Calibration of ionization chamber for 18F and 68Ga

被引：4
|
作者：
da Silva, Carlos J. [1 ]
de Oliveira, Estela M. [1 ]
Iwahara, A. [1 ]
Delgado, Jose U. [1 ]
Poledna, R. [1 ]
de Oliveira, Antonio E. [1 ]
Moreira, Denise S. [1 ]
da Silva, Ronaldo L. [1 ]
Gomes, Regio dos Santos [1 ]
de Veras, Eduardo V. [1 ]
机构：
[1] Comissao Nacl Energia Nucl, Inst Radioprotecao & Dosimetria, Lab Nacl Metrol Radiacoes Ionizantes, BR-22783127 Rio De Janeiro, Brazil
来源：
APPLIED RADIATION AND ISOTOPES | 2014年 / 87卷
关键词：
Standardization; Anti-coincidence counting; Extending dead time; EXTENDING DEAD-TIME; STANDARDIZATION;
D O I：
10.1016/j.apradiso.2013.11.137
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
In order to maintain the results of primary activity standardizations carried out in 2011 the LNMRI has determined the calibration factors for a pressurized 4 pi-ionization chamber for the nuclides F-18 and Ga-68. This ionization chamber is coupled to a 6517A Keithley electrometer which is controlled by a homemade LabVIEW program. This paper will describe the main issues related to the calibration of an ionization chamber system for positron emitters and short half-life radionuclides such as timing, current measurement, background, decay, and Ra-226 check source measurements. (c) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：188 / 191
页数：4
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