skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Decay of {sup 161m1,m2}Dy isomers under conditions of a resonance environment (Moessbauer Screen)

Abstract

The half-lives of the isomers {sup 161m1}Dy and {sup 161m2}Dy (E = 25.6 keV and T{sub 1/2} {approx} 30 ns for the former and E = 74.6 keV and T{sub 1/2} {approx} 3 ns for the latter) placed in a {sup 160}Gd{sub 2}O{sub 3} crystal lattice at T = 300 K and surrounded by stable {sup 161}Dy nuclei in the composition of {sup 161}Dy{sub 2}O{sub 3} were measured by the method of ({beta}-{gamma}) coincidences in the beta-decay process {sup 161}Tb {yields} {sup 161}Dy. Nuclei of {sup 161m1,m2}Dy were obtained according to the chain {sup 160}Gd(n, {gamma}){sup 161}Gd {yields} {sup 161}Tb {yields} {sup 161}Dy from {sup 160}Dy{sub 2}O{sub 3} weighted portions irradiated at the PWR-M reactor of the Petersburg Nuclear Physics Institute (PNPI, Gatchina, Russia). The T{sub 1/2} value observed for the isomer {sup 161m1}Dy was found to be correlated with the number of surrounding {sup 161}Dy nuclei. The presence of this correlation in {sup 161m1}Dy can be explained by the multiple resonance scattering of photons from isomer decay within the sample used. No such correlation was observed for {sup 161m2}Dy. The half-lives measured for the isomers {sup 161m1}Dy and {sup 161m2}Dy in the absence of the above environment are 29.2(1)more » and 3.50(1) ns, respectively.« less

Authors:
; ; ;  [1]
  1. Russian Academy of Sciences, Petersburg Nuclear Physics Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22126466
Resource Type:
Journal Article
Journal Name:
Physics of Atomic Nuclei
Additional Journal Information:
Journal Volume: 76; Journal Issue: 6; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7788
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BETA DECAY; CRYSTAL LATTICES; DYSPROSIUM 160; DYSPROSIUM 161; DYSPROSIUM OXIDES; GADOLINIUM 160; GADOLINIUM 161; GADOLINIUM OXIDES; HALF-LIFE; ISOMERS; KEV RANGE; MOESSBAUER EFFECT; PHOTONS; PWR TYPE REACTORS; RESONANCE SCATTERING; TERBIUM 161

Citation Formats

Loginov, Yu. E., E-mail: yurlo@pnpi.spb.ru, Zinoviev, V. G., Kabina, L. P., Lisin, S. S., and Maljutenkov, Ed. I. Decay of {sup 161m1,m2}Dy isomers under conditions of a resonance environment (Moessbauer Screen). United States: N. p., 2013. Web. doi:10.1134/S1063778813060100.
Loginov, Yu. E., E-mail: yurlo@pnpi.spb.ru, Zinoviev, V. G., Kabina, L. P., Lisin, S. S., & Maljutenkov, Ed. I. Decay of {sup 161m1,m2}Dy isomers under conditions of a resonance environment (Moessbauer Screen). United States. https://doi.org/10.1134/S1063778813060100
Loginov, Yu. E., E-mail: yurlo@pnpi.spb.ru, Zinoviev, V. G., Kabina, L. P., Lisin, S. S., and Maljutenkov, Ed. I. 2013. "Decay of {sup 161m1,m2}Dy isomers under conditions of a resonance environment (Moessbauer Screen)". United States. https://doi.org/10.1134/S1063778813060100.
@article{osti_22126466,
title = {Decay of {sup 161m1,m2}Dy isomers under conditions of a resonance environment (Moessbauer Screen)},
author = {Loginov, Yu. E., E-mail: yurlo@pnpi.spb.ru and Zinoviev, V. G. and Kabina, L. P. and Lisin, S. S. and Maljutenkov, Ed. I.},
abstractNote = {The half-lives of the isomers {sup 161m1}Dy and {sup 161m2}Dy (E = 25.6 keV and T{sub 1/2} {approx} 30 ns for the former and E = 74.6 keV and T{sub 1/2} {approx} 3 ns for the latter) placed in a {sup 160}Gd{sub 2}O{sub 3} crystal lattice at T = 300 K and surrounded by stable {sup 161}Dy nuclei in the composition of {sup 161}Dy{sub 2}O{sub 3} were measured by the method of ({beta}-{gamma}) coincidences in the beta-decay process {sup 161}Tb {yields} {sup 161}Dy. Nuclei of {sup 161m1,m2}Dy were obtained according to the chain {sup 160}Gd(n, {gamma}){sup 161}Gd {yields} {sup 161}Tb {yields} {sup 161}Dy from {sup 160}Dy{sub 2}O{sub 3} weighted portions irradiated at the PWR-M reactor of the Petersburg Nuclear Physics Institute (PNPI, Gatchina, Russia). The T{sub 1/2} value observed for the isomer {sup 161m1}Dy was found to be correlated with the number of surrounding {sup 161}Dy nuclei. The presence of this correlation in {sup 161m1}Dy can be explained by the multiple resonance scattering of photons from isomer decay within the sample used. No such correlation was observed for {sup 161m2}Dy. The half-lives measured for the isomers {sup 161m1}Dy and {sup 161m2}Dy in the absence of the above environment are 29.2(1) and 3.50(1) ns, respectively.},
doi = {10.1134/S1063778813060100},
url = {https://www.osti.gov/biblio/22126466}, journal = {Physics of Atomic Nuclei},
issn = {1063-7788},
number = 6,
volume = 76,
place = {United States},
year = {Sat Jun 15 00:00:00 EDT 2013},
month = {Sat Jun 15 00:00:00 EDT 2013}
}