NDLI: Analysis of uniformity of as prepared and irradiated SI GaAs radiation detectors

Content Provider	IEEE Xplore Digital Library
Author	Nava, F. Vanni, P. Canali, C. Apostolo, G. Manfredotti, C. Polesello, P. Vittone, E.
Copyright Year	1963
Abstract	SI (semi-insulating) LEC (liquid encapsulated Czochralsky) GaAs (gallium arsenide) Schottky barrier detectors have been irradiated with high energy protons (24 GeV/c, fluence up to 16.45/spl times/10/sup 13/ p/cm/sup 2/). The detectors have been characterised in terms of I/V curves, charge collection efficiency (cce) for incident 5.48 MeV /spl alpha/-, 2 MeV proton and minimum ionizing /spl beta/-particles and of cce maps by microprobe technique IBIC (ion beam induced charge). At the highest fluence a significant degradation of the electron and hole collection efficiencies and a remarkable improvement of the FWHM energy resolution have been measured with /spl alpha/- and proton particles. Furthermore the reduction in the cce is greater than the one measured with /spl beta/-particles and the energy resolution worsens with increasing the applied bias, V/sub a/, above the voltage V/sub d/ necessary to extend the electric field all the way to the ohmic contact. On the contrary, in the unirradiated detectors the charge collection efficiencies with /spl alpha/-, /spl beta/- and proton particles are quite similar and the energy resolution improves with increasing V/sub q/>V/sub d/. IBIC spectra and IBIC space maps obtained by scanning a focused (8 /spl mu/m/sup 2/) 2 MeV proton microbeam on front (Schottky) and back (ohmic) contacts, support the observed electric field dependence of the energy resolution both in unirradiated and most irradiated detectors. The results obtained let us explain the effect of the electric field strength and the plasma on the collection of the charge carriers and the FWHM energy resolution.
Sponsorship	IEEE Nuclear and Plasma Sciences Society Computer Applications in Nuclear and Plasma Sciences (CANPS) Lawrence Berkeley Lab. Lawrence Livermore Nat. Lab. APS College of William and Mary Continuous Electron Beam Accelerator Facility NASA Defence Nuclear Agency Sandia National Laboratories Jet Propulsion Laboratory Brookhaven Nat. Lab. Lawrence Livermore Nat. Lab IEEE/NPPS Radiat. Effects Committee Defence Nuclear Agency/DoD Sandia National Laboratories/DOