Alpha decay studies of new neutron-deficient francium isotopes and their daughters

Autor:	E. Hagberg, S. Mattsson, Björn Jonson, G.T. Ewan, P. Tidemand-Petersson
Rok vydání:	1980
Předmět:	Nuclear physics Physics Nuclear and High Energy Physics Mass excess Isotope chemistry Isotopes of protactinium Alpha-particle spectroscopy chemistry.chemical_element Neutron Alpha decay Radioactive decay Francium
Zdroj:	Zeitschrift f�r Physik A Atoms and Nuclei. 296:223-228
ISSN:	1434-601X 0340-2193
DOI:	10.1007/bf01415836
Popis:	Neutron-deficient francium isotopes were produced by proton-induced spallation reactions and investigated by alpha spectroscopy following on-line mass separation. The new isotopes201, 202Fr were identified and their half-lives measured. An improved value for the half-life of203Fr was obtained. Alpha branching ratios were determined for198m, g, 199At. The derivation of the mass excess of202Fr and the systematics of alpha energies and reduced widths are discussed.
Databáze:	OpenAIRE
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