PROBABILITIES OF RADIATIVE TRANSITIONS BETWEEN THE ROTATION LEVELS OF Er$sup 166$ AND Tm$sup 169$ NUCLEI

Journal Article · Wed Nov 30 23:00:00 EST 1960 · Izvest. Akad. Nauk. S.S.S.R., Ser. Fiz.

OSTI ID:4066980

Berlovich, E E; Il'in, V V; Kislyakov, A I; Nikitin, M K; Bedike, T

The life-time of the first excitation level (81 kev) for Er/sup 166/ and three levels (118, 139, and 473 kev) for Tm/sup 169/ was studied with a coincidence spectrometer capable of measuring e-e, beta -e, Auger-e, and Auger- Auger type coincidences (e is internal conversion electron and beta is decay electrons). A semilog scale of decay curve is plotted for the first excitation state (2/sup +/ of Er/sup 166/ obtained by measuring the number of K electron coincidences of 184 kev (left branch) and M-electron conversions of 81 kev (right branch). The half life for Er/sup 166/ was found to be T/sub 1/>i = (2.0 plus or minus 0.2) x 10/sup -/s s ec. The decay scheme for Yb/sup 169/ - Tm/sup 169/ is plotted for the lines, and spins and life times are assigned and correlated with published data. (R.V.J.)

• Research Organization: Inst. of Physics and Tech., Academy of Sciences, USSR
• NSA Number: NSA-15-013707
• OSTI ID: 4066980
• 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

ATOMIC MODELS
AUGER EFFECT
BETA DECAY
BETA DETECTION
BETA PARTICLES
BETA SPECTROMETERS
BRANCHING RATIO
COINCIDENCE METHODS
DECAY
DIAGRAMS
EFFICIENCY
ELECTRONS
ENERGY LEVELS
EXCITATION
GAMMA RADIATION
HALF-LIFE
INTERNAL CONVERSION
MEASURED VALUES
NUCLEAR MODELS
PARITY
PHYSICS
ROTATION
SPIN
THULIUM 169
YTTERBIUM 169