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Stopping cross sections of liquid water for MeV energy protons

✍ Scribed by M. Shimizu; M. Kaneda; T. Hayakawa; H. Tsuchida; A. Itoh

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 389 KB
Volume: 267
Category: Article
ISSN: 0168-583X
DOI: 10.1016/j.nimb.2009.05.036

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✦ Synopsis

Cross sections for the stopping of swift protons in liquid water have been measured for the first time by using a liquid water jet target of 50 lm in diameter. The energy loss spectra of incident 2.0 MeV protons were measured at scattering angles of 5.0-50 mrad. Experimental energy loss spectra have been successfully reproduced by Monte Carlo simulation calculations (GEANT4.9.1.p02 toolkit) by taking account of multiple scattering of projectile ions inside the liquid water target. The present stopping cross sections are found to be considerably smaller than other standard stopping power data, revealing e.g. about 11% deviation from those of SRIM2003.

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