Aktivierungsanalytische Untersuchungen an hochreinem Silicium

Neutron Activation Analysis of Epitaxial Silicon

“…In this system growth takes place at temperatures significantly below the melting point of the compound grown, thus reducing many of the problems associated with the reactivity of aluminum and general contamination. This technique has yielded n-type AlAs having increased stability and the highest electron mobilities yet reported (4,5).…”

“…Neutron activation analysis meets both of these requirements and has been used for the analysis of bulk silicon (3,4). However, bulk silicon is readily available as large single crystals with samples in the 1-10g size.…”

Nonferrous metallurgy. II. Zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, and tungsten

“…Following ion exchange (203); comparison of methods (68); Ti (547); Hf (84); Nb (65, 66); heat-resistant alloys (80); steel (159, SOI); TJF4 (409); B (548); rocks (208, 512); ashes and ores (537); rubber polymers (283) Following ion exchange (203); Hf ( 84 Steel and U (549); U (185); rocks (78,136) Zr (411,433) With portable source (235); organic materials (128) NbsSn (39) Minerals and ores (228,285,373) Nb (555) With a portable source (235); Ni-Cr films (516); Sn plate (513); ferrochrome (150) Comparison of methods (293); study of conditions (569); U (185,391) Ni (25) Element Study of method (165); Zr (333); ZrOs (166, 178); A1 (249); rocks (78,538) Determination of sensitivities (600); study of separations (517); Zr (333); A1 (248) Steel (566); nuclear materials (288) Determination of sensitivities (600); rocks and minerals (445,446) Nb (125); Fe, Nb (501); Si (157); rocks (472, 538); organic filters (168) Determination of sensitivities (600); study of separations (517); study of method (165); A1 (249, 609); Si (157); biological material (56) Determination of sensitivities…”

“…The same method was applied to chromium-nickel steel alloyed with titanium and tungsten by Opravil,Zitnansky,and Sebestian (381). Neutron activation was used by Gelli,Malvano,and Sacchetti (158) for the determination of tungsten in aluminum and Gebauhr and Martin (157) for the determination of tungsten in highpurity silicon.…”

“…Jaskolska, Wodkiewicz, and Minczewski(217) combined solvent extraction separations with the neutron activation technique for the determination of trace impurities including molybdenum. Neutron activation was used by Grosse-Ruyken and Doege(177) for the determination of molybdenum in tungsten, byGebauhr and Martin(157) for molybdenum in silicon, byYamada (591) for molybdenum in soil, and by Healy and Bate(194) for molybdenum in hair and wool. Stary and Ruzicka (517) separated the elements being determined by extraction with substoichiometric amounts of reagent before determination VOL.…”