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15 June 1995 Fluorescence of metachrome in the far- and vacuum-ultraviolet spectral region
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Some measurements have been performed in order to fully characterize metachrome as down- converter fluorescent layer in the far and vacuum ultraviolet, from 46 up to 254 nm. In particular, a couple of samples having different thickness provided by Photometrics Inc. have been tested and their performances have been compared with the ones obtained by tetraphenyl butadiene (TPB), another scintillator widely used in this spectral region. The emission angular distribution, the fluorescent spectrum and the absolute conversion efficiencies have been measured for all the phosphors. The results show that TPB offers higher efficiency than metachrome, but also that the latter is well efficient in all the investigated spectral region. This is interesting in the case of using this phosphor as down-converter with silicon detectors, so permitting for example to have CCD sensitive also in the extreme ultraviolet region.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Giampiero Naletto, Emanuele Pace, Leonardo Placentino, and Giuseppe Tondello "Fluorescence of metachrome in the far- and vacuum-ultraviolet spectral region", Proc. SPIE 2519, X-Ray and Ultraviolet Sensors and Applications, (15 June 1995);

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