Investigation of the Charge Collection Efficiency of CdMnTe Radiation Detectors

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.

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Study of the charge collection efficiency of CdZnTe radiation detectors

Journal of Electronic Materials ◽

10.1007/bf02655012 ◽

1996 ◽

Vol 25 (8) ◽

pp. 1221-1231 ◽

Cited By ~ 63

Author(s):

Y. Nemirovsky ◽

A. Ruzin ◽

G. Asa ◽

J. Gorelik

Keyword(s):

Collection Efficiency ◽

Radiation Detectors ◽

Charge Collection ◽

Charge Collection Efficiency

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Influence of electron traps on charge-collection efficiency in GaAs radiation detectors

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/0168-9002(94)90617-3 ◽

1994 ◽

Vol 349 (1) ◽

pp. 156-159 ◽

Cited By ~ 21

Author(s):

F. Nava ◽

C. Canali ◽

A. Castaldini ◽

A. Cavallini ◽

S. D'Auria ◽

...

Keyword(s):

Collection Efficiency ◽

Radiation Detectors ◽

Charge Collection ◽

Charge Collection Efficiency ◽

Electron Traps

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Studies of Charge Collection in GaAs Radiation Detectors

MRS Proceedings ◽

10.1557/proc-302-363 ◽

1993 ◽

Vol 302 ◽

Cited By ~ 11

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.

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

10.46813/2021-132-043 ◽

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.

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