Digitale Medien
Springer
The European physical journal
245 (1971), S. 451-470
ISSN:
1434-601X
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract The beta and gamma radiations of163Tb have been investigated employing scintillation and semiconductor spectrometers and coincidence techniques. The sources were produced by the163Dy(n,p)163Tb reaction. A half-life of 19.5 min has been measured without evidence for an isomeric state in the half-life range of 2 sec to 7 d; especially a 6.5 h activity previously assigned to163Tb could not be confirmed. 76 of the total of 82 gamma-ray transitions, representing 99.6% of the gamma-ray intensity, could be assigned to 23 levels in163Dy. From beta and beta-gamma coincidence measurements aQβ-value of 1.7 ± 0.1 MeV has been determined. Spin and parity of 3/2+ are deduced for the ground state of163Tb with the Nilsson configuration [411↑]. The level at 884 keV is interpreted as aJ π=1/2+ state with a high contribution of the three-quasiparticle configurationp[411↑]-p[523↑]-n[523↓] because of an allowed unhindered beta-ray transition to this level.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01395284
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