CONVERSION ELECTRONS AND $gamma$ RAYS OF Tm$sup 16$$sup 5$

Journal Article · Tue Mar 01 04:00:00 EST 1960 · Izvest. Akad. Nauk. S.S.S.R., Ser. Fiz.

OSTI ID:4157434

Gromov, K Ya; Dzhelepov, B S; Dmitriev, A G; Morozov, V A; Yakovlev, K I

The conversion electron spectrum of Tm/sup 165/ was studied with a magnetic spectrometer with a relative half-width of 0.4% and resolving power of 0.4%. The gamma rays were studied with a scintillation spectrometer. The half- width of the Cs/sup 137/ gamma at 661 kev was 12%. Measurements were made on a thulium fraction prepared by chromatographic separation of products from Ta spallation by 660-Mev protons. Chromatographic separation 15 to 20 hours after irradiation produced the following isotopes: Tm/sup 166/(7.7 hours), Tm/sup 165/ (29 hours), and Tm/sup 167/ (9.6 days). It was found that K capture transforms Tm/sup 165/ with half-life of 29 hours into Er/sup 165/, which in turn decays by K capture with half life of 10 hours into stable Ho/sup 165/. The radiation spectra of Tm/sup 165/ above 350 kev are investigated. (R.V.J.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-022376
• OSTI ID: 4157434
• 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

Related Subjects

CAPTURE
CESIUM 137
CHROMATOGRAPHY
CONVERSION
ELECTRONS
ENERGY RANGE
ERBIUM 165
GAMMA RADIATION
HALF-LIFE
HOLMIUM 165
MAGNETS
MEASURED VALUES
NUCLEAR REACTIONS
PHYSICS
PREPARATION
PROTON BEAMS
RESOLUTION
SCINTILLATION COUNTERS
SEPARATION PROCESSES
SPECTROMETERS
TANTALUM
THULIUM 165
THULIUM 166
THULIUM 167
WIDTH