ON THE EXISTENCE OF Te$sup 119$ ISOMERS (in Russian)
Journal Article
·
· Izvest. Akad. Nauk S.S.S.R., Ser. Fiz.
OSTI ID:4082718
The decay of Te/sup 119/ isomers and relative yields of the reaction were studied. The Te/sup 119/ isomers were prepared together with other tellurium isotopes by bombarding KI plates with 250-Mev protons. The tellurium and iodine were separated 15 min following the irradiation. Two radiochemically pure preparations of Te(I) and T(II) formed. Only short-life Te/sup 119/ (12 plus or minus 1 hr) was present in the preparation of Te(II). The beta and gamma spectra of Te(I) and Te(II) were found, and the short-life isomer of Te/ sup 119/ with 660-kev gamma line intensity and weak positron emission of approximately 550 kev was observed. The ratios gamma / beta /sup +/>5, beta / sup +//e/sup -/ approx equal 5. The half life period of Te/sup 119/ was 14 plus or minus 2 hr, the gamma lines (most noticeable E/sub i= 150 and 1200 kev) corresponding to a half life of 5 days were observed in Te(I) while for Te(II) it is T = 12 plus or minus 1 hr. A decay sheme is given for A = 119. The developed data permitted simple determination of the relative production cross sections of I/sup 119/, Te/sup 119/, and Te/sup 11/< s9>s/sup */ by the accumulation of Sb/sup 119/ in Te(I) and Te(II) and by the gamma (660)kev intensity in the preparaticn. The ratio of relative cross sections is sigma / sub Te/ 119 sigma /sub I/119: sigma /sub Te/119*= 1: 1.5:3. The relative cross sections determined by various methods are in good agreement within the order of accuracy of plus or minus 10%. (R.V.J.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-012112
- OSTI ID:
- 4082718
- Journal Information:
- Izvest. Akad. Nauk S.S.S.R., Ser. Fiz., Journal Name: Izvest. Akad. Nauk S.S.S.R., Ser. Fiz. Vol. Vol: 24
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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Related Subjects
ANTIMONY 119
BETA DECAY
BETA DETECTION
BETA PARTICLES
BETA SPECTROMETERS
BRANCHING RATIO
CROSS SECTIONS
DECAY
EFFICIENCY
ENERGY LEVELS
ENERGY RANGE
ERRORS
EXCITATION
GAMMA DETECTION
GAMMA RADIATION
GAMMA SPECTROMETERS
HALF-LIFE
IODINE 119
IRRADIATION
ISOMERS
ISOTOPE SEPARATION
ISOTOPES
MEASURED VALUES
NUCLEAR REACTIONS
PHYSICS
POSITRONS
POTASSIUM IODIDES
PREPARATION
PRODUCTION
PROTON BEAMS
PROTONS
RADIOCHEMISTRY
SPECTRA
TARGETS
TELLURIUM
TELLURIUM 119
BETA DECAY
BETA DETECTION
BETA PARTICLES
BETA SPECTROMETERS
BRANCHING RATIO
CROSS SECTIONS
DECAY
EFFICIENCY
ENERGY LEVELS
ENERGY RANGE
ERRORS
EXCITATION
GAMMA DETECTION
GAMMA RADIATION
GAMMA SPECTROMETERS
HALF-LIFE
IODINE 119
IRRADIATION
ISOMERS
ISOTOPE SEPARATION
ISOTOPES
MEASURED VALUES
NUCLEAR REACTIONS
PHYSICS
POSITRONS
POTASSIUM IODIDES
PREPARATION
PRODUCTION
PROTON BEAMS
PROTONS
RADIOCHEMISTRY
SPECTRA
TARGETS
TELLURIUM
TELLURIUM 119