ISSN:
1434-601X
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract γ-ray spectroscopic techniques have been applied to measure properties of excited states (E *〈2MeV) in210Pb,212Po, and213At after populating these neutron rich (N=128) nuclei via18O induced few-nucleon transfer reactions on208Pb and209Bi targets. In212Po an isomeric state is located atE *=1,477 keV with a halflife oft 1/2=14.7±0.3 ns. This state is interpreted to be the 8+ yrast level which decays to the ground state via the measured $$8^ + \left( {121.1 keV} \right)6^ + \left( {223.3 keV} \right)4^ + \left( {405.1 keV} \right)2^ + \left( {727.8 keV} \right)0^ + $$ γ-cascade.α-decay (E α≈10.2 MeV) of the isomer is also observed. In210Pb the time spectra for members of the 4+ (297.8keV) 2+ (799.4keV)0+ γ-cascade show a delayed component with a halflife oft 1/2=152±13 ns which is attributed to the known 8+ yrast state atE *=1.27 MeV. For213At first results on theγ-decay of excited states are presented.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01425102
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