Backscattered radiation into a transmission ionization chamber: Measurement and Monte Carlo simulation

被引：1

作者：

Yoshizumi, Maira T. ^{[1
]}

Yoriyaz, Helio ^{[1
]}

Caldas, Linda V. E. ^{[1
]}

机构：

[1] CNEN, IPEN, BR-05508000 Sao Paulo, Brazil

来源：

APPLIED RADIATION AND ISOTOPES | 2010年 / 68卷 / 4-5期

基金：

巴西圣保罗研究基金会;

关键词：

Transmission ionization chamber; X-radiation; Backscattered radiation; Monte Carlo simulation; BEAM MONITOR CHAMBER; SCATTERED RADIATION; COLLIMATORS;

D O I：

10.1016/j.apradiso.2009.10.015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Backscattered radiation (BSR) from field-defining collimators can affect the response of a monitor chamber in X-radiation fields. This contribution must be considered since this kind of chamber is used to monitor the equipment response. In this work, the dependence of a transmission ionization chamber response on the aperture diameter of the collimators was studied experimentally and using a Monte Carlo (MC) technique. According to the results, the BSR increases the chamber response of over 4.0% in the case of a totally closed collimator and 50 kV energy beam, using both techniques. The results from Monte Carlo simulation confirm the validity of the simulated geometry. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：586 / 588

页数：3

共 11 条

[1]

[Anonymous], 2000, MCNP GEN MONTE CARLO, DOI DOI 10.1016/J.CCLET.2011.04.015

[2] THE VALIDITY OF MONTE-CARLO SIMULATION IN STUDIES OF SCATTERED RADIATION IN DIAGNOSTIC-RADIOLOGY [J].