This paper deals with a comparison between experimental gamma-ray spectra recorded with CdTe and ... more This paper deals with a comparison between experimental gamma-ray spectra recorded with CdTe and CdZnTe detectors and a Monte Carlo code simulating the spectrum, in order to extract realistic values of the transport properties of both electrons and holes in these materials. In a second section, these values are compared to that obtained by others using other methods, in order to evaluate the accuracy of the various experimental procedures.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1999
ABSTRACT The precise evaluation of transport properties of both electrons and holes in compound s... more ABSTRACT The precise evaluation of transport properties of both electrons and holes in compound semiconductor detectors, like CdTe or CZT, is of great interest for the development of these devices. Although the electron behaviour can be measured in most cases, that of holes is much more difficult. Both alpha or gamma radiations, as well as conventional computer simulations, have shown their limits. In this paper, we present a new approach based on computer simulations, which are performed at various energies. This model will be applied on various kinds of materials. The results will be discussed in terms of sensitivity of the method, electronic noise level as well as electric field distribution within the detector.
2000 IEEE Nuclear Science Symposium. Conference Record (Cat. No.00CH37149), 2000
Thin CdTe detectors (3×5 mm2 electrode area, 0.5 and 0.8 mm thick), mounted in back-to-back confi... more Thin CdTe detectors (3×5 mm2 electrode area, 0.5 and 0.8 mm thick), mounted in back-to-back configuration with common anode have been characterized. This configuration allows one to double the useful absorbing thickness in the classical planar parallel field (PPF) irradiation geometry and to double the sensitive area in the planar transverse field (PTF) geometry, while maintaining the same interelectrode distance
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, 1999
... Waldes Dusi, Natalia Auricchio, Ezio Caroli, Ariano Donati, Paul Fougeres, Makram Hage-Ali, G... more ... Waldes Dusi, Natalia Auricchio, Ezio Caroli, Ariano Donati, Paul Fougeres, Makram Hage-Ali, Gianni Landini, Eugenio Perillo, Paul Siffert. ... When going outside this region, both these parameters become quickly worse, with a trend well described by the Hecht's relationship. ...
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, 1999
In this paper, we will give first the description of a versatile material analyzer for x-ray crys... more In this paper, we will give first the description of a versatile material analyzer for x-ray crystallographic and compositional analyses. We will describe how we calculate and elaborate glass capillaries; we will describe some important parameters of the total ...
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, 1999
In recent years, room temperature semiconductor detectors like CdTe and CdZnTe have been proposed... more In recent years, room temperature semiconductor detectors like CdTe and CdZnTe have been proposed for several scientific, industrial and medical applications. In some cases, these applications require the capability to operate for a long time in intense, sometimes mixed, radiation fields while retaining full spectroscopic performances. In spite of its importance, a detailed characterization of the effects of the radiation
2000 IEEE Nuclear Science Symposium. Conference Record (Cat. No.00CH37149), 2000
When exposed to an intense radiation field, the spectroscopic capabilities of room-temperature Cd... more When exposed to an intense radiation field, the spectroscopic capabilities of room-temperature CdTe and CdZnTe detectors can be strongly altered by the remarkable injection of energy in the material structure due to the absorption of ionizing particles. In this paper, we report on the effects of electron irradiation on both CdTe and CdZnTe detectors. We have studied the detector response
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2001
CdTe and CdZnTe pixel detectors offer great interest for many applications, especially for medica... more CdTe and CdZnTe pixel detectors offer great interest for many applications, especially for medical and industrial imaging. Up to now, the material, generally, used and investigated for pixel arrays was CZT (Hamel et al., IEEE Trans. Nucl. Sci. 43 (3)(1996) 1422; Barrett et al., ...
