scholarly journals Safeguards Measurements with Ultra-High Resolution Magnetic Microcalorimeter Radiation Detectors

2019 ◽  
Author(s):  
Stephan Friedrich
Keyword(s):  
High Resolution ◽  
Radiation Detectors ◽  
Safeguards Measurements ◽  
Magnetic Microcalorimeter

Modular 64×64 CdZnTe Arrays With Multiplexer Readout for High-Resolution Nuclear Medicine Imaging

1997 ◽  
Vol 487 ◽  
Author(s):  
J. M. Woolfenden ◽  
H. B. Barber ◽  
H. H. Barrett ◽  
E. L. Dereniak ◽  
J. D. Eskin ◽  
...  
Keyword(s):  
Nuclear Medicine ◽  
High Resolution ◽  
Spatial Resolution ◽  
Personal Computer ◽  
Imaging System ◽  
Radiation Detectors ◽  
Readout Circuit ◽  
Nuclear Medicine Imaging ◽  
Pixel Pitch

AbstractWe are developing modular arrays of CdZnTe radiation detectors for high-resolution nuclear medicine imaging. Each detector is delineated into a 64×64 array of pixels; the pixel pitch is 380 jim. Each pixel is connected to a corresponding pad on a multiplexer readout circuit. The imaging system is controlled by a personal computer. We obtained images of standard nuclear medicine phantoms in which the spatial resolution of approximately 1.5 mm was limited by the collimator that was used. Significant improvements in spatial resolution should be possible with different collimator designs. These results are promising for high-resolution nuclear medicine imaging.

Thickness scalability of large volume cadmium zinc telluride high resolution radiation detectors

2009 ◽  
Vol 105 (11) ◽  
pp. 114910 ◽  
Author(s):  
S. A. Awadalla ◽  
H. Chen ◽  
J. Mackenzie ◽  
P. Lu ◽  
K. Iniewski ◽  
...  
Keyword(s):  
High Resolution ◽  
Large Volume ◽  
Cadmium Zinc Telluride ◽  
Zinc Telluride ◽  
Radiation Detectors ◽  
Cadmium Zinc

Influence of defect structure on characteristics of X- and γ-radiation detectors based on CdTe:Cl according to high-resolution X-ray diffractometry

2021 ◽  
Author(s):  
Ihor Fodchuk ◽  
Andrii Kuzmin ◽  
Olena Maslyanchuk ◽  
Ivan Hutsuliak ◽  
Mykola Solodkyi ◽  
...  
Keyword(s):  
High Resolution ◽  
Defect Structure ◽  
Radiation Detectors ◽  
Γ Radiation ◽  
X Ray

The Application of High-Resolution Solid State Detectors to X-Ray Spectrometry - A Review

1971 ◽  
Vol 15 ◽  
pp. 1-35 ◽  
Author(s):  
R. L. Heath
Keyword(s):  
Solid State ◽  
High Resolution ◽  
Field Effect Transistors ◽  
Radiation Detectors ◽  
Low Noise ◽  
Data Systems ◽  
Computer Data ◽  
X Ray ◽  
State Radiation ◽  
On Line

Developments during the past few years in solid-state radiation detectors and low-noise electronics employing field-effect transistors operated at cryogenic temperatures have resulted in the availability of high-resolution energy-dispersive spectrometers for a variety of applications in x-ray spectrometry. Using pulseamplitude analysis techniques, these spectrometers make it possible to obtain multi-elemental analyses on a routine laboratory basis employing x-ray fluorescence techniques. The combination of these spectrometers with small, inexpensive on-line computer data systems makes It possible to obtain rapid on-line qualitative and quantitative analysis of samples in the laboratory and in special field applications. A general review of the present state of development in detectors, electronics and on-line data systems will be presented together with descriptions of applications of such equipment in the laboratory.

scholarly journals High-rate dead-time corrections in a general purpose digital pulse processing system

2015 ◽  
Vol 22 (5) ◽  
pp. 1190-1201 ◽  
Author(s):  
Leonardo Abbene ◽  
Gaetano Gerardi
Keyword(s):  
High Resolution ◽  
Dead Time ◽  
Radiation Detectors ◽  
High Rate ◽  
Energy Spectra ◽  
Dead Time Correction ◽  
Pulse Processing ◽  
Digital Pulse ◽  
Time Correction ◽  
Digital Pulse Processing

Dead-time losses are well recognized and studied drawbacks in counting and spectroscopic systems. In this work the abilities on dead-time correction of a real-time digital pulse processing (DPP) system for high-rate high-resolution radiation measurements are presented. The DPP system, through a fast and slow analysis of the output waveform from radiation detectors, is able to perform multi-parameter analysis (arrival time, pulse width, pulse height, pulse shape,etc.) at high input counting rates (ICRs), allowing accurate counting loss corrections even for variable or transient radiations. The fast analysis is used to obtain both the ICR and energy spectra with high throughput, while the slow analysis is used to obtain high-resolution energy spectra. A complete characterization of the counting capabilities, through both theoretical and experimental approaches, was performed. The dead-time modeling, the throughput curves, the experimental time-interval distributions (TIDs) and the counting uncertainty of the recorded events of both the fast and the slow channels, measured with a planar CdTe (cadmium telluride) detector, will be presented. The throughput formula of a series of two types of dead-times is also derived. The results of dead-time corrections, performed through different methods, will be reported and discussed, pointing out the error on ICR estimation and the simplicity of the procedure. Accurate ICR estimations (nonlinearity < 0.5%) were performed by using the time widths and the TIDs (using 10 ns time bin width) of the detected pulses up to 2.2 Mcps. The digital system allows, after a simple parameter setting, different and sophisticated procedures for dead-time correction, traditionally implemented in complex/dedicated systems and time-consuming set-ups.

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