Laser Beam Transmission by Inorganic Liquid Activated by Neodymium and Uranyl in Pulsed Excitation by Uranium Fission Fragments

Abstract

The transmission of 1.054 μm probing laser radiation by laser liquid $$ {\mathrm{POCl}}_{3^{\hbox{--} }}{{\mathrm{SnCl}}_{4^{\hbox{--}}}}^{235}{\mathrm{UO}}_2^{2+}\hbox{--} {\mathrm{Nd}}^{3+} $$ excited by uranium fission fragments was measured. It is shown that for liquid pressure 10.1 MPa the transmission of the liquid does not exceed 1. It is found that the transmission of the liquid in the active element with aperture 25 mm is approximately 4 times lower than in an element with aperture 10 mm. A qualitative explanation of the observed effect is proposed on the basis of the assumption that light was scattered by radial acoustic density waves in the liquid. This effect can serve as one of the primary reasons for the absence of lasing during nuclear pumping of the liquid under discussion. Methods of reducing the influence of this effect are examined.