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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms >Sensitivity of LR 115 detectors in hemispherical chambers for radon measurements
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Sensitivity of LR 115 detectors in hemispherical chambers for radon measurements

机译：半球形腔室中LR 115探测器对ra测量的灵敏度

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摘要

We have determined the detection sensitivity of the LR 115 detector placed on the bottom of hemispherical diffusion chambers through Monte Carlo simulations. For the cases where the LR 115 detectors completely cover the bottom of hemispherical diffusion chambers, we propose the optimum radius of the hemispherical chamber as 3 cm. In hemispherical chambers with radii smaller than 3 cm, the total sensitivity is smaller which will lower the number of tracks and increase the statistical uncertainty. On the other hand, if the radius is larger than 3 cm, the effects of the deposition fraction of radon progeny will come into effect, which will again introduce uncertainties in radon measurements. For the hemispherical chamber with a radius of 3 cm, we further propose the detector radius to be 1.3 cm. This combination will eliminate the influence of the deposition fraction on the total sensitivity and at the same time give a large total sensitivity. For a detector with this radius, the hemispherical chamber with a radius of 3 cm is the largest one which provides the total sensitivity independent of the deposition fraction of radon progeny.
机译：我们已经通过蒙特卡洛模拟确定了放置在半球形扩散室底部的LR 115检测器的检测灵敏度。对于LR 115探测器完全覆盖半球形扩散室底部的情况，我们建议半球形扩散室的最佳半径为3 cm。在半径小于3 cm的半球室中，总灵敏度较小，这将减少轨道数并增加统计不确定性。另一方面，如果半径大于3cm，则pro子体的沉积分数的影响将生效，这将再次在introduce测量中引入不确定性。对于半径为3 cm的半球形腔室，我们进一步建议探测器半径为1.3 cm。这种组合将消除沉积分数对总灵敏度的影响，同时提供较大的总灵敏度。对于具有此半径的检测器，半径为3 cm的半球形腔是最大的腔，其提供的总灵敏度与ra子的沉积分数无关。

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