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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >A low-noise current-sensitive amplifier-discriminator system for beta particle counting
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A low-noise current-sensitive amplifier-discriminator system for beta particle counting

机译:用于β粒子计数的低噪声电流敏感放大器-鉴别器系统

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摘要

NPL has developed a low-noise current amplifier/discriminator system for radionuclides that emit low-energy electrons and X-rays. The new beta amplifier is based on the low-noise Amptek A-250 operational amplifier. The design has been configured for optimum signal to noise ratio. The new amplifier is described and results obtained using primarily electron-capture decaying radionuclides are presented. The new amplifier gives rise to higher particle detection efficiency than the previously used Atomic Energy of Canada Limited-designed amplifier. This is shown by measurements is of Mn-54 and Zn-65. The counting plateaux are significantly longer and have reduced gradients. Crown Copyright (c) 2008 Published by Elsevier Ltd. All rights reserved.
机译:NPL为发射低能电子和X射线的放射性核素开发了一种低噪声电流放大器/鉴别器系统。新型Beta放大器基于低噪声Amptek A-250运算放大器。该设计已配置为最佳信噪比。描述了新的放大器,并介绍了主要使用电子捕获衰减放射性核素获得的结果。与以前使用的加拿大原子能有限公司限量设计的放大器相比,新的放大器产生更高的粒子检测效率。 Mn-54和Zn-65的测量结果表明。计数平台明显更长,并且梯度减小。 Crown版权所有(c)2008,由Elsevier Ltd.发行。保留所有权利。

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