$\alpha$-decay of neutron-deficient $^{200}$Fr and heavier neighbours

A new measurement of the $^{200}$Fr $\alpha$-decay half-life, with improved accuracy compared to previous measurements, has been carried out at the Isolde-CERN on-line mass separator. A half-life of 49(4) ms has been obtained, which is substantially different from earlier literature values. For the...

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Detalles Bibliográficos
Autores principales: De Witte, H, Andreyev A N, Dean, S, Franchoo, S, Huyse, M, Ivanov, O, Köster, U, Kurcewicz, W, Kurpeta, J, Plochocki, A, Van Duppen, P, Van de Vel, K, Van de Walle, J
Lenguaje:eng
Publicado: 2005
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1140/epja/i2004-10077-9
http://cds.cern.ch/record/912213
Descripción
Sumario:A new measurement of the $^{200}$Fr $\alpha$-decay half-life, with improved accuracy compared to previous measurements, has been carried out at the Isolde-CERN on-line mass separator. A half-life of 49(4) ms has been obtained, which is substantially different from earlier literature values. For the $^{196}$At daughter decay, a half-life of 389(54) ms and an $\alpha$- branching ratio $\alpha$=94(5)% were measured. In addition, the half-lives of $^{201,203,205}$Fr and $^{197,199}$At are reported.

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