in isotopes of Pb (Z=82) peaks at neutron number N=126 and, approaches zero near N=106 which suggests that the magic nucleus Lead might lose its magicity when its neutron number content reduces to 106. The shell effect again increases gradually for N<106, indicating considerable shell effect in Pb near the proton drip-line. | |
| Full Text: | View full text in PDF format (254KB) | |
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