Accession Number:

AD0620384

Title:

HALF-LIFE MEASUREMENTS OF SOME NEUTRON INDUCED ISOMERS.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s):

Report Date:

1965-01-01

Pagination or Media Count:

55.0

Abstract:

Half-lives of thermal neutron activated isomers were determined by direct decay measurements with a scintillation counter. Scaler pulses following a single channel analyzer, together with precise timing pulses, were traced concurrently by a fast chart recorder. The gain stability of the detecting circuit was also monitored during the decay period. Decay counts were corrected for counting circuit dead-time and for pulse pile-up, and analyzed by a digital computer. The average half-lives obtained, together with their statistical uncertainties are Hf178m 3.79 0.07 sec., Hf179m 18.18 0.28 sec., Yb177m 6.40 0.02 sec., W183m 5.14 0.02 sec. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE