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Radiation shielding evaluation of spacecraft walls against heavy ions using microdosimetry

Abstract

Despite the low contribution of heavy ions to the total fluence in the space radiation environment, their radiobiological effect on the human body is extremely high. In this article, we investigated the radiation field which resulted from the interaction of galactic cosmic rays (GCRs), specifically some heavy ions and energies, typically encountered in space with a realistic multilayer sample of the International Space Station (ISS) Columbus module's shielding wall. The quality factor, Q, and the normalized dose equivalent, H, derived from microdosimetric measurements for C, Ne, and Si ions behind different spacecraft wall configurations and materials are presented in this article. Particularly, carbon fiber, polyoxymethylene, and perspex with same areal density compared to currently used aluminum were investigated.

Category

Academic article

Language

English

Author(s)

  • Stefania Peracchi
  • P James
  • Pagani Federico
  • Alexey Pan
  • J. Vohradsky
  • David Bolst
  • Dale A. Prokopovich
  • Susanna Guatelli
  • Marco Petasecca
  • Michael Lerch
  • Sang Yun Lee
  • T Inaniwa
  • Naruhiro Matsufuji
  • Marco Povoli
  • Angela Kok
  • Michael Jackson
  • Timothy Squire
  • Anatoly Rosenfeld
  • Linh Tran

Affiliation

  • University of Wollongong
  • Australian Nuclear Science and Technology Organisation
  • Japan
  • SINTEF Digital / Microsystems and Nanotechnology
  • University of New South Wales

Date

22.10.2020

Year

2020

Published in

IEEE Transactions on Nuclear Science

ISSN

0018-9499

Publisher

IEEE

Volume

68

Issue

5

Page(s)

897 - 905

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