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Fine structure in the α decay of202Rn

1992; Springer Nature; Volume: 344; Issue: 1 Linguagem: Inglês

10.1007/bf01291016

1431-5831

J. Wauters, P. Dendooven, Mark Huyse, G. Reusen, Peter Lievens, P. Van Duppen,

Atomic and Molecular Physics

The α decay of mass-separated202Rn is studied at the ISOLDE separator. Time sequential α-singles spectra together with α-X-t and α-e-t coincidence events are collected. Fine structure in the α decay is observed and feeding of a low-lying 0 2 + state at 816 keV in198Po is evidenced. This 0+ state can be interpreted as the bandhead of an intruder-state based deformed band, coexisting with the spherical groundstate band. Mixing between normal and intruder states is discussed. A preliminary α-decay study of200Rn did not yet reveal any fine structure.