FIELD: technical physics. SUBSTANCE: method involves application of pulse electron beam towards material under investigation, braking anode flame, which emits from material, generation of plasma spray, which drains from shock-compressed region, measuring integrated and resolved absorption spectrum of material in order to detect its elementary composition. Cathode unit of device is designed as hollow cylinder with sharp face edge, slot about its envelope and mobile bottom. EFFECT: increased sensitivity, validity of measurement. 2 cl, 15 dwg, 2 tbl
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