Calculation of the pulse height distribution and counting efficiency of a fast neutron scintillation detector

1963 ◽  
Vol 15 (3) ◽  
pp. 895-901
Author(s):  
V. G. Zolotukhin ◽  
G. G. Doroshenko ◽  
B. A. Efimenko
Keyword(s):  
Fast Neutron ◽  
Scintillation Detector ◽  
Pulse Height ◽  
Counting Efficiency ◽  
Height Distribution ◽  
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.

THE PULSE HEIGHT DISTRIBUTION FROM BORON TRIFLUORIDE PROPORTIONAL COUNTERS IRRADIATED WITH 4.87-MEV. NEUTRONS

1955 ◽  
Vol 33 (5) ◽  
pp. 219-224 ◽  
Author(s):  
D. B. James ◽  
W. Kubelka ◽  
S. A. Heiberg ◽  
J. B. Warren
Keyword(s):  
Fast Neutron ◽  
Boron Trifluoride ◽  
Pulse Height ◽  
The Other ◽  
Height Distribution ◽  
Q Value ◽  
Pulse Height Distribution ◽  
Neutron Spectra ◽  
Proportional Counters ◽  
Q Values

Two boron trifluoride proportional counters, one containing normal isotopic boron and the other containing boron enriched to 96% B10, have been irradiated with 4.87-Mev. neutrons from the reaction D(d, n)He3. In addition to the reactions B10(n, α)Li7 and B10(n, α)Li7* with Q-values of 2.79 Mev. and 2.31 Mev. respectively, two other reactions have been observed. These are (i) F19(n, α)N16* with a Q-value of −1.77 ± 0.15 Mev. and (ii) either B10(n, p)Be10 or, much more probably, B10(n, t)Be8 with a Q-value of 0.35 ± 0.20 Mev. Owing to the presence of these two reactions, the analysis of complex fast-neutron spectra by the use of such counters is not feasible.

Neutron bombardment of counting diamonds

1956 ◽  
Vol 234 (1198) ◽  
pp. 432-440 ◽  
Keyword(s):  
Nuclear Reactor ◽  
Pulse Height ◽  
Counting Efficiency ◽  
Layered Crystal ◽  
Height Distribution ◽  
Partial Recovery ◽  
Pulse Height Distribution ◽  
Neutron Bombardment ◽  
Interferometric Investigation ◽  
Additional Charge

Several counting diamonds were exposed to nuclear radiations in a nuclear reactor. The counting efficiency is reduced approximately in proportion to the radiation dosage; a corresponding increase occurs in the optical absorption. Annealing at red heat leads only to partial recovery in both counting and optical transparency. Examination was also made of the effect of neutron bombardment on pulse-height distribution when recording α -particles of homogeneous energy by a diamond counter, used as a solid ionization chamber. The results are interpreted in terms of intrinsic charge traps and of additional charge traps produced by the neutrons. The layered crystal texture disclosed agrees with that already proposed by Champion from earlier counter work and by Pandya & Tolansky (1954) from an interferometric investigation of etch.

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.

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