The WWR-K is 6-MW(thermal) light-water, tank-type reactor with thermal neutron spectrum. It is the exclusive multipurpose research reactor in the Republic of Kazakhstan. The WWR-K is owned by the I...

The WWR-K Reactor Experimental Base for Studies of the Tritium Release from Materials Under Irradiation

Experiments on tritium generation and yield from lithium ceramics during neutron irradiation

This paper describes the facilities of the Institute of Atomic Energy of the National Nuclear Centre of the Republic of Kazakhstan (IAE NNC RK) (Kurchatov, Kazakhstan) designed to conduct studies o...

Research Facilities of IAE NNC RK (Kurchatov) for Investigations of Tritium Interaction with Structural Materials of Fusion Reactors

The luminescence of Kr-Xe, Ar-Kr, and Ar-Xe mixtures was studied in the spectral range 300–970 nm when excited by 6Li (n, α)3 H nuclear reaction products in the core of a nuclear reactor. Lithium was deposited on walls of experimental cell in the form of a capillary-porous structure, which made it possible to measure up to a temperature of 730 K. The temperature dependence of the radiation intensity of noble gas atoms, alkali metals, and heteronuclear ionic noble gas molecules was studied. Also, as in the case of single-component gases, the appearance of lithium lines and impurities of sodium and potassium is associated with vaporization during the release of nuclear reaction products from the lithium layer. The excitation of lithium atoms occurs mainly as a result of the Penning process of lithium atoms on noble gas atoms in the 1s states and subsequent ion-molecular reactions. Simultaneous radiation at transitions of atoms of noble gases and lithium, heteronuclear ion molecules of noble gases allows us to increase the efficiency of direct conversion of nuclear energy into light.

/pdf/emission-of-noble-gases-binary-mixtures-under-excitation-by-58gkl3kq6k.pdf

Emission of Noble Gases Binary Mixtures under Excitation by the Products of the 6Li (n, α)3 H Nuclear Reaction

Research results of luminescence spectra of noble gases and Ar–Xe, Ar–Kr, and Kr–Xe mixtures under the excitation by products of nuclear reaction in the core of a stationary nuclear reactor with 0.87 × 1014 n/cm2s thermal neutron flux are described in the article. The emission spectra of noble gases are similar to the obtained spectrum under the excitation by the 40Ar+7 ion beam from the DC-60 accelerator. Bands in spectra of the binary mixtures of noble gases are connected with the radiation on heteronuclear ion molecule transitions. The appearance of the lines of alkali metal atoms at the temperature increase of gas chamber is explained by sputtering of the lithium layer via nuclear reaction products as well as ionized and excited particles of the buffer gas.

Emission of noble gases and their mixtures with lithium excited by the products of the 6 Li(n,α) 3 H nuclear reaction

The main goal of the carried out investigations was to examine behaviour of hydrogen isotopes (and evaluation of interaction parameters such as coefficients of diffusion, permeation and solubility)...

Research of Reactor Radiation Influence upon Processes of Hydrogen Isotopes Interaction with Materials of the Fusion Facility

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Research of Reactor Radiation Influence upon Processes of Hydrogen Isotopes Interaction with Materials of the Fusion Facility