Acta Optica Sinica, Volume. 26, Issue 9, 1429(2006)
Study on CsI(Tl) Scintillating Crystal for XRay High-Resolution Detection with Monte Carlo Method
A Xray detector, based on the CsI(Tl) scintillating crystal and areaarray CCD, using fiber and fiber optic plate to couple and transmit light with fanbeam linear array scanning, has been put forth. The luminescent efficiency and Xray high-resolution detection are directly influenced by the dimension of CsI(Tl) scintillating crystal, and Monte Carlo method is adopted to simulate the influences, including the relations between the energy of Xray, the distance between Xray source and the scintillating crystal, and the thickness of CsI(Tl) crystal and the Xray energy distribution, and then the whole energy peak efficiency and the transition efficiency. The results show that while the Xray energy is of 120~450 keV, and the thickness of CsI(Tl) crystal is 0.3~1.5 cm, the whole energy peak is within the range of 31.34%~96.74%, and the transition efficiency is within the range of 12.8%~97.43%. So, the Xray energy and the dimension of CsI(Tl) scintillating crystal are the most important parameters determining the Xray high resolution detection. It has certain referenced values to optimize the dimension design of CsI(Tl) scintillating crystal for Xray high resolution detection.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Study on CsI(Tl) Scintillating Crystal for XRay High-Resolution Detection with Monte Carlo Method[J]. Acta Optica Sinica, 2006, 26(9): 1429