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Title: Effect of laser irradiation of nanoparticles in aqueous uranium salt solutions on nuclide activity

Abstract

This paper presents an experimental study of the effect of laser irradiation of aqueous uranyl chloride solutions containing gold nanoparticles on the activity of the uranium series radionuclides {sup 234}Th, {sup 234m}Pa, and {sup 235}U. The solutions were exposed to femtosecond Ti:sapphire laser pulses and to the second or third harmonic of a Nd:YAG laser (150-ps pulses) at a peak intensity in the medium of {approx}10{sup 12} W cm{sup -2}. The activities of the radionuclides in the irradiated solutions were shown to differ markedly from their equilibrium values. The sign of the deviation depends on the laser wavelength. The measured activity deviations can be interpreted as evidence that laser exposure of nanoparticles accelerates the alpha and beta decays of the radionuclides. The observed effects are accounted for in terms of a mechanism that involves resonant enhancement of optical waves by metallic nanoparticles. (interaction of laser radiation with matter)

Authors:
;  [1]
  1. A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
21552641
Resource Type:
Journal Article
Journal Name:
Quantum Electronics (Woodbury, N.Y.)
Additional Journal Information:
Journal Volume: 41; Journal Issue: 7; Other Information: DOI: 10.1070/QE2011v041n07ABEH014554; Journal ID: ISSN 1063-7818
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; AQUEOUS SOLUTIONS; BETA DECAY; GOLD; LASER RADIATION; NANOSTRUCTURES; NEODYMIUM LASERS; PARTICLES; PROTACTINIUM 234; PULSES; SAPPHIRE; THORIUM 234; URANIUM 235; URANYL CHLORIDES; WAVELENGTHS; ACTINIDE COMPOUNDS; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHLORIDES; CHLORINE COMPOUNDS; CORUNDUM; DAYS LIVING RADIOISOTOPES; DECAY; DISPERSIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HALIDES; HALOGEN COMPOUNDS; HEAVY NUCLEI; HOMOGENEOUS MIXTURES; HOURS LIVING RADIOISOTOPES; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LASERS; METALS; MINERALS; MINUTES LIVING RADIOISOTOPES; MIXTURES; NUCLEAR DECAY; NUCLEI; ODD-ODD NUCLEI; OXIDE MINERALS; PROTACTINIUM ISOTOPES; RADIATIONS; RADIOISOTOPES; SOLID STATE LASERS; SOLUTIONS; SPONTANEOUS FISSION RADIOISOTOPES; THORIUM ISOTOPES; TRANSITION ELEMENTS; URANIUM COMPOUNDS; URANIUM ISOTOPES; URANYL COMPOUNDS; YEARS LIVING RADIOISOTOPES

Citation Formats

Simakin, Aleksandr V, and Shafeev, Georgii A. Effect of laser irradiation of nanoparticles in aqueous uranium salt solutions on nuclide activity. United States: N. p., 2011. Web. doi:10.1070/QE2011V041N07ABEH014554.
Simakin, Aleksandr V, & Shafeev, Georgii A. Effect of laser irradiation of nanoparticles in aqueous uranium salt solutions on nuclide activity. United States. doi:10.1070/QE2011V041N07ABEH014554.
Simakin, Aleksandr V, and Shafeev, Georgii A. Sun . "Effect of laser irradiation of nanoparticles in aqueous uranium salt solutions on nuclide activity". United States. doi:10.1070/QE2011V041N07ABEH014554.
@article{osti_21552641,
title = {Effect of laser irradiation of nanoparticles in aqueous uranium salt solutions on nuclide activity},
author = {Simakin, Aleksandr V and Shafeev, Georgii A},
abstractNote = {This paper presents an experimental study of the effect of laser irradiation of aqueous uranyl chloride solutions containing gold nanoparticles on the activity of the uranium series radionuclides {sup 234}Th, {sup 234m}Pa, and {sup 235}U. The solutions were exposed to femtosecond Ti:sapphire laser pulses and to the second or third harmonic of a Nd:YAG laser (150-ps pulses) at a peak intensity in the medium of {approx}10{sup 12} W cm{sup -2}. The activities of the radionuclides in the irradiated solutions were shown to differ markedly from their equilibrium values. The sign of the deviation depends on the laser wavelength. The measured activity deviations can be interpreted as evidence that laser exposure of nanoparticles accelerates the alpha and beta decays of the radionuclides. The observed effects are accounted for in terms of a mechanism that involves resonant enhancement of optical waves by metallic nanoparticles. (interaction of laser radiation with matter)},
doi = {10.1070/QE2011V041N07ABEH014554},
journal = {Quantum Electronics (Woodbury, N.Y.)},
issn = {1063-7818},
number = 7,
volume = 41,
place = {United States},
year = {2011},
month = {7}
}