Half-life of {sup 44}Ti

Technical Report · Tue Aug 01 04:00:00 EDT 1995

DOI:https://doi.org/10.2172/166365· OSTI ID:166365

Ahmad, I.; Kutschera, W.; Castagnoli, G. ^[1]; Paul, M. ^[2]

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1. Instituto di Cosmogeofisica, Torino (Italy)
2. Hebrew Univ., Jerusalem (Israel)

The measurement of the {sup 44}Ti half-life, started 3 years ago, is still continuing. The goal of this measurement is to determine the half-life of {sup 44}Ti, which is {approximately}52 y, to a precision of {approximately}5%. An accurate value of this half-life is of interest to cosmologists who need it to determine the production of heavy elements in supernova. Three sets of samples - a pure 200-nCi {sup 44}Ti sample, a pure 300-nCi {sup 60}Co source, and a mixed {sup 44}Ti-{sup 60}Co source of similar strength - were prepared and their spectra are being measured with Ge spectrometers at Argonne, Torino and Jerusalem. Each sample is counted for a period of 2 days, at approximate intervals of 4 months. The room background is also measured for the same length of time. We hope to start data analysis at the end of summer and obtain a value for the {sup 44}Ti half-life.

• Research Organization: Argonne National Lab., IL (United States)
• OSTI ID: 166365
• Report Number(s): ANL--95/14; ON: DE96000985
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HALF-LIFE
PROGRESS REPORT
SUPERNOVAE
TITANIUM 44