Comparative Studies of Ionizing Radiation Detectors Made on the Basis of Various Types of Diamond Plates

2021 ◽  
Vol 23 (2) ◽  
pp. 68-75
Author(s):  
Altukhov A.A. ◽  
Keyword(s):  
Ionizing Radiation ◽  
Single Crystal ◽  
Comparative Studies ◽  
Collection Efficiency ◽  
Radiation Detectors ◽  
Charge Collection ◽  
Alpha Radiation ◽  
Charge Collection Efficiency ◽  
Polarization Phenomena

The results of experiments on the study of polarization phenomena and the charge collection efficiency in test structures of diamond ionizing radiation detectors using diamond plates of various types, including single-crystal NRNT-type, single-crystal CVD-type, as well as polycrystalline type, when exposed to alpha-radiation with an energy of 5.5 MeV are presented. Studies have demonstrated the existence of a number of problems with the device quality of diamond plates that affect the performance of spec-trometric-type detectors.

Study of the charge collection efficiency of CdZnTe radiation detectors

1996 ◽  
Vol 25 (8) ◽  
pp. 1221-1231 ◽  
Author(s):  
Y. Nemirovsky ◽  
A. Ruzin ◽  
G. Asa ◽  
J. Gorelik
Keyword(s):  
Collection Efficiency ◽  
Radiation Detectors ◽  
Charge Collection ◽  
Charge Collection Efficiency

Investigation of the Charge Collection Efficiency of CdMnTe Radiation Detectors

2012 ◽  
Vol 59 (3) ◽  
pp. 634-641 ◽  
Author(s):  
R. Rafiei ◽  
D. Boardman ◽  
A. Sarbutt ◽  
D. A. Prokopovich ◽  
K. Kim ◽  
...  
Keyword(s):  
Collection Efficiency ◽  
Radiation Detectors ◽  
Charge Collection ◽  
Charge Collection Efficiency

Studies of Charge Collection in GaAs Radiation Detectors

1993 ◽  
Vol 302 ◽  
Author(s):  
K Berwick ◽  
M R Brozel ◽  
C M Butiar ◽  
M Cowperthwaite ◽  
Y Hou
Keyword(s):  
Electric Field ◽  
Collection Efficiency ◽  
Radiation Detectors ◽  
Alpha Particles ◽  
Uniform Electric Field ◽  
Charge Collection ◽  
Applied Bias ◽  
Particle Detectors ◽  
Charge Collection Efficiency ◽  
Lec Gaas

ABSTRACTThe behaviour of the charge collection efficiency of particle detectors fabricated from Semi-Insulating (SI) Liquid Encapsulated Czochralski (LEC) GaAs as a function of applied bias is investigated for alpha particles and it is shown that it cannot be explained by simple models that assume a uniform electric field across the detector. To investigate this the electric field within the SI GaAs has been studied. We have attempted to correlate the measured charge collection efficiency with the observed field distributions. Some correlation is found but other effects may also be present.

scholarly journals EFFECT OF DEFECTS ORIGINATING UNDER THE PROTON IRRADIATION ON THE ELECTROPHYSICAL AND DETECTOR PROPERTIES OF CdTe:Cl AND CdZnTe

2021 ◽  
pp. 43-50
Author(s):  
A.I. Kondrik
Keyword(s):  
Proton Irradiation ◽  
Collection Efficiency ◽  
Energy Levels ◽  
Radiation Detectors ◽  
High Energy ◽  
Charge Collection ◽  
Radiation Defects ◽  
Initial State ◽  
Charge Collection Efficiency ◽  
Factors Affecting

The work is dedicated to studying by computer modeling the mechanisms of the influence of radiation defects, originating under high energy proton irradiation, on the resistivity ρ, lifetime of nonequilibrium electrons n and holes p in CdTe:Cl and Cd0.9Zn0.1Te, and charge collection efficiency η of room temperature ionizing radiation detectors based on these materials. The effect of recombination at deep levels of radiation defects on the degradation of n, p, and  of detectors based on CdTe:Cl and Cd0.9Zn0.1Te was studied. Energy levels of radiation defects also substantially effect on compensation degree of semiconductor decreasing ρ. The main factors affecting the abrupt or gradual decrease in the resistivity and charge collection efficiency of these detectors during their bombardment by high-energy protons, leading to complete degradation of their recording ability, were found. The important role of purity and deep donor concentration in initial state of the detector material was indicated.

scholarly journals Ion Microprobe Study of the Polarization Quenching Techniques in Single Crystal Diamond Radiation Detectors

Materials ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 388
Author(s):  
Mauricio R. Ramos ◽  
Andreo Crnjac ◽  
Donny Cosic ◽  
Milko Jakšić
Keyword(s):  
Single Crystal ◽  
Collection Efficiency ◽  
Ion Beam ◽  
Extreme Environments ◽  
Chemical Vapor ◽  
Radiation Detectors ◽  
Nuclear Microprobe ◽  
Charge Collection Efficiency ◽  
Single Crystal Diamond ◽  
Vapor Deposition Technique

Synthetic single crystal diamond grown using the chemical vapor deposition technique constitutes an extraordinary candidate material for monitoring radiation in extreme environments. However, under certain conditions, a progressive creation of space charge regions within the crystal can lead to the deterioration of charge collection efficiency. This phenomenon is called polarization and represents one of the major drawbacks associated with using this type of device. In this study, we explore different techniques to mitigate the degradation of signal due to polarization. For this purpose, two different diamond detectors are characterized by the ion beam-induced charge technique using a nuclear microprobe, which utilizes MeV energy ions of different penetration depths to probe charge transport in the detectors. The effect of polarization is analyzed by turning off the bias applied to the detector during continuous or discontinuous irradiation, and also by alternating bias polarity. In addition, the beneficial influence of temperature for reducing the effect of polarization is also observed. Finally, the effect of illuminating the detector with light is also measured. Our experimental results indicate that heating a detector or turning off the bias, and then applying it during continuous irradiation can be used as satisfactory methods for recovering the CCE value close to that of a prepolarized state. In damaged regions, illumination with white light can be used as a standard method to suppress the strength of polarization induced by holes.

3D imaging of radiation damage in silicon sensor and spatial mapping of charge collection efficiency

2013 ◽  
Vol 8 (03) ◽  
pp. C03023-C03023 ◽  
Author(s):  
M Jakubek ◽  
J Jakubek ◽  
J Zemlicka ◽  
M Platkevic ◽  
V Havranek ◽  
...  
Keyword(s):  
Radiation Damage ◽  
3D Imaging ◽  
Collection Efficiency ◽  
Charge Collection ◽  
Spatial Mapping ◽  
Charge Collection Efficiency ◽  
Silicon Sensor
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