Geant4 simulations of detector response matrix for Caliste-SO

2014 ◽  
Author(s):  
J. Barylak ◽  
P. Podgórski ◽  
T. Mrozek ◽  
A. Barylak ◽  
M. Stęślicki ◽  
...  
Keyword(s):  
Detector Response ◽  
Response Matrix

Application of the Correction Algorithm Based on the ME-LM Method for Improvement of Peak Identification in the Instrumental Spectrum of the Scintillation Gamma-Radiometer

ANRI ◽  
2021 ◽  
Vol 0 (2) ◽  
pp. 54-64
Author(s):  
Aliaksei Zaharadniuk ◽  
Dmitri Abalonski ◽  
Raman Lukashevich
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Maximum Likelihood ◽  
Expectation Maximization ◽  
Processing Time ◽  
Likelihood Estimation ◽  
Detector Response ◽  
Response Matrix ◽  
Correction Algorithm ◽  
Scintillation Gamma

The paper considers an algorithm for correcting the instrumental spectrum of the gamma-radiometer with a NaI(Tl) detector. The algorithm is based on the ME-LM method (Maximum Likelihood Estimation using Expectation Maximization), which uses a detector response matrix obtained by Monte Carlo simulation. The main advantage of the algorithm is the rescaling procedure, which significantly reduces the spectrum processing time.

A Modified Method for Correcting Instrumental Spectrum of High Hurity Germanium Detector

ANRI ◽  
2020 ◽  
Vol 0 (4) ◽  
pp. 14-28
Author(s):  
Aliaksei Zaharadniuk ◽  
Roman Lukashevich ◽  
Konstantin Syankovsky ◽  
Aleksandr Novichenko
Keyword(s):  
Hpge Detector ◽  
Germanium Detector ◽  
Smooth Curve ◽  
Detector Response ◽  
Response Matrix ◽  
Modified Method ◽  
High Purity Germanium ◽  
The Monte Carlo Method ◽  
True Shape ◽  
Corrected Spectrum

The paper considers an improved method for correcting the instrumental spectrum of a high purity germanium detector (HPGe detector) in the energy range (10–300 keV). The method uses a detector response matrix obtained by the Monte Carlo method, which allows to bring the appearance of the instrumental spectrum of the HPGe detector closer to its true shape by minimizing the influence of the detector response function. The main difference of this method from analogs is the additional deconvolution algorithm of the corrected spectrum, which makes it possible to obtain a smooth curve at the output.

Accurate reconstruction of soft X-ray energy spectrum in detector response matrix

2019 ◽  
Vol 62 (12) ◽  
Author(s):  
RunLong Gao ◽  
Yang Liu ◽  
XiaoPing Ouyang ◽  
Jing Chen ◽  
Xiao Ouyang
Keyword(s):  
Energy Spectrum ◽  
Detector Response ◽  
Response Matrix ◽  
X Ray ◽  
Accurate Reconstruction

Flame ionization detector response to coeluting hydrocarbons and carbon disulphide and its application to the determination of the sum of C6-C11 alkanes and cycloalkanes in air

1983 ◽  
Vol 48 (3) ◽  
pp. 722-734
Author(s):  
Martin Koval
Keyword(s):  
Carbon Disulphide ◽  
Internal Standard ◽  
Calibration Procedure ◽  
Detector Response ◽  
Column Temperature ◽  
Flame Ionization ◽  
Other Substances ◽  
Flame Ionisation Detector ◽  
Ionisation Detector

The flame ionisation detector response to C6-C11 aliphatic hydrocarbon solutions in carbon disulphide in the concentration range between 1.3-9.5 mg ml-1 retained lineary despite the excess of solvent entering the detector simultaneously with the analyte. Pure carbon disulphide exhibited a small positive detector response which did not interfere in calibration procedure and which, under certain GC conditions, inverted to negative values. This response was not proportional to the injected volume and was strongly influenced by the column temperature and/or bleed. On the basis of these findings, a method compatible with the widely used charcoal tube carbon disulphide desorption procedure was developed and evaluated. It consists of static desorption of the sum of aliphatic alkanes and cycloalkanes from the activated charcoal after which an internal standard is added to the supernatant eluate. The resulting carbon disulphide solution is analysed on a highly polar stationary phase 1,2,3-tris(2-cyanoethoxy)propane where the solvent and the analyte coelute in a single peak, the height of which is practically proportional to the sum of alkanes and cycloalkanes present. This also makes determinations of other substances present in the sample more simple. The field test of the proposed method yielded values comparable in precision and accuracy with a control infrared spectrophotometric method.

Screening and quantification of hypnotic sedatives in serum by capillary gas chromatography with a nitrogen-phosphorus detector, and confirmation by capillary gas chromatography-mass spectrometry.

1986 ◽  
Vol 32 (2) ◽  
pp. 325-328 ◽  
Author(s):  
V A Soo ◽  
R J Bergert ◽  
D G Deutsch
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Capillary Gas Chromatography ◽  
Gas Chromatography Mass Spectrometry ◽  
Detector Response ◽  
Capillary Gc ◽  
Chromatography Mass Spectrometry ◽  
Nitrogen Phosphorus Detector ◽  
Sedative Drugs ◽  
Nitrogen Phosphorus

Abstract We describe a quantitative screen for hypnotic-sedative drugs in which we use capillary gas chromatography with a nitrogen-phosphorus detector (GC/NPD) as the primary method and capillary gas chromatography-mass spectrometry (GC-MS) for confirmation. GC retention times of the acid-extracted underivatized drugs were stable (CVs less than 1%), and the detector response varied linearly over a 20-fold concentration range with a mean correlation coefficient for 11 drugs of 0.989. The limits of detection were satisfactory (0.5 mg/L in a 0.5-mL serum sample and 1-microL injection volume), as were precision (average CV 5.2% within day, 6.4% between day). The complementary use of capillary GC-MS not only unambiguously confirms presumptive peaks identified by GC, but also prevents reports of false positives and identifies compounds not included in the quantitative GC screen that may be listed in the GC-MS library.

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