Half-life of /sup 44/Ti
The half-life of /sup 44/Ti has been measured to be T/sub 1/2/ = 54.2 +- 2.1 yr, somewhat higher than previously published values of 46.4 +- 1.7 and 48.2 +- 0.9 yr. The present value was obtained from the specific activity and the radioisotope concentration of several TiO/sub 2/ samples, each spiked with a /sup 44/Ti activity of about 1.2 ..mu..Ci. The specific activity was measured via the 1157 keV ..gamma.. line from the decay of the /sup 44/Sc daughter. /sup 44/Ti/Ti concentrations were measured with the Argonne FN tandem accelerator in conjunction with an Enge split-pole magnetic spectrograph using the technique of accelerator mass spectrometry. An overall sensitivity of 10/sup -10/ was achieved which proves accelerator mass spectroscopy to be a powerful tool for radioisotope detection also in a region of rather heavy ion masses. A detailed description of the subtleties of accelerator mass spectroscopy when applied to measure absolute radioisotope concentrations in this heavy mass region is presented.
- Research Organization:
- Argonne National Laboratory, Argonne, Illinois 60439
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 5539350
- Journal Information:
- Phys. Rev. C; (United States), Vol. 28:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
TITANIUM 44
BETA-PLUS DECAY
EXPERIMENTAL DATA
GAMMA SPECTRA
HALF-LIFE
MASS SPECTROMETERS
RADIOISOTOPES
SCANDIUM 44
TANDEM ELECTROSTATIC ACCELERATORS
ACCELERATORS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
DATA
DAYS LIVING RADIOISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ELECTROSTATIC ACCELERATORS
EVEN-EVEN NUCLEI
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEASURING INSTRUMENTS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
SCANDIUM ISOTOPES
SPECTRA
SPECTROMETERS
TITANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
651522* - Nuclear Properties & Reactions
A=39-58
Experimental- Radioactive Decay- (-1987)