RECOILLESS EMISSION AND ABSORPTION OF 26 keV $gamma$-RAY OF $sup 161$Dy
Journal Article
·
· Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B
OSTI ID:4032090
Recoilless emission and resonance absorption of the 26-kev gamma ray emitted ih the beta decay of Tb>s1/sup >> /re observed. The existence of the first excited stute of Dy>s1/sup >> / 26 kev is thus confirmed. From the measurement of the transmission of this gamma ray through various thicknesses of the Dy/sub 2/O/sub 3/ absorber, the percentages of recoilless emission and recoilless absorption were estimated to be (10 plus or minus 2)% and (6.5 plus or minus 2)%, respectively. From the curve showing the change in the transmission as a function of the relative velocity of the source and the absorber, the width of the 26-kev state (for an absorber thickness of 19.65 mg/ cm>s2/sup )/as found to be about 1.04 x 10>s-/sup > /, which is about 70 times what is expected from the measured half life of this state. (auth)
- Research Organization:
- Tata Inst. of Fundamental Research, Bombay
- NSA Number:
- NSA-15-017592
- OSTI ID:
- 4032090
- Journal Information:
- Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B, Journal Name: Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B Vol. Vol: (10), 19; ISSN NUCIA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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