Zur Kenntnis der Triterpene. (68. Mitteilung). �ber die ?-Elemols�ure
作者:L. Ruzicka、Ed. Rey、M. Spillmann
DOI:10.1002/hlca.19420250626
日期:1942.10.15
Mladenovic, Monatshefte fur Chemie, 1932, vol. 59, p. 228,232
作者:Mladenovic
DOI:——
日期:——
844. The chemistry of the triterpenes and related compounds. Part XXI. Some aspects of the chemistry of the elemi acids
作者:T. G. Halsall、G. D. Meakins、R. E. H. Swayne
DOI:10.1039/jr9530004139
日期:——
Photo- and roentgenoluminescence of ZnSe
作者:V. Ya. Degoda、B. R. Kiyak、V. S. Manzhara、V. E. Rodionov、A. I. Proskura
DOI:10.1007/bf02758061
日期:2000.5
The photoluminescence (PL), roentgenoluminescence (RL), and optical absorption of ZnSe were measured near the fundamental edge in the temperature range from 80 to 400 K. Because of the much smaller absorption coefficient for x-rays as compared to visible light, the contribution to RL from emitting centers located deeper in the sample is higher. The quality of ZnSe can be assessed by correlating its near-edge PL and RL spectra. The temperature dependences of the peak positions of the blue PL and RL bands indicate that these emissions are due to the same center. The blue RL band is redshifted by 18 meV in comparison with Pt,, and its intensity is lower than that of the longer wavelength bands. The different positions of the PL and RL bands are interpreted in terms of thermal spike formation under x-ray excitation and reabsorption of the emitted light.