A comparison of digital zero-crossing and charge-comparison methods for neutron/γ-ray discrimination with liquid scintillation detectors
Nakhostin, Mohammad (2015) A comparison of digital zero-crossing and charge-comparison methods for neutron/γ-ray discrimination with liquid scintillation detectors Nuclear Instruments and Methods in Physics Research A, 797. pp. 77-82.
![]() |
Text
1-s2.0-S0168900215007913-main.pdf - Version of Record Restricted to Repository staff only Download (2MB) |
Abstract
In this paper,we have compared the performances of the digital zero-crossing and charge-comparison methods forn/γ discrimination with liquid scintillation detectors at low light outputs. The measurements were performed with a 2″ x 2″ cylindrical liquid scintillation detector of type BC501A whose outputs were sampled by means of a fast wave form digitizer with 10-bit resolution,4G S/s sampling rate and one volt input range. Different light output ranges were measured by operating the photomultiplier tube at different voltages and a new recursive algorithm was developed to implement the digital zero- crossing method.The results of our study demonstrate the superior performance of the digital zero- crossing method at low light outputs when a large dynamic range is measured.However,when the input range of the digitizer is used to measure a narrow range of light outputs, the charge-comparison method slightly outperforms the zero-crossing method. The results are discussed in regard to the effects of the quantization noise and the noise filtration performance of the zero-crossing filter. slightly outperforms the zero-crossing method. The results are discussed in regard to the effects of the quantization noise and the noise filtration performance of the zero-crossing filter.
Item Type: | Article | ||||||
---|---|---|---|---|---|---|---|
Divisions : | Faculty of Engineering and Physical Sciences > Physics | ||||||
Authors : |
|
||||||
Date : | 2 July 2015 | ||||||
DOI : | 10.1016/j.nima.2015.06.041 | ||||||
Copyright Disclaimer : | © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | ||||||
Uncontrolled Keywords : | Pulse-shape discrimination; Liquid scintillation detectors; Zero-crossing method | ||||||
Depositing User : | Melanie Hughes | ||||||
Date Deposited : | 08 Sep 2017 09:24 | ||||||
Last Modified : | 16 Jan 2019 18:56 | ||||||
URI: | http://epubs.surrey.ac.uk/id/eprint/842215 |
Actions (login required)
![]() |
View Item |
Downloads
Downloads per month over past year