Optical Radiation from the Sputtered Species under Excitation of Ternary Mixtures of Noble Gases by the 6Li(n,α)3H Nuclear Reaction Products

Eurasian Chemico-Technological Journal

E. Batyrbekov¹  Yu. Baklanova²  I. Kenzhina²  M. Khasenov²  I. Karambayeva²  K. Samarkhanov²  Yu. Gordienko³  Ye. Tulubayev⁴ 

[1] School of Sciences and Humanities, Nazarbayev University, 53 Kabanbay Batyr Ave., Nur-Sultan, Kazakhstan;Institute of Atomic Energy Branch of the National Nuclear Center of the Republic of Kazakhstan, 10 Beybit Atom str., Kurchatov, Kazakhstan;National Nuclear Center of the Republic of Kazakhstan, 2 Beybit Atom str., Kurchatov, Kazakhstan;al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty, Kazakhstan;

关键词: nuclear reaction;    sputtering;    noble gases;    alkali metals;    level population;   

DOI  :  10.18321/ectj1079

来源: DOAJ

【 摘 要 】

The present paper examines the luminescence of ternary Ar-Kr-Xe and Ne-Ar-Kr mixtures of noble gases in the spectral range from 300 to 970 nm, excited by the 6Li(n,α)3H nuclear reaction products in the core of a nuclear reactor. A thin layer of lithium applied on the walls of the experimental device, stabilized in the matrix of the capillary-porous structure, serves as a source of gas excitation. During in-pile tests, conducted at the IVG.1M research reactor, thermal neutrons interact via the 6Li(n,α)3H reaction, and the emergent alpha particles with a kinetic energy of 2.05 MeV and tritium ions with a kinetic energy of 2.73 MeV excite gaseous medium. The study was carried out in a wide temperature range. The temperature dependence of the intensity of the emission of the atoms of noble gases and alkali metals, heteronuclear ionic molecules of noble gases were studied. The obtained values of the activation energy of the emission process 1.58 eV for lithium and 0.72 eV for potassium agree well with the known values of evaporation energy. Excitation of alkali metals atoms occurs consequently of the Penning process of alkali metals atoms on noble gas atoms in the 1s-states and further ion-molecular reactions.

【 授权许可】

Unknown