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Report No.

Signature of the Z=82 shell closure in $$alpha$$-decay process

Andreyev, A. N.*; Huyse, M.*; Van Duppen, P.*; Qi, C.*; Liotta, R. J.*; Antalic, S.*; Ackermann, D.*; Franchoo, S.*; He${ss}$berger, F. P.*; Hofmann, S.*; Kojouharov, I.*; Kindler, B.*; Kuusiniemi, P.*; Lesher, S. R.*; Lommel, B.*; Mann, R.*; Nishio, Katsuhisa   ; Page, R. D.*; Streicher, B.*; $v{S}$$'a$ro, $v{S}$.*; Sulignano, B.*; Wiseman, D.*; Wyss, R. A.*

$$alpha$$-decay data for more than 20 nuclei of the most neutron-deificient isotopes in the region from lead to thorium was obtained. The combined analysis allowed us for the first time to clearly show that crossing the Z=82 shell to higher proton numbers strongly accelerates the $$alpha$$ decay. The analysis support the conjecture that both the N=126 and Z=82 shell closures stongly influence the $$alpha$$-formation probability.



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Category:Physics, Multidisciplinary



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