Research on the perturbation phenomenon while tracing the radon concentration in real time

Research on the perturbation phenomenon while tracing the radon concentration in real time
复制标题

实时追踪氡浓度时的摄动现象研究

DOI:
10.1007/s00477-014-0900-9
复制
发表时间:
2015-03
影响因子:
4.2
通讯作者:
单健
单健
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
谭延亮;肖德涛;唐泉;单健

文献摘要

参考文献

被引文献

相似文献

一般来说,研究人员对时间平均氡浓度水平感兴趣。然而,当我们研究氡的迁移和吸附特性时,实时测量氡的浓度是很重要的。基于静电采集法的测氡仪不能跟踪氡浓度的快速变化。其主要原因是需要足够的衰变时间才能使测氡仪内部单元中的氡浓度与~(218)Po达到平衡。我们提出了一种新的算法来确定实际的氡浓度随时间的变化,该算法是由测氡仪提供的数据得出的。然而,当测量周期较短时,与此过程相关的是明显的“扰动”现象。在本文中,我们还将分析这种扰动现象的来源,并提供一个改进的过程模型,该模型基于一种更快的收敛方法,使这种扰动能够减少到可接受的限度。该模型可用于任何基于静电采集的测氡仪器,如Rad7,用于在短测量周期内示踪氡浓度。
Generally, researchers are interested in time averaged radon concentration levels. However when we study the migration and adsorption characteristics of radon, the measurement of radon concentration in real time is important. Radon monitors based on electrostatic collection method cannot follow the rapid changes in radon concentration. The main reason for this is that a sufficient decay time is needed in order for the radon concentration in the internal cell of radon monitor to come to equilibrium with the218Po. We propose a novel algorithm for determining the actual radon concentration versus time, derived from the data provided by the radon monitor. However there is a distinct ‘perturbation’ phenomenon associated with this procedure when the measurement cycle time is short. In this paper we will also analyze the source of this perturbation phenomenon and provide an improved process model, based upon a faster convergence method that enables reduction of this perturbation to acceptable limits. This model can be used to improve the measurements for any radon monitor like Rad7 based on electrostatic collection for tracing the radon concentration on short measurement cycles.
DOI: 10.1016/j.apradiso.2009.07.023
发表时间: 2009-11
期刊: Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
影响因子: --
作者:
P. Kolarž;D. Filipović;B. Marinković
通讯作者: P. Kolarž;D. Filipović;B. Marinković
DOI: 10.1063/1.1136214
发表时间: 1980-03
期刊: The Review of scientific instruments
影响因子: --
作者:
S. Schery;D. Gaeddert;M. Wilkening
通讯作者: S. Schery;D. Gaeddert;M. Wilkening
DOI: 10.1007/s00477-007-0148-8
发表时间: 2007-05
影响因子: 4.2
作者:
M. Tiefelsdorf
通讯作者: M. Tiefelsdorf
DOI: 10.1007/s00477-010-0367-2
发表时间: 2010-02
影响因子: 4.2
作者:
J. Shen;M. Biglari;Changbo Jiang;Honghai Wu
通讯作者: J. Shen;M. Biglari;Changbo Jiang;Honghai Wu
DOI: 10.1063/1.3572271
发表时间: 2011-04
期刊: The Review of scientific instruments
影响因子: --
作者:
Y. Tan;D. Xiao
通讯作者: Y. Tan;D. Xiao