Efficiency calibration of scintillation detectors in the neutron energy range 1.5–25 MeV by the associated particle technique

Fowler, J.L.; Cookson, J.A.; Hussain, M.; Schwartz, R. B.; Swinhoe, Martyn T; Wise, C.; Uttley, C.A.

doi:10.1016/0029-554x(80)90759-4

Cited by 48 publications

(13 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The neutron flux was monitored by a φ30.0 mm × 30.0 mm stilbene scintillator in another collimator situated at an angle of about 60 • . For the neutron energy range from 1 to 5 MeV, the T(p,n) 3 He reaction was used to produce monoenergetic neutrons by changing the detection angles, for 6 to 20 MeV the same reaction was used at 0 • by changing the incident proton energies, and for 21 to 30 MeV the T(d,n) 3 He reaction was chosen at 0 • by changing the incident deuteron energies. The gas target was a gas cell with the size of φ10.0 mm × 30.0 mm, filled with tritium gas to a pressure of 101.325 kPa.…”

Section: Methodsmentioning

confidence: 99%

“…In the energy region above 20 MeV, contributions from the n-C reactions in the liquid scintillator become more and more important, while the reaction cross sections and the angular distributions are not precise enough. A little efficiency calibration work above the 20 MeV region has been reported [1][2][3][4][5] . However, their results can not be used directly since the size of the detector and the detection threshold are different, even the composition of the scintillator is slightly different.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Measurement of the response function and the detection efficiency of an organic liquid scintillator for neutrons between 1 and 30 MeV

Huang¹,

Ruan²,

Chen³

et al. 2009

Chinese Phys. C

View full text Add to dashboard Cite

The light output function of a φ50.8 mm × 50.8 mm BC501A scintillation detector was measured in the neutron energy region of 1 to 30 MeV by fitting the pulse height (PH) spectra for neutrons with the simulations from the NRESP code at the edge range. Using the new light output function, the neutron detection efficiency was determined with two Monte–Carlo codes, NEFF and SCINFUL. The calculated efficiency was corrected by comparing the simulated PH spectra with the measured ones. The determined efficiency was verified at the near threshold region and normalized with a Proton-Recoil-Telescope (PRT) at the 8–14 MeV energy region.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measurement of the response function and the detection efficiency of an organic liquid scintillator for neutrons between 1 and 30 MeV

Huang¹,

Ruan²,

Chen³

et al. 2009

Chinese Phys. C

View full text Add to dashboard Cite

show abstract

“…[6] and Fowler et.al. [7] had determined the location of the Compton edge Ec as the point located at half height of the Compton peak E c.p in distribution. That is Ec is higher in energy than Ec.p.…”

Section: -1 Determination Of the Compton Edgementioning

confidence: 99%

Use of the Ne-213 Organic Scintillator for the Reducti on of Compton Distribution from Gamma-Ray Spectra

A.Elawi¹,

Yaqoub²,

Khidhr³

2020

Tikrit J. Pure Sci.

View full text Add to dashboard Cite

A method of reducing the Compton distribution from gamma-ray spectra recorded by Nal(Tl) detector using the NE-213 organic scintillator is presented. The similarity of the Compton distributions between both detectors may allow subtracting the NE-213 spectrum from the Nal(Tl) spectrum after making certain calibrations in energy, resolution and count rate at the Compton peak. The method is applied by using the ¹³⁷Cs and ⁶⁰Co gamma-ray standard sources. The "photopeak" spectra obtained showed that the Compton distribution may be highly reduced and the photopeaks are very well isolated

show abstract

“…Since in reality, pulse height spectra are measured with an acquisition threshold, as shown in figure 17, the lower limit of the integration must be accurately determined. This is typically done by calibrating the detector light output against the energy deposited by recoil electron using standard γ-rays calibration sources (such as 22 Na, 137 Cs and 207 Bi) and then converting the experimental light output threshold into a deposited energy threshold using the corresponding light output function [18,19]. The light output so calibrated is given in units of MeV electron-equivalent (MeVee) as shown in figure 17.…”

Section: Detector Efficiencymentioning

confidence: 99%

Liquid Scintillators Neutron Response Function: A Tutorial

Cecconello

2019

J Fusion Energ

View full text Add to dashboard Cite

This tutorial is devoted to the understanding of the different components that are present in the neutron light output pulse height distribution of liquid scintillators in fusion relevant energy ranges. The basic mechanisms for the generation of the scintillation light are briefly discussed. The different elastic collision processed between the incident neutrons and the hydrogen and carbon atoms are described in terms of probability density functions and the overall response function as their convolution. The results from this analytical approach is then compared with those obtained from simplified and full Monte Carlo simulations. Edge effect, finite energy resolution, light output and transport and competing physical processes between neutron and carbon and hydrogen atoms and their impact on the response functions are discussed. Although the analytical treatment here presented allows only for a qualitative comparison with full Monte Carlo simulations it enables an understanding of the main features present in the response function and therefore provides the ground for the interpretation of more complex response functions such those measured in fusion plasmas. Although the main part of this tutorial is focussed on the response function to mono-energetic 2.45 MeV neutrons a brief discussion is presented in case of broad neutron energy spectra and how these can be used to infer the underlying properties of fusion plasmas via the application of a forward modelling method.

show abstract

Efficiency calibration of scintillation detectors in the neutron energy range 1.5–25 MeV by the associated particle technique

Cited by 48 publications

References 14 publications

Measurement of the response function and the detection efficiency of an organic liquid scintillator for neutrons between 1 and 30 MeV

Measurement of the response function and the detection efficiency of an organic liquid scintillator for neutrons between 1 and 30 MeV

Use of the Ne-213 Organic Scintillator for the Reducti on of Compton Distribution from Gamma-Ray Spectra

Liquid Scintillators Neutron Response Function: A Tutorial

Contact Info

Product

Resources

About