publication . Other literature type . Article . 2017

Measuring Space Radiation Shielding Effectiveness

Amir A. Bahadori; Edward Semones; Michael K. Ewert; James L. Broyan; Steven A. Walker;
Open Access
  • Published: 01 Jan 2017
  • Publisher: Unpublished
Abstract
Passive radiation shielding is one strategy to mitigate the problem of space radiation exposure. While space vehicles are constructed largely of aluminum, polyethylene has been demonstrated to have superior shielding characteristics for both galactic cosmic rays and solar particle events due to the high hydrogen content. A method to calculate the shielding effectiveness of a material relative to reference material from Bragg peak measurements performed using energetic heavy charged particles is described. Using accelerated alpha particles at the National Aeronautics and Space Administration Space Radiation Laboratory at Brookhaven National Laboratory, the method...
Subjects
free text keywords: lcsh:Physics, lcsh:QC1-999, Polyethylene, chemistry.chemical_compound, chemistry, Cosmic ray, Nuclear engineering, Alpha particle, Charged particle, Mechanical engineering, Radiation, Bragg peak, Materials science, Particle, Electromagnetic shielding
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