标题： 掺铋锗酸盐闪烁光产额的非比例性 显示英文标题

标题： Nonproportionality in the scintillation light yield of bismuth germanate

摘要： 我们提供了对掺铋锗酸盐（BGO）在6 keV至662 keV能量范围内的闪烁光产率非比例性的测量结果。 闪烁光通过雪崩光电二极管（APDs）读出，BGO晶体和APDs均在约90 K的温度下运行。数据是通过放射性同位素源照射一个小测试真空容器中的单个BGO晶体以及一个中子辐射β衰变实验中的12元件探测器获得的。 此外，在4.6 T磁场中获得了一个数据点，该数据基于此装置中连续背景伽马射线产生的铋K X射线逃逸峰。 这些测量结果与之前的结果进行比较，是为了开展一项研究自由中子辐射衰变模式的实验。 在不同条件下获得的数据结合在一起，为BGO的非比例性提供了一个相对一致的图像，这对在低能伽马射线应用BGO探测器的研究人员应该会有所帮助。 显示英文摘要

摘要： We present measurements of nonproportionality in the scintillation light yield of bismuth germanate (BGO) for gamma-rays with energies between 6 keV and 662 keV. The scintillation light was read out by avalanche photodiodes (APDs) with both the BGO crystals and APDs operated at a temperature of approximately 90 K. Data were obtained using radioisotope sources to illuminate both a single BGO crystal in a small test cryostat and a 12-element detector in a neutron radiative beta-decay experiment. In addition one datum was obtained in a 4.6 T magnetic field based on the bismuth K x-ray escape peak produced by a continuum of background gamma rays in this apparatus. These measurements and comparison to prior results were motivated by an experiment to study the radiative decay mode of the free neutron. The combination of data taken under different conditions yields a reasonably consistent picture for BGO nonproportionality that should be useful for researchers employing BGO detectors at low gamma ray energies.