Phoswich探测器测量重离子在生物组织中的核碎片

Fragmentation measurement of heavy ions in tissue-like with Phoswich detector

利用 HIRFL (兰州重离子研究装置 )产生的 5 5 Me V/ u的4 0 Ar17+ 离子束 ,用由 Cs I(Tl) +快塑料闪烁探测器组成的 Phoswich探测器 ,以 1.5 mm有机玻璃为等效生物组织材料 ,探索了研究等效生物组织中核碎片测量的方法。对实验中可能出现的问题及解决方法进行了探讨。结果表明探测器对 Z可分辨到 16。元素分辨率为 Z/ ΔZ约为 4 0。

In the paper we explore the method to measure the fragmentation 55MeV/u 40 Ar 17+ of HIRFL pass 1.5mm lucite at radiobiology experimental terminal. With Phoswitch detector which is composed of fast plastic scintillator and CsI(Tl). a method to resolve the problems occured in experiment has teen studied. The results that the dectector can measure Z from 1to 16.The elemental resolution Z /Δ Z ≈40 is achieved