scholarly journals Measurement of Gamma-Ray Pulse Height Spectrum Under p-Li Neutron Beam Using NaI(Tl) Scintillator With Pulse-Shape-Discrimination Technique

2012 ◽  
Vol 3 ◽  
pp. 112-115
Author(s):  
So KAMADA ◽  
Masashi TAKADA
Radiocarbon ◽  
1992 ◽  
Vol 34 (3) ◽  
pp. 414-419 ◽  
Author(s):  
Osmo Äikää ◽  
Pertti Mäntynen ◽  
Tuovi Kankainen

The new 14C dating system of the Geological Survey of Finland consists of three CO2 proportional counters of conventional size, a liquid scintillation anticoincidence guard, and a passive shield of about 90-year-old iron. The counting room is an air-conditioned Faraday cage constructed of concrete with aggregate of crystalline Precambrian limestone. We apply pulse-shape discrimination that greatly improves the precision of our 14C analyses - the reduction of background is over 70%, while the modern count rate is reduced only by 15 to 20%. The purity of the counting gas is monitored by recording the cosmic muon pulse-height spectrum. At present, the dating limit for a two-day measurement is 57 ka. We summarize here the most significant results and aspects of pulse-shape discrimination


1994 ◽  
Vol 144 ◽  
pp. 635-639
Author(s):  
J. Baláž ◽  
A. V. Dmitriev ◽  
M. A. Kovalevskaya ◽  
K. Kudela ◽  
S. N. Kuznetsov ◽  
...  

AbstractThe experiment SONG (SOlar Neutron and Gamma rays) for the low altitude satellite CORONAS-I is described. The instrument is capable to provide gamma-ray line and continuum detection in the energy range 0.1 – 100 MeV as well as detection of neutrons with energies above 30 MeV. As a by-product, the electrons in the range 11 – 108 MeV will be measured too. The pulse shape discrimination technique (PSD) is used.


2018 ◽  
Vol 145 ◽  
pp. 193-201 ◽  
Author(s):  
Zhang-jian Qin ◽  
Chuan Chen ◽  
Jun-song Luo ◽  
Xing-hong Xie ◽  
Liang-quan Ge ◽  
...  

Author(s):  
Allison Lim ◽  
Jonathan Arrue ◽  
Paul B. Rose ◽  
Alan Sellinger ◽  
Anna Erickson

2013 ◽  
Vol 77 (7) ◽  
pp. 834-838 ◽  
Author(s):  
S. V. Zuyev ◽  
E. S. Konobeevski ◽  
M. V. Mordovskoy ◽  
S. I. Potashev ◽  
I. M. Sharapov

Author(s):  
Chuân Văn Phan ◽  
Hải Xuân Nguyễn ◽  
Anh Ngọc Nguyễn ◽  
Hải Xuân Phạm ◽  
Phong Xuân Mai ◽  
...  

The scintilator detectors are sensitive to both neutron and gamma radiation. Therefore, right identification of the pulses which generated by neutrons or gamma ray from these detectors plays an important role in neutron measurement by using scintilator detector. In order to improve the ability to pulse shape discrimination (PSD), many PSD techniques have been studied, developed and applied. In this work, we use a basic configuration of a Fully connected Neural network (Fc- Net) where the number of elements of the network is minimum, and each element corresponds to identified specification of neutron or gamma pulses measured by using EJ-301 scintilator detector. The minimum of error principle has been applied for neuron network design; therefore, the accuracy of recognitions did not affect by this reduced network. The obtained results show that the identify accuracy of FcNet is higher than those of digital charge integration (DCI) method. Being tested using 60Co radioactive source, it is shown that, with the application of the FcNet, the accuracy of the gamma pulses discrimination acquires 98.60% in the energy region from 50 to 2000 keV electron equivalent energy (keVee), and 95.59% in the energy region from 50 to 150 keVee. In general, the obtained results indicate that the artificial neural network method can be applied to build neutron/gamma spectrometers with limited hardware.


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