Accession Number:

AD0258253

Title:

ON NUCLEAR F5/2, P3/2, P1/2 LEVEL SPACINGS AND TRANSITION PROBABILITIES IN THE LEAD REGION

Descriptive Note:

Corporate Author:

NOBEL INST FOR PHYSICS STOCKHOLM (SWEDEN)

Personal Author(s):

Report Date:

1961-05-01

Pagination or Media Count:

1.0

Abstract:

A search for transitions of the type f52 to p12 and p12 to f52 has been made in Pb-205, Pb-203, Pb-201 and Hg-201. It is shown that this transition in Pb-205 has an energy of only 2.3 keV and goes directly to the f52 ground state. In Pb-203 the corresponding transition has an energy of 126 keV and a half-life of 75 or - 3 ns. In Pb-201 and Hg-201 there was no evidence of a half-life longer than about 2 ns. It was essential to work out methods for a systematic search of half-lives in the ns-region in cases where the production of the nuclides to be studied leads to complicated mixtures of isotopes decaying by electron capture. Changes of the f52, p32 and p12 level spacings and transition probabilities with the nucleon number is studied and compared with theory. The agreement between experiments and the predictions of Kisslinger and Sorensen for Pb-205 and Pb-203 is shown to be fairly good. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE