The aim of the performed technical attenuation length measurement is to compare light attenuation of a few commercially available plastic scintillator strips and to select the best scintillator type for the total-body Jagiellonian Positron Emission Tomograph (J-PET) construction. Few models of plastic scintillators obtained from different manufacturers were tested. All strips had the same rectangular cross section and dimensions 6 mm $\times \,\,24$ mm $\times \,\,1000$ mm with all surfaces polished. The light attenuation length was measured by exciting the scintillator strip at different positions with an ultraviolet lamp emitting at 365 nm and reading light signal collected at one side of the strip by a silicon photodiode. Among measured plastic scintillators, EJ-200 possesses the highest technical light attenuation length and is suitable for construction of total-body J-PET scanner.

中文翻译：

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用于全身 J-PET 扫描仪的塑料闪烁体条的技术衰减长度测量


进行技术衰减长度测量的目的是比较一些市售塑料闪烁体条的光衰减，并为全身雅盖隆正电子发射断层扫描 (J-PET) 结构选择最佳闪烁体类型。测试了从不同制造商获得的几种塑料闪烁体模型。所有条带均具有相同的矩形横截面和尺寸 6 毫米 $\times \,\,24$ mm $\times \,\,1000$ mm，所有表面均抛光。通过用发射365 nm的紫外灯在不同位置激发闪烁体条并读取硅光电二极管在条的一侧收集的光信号来测量光衰减长度。在被测塑料闪烁体中，EJ-200拥有最高的技术光衰减长度，适合构建全身J-PET扫描仪。