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1999
Both CdTe and Cd1−xZnxTe (CZT) can be considered from their physical properties as very good mate... more Both CdTe and Cd1−xZnxTe (CZT) can be considered from their physical properties as very good materials for room temperature X- and γ-rays detection. However, despite years of intense material research, no significant advance has been made to help one to choose between both semiconductors. This paper reviews a few facts about CdTe and CZT to attempt to draw a real
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2002
The performance of room temperature CdTe and CdZnTe detectors exposed to a radiation source can b... more The performance of room temperature CdTe and CdZnTe detectors exposed to a radiation source can be strongly altered by the interaction of the ionizing particles and the material. Up to now, few experimental data are available on the response of II–VI compound detectors to different types of radiation sources. We have carried out a thorough investigation on the effects of
This paper deals with a comparison between experimental gamma-ray spectra recorded with CdTe and ... more This paper deals with a comparison between experimental gamma-ray spectra recorded with CdTe and CdZnTe detectors and a Monte Carlo code simulating the spectrum, in order to extract realistic values of the transport properties of both electrons and holes in these materials. In a second section, these values are compared to that obtained by others using other methods, in order to evaluate the accuracy of the various experimental procedures.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1999
ABSTRACT The precise evaluation of transport properties of both electrons and holes in compound s... more ABSTRACT The precise evaluation of transport properties of both electrons and holes in compound semiconductor detectors, like CdTe or CZT, is of great interest for the development of these devices. Although the electron behaviour can be measured in most cases, that of holes is much more difficult. Both alpha or gamma radiations, as well as conventional computer simulations, have shown their limits. In this paper, we present a new approach based on computer simulations, which are performed at various energies. This model will be applied on various kinds of materials. The results will be discussed in terms of sensitivity of the method, electronic noise level as well as electric field distribution within the detector.
2000 IEEE Nuclear Science Symposium. Conference Record (Cat. No.00CH37149), 2000
Thin CdTe detectors (3×5 mm2 electrode area, 0.5 and 0.8 mm thick), mounted in back-to-back confi... more Thin CdTe detectors (3×5 mm2 electrode area, 0.5 and 0.8 mm thick), mounted in back-to-back configuration with common anode have been characterized. This configuration allows one to double the useful absorbing thickness in the classical planar parallel field (PPF) irradiation geometry and to double the sensitive area in the planar transverse field (PTF) geometry, while maintaining the same interelectrode distance
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, 1999
... Waldes Dusi, Natalia Auricchio, Ezio Caroli, Ariano Donati, Paul Fougeres, Makram Hage-Ali, G... more ... Waldes Dusi, Natalia Auricchio, Ezio Caroli, Ariano Donati, Paul Fougeres, Makram Hage-Ali, Gianni Landini, Eugenio Perillo, Paul Siffert. ... When going outside this region, both these parameters become quickly worse, with a trend well described by the Hecht's relationship. ...
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, 1999
In this paper, we will give first the description of a versatile material analyzer for x-ray crys... more In this paper, we will give first the description of a versatile material analyzer for x-ray crystallographic and compositional analyses. We will describe how we calculate and elaborate glass capillaries; we will describe some important parameters of the total ...
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, 1999
In recent years, room temperature semiconductor detectors like CdTe and CdZnTe have been proposed... more In recent years, room temperature semiconductor detectors like CdTe and CdZnTe have been proposed for several scientific, industrial and medical applications. In some cases, these applications require the capability to operate for a long time in intense, sometimes mixed, radiation fields while retaining full spectroscopic performances. In spite of its importance, a detailed characterization of the effects of the radiation
2000 IEEE Nuclear Science Symposium. Conference Record (Cat. No.00CH37149), 2000
When exposed to an intense radiation field, the spectroscopic capabilities of room-temperature Cd... more When exposed to an intense radiation field, the spectroscopic capabilities of room-temperature CdTe and CdZnTe detectors can be strongly altered by the remarkable injection of energy in the material structure due to the absorption of ionizing particles. In this paper, we report on the effects of electron irradiation on both CdTe and CdZnTe detectors. We have studied the detector response
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2001
CdTe and CdZnTe pixel detectors offer great interest for many applications, especially for medica... more CdTe and CdZnTe pixel detectors offer great interest for many applications, especially for medical and industrial imaging. Up to now, the material, generally, used and investigated for pixel arrays was CZT (Hamel et al., IEEE Trans. Nucl. Sci. 43 (3)(1996) 1422; Barrett et al., ...
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1999
Both CdTe and Cd1−xZnxTe (CZT) can be considered from their physical properties as very good mate... more Both CdTe and Cd1−xZnxTe (CZT) can be considered from their physical properties as very good materials for room temperature X- and γ-rays detection. However, despite years of intense material research, no significant advance has been made to help one to choose between both semiconductors. This paper reviews a few facts about CdTe and CZT to attempt to draw a real
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2002
The performance of room temperature CdTe and CdZnTe detectors exposed to a radiation source can b... more The performance of room temperature CdTe and CdZnTe detectors exposed to a radiation source can be strongly altered by the interaction of the ionizing particles and the material. Up to now, few experimental data are available on the response of II–VI compound detectors to different types of radiation sources. We have carried out a thorough investigation on the effects of
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