Effects of material and/or structure on shielding of electronic devices

Author

Mangeret, R. ; Carrière, T. ; Beaucour, J. ; Jordan, T.M.

Author_Institution

Matra Marconi Space, Velizy Villacoublay, France

Volume

43

Issue

6

fYear

1996

fDate

12/1/1996 12:00:00 AM

Firstpage

2665

Lastpage

2670

Abstract

In this paper, we have pioneered a new direction concerning the shielding of electronic devices (at a microcircuit-packaging or a larger level) in a radiative environment. As a matter of fact, this work not only considers the role of the material itself on the shielding efficiency but also the effect of the structure of the shield. By simulations with the NOVICE Code, we have explored the possibility of combining the specific attenuation properties of given materials in an optimized multilayer (and multimaterial) structure. This study is based on a brief theoretical overview of interaction of space radiation with material. Then, the results of simulations are presented. The workframe of these calculations is a worst-case geosynchronous orbit (160° West) for a period of 15 years (trapped electrons and protons from 4 anomalously large solar particle events). We found that it is possible to improve the shielding properties of a monomaterial absorber by using an optimized multilayer, multimaterial shield

Keywords

electron beam effects; integrated circuit packaging; proton effects; radiation protection; shielding; NOVICE code simulation; attenuation; electronic device; geosynchronous orbit; microcircuit packaging; multilayer multimaterial structure; shielding; solar particle events; space radiation; trapped electrons; trapped protons; Atomic measurements; Attenuation; Circuit simulation; Electron traps; Energy loss; Equations; Nonhomogeneous media; Orbital calculations; Protons; Silicon;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.556851

Filename

556851