Tb$sup 160$ AND Ho$sup 160$ DECAY AND Dy$sup 160$ LEVEL SCHEMES (in Russian)
Journal Article
·
· Izvest. Akad. Nauk S.S.S.R. Ser. Fiz.
OSTI ID:4326299
BS>Radioactive Tb/sup 160 was prepared by slow neutron irradiation of chemically pure (99.99%) Tb/sub 2/O/sub 3/. Beta, conversion electron, and photoelectron spectra were studied on a double-focusing BETA spectrometer wlth halfwidth line 0.3 to 0.6%. Beta and conversion spectra of Tb/sup 160/ are shown. Tb/sup 160/ gamma rays at 880 and 963-966 kev (Th target) are also shown. Radioactive Ho/sup 160/ was prepared by irradiation of a tantalum target with 660- Mev protons, with chromatographic recovery of erbium and holmium fractions. The conversion spectra were studied on the same double focusing spectrometer with half-width line 0.3%. Some areas of Ho/sup 160/ conversion spectra are presented graphically (lines L/sub I+II/, L/sub III/, M, and N of isomeric transitions in Ho/sup 160/ with h nu ' 60.0 kev and doublets 8.731-879.9 kev and 963.4-966.6 kev). The multiplicities of the Dy/sup 160/ transitions were determined from the magnitudes of the relative conversion coefficients K: L and L/sub I/: L/sub II/: L/sub III/ in Tb/sup 160/ and Ho/sup 160/ conversion electron spectra and from the magnitudes of absolute conversion coefficients which are obtained in the Tb/ sup 160/ decay. The scheme of Dy/sup 160/ levels was developed, and the facts supporting and contradicting the proposed scheme are enumerated and discussed. (R.V.J.)
- Research Organization:
- Zhdanov Leningrad State Univ.
- NSA Number:
- NSA-12-013422
- OSTI ID:
- 4326299
- Journal Information:
- Izvest. Akad. Nauk S.S.S.R. Ser. Fiz., Journal Name: Izvest. Akad. Nauk S.S.S.R. Ser. Fiz. Vol. Vol: 22
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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Related Subjects
BETA PARTICLES
BETA SPECTROMETERS
CHROMATOGRAPHY
DECAY
DIAGRAMS
DYSPROSIUM 160
ELECTRONS
ENERGY LEVELS
ERBIUM
EXCITATION
GAMMA RADIATION
HOLMIUM
HOLMIUM 160
IMPURITIES
INTERNAL CONVERSION
IRRADIATION
LENSES
MEASURED VALUES
MULTIPLICITY
NUCLEAR MODELS
PHOTOPRODUCTION
PHYSICS
PROTON BEAMS
RADIOACTIVITY
RESOLUTION
SEPARATION PROCESSES
SPECTRA
TANTALUM
TARGETS
TERBIUM 160
TERBIUM OXIDES
THERMAL NEUTRONS
TRANSIENTS
BETA SPECTROMETERS
CHROMATOGRAPHY
DECAY
DIAGRAMS
DYSPROSIUM 160
ELECTRONS
ENERGY LEVELS
ERBIUM
EXCITATION
GAMMA RADIATION
HOLMIUM
HOLMIUM 160
IMPURITIES
INTERNAL CONVERSION
IRRADIATION
LENSES
MEASURED VALUES
MULTIPLICITY
NUCLEAR MODELS
PHOTOPRODUCTION
PHYSICS
PROTON BEAMS
RADIOACTIVITY
RESOLUTION
SEPARATION PROCESSES
SPECTRA
TANTALUM
TARGETS
TERBIUM 160
TERBIUM OXIDES
THERMAL NEUTRONS
TRANSIENTS