Temperature characteristics of luminescence of 3He-Zn high-pressure plasma under nuclear pumping

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

“…Apparently, in the region of gas excitation, a density of metal vapor is formed that differs from the density of the saturated vapor. It can be assumed that a significant proportion of the metal in lithium is sputtered not only in the form of microdroplets [8,10], but also in the form of separate neutral atoms [20]. The direct contribution of released ions and excited atoms to the radiation is insignificant, as evidenced by the absence of noticeable optical radiation in a vacuum at a lithium layer temperature of 623 K. The intensity of lines of 2p-1s-transitions of noble gases increases with increasing temperature (see Fig.…”

“…In experiments to study the optical radiation of nuclear-excited plasma conducted at nuclear reactors, direct excitation of gaseous medium is usually carried out not by neutron radiation, but by using the products of exothermic nuclear reactions occurring during the interaction of thermal neutrons with 3 Не, 235 U, 10 B, 6 Li nuclei. There are two main methods of excitation: gaseous isotope or its compound ( 3 He, 235 UF 6 ) are part of the gaseous medium; the inner surface of the chamber is coated with a thin layer of an isotope or its compound.…”

“…The processes leading to light emission during metal sputtering into a gaseous medium [5,8] differ from the sputtering processes in the vacuum [9]. Cadmium and zinc sputtering in the gaseous medium during irradiation by the products of nuclear reactions 3 He(n,p) 3 H, α-particles of 238 Pu decay and an electron beam were studied in [8,10,11].…”