SPADA: A project to study the effectiveness of shielding materials in space

Pugliese, M. and Casolino, M. and Cerciello, V. and Durante, M. and Grossi, G. and Gialanella, G. and Manti, L. and Morgia, A. and Roca, V. and Scampoli, P. and Zaconte, V. (2008) SPADA: A project to study the effectiveness of shielding materials in space. Il nuovo cimento C, 31 (1). pp. 91-97. ISSN 1826-9885

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The SPADA (SPAce Dosimetry for Astronauts) project is a part of an extensive teamwork that aims to optimize shielding solutions against space radiation. Shielding is indeed an irreplaceable tool to reduce exposure of crews of future Moon and Mars missions. We concentrated our studies on two flexible materials, Kevlar R� and Nextel R,� because of their ability to protect human space infrastructures from micrometeoroids. We measured radiation hardness of these shielding materials and compared to polyethylene, generally acknowledged as the most effective space radiation shield with practical applications in spacecraft. Both flight test (on the International Space Station and on the Russian FOTON M3 rocket), with passive dosimeters and accelerator-based experiments have been performed. Accelerator tests using high-energy Fe ions have demonstrated that Kevlar is almost as effective as polyethylene in shielding heavy ions, while Nextel is a poor shield against high-charge and -energy particles. Preliminary results from spaceflight, however, show that for the radiation environment in low-Earth orbit, dominated by trapped protons, thin shields of Kevlar and Nextel provide limited reduction.

Item Type: Article
Uncontrolled Keywords: Thermoluminescence ; Dosimetry/exposure assessment
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 23 Mar 2020 14:50
Last Modified: 23 Mar 2020 14:50

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