Transport of electrons and associated bremsstralung through a composite aluminum-lead shield, with applications to spacecraft shielding

Technical Report · Tue Jul 01 00:00:00 EDT 1986

OSTI ID:6938720

Barnea, G; Seltzer, S M; Berger, M J

Monte Carlo calculations have been made of the stopping of electrons and the penetration of secondary bremsstrahlung through layered aluminum-lead spacecraft walls. The results are presented in terms of the resultant radiation dose to objects inside. Dose values for monoenergetic incident electrons are given as a function of the aluminum/lead thickness ratio. These data, integrated over a few typical earth-orbit electron spectra, demonstrate the substantial reduction in radiation dose that can be achieved by replacing a portion of an aluminum shield with an inner layer of lead. The main results were obtained by applying a complex-geometry code to spherical-shell configurations. It was found that these results could be reasonably well approximated by an alternative and more economical approach, involving the use of slab-geometry transport results.

• Research Organization: National Bureau of Standards, Washington, DC (USA). Center for Radiation Research
• OSTI ID: 6938720
• Report Number(s): PB-87-103305/XAB; NBSIR-86/3429
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM
SHIELDS
BREMSSTRAHLUNG
SHIELDING MATERIALS
ELECTRONS
LEAD
RADIATION TRANSPORT
SPACE VEHICLES
MONTE CARLO METHOD
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
LEPTONS
MATERIALS
METALS
RADIATIONS
VEHICLES
654001* - Radiation & Shielding Physics- Radiation Physics
Shielding Calculations & Experiments