caa a22 4500 465732453 CHVBK 20180323111745.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF02117566 doi (NATIONALLICENCE)springer-10.1007/BF02117566 Preparation of rare metallic actinides (248Cm,249Bk,249Cf) and investigation of their crystal structure [Elektronische Daten] [A. Seleznev, V. Radchenko, V. Shushakov, M. Ryabinin, R. Droznik, L. Lebedeva, V. Vasilyev] 248Cm and249Bk metals were prepared by thermal reduction of their oxides with thorium and metallic249Cf with metallic lanthanum. These rare actinide samples of 1.0 mg in mass were thin layers on a flat substrate and were investigated by X-ray technique. Dhcp lattice parameters of α-Cm, α-Bk and α-Cf as main phases in X-ray diagrams are presented. The effect of impurities on the α-Cm lattice parameters is shown. Fcc lattices for the high temperature form of Cm metal (β-Cm) with a=0.4933 nm, and of Cm and Bk monoxides (a=0.502-0.504 nm and a=0.5002 nm, respectively) have been observed. Thermal expansion coefficients for α-Cm and α-Bk at 80-300 K were calculated. Identification problems of fcc lattices and oxidation features of metals prepared are discussed. Akadémiai Kiadó, 1990 Seleznev A. RIAR, Dimitrovgrad, (USSR) aut Radchenko V. RIAR, Dimitrovgrad, (USSR) aut Shushakov V. RIAR, Dimitrovgrad, (USSR) aut Ryabinin M. RIAR, Dimitrovgrad, (USSR) aut Droznik R. RIAR, Dimitrovgrad, (USSR) aut Lebedeva L. RIAR, Dimitrovgrad, (USSR) aut Vasilyev V. RIAR, Dimitrovgrad, (USSR) aut Journal of Radioanalytical and Nuclear Chemistry Articles Springer Netherlands 143/1(1990-11-01), 253-259 0236-5731 143:1<253 1990 143 10967 https://doi.org/10.1007/BF02117566 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02117566 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Seleznev A. RIAR, Dimitrovgrad, (USSR) aut NATIONALLICENCE 700 1- Radchenko V. RIAR, Dimitrovgrad, (USSR) aut NATIONALLICENCE 700 1- Shushakov V. RIAR, Dimitrovgrad, (USSR) aut NATIONALLICENCE 700 1- Ryabinin M. RIAR, Dimitrovgrad, (USSR) aut NATIONALLICENCE 700 1- Droznik R. RIAR, Dimitrovgrad, (USSR) aut NATIONALLICENCE 700 1- Lebedeva L. RIAR, Dimitrovgrad, (USSR) aut NATIONALLICENCE 700 1- Vasilyev V. RIAR, Dimitrovgrad, (USSR) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Articles Springer Netherlands 143/1(1990-11-01), 253-259 0236-5731 143:1<253 1990 143 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer