Measurement of lifetimes of 159Er and 161Er excited states
Creators
- 1. Samarkandskij Gosudarstvennyj Univ. (USSR)
- 2. Joint Inst. for Nuclear Research, Dubna (USSR). Lab. of Nuclear Problems
- 3. AN Uzbekskoj SSR, Tashkent. Inst. Yadernoj Fiziki
Description
Lifetimes of 159Er and 161Er lower excited states have been measured by the delayed coincidence technique at 159Tm and 161Tm radioactive decay. The results are as follows: Tsub(1/2)<=0.2ns for 59.3 keV and Tsub(1/2)=340+-20ns for 182.6 keV in159Er; Tsub(1/2)<=0.17ns for 59.5 keV, Tsub(1/2)<=0.20ns for 143.9 keV, Tsub(1/2)0.45+-0.05ns for 172.1keV, Tsub(1/2) =71+-7ns for 189.4 keV, Tsub(1/2)=2.2+-0.2ns for 267.5 keV and Tsub(1/2)<=0.3ns for 266.4 keV in 161Er. Reduced probabilities of electromagnetic transitions discharging the 159Er and 161Er states in question have been determined using the experimental values lifetimes, data on intensities and multipole structure of gamma-transitions. The data obtained are in an agreement with the systematics available for probabilities of analogous transitions in the neighbouring deformed nuclei
Availability note (English)
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Additional details
Additional titles
- Original title (Russian)
- Измерение времен жизни возбужденных состояний
Publishing Information
- Imprint Pagination
- 13 p.
- Report number
- JINR-R--6-12220
INIS
- Country of Publication
- USSR
- Country of Input or Organization
- USSR
- INIS RN
- 10493335
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BETA DECAY; ELECTRON SPECTRA; ENERGY-LEVEL TRANSITIONS; ERBIUM 159; EXCITED STATES; EXPERIMENTAL DATA; GAMMA RADIATION; LIFETIME; PROBABILITY; TABLES; THULIUM 159
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; DATA; DATA FORMS; DECAY; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; ENERGY LEVELS; ERBIUM ISOTOPES; EVEN-ODD NUCLEI; INFORMATION; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOTOPES; NUCLEAR DECAY; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; RADIATIONS; RADIOISOTOPES; RARE EARTH NUCLEI; SPECTRA; THULIUM ISOTOPES
Optional Information
- Notes
- 29 refs.; 1 table; 3 figs.; submitted to the journal Nucleonika.