Spectroscopic characterization of composite lithium materials irradiated with high-temperature plasma

Abstract

High-temperature plasma irradiation of materials leads to significant modification of surface structure, growth of deposited composite films and surface layers with induced self-similar granularity on the scale from macroscales to nanoscale due to strong plasma-surface interaction. The aim of this study was to characterize lithium materials irradiated with high-temperature plasma in the T-10 tokamak and PLM device. The reactivity of lithium leads to reactions with impurities in the plasma and on the vessel. Post-mortem analyses by the X-ray photoemission spectroscopy and X-ray analysis have been used to identify deposits composition and morphology. Lithium carbonate composites have been detected by analysis demonstrating materials mixing and evidence of plasmainduced structure. New structures with the high specific surface area of hierarchical granular are registered. The reference industrial powder of lithium carbonate irradiated with steady-state plasma in the PLM device has acquired a new similar structure demonstrating universal influence of plasma on the structure of irradiated materials.

Heat Transfer on Micro and Nanostructured Rough Surfaces Synthesized by Plasma

“…The surfaces with cauliflower-like nano-and microstructures were found on other materials-Carbon [31,32], beryllium [1], molybdenum, and lithium [39] after plasma irradiation in fusion devices. Such experimental observations indicate a universal mechanism of growth of a nanostructured surface of the "cauliflower" type.…”

Изучение Диодных Свойств Двойного Слоя Комбинированного Газового Разряда

“…Рассмотрению воздействия тлеющего и СВЧ газовых разрядов на поверхность изделий посвящено большое количество экспериментальных и теоретических работ [18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Так, в работах [30,31] обсуждается обработка изделий, размещенных вблизи антенны -катода внутри резонаторной камеры, заполненной аргоном при давлении P = 40−130 Pa, в облаке сверхплотной плазмы ω P = n e e 2 /ε 0 m e > ω, где e -элементарный электрический заряд, m e -масса электрона, ω = 1.54 • 10 10 s −1 -частота колебаний СВЧ поля, создаваемого магнетроном.…”

A study of anode area physical parameters of asymmetric combined gas discharge

“…The results of a study of a radio-frequency discharge in hydrogen arising between parallel plates when a positive or negative bias potential is applied to one of them are presented in [ 24 ]. It was shown in [ 25 ] that high-temperature plasma irradiation of lithium materials leads to a significant modification of the surface structure, the growth of deposited composite films and surface layers with induced self-similar grain size due to strong plasma-surface interaction. Development of surface modification radiation technology: paper [ 26 ] is devoted to ion cleaning and high-dose ion implantation.…”