scholarly journals Estimation of Radionuclide Concentration in Plume Using Pulse Height Distribution Measured by LaBr3 Scintillation Detector and Its Response to Radionuclides in Plume Calculated with egs5

2021 ◽  
pp. 233-243
Author(s):  
Hideo HIRAYAMA ◽  
Hiroshi MATSUMURA ◽  
Yoshihito NAMITO ◽  
Toshiya SANAMI
Keyword(s):  
Scintillation Detector ◽  
Pulse Height ◽  
Height Distribution ◽  
Radionuclide Concentration ◽  
Pulse Height Distribution

Evaluation of the Energy Dispersive Detector as a Detector-Filter System for the X-Ray Diffractometer

1972 ◽  
Vol 16 ◽  
pp. 322-335 ◽  
Author(s):  
Davis Carpenter ◽  
John Thatcher
Keyword(s):  
Scintillation Detector ◽  
Pulse Height ◽  
Good Deal ◽  
Energy Dispersive ◽  
Maximum Efficiency ◽  
Height Distribution ◽  
Pulse Height Distribution ◽  
Pulse Height Analyzer ◽  
X Ray ◽  
Detector Pulse

AbstractA comparison of the relative merits of the energy dispersive derector-pulse height analyzer, scintillation detector-graphite monochromator, and proportional detector-pulse height analyzer combinations.Typical energy dispersive detectors are not configured for maximum efficiency on the diffractometer. Being only on the order of 3 mm diameter, a good deal of the available information is not collected by the detector. This is especially true with the Wide optics found in modern diffractometers. The energy dispersive detector incorporated into this system is optimized for the x-ray diffractometer. Its detection area is a 1.25 X 0.25 inch rectangle. The resolution is only sufficient to remove the Kβ portion of the spectrum.Conventional diffractometer techniques incorporate either a scintillation detector-crystal monochromator, or a proportional detector-pulse height analyser combination. The question posed is “what are the advantages in signal to noise ratio and pulse height distribution of the energy dispersive-pulse height analyzer over the more conventional arrangements.”

Energy Distributions of 662 keV Multiply Compton-Scattered Photons in Copper

2016 ◽  
Vol 675-676 ◽  
pp. 726-729
Author(s):  
Pruek Prongsamrong ◽  
Kittipong Siengsanoh ◽  
P. Limkitjaroenporn ◽  
P. Kanchanakul ◽  
J. Kaewkhao
Keyword(s):  
Intensity Distribution ◽  
Scintillation Detector ◽  
Pulse Height ◽  
Compton Effect ◽  
Height Distribution ◽  
Pulse Height Distribution ◽  
Energy Distributions ◽  
Scattering Angle

A scattered photons spectrum from Compton effect were observed by pulse-height distribution of a NaI(Tl) scintillation detector. This also results in extraction of intensity distribution of multiply scattered events originating from interactions of 662 keV photons with both targets of copper sizes. The observed pulse-height distributions are a combination of singly and multiply scattered events in same photopeak. To evaluate the contribution of multiply scattered events, the spectrum of singly scattered events used reconstructed analytically. The results show that the lowest multiply scattered events occur at scattering angle 90 degree.

Energy-dependent dead-time correction in digital pulse processors applied to silicon drift detector's X-ray spectra

2018 ◽  
Vol 25 (2) ◽  
pp. 484-495 ◽  
Author(s):  
Suelen F. Barros ◽  
Vito R. Vanin ◽  
Alexandre A. Malafronte ◽  
Nora L. Maidana ◽  
Marcos N. Martins
Keyword(s):  
Dead Time ◽  
Pulse Height ◽  
Height Distribution ◽  
Pulse Height Distribution ◽  
Dead Time Correction ◽  
Time Model ◽  
X Ray ◽  
Digital Pulse ◽  
Analytical Correction ◽  
Energy Dependent

Dead-time effects in X-ray spectra taken with a digital pulse processor and a silicon drift detector were investigated when the number of events at the low-energy end of the spectrum was more than half of the total, at counting rates up to 56 kHz. It was found that dead-time losses in the spectra are energy dependent and an analytical correction for this effect, which takes into account pulse pile-up, is proposed. This and the usual models have been applied to experimental measurements, evaluating the dead-time fraction either from the calculations or using the value given by the detector acquisition system. The energy-dependent dead-time model proposed fits accurately the experimental energy spectra in the range of counting rates explored in this work. A selection chart of the simplest mathematical model able to correct the pulse-height distribution according to counting rate and energy spectrum characteristics is included.

THE RESOLUTION CORRECTION IN THE SCINTILLATION SPECTROMETRY OF CONTINUOUS X RAYS

1958 ◽  
Vol 36 (12) ◽  
pp. 1624-1633 ◽  
Author(s):  
W. R. Dixon ◽  
J. H. Aitken
Keyword(s):  
Integral Equation ◽  
Numerical Analysis ◽  
Numerical Methods ◽  
Analytical Procedure ◽  
Pulse Height ◽  
Matrix Inversion ◽  
Height Distribution ◽  
X Rays ◽  
Smooth Solutions ◽  
Pulse Height Distribution

The problem of making resolution corrections in the scintillation spectrometry of continuous X rays is discussed. Analytical solutions are given to the integral equation which describes the effect of the statistical spread in pulse height. The practical necessity of making some kind of numerical analysis is pointed out. Difficulties with numerical methods arise from the fact that the observed pulse-height distribution cannot be defined precisely. As a result it is possible in practice only to find smooth "solutions". Additional difficulties arise if the numerical method is based on an invalid analytical procedure. For example matrix inversion is of doubtful value in making the resolution correction because there does not appear to be an inverse kernel for the integral equation in question.

Pulse height distribution of signals produced by exposing a thin GEM chamber to beta rays from an Sr-90 source

2014 ◽  
Vol 64 (9) ◽  
pp. 1281-1287
Author(s):  
B. J. Ahn ◽  
Y. J. Ha ◽  
C. H. Hahn ◽  
S. T. Park ◽  
C-Y Yi ◽  
...  
Keyword(s):  
Pulse Height ◽  
Height Distribution ◽  
Pulse Height Distribution
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