LITHIUM AND ALLOYS - THERMOLUMINESCENCE - Radiation Effects;
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摘要:
Electron beam induced thermoluminescence (TL) from Li** plus implanted Al//2O//3 has been investigated to determine the effect of Li** plus in Al//2O//3 on the TL. Electron beam induced TL curves from an unimplanted sample show TL peaks at 375 K, 440 K, and 460 K. In the TL curves from a Li** plus implanted sample, the 375 K and 460 K TL peaks disappear, while the 440 K TL peaks is enhanced. The 375 K and 460 K peaks are assumed to be associated with F centers and the 440 K TL peak associated with F** plus centers, thus the Li** plus ions convert F centers to F** plus centers through a recombination process with electrons trapped in the F centers. The 440 K TL peak from Li** plus implanted Al//2O//3 is sensitively dependent on the excitation energy of the electrons, which allows the depth profile of Li** plus in Al//2O//3 to be determined.