A deterministic computational procedure for space environment electron transport

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:268

Article

Nealy, John E.²  Chang, C. K.³  Norman, Ryan B.¹  Blattnig, Steve R.¹  Badavi, Francis F.³  Adamczyk, Anne M.⁴ 

[1] NASA, Langley Res Ctr, Hampton, VA 23681 USA

[2] Old Dominion Res Fdn, Norfolk, VA 23508 USA

[3] Christopher Newport Univ, Newport News, VA 23606 USA

[4] Univ Tennessee, Knoxville, TN 37996 USA

关键词: Space radiation;    Planetary environments;    Electrons;    Absorbed dose;    LEO;   

DOI  :  10.1016/j.nimb.2010.04.014

来源: Elsevier

【 摘 要 】

A deterministic computational procedure for describing the transport of electrons in condensed media is formulated to simulate the effects and exposures from spectral distributions typical of electrons trapped in planetary magnetic fields. The primary purpose for developing the procedure is to provide a means of rapidly performing numerous repetitive transport calculations essential for electron radiation exposure assessments for complex space structures. The present code utilizes well-established theoretical representations to describe the relevant interactions and transport processes. A combined mean free path and average trajectory approach is used in the transport formalism. For typical space environment spectra, several favorable comparisons with Monte Carlo calculations are made which have indicated that accuracy is not compromised at the expense of the computational speed. (C) 2010 Elsevier B.V. All rights reserved.

【 授权许可】

Free