Sidhu, M S; Chahat, Paramjit; Singh, R J, Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1993, vol. 32, # 6, p. 517 - 520
Crossed molecular beams studies of the reactions of uranium with selected oxidizers
作者:Neil C. Lang、Richard C. Stern、Michael G. Finley
DOI:10.1016/0009-2614(80)85067-6
日期:1980.1
Angular distributions of UO produced from the reaction of U with O2, NO, NO2, and SO2 were measured using crossedmolecularbeams. Total cross sections for these four reactions as well as for U + N3O and U + CO2 were estimated from product scattering signals. The cross sections range from 33 Å2 for U + NO to 1 Å2 for U + CO2, and U + N2O.
使用交叉分子束测量由U与O 2,NO,NO 2和SO 2反应产生的UO的角分布。从产物散射信号估计这四个反应以及U + N 3 O和U + CO 2的总横截面。的横截面范围从33埃2为U + NO:1的2为U + CO 2,和U + N 2 O.
Matrix infrared spectra of the products of uranium-atom reactions with carbon monoxide and carbon dioxide
作者:Thomas J. Tague、Lester Andrews、Rodney D. Hunt
DOI:10.1021/j100144a004
日期:1993.10
Uranium atoms from pulsed Nd:YAG laser ablation of a uranium metal target were codeposited with carbon monoxide and carbon dioxide in excess argon at 10 K. Infrared spectra following the U + CO reaction revealed strong new absorption bands at 804.4 and 852.6 cm-1, which are assigned to the CUO product on the basis of isotopic shifts, FG matrix calculations, and ab initio pseudopotential calculations. An absorption at 2027.5 cm-1 is attributed to the asymmetric secondary reaction product CU(O)CO. In both the U + CO and U + CO2 reactions, bands at 870.9 and 1963.8 cm-1 were observed and assigned to the association product Of UO2 and CO. Lastly, in the U + CO2 experiments, new absorption band pairs were observed at 804.4 and 1799.6 cm-1 and at 801.5 and 2011.7 cm-1. The former pair was almost destroyed on annealing and is assigned to the OUCO insertion product. The latter pair is attributed to an OCU(O)CO species. The direct reaction of U atoms with CO and CO2 requires an activation energy, which is provided by hyperthermal U atoms from pulsed laser evaporation.