Abstract
An ‘alpha-decay without tunnelling’ approach shows that alpha-preformation probability in trans-lead even-even alpha-emitters lies in the range of 0·17–0·08, indicating a clear shell-closure effect atN = 126 and exhibits appreciably enhanced values in open-shell nuclei and executes a zig-zag nature with increasing neutron number in an isotopic series. All these findings are in fair qualitative agreement with experimental observations. Experimental results are found to overestimate this parameter for these heavy deformed nuclei.
Similar content being viewed by others
References
Basu M K 1972Phys. Rev. C6 476
Basu M K 1974Sci. Cult. (Calcutta) 40 471
Basu M K and Sen D 1975Indian J. Phys. 49 117;49 Addenda
Basu M K 1976Indian J. Phys. 50 76
Becchetti F D, Chua L T, Jänecke J and Vander Molen A M 1975Phys. Rev. Lett. 34 225
Bonetti R and Milazzo-Colli L 1974Phys. Lett. B49 17
Braga-Marcazzan G M Milazzo-Colli L and Signorini C 1973Lett. Nuovo Cimento 6 357
Chevarier A, Chevarier N, Demeyer A, Hollinger G, Pertosa P and Duc Trans Minh 1975Phys. Rev. C11 886
Colli-Milazzo L and Marcazzan-Braga G M 1972Phys. Lett. 38 155
Colli-Milazzo L and Marcazzan-Braga G M 1973Nucl. Phys. A210 297
Colli-Milazzo L, Marcazzan-Bragga G M, Milazzo M and Signorini C 1974Nucl. Phys. A218 274.
Colli-Milazzo L, Bragga-Marcazzan G M and Milazzo M 1975Nuovo Cimento A30 632
Hanna G C 1959 inExperimental Nuclear Physics, ed. E Segre (John Wiley & Sons Inc.: N.Y.) Vol. 3, p. 54.
Wapstra A H and Gove N B 1971Nucl. Data Tables 9 265
Wilkinson D H 1961Proc. Rutherford Jubilee Int. Conf. (Manchester) ed. J. Birks
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Basu, M.K. Alpha-preformation in even-even alpha emitters: An alpha-decay without tunnelling approach. Pramana - J. Phys. 8, 144–148 (1977). https://doi.org/10.1007/BF02868064
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02868064