用keV单能电子束激发塑料闪烁体产生的发光光谱的研究

The Exploration of Luminescence Spectra of Plastic Scintillator Excited by keV Single-energy Electron Beam

用3keV和5keV的单能电子束激发塑料闪烁体,分别测量了样品的透射和背向的发光光谱。发现背向发光光谱比透射发光光谱具有丰富得多的短波成分。研究表明,这种差异是闪烁体自吸收造成的,背向的发光光谱是闪烁体自身无自吸收畸变的本征发光光谱。 本文还对比研究了塑料闪烁体的光致发光光谱。

The transmiting and the backward Luminescence spectra of plastic scinti-llator excited by single-energy electron beam of 3 keV and 5 keV were mearsured.lt shows that the backward spectra have more plentiful shortwave components than that of the transmissjon spectra,The analysis indie- ates that this difference is caused by the self-absorption of the samplesj and the backward spectra are the intrinsic spectra without distortion of the s.elf-absorption. In contrast to this, the photoexcitation spectra of the plastic scintillator were also mearued.