The effects of large signals on charge collection in radiation detectors: Application to amorphous selenium detectors

2006 ◽  
Vol 99 (12) ◽  
pp. 124501 ◽  
Author(s):  
M. Zahangir Kabir ◽  
E. V. Emelianova ◽  
V. I. Arkhipov ◽  
M. Yunus ◽  
S. O. Kasap ◽  
...  
Keyword(s):  
Radiation Detectors ◽  
Amorphous Selenium ◽  
Charge Collection

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.

A counting and integrating pixel readout chip for amorphous selenium direct radiation detectors for medical imaging applications

2009 ◽  
Author(s):  
A. H. Goldan ◽  
Bahman Hadji ◽  
K. S. Karim ◽  
G. DeCrescenzo ◽  
J. A. Rowlands ◽  
...  
Keyword(s):  
Medical Imaging ◽  
Radiation Detectors ◽  
Amorphous Selenium ◽  
Direct Radiation

Single Crystal CVD Diamond Detectors: Position and Temporal Response Measurements using a Synchrotron Microbeam Probe

2007 ◽  
Vol 1039 ◽  
Author(s):  
John Morse ◽  
Murielle Salomé ◽  
Eleni Berdermann ◽  
Michal Pomorski ◽  
James Grant ◽  
...  
Keyword(s):  
Single Crystal ◽  
Plate Thickness ◽  
Radiation Detectors ◽  
Heavy Ion ◽  
High Energy ◽  
Charge Collection ◽  
Heavy Ion Physics ◽  
X Ray ◽  
Single Crystal Diamond ◽  
Wide Range

AbstractUltrapure, homoeptaxially grown CVD single crystal diamond is a material with great potential for the fabrication of ionizing radiation detectors for high energy, heavy ion physics, and realtime dosimetry for radiotherapy. Only diamond has suitable transmission properties and can offer the required radiation hardness for synchrotron X-ray beam monitoring applications. We report on experiments made using a synchrotron X-ray microbeam probe to investigate the performance of single crystal diamonds operated as position sensitive, solid state ‘ionization chambers’. We show that for a wide range of electric fields >0.3Vµm−1, suitably prepared devices give excellent spatial response uniformity and time stability. With an applied field of 2Vµm−1 complete charge collection times are ∼1nsec for a diamond plate thickness of 100µm. Position sensitivity was obtained for an X-ray beam incident on the isolation gap between adjacent electrodes of a quadrant device: here, a crossover response region that results from charge carrier diffusion extends over ∼20µm. Using GHz bandwidth signal processing electronics, the signal charge collection process was measured with spatial and temporal resolutions of 1µm and <50ps.

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

scholarly journals 3D Radiation Detectors: Charge Collection Characterisation and Applicability of Technology for Microdosimetry

2014 ◽  
Vol 61 (4) ◽  
pp. 1537-1543 ◽  
Author(s):  
Linh T. Tran ◽  
Dale A. Prokopovich ◽  
Marco Petasecca ◽  
Michael L. F. Lerch ◽  
Angela Kok ◽  
...  
Keyword(s):  
Radiation Detectors ◽  
Charge Collection

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.

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