μDose：环境放射性和剂量率测量的紧凑系统
μDose: a compact system for environmental radioactivity and dose rate measurement
摘要：
$μ$ Dose是一种新型紧凑型分析仪器，用于评估低水平$^{238}$ U、$^{235}$ U、$^{232}$ Th衰变链和$^{40}$ K放射性。该系统配备了双$α$ / $β$闪烁体，可区分$α$和$β$颗粒。独特的内置脉冲分析仪可测量每个脉冲的幅度、形状和后续脉冲之间的时间间隔。这允许检测由$^{214}$ Bi/ $^{214}$ Po、$^{220}$ Rn/ $^{216}$ Po、$^{212}$ Bi/ $^{212}$ Po和$^{219}$ Rn/ $^{215}$ Po的随后衰变产生的脉冲对。获得的$α$和$β$计数以及四个单独的衰变对计数用于通过使用放射性标准品评估测量样品中的$^{238}$ U、$^{235}$ U、$^{232}$ Th和$^{40}$ K比放射性。$μ$剂量系统可配备各种光电倍增管和计数容器，以评估质量范围在0.4 g和4 g之间的样品的放射性核素浓度。因此，用户可以根据自己的需要定制系统，并最大限度地提高仪器\textquotesingle的性能。该系统由专用软件控制，该软件具有图形用户界面和用于系统校准、数据可视化、比放射性计算和使用无限矩阵假设确定剂量率的模块。
英文摘要：
$μ$Dose is a novel compact analytical instrument for assessing low level $^{238}$U, $^{235}$U, $^{232}$Th decay chains and $^{40}$K radioactivity. The system is equipped with a dual $α$/$β$ scintillator allowing to discriminate between $α$ and $β$ particles. The unique build-in pulse analyzer measures the amplitude of each individual pulse, its shape and the time interval between subsequent pulses. This allows the detection of pulse pairs arising from subsequent decays of $^{214}$Bi/$^{214}$Po, $^{220}$Rn/$^{216}$Po, $^{212}$Bi/$^{212}$Po and $^{219}$Rn/$^{215}$Po. The obtained $α$ and $β$ counts and four separate decay pair counts are used to asses the $^{238}$U, $^{235}$U, $^{232}$Th and $^{40}$K specific radioactivities in the measured samples through the use of radioactivity standards. The $μ$Dose system may be equipped with various photomultipliers and counting containers to assess radionuclide concentrations of samples of masses ranging between 0.4~g and 4~g. As a result, the user can customize the system to their needs and maximize the instrument\textquotesingle s performance. The system is controlled by a dedicated software with a graphical user interface and modules for system calibration, data visualization, specific radioactivity calculations and dose rate determination using the infinite matrix assumption.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
