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Science and Technology of Nuclear Installations
Volume 2014, Article ID 828921, 5 pages
Research Article

The Application of Microdosimetric Principles to Radiation Hardness Testing

Department of Nuclear Engineering, Texas A&M University, MS 3133, College Station, TX 77840, USA

Received 10 October 2013; Accepted 22 November 2013; Published 12 January 2014

Academic Editor: Jakrapong Kaewkhao

Copyright © 2014 Jeremy D. Northum and Stephen B. Guetersloh. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Chord length distributions for rectangular parallelepipeds of various relative dimensions were studied in relation to radiation hardness testing. For each geometry, a differential chord length distribution was generated using a Monte Carlo method to simulate exposure to an isotropic radiation source. The frequency and dose distributions of chord length crossings for each geometry, as well as the means of these distributions, are presented. In every case, the dose mean chord length was greater than the frequency mean chord length with a 34.5% increase found for the least extreme case of a cube. This large increase of the dose mean chord length relative to the frequency mean chord length demonstrates the need to consider rare, long-chord-length crossings in radiation hardness testing of electronic components.