- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 3 of 3 (0.07 seconds)Spelling suggestions: "subject:"geiger counter"" "subject:"reiger counter""
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An Investigation of the Effectiveness of Polymer Based Materials for Radiation Shielding of Flight VehiclesDriouche, Bouteina 11 August 2017 (has links)
The Earth’s upper atmosphere is suffused by radiation caused primarily by a bombardment of Cosmic Rays, as a result of which it is hazardous for human beings as well as sensitive electronic equipment on board flight vehicles. A series of ground based as well as airborne experiments were performed using Polylactic Acid (PLA), Acrylonitrile-Butadiene-Styrene (ABS) and High Impact Polystyrene (HIPS), in order to investigate the applicability of polymers that can meet today’s needs for lightweight, multifunctional, and cost efficiency in radiation shielding of electronic equipment. It was found that PLA at 8 mm thickness has an effectiveness of 66% against gamma radiation (i.e., it blocked 66% of the gamma radiation). Therefore, it was decided to proceed with a high altitude balloon experiment with an 8 mm thickness of PLA. The shield was demonstrated to be reasonably effective in attenuating radiation from cosmic rays.
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| 2 |
Zauberstab der AtomwissenschaftAbele, Johannes 17 April 2014 (has links) (PDF)
No description available.
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Zauberstab der Atomwissenschaft: Hans Geiger und die Magie der KerntechnikAbele, Johannes January 2001 (has links)
No description available.
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