The Effect of High-Z Materials on Proton-Induced Charge Collection

Author

Clemens, Michael Andrew ; Hooten, Nicholas C. ; Ramachandran, Vishwa ; Dodds, Nathaniel A. ; Weller, Robert A. ; Mendenhall, Marcus H. ; Reed, Robert A. ; Dodd, Paul E. ; Shaneyfelt, Marty R. ; Schwank, James R. ; Blackmore, Ewart W.

Author_Institution

Dept. of Phys. & Astron., Vanderbilt Univ., Nashville, TN, USA

Volume

57

Issue

6

fYear

2010

Firstpage

3212

Lastpage

3218

Abstract

Charge collection measurements reveal that the presence of high-Z materials increases proton-induced charge collection cross sections for high charge collection events. The mechanism for this effect is proton-induced fission events as shown through validated Monte Carlo simulations. These fission fragments are emitted isotropically in contrast to high-LET secondary particles from proton-silicon interactions which tend to be forward directed.

Keywords

Monte Carlo methods; fission; fission products; nuclear fragmentation; nuclei with mass number 20 to 38; proton-nucleus reactions; Monte Carlo simulation; Si(p,X); fission fragments; high Z material; proton induced charge collection; proton induced fission; proton-silicon interactions; Computer simulation; Monte Carlo methods; Proton radiation effects; Single event upset; Charge collection; GEANT; Monte Carlo simulation; computer simulation; energy deposition; nuclear reactions; proton radiation effects; single event mechanism;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2010.2079333

Filename

5658052