Area radiation monitoring on ISS Increments 17 to 22 using PADLES in the Japanese Experiment Module Kibo
Area radiation monitoring on ISS Increments 17 to 22 using PADLES in the Japanese Experiment Module Kibo
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DOI：
10.1016/j.radmeas.2013.05.008
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发表时间：
2013-12-01
影响因子：
2
通讯作者：
Tawara, H.
中科院分区：
文献类型：
--
作者：
Nagamatsu, A.;Murakami, K.;Tawara, H.
空间辐射环境参数的测量对于支持宇航员的辐射风险评估和为目前和今后的人类空间活动建立空间辐射模型基准至关重要。日本宇宙航空研究开发机构（JAXA）正在利用国际空间站（ISS）上日本实验舱Kibo内的“空间生命科学实验被动剂量计”（PADLES）系统进行连续区域辐射监测实验。PADLES剂量计由热释光剂量计（TLD）和CR-39塑料核径迹探测器（PNTD）组成。自2008年6月“希望”号舱连接到国际空间站以来，日本宇宙航空研究开发机构一直在进行“区域桨”实验，在“希望”号加压舱和实验后勤舱加压段的固定位置使用17个剂量计，这些剂量计分别每6个月或每增加一次更换一次。对于2008年6月至2010年4月国际空间站增量17至22期间的301天、180天和232天的三个监测期（称为区域桨实验系列#1至#3），Kibo PM中12个位置的剂量当量率为319 +/- 30 mu戈伊/天（618 +/- 102 mu Sv/天）、276 +/- 30 mu戈伊/天（608 +/- 94 mu Sv/天）和293 +/- 33 mu戈伊/天（588 +/- 84 mu Sv/天）。从2009年8月至2010年4月（232天），在ISS增量21至22期间，仅在Area PADLES实验系列#3中进行了ELM-PS中的辐射测量，5个位置的平均吸收剂量（剂量当量）率为297 +/- 28 mu戈伊/天（661 +/- 65 mu Sv/天）。辐射场的方向依赖性也进行了研究，通过安装PADLES剂量计位于ELM-PS的Kibo的天顶。(c)2013爱思唯尔有限公司保留所有权利。
The measurement of radiation environmental parameters in space is essential to support radiation risk assessments for astronauts and establish a benchmark for space radiation models for present and future human space activities. The Japan Aerospace Exploration Agency (JAXA) is performing a continuous area radiation monitoring experiment using the "PAssive Dosimeters for Lifescience Experiments in Space" (PADLES) system inside the Japanese Experiment Module Kibo on board the International Space Station (ISS). The PADLES dosimeter consists of thermoluminescent dosimeters (TLDs) and CR-39 plastic nuclear track detectors (PNTDs). JAXA has run the Area PADLES experiment since the Kibo module was attached to the ISS in June 2008, using 17 dosimeters in fixed locations on the Pressurized Module (PM) and the Experiment Logistics Module-Pressurized Section (ELM-PS) of Kibo, which are replaced every 6 months or every Increment, respectively. For three monitoring periods, known as Area PADLES experiment series #1 to #3, of 301, 180, and 232 days in June 2008 to April 2010 over ISS Increments 17 to 22, the average absorbed dose (dose equivalent) rates of 12 positions in the PM of Kibo were 319 +/- 30 mu Gy/day (618 +/- 102 mu Sv/day), 276 +/- 30 mu Gy/day (608 +/- 94 mu Sv/day), and 293 +/- 33 mu Gy/day (588 +/- 84 mu Sv/day), respectively. The radiation measurement in the ELM-PS was conducted in only Area PADLES experiment series #3 from August 2009 to April 2010 (232 days) over ISS Increments 21 to 22, the average absorbed dose (dose equivalent) rates of 5 positions was 297 +/- 28 mu Gy/day (661 +/- 65 mu Sv/day). The directional dependence of the radiation field was also investigated by installing PADLES dosimeters located in the zenith of ELM-PS of Kibo. (c) 2013 Elsevier Ltd. All rights reserved.