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.	ACS Undergrad Summer Schools 10 June- 20 July 2012
.	Nuclear Regulatory Commission Meeting Webcasts February 2012 Bethesda, Maryland

09 February 2012

Recent Results of Passive Dosimetry Measurements on the International Space Station

E. Semones¹; M. Weyland²; T. Shelfer¹; A. Johnson¹; and E. Zapp¹ (¹Lockheed Martin; ²NASA)

The radiation exposure on board the International Space Station (ISS) has been measured since May 1999 with thermoluminescent dosimeters (TLDs), utilizing TLD-100, TLD-300, TLD-600, and TLD-700. Measurements are currently made at three locations in the US built Node, six locations in the Russian built Service Module, five locations in the US built laboratory, and two locations in the US Airlock. The ISS area measurements overlap with identical ISS crew personal dosimeter measurements and provide supplemental information for determination of crew effective dose. The measurements show absorbed dose rates ranging from 0.11 mGyd-1 to 0.35 mGyd-1. Future measurements will include a stack of plastic nuclear track detectors to determine the absorbed dose distribution as a function of linear energy transfer, which will allow for the measurement of dose equivalent to a point in adjacent tissue.

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