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Radiance and particle fluence

Abstract

The International Commission on Radiological Units and Measurements (ICRU) has defined fluence in terms of the number of the radiation particles crossing a small sampling sphere. A second definition has been proposed in which the length of track segments contained within any sampling volume are used to calculate the incident fluence. This approach is often used in Monte Carlo simulations of individual particle tracks, allowing the fluence to be scored in small volumes of any shape. In this paper we stress that the second definition generalizes the classical (ICRU) concept of fluence. We also identify the assumptions inherent in the two definitions of fluence and prove their equivalence for the case of straight-line particle trajectories. (author).
Authors:
Papiez, L; [1]  Battista, J J [2] 
  1. Indiana Univ. Hospital, Indianapolis, IN (United States). Dept. of Radiation Oncology
  2. London Regional Cancer Centre, ON, (Canada). Dept. of Physics
Publication Date:
Jun 01, 1994
Product Type:
Journal Article
Reference Number:
AIX-26-003655; EDB-95-005561
Resource Relation:
Journal Name: Physics in Medicine and Biology; (United Kingdom); Journal Volume: 39:6
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; RADIATION DOSE UNITS; ICRU; MONTE CARLO METHOD; PARTICLE TRACKS; RADIATION FLUX; CALCULATION METHODS; INTERNATIONAL ORGANIZATIONS; UNITS; 663620* - Physics of Radiations Other Than Neutrons- (1992-)
OSTI ID:
7057309
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0031-9155; CODEN: PHMBA7
Submitting Site:
GBN
Size:
Pages: 1053-1062
Announcement Date:
Jan 01, 1995

Citation Formats

Papiez, L, and Battista, J J. Radiance and particle fluence. United Kingdom: N. p., 1994. Web. doi:10.1088/0031-9155/39/6/011.
Papiez, L, & Battista, J J. Radiance and particle fluence. United Kingdom. https://doi.org/10.1088/0031-9155/39/6/011
Papiez, L, and Battista, J J. 1994. "Radiance and particle fluence." United Kingdom. https://doi.org/10.1088/0031-9155/39/6/011.
@misc{etde_7057309,
title = {Radiance and particle fluence}
author = {Papiez, L, and Battista, J J}
abstractNote = {The International Commission on Radiological Units and Measurements (ICRU) has defined fluence in terms of the number of the radiation particles crossing a small sampling sphere. A second definition has been proposed in which the length of track segments contained within any sampling volume are used to calculate the incident fluence. This approach is often used in Monte Carlo simulations of individual particle tracks, allowing the fluence to be scored in small volumes of any shape. In this paper we stress that the second definition generalizes the classical (ICRU) concept of fluence. We also identify the assumptions inherent in the two definitions of fluence and prove their equivalence for the case of straight-line particle trajectories. (author).}
doi = {10.1088/0031-9155/39/6/011}
journal = []
volume = {39:6}
journal type = {AC}
place = {United Kingdom}
year = {1994}
month = {Jun}
}