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Report No.

Shapes of $$^{192,190}$$Pb ground states from $$beta$$-decay studies using the total-absorption technique

Est$'e$vez Aguado, M. E.*; Algora, A.*; Agramunt, J.*; Rubio, B.*; Tain, J. L.*; Jord$'a$n, D.*; Fraile, L. M.*; Gelletly, W.*; Frank, A.*; Csatl$'o$s, M.*; Csige, L.*; Dombr$'a$di, Zs.*; Krasznahorkay, A.*; N$'a$cher, E.*; Sarriguren, P.*; Borge, M. J. G.*; Briz, J. A.*; Tengblad, O.*; Molina, F.*; Moreno, O.*; Kowalska, M.*; Fedosseev, V. N.*; Marsh, B. A.*; Fedorov, D. V.*; Molkanov, P. L.*; Andreyev, A. N.; Selivestov, M. D.*; Burkhard, K.*; H$"u$ller, W*

The $$beta$$ decay of $$^{192,190}$$Pb has been studied using the total absorption technique at the ISOLDE (CERN) facility. The $$beta$$-decay strength deduced from the measurements, combined with QRPA theoretical calculations, allow us to infer that the ground states of the $$^{192,190}$$Pb isotopes are spherical. These results represent the first application of the shape determination method using the total absorption technique for heavy nuclei and in a region where there is considerable interest in nuclear shapes and shape effects.



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Category:Physics, Nuclear



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