Published April 1998 | Version v1
Journal article Metadata-only

Half-life of 44Ti

Creators

  • 1. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California94720 (United States)
  • 2. Instituto de Fisica, Universidade de Sao Paulo, Sao Paulo (Brazil)
  • 3. National Institute of Standards and Technology, Gaithersburg, Maryland20899 (United States)

Description

We present the results of two separate measurements of the half-life of 44Ti relative to those of 22Na and 207Bi, respectively. By comparing the numbers of 1157-keV γ rays from 44Ti to those of 1274-keV γ rays from 22Na observed from a mixed source over a period of approximately 2 yr, we determined the half-life of 44Ti to be 61.5±1.0yr. From an approximately 1-yr-long study of another mixed source, where we compared the numbers of 1157-keV γ rays from 44Ti to those of 1064-keV γ rays from 207Bi, we determined the 44Ti half-life to be 62±5yr. From these two results, we have obtained a best value of 62±2yr for the half-life of 44Ti. The astrophysical implications of this result are discussed. copyright 1998 The American Physical Society

Additional details

Publishing Information

Journal Title
Physical Review. C, Nuclear Physics
Journal Volume
57
Journal Issue
4
Journal Page Range
p. 2010-2016
ISSN
0556-2813
CODEN
PRVCAN

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
29047853
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
BISMUTH 207; COSMIC RADIATION; GAMMA RADIATION; HALF-LIFE; METEORITES; NUCLEOSYNTHESIS; SODIUM 22; SUPERNOVAE; TITANIUM 44
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BINARY STARS; BISMUTH ISOTOPES; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; ERUPTIVE VARIABLE STARS; EVEN-EVEN NUCLEI; HEAVY NUCLEI; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LIGHT NUCLEI; NANOSEC LIVING RADIOISOTOPES; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIATIONS; RADIOISOTOPES; SODIUM ISOTOPES; STARS; SYNTHESIS; TITANIUM ISOTOPES; VARIABLE STARS; YEARS LIVING RADIOISOTOPES