Half-life of /sup 44/Ti

Journal Article · Sat Oct 01 04:00:00 EDT 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.28.1756· OSTI ID:5539350

Frekers, D; Henning, W; Kutschera, W; Rehm, K E; Smither, R K; Yntema, J L; Santo, R; Stievano, B; Trautmann, N

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-31109-ENG-38
• OSTI ID: 5539350
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 28:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651522* -- Nuclear Properties & Reactions
A=39-58
Experimental-- Radioactive Decay-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
DATA
DAYS LIVING RADIOISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ELECTROSTATIC ACCELERATORS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
GAMMA SPECTRA
HALF-LIFE
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MASS SPECTROMETERS
MEASURING INSTRUMENTS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
RADIOISOTOPES
SCANDIUM 44
SCANDIUM ISOTOPES
SPECTRA
SPECTROMETERS
TANDEM ELECTROSTATIC ACCELERATORS
TITANIUM 44
TITANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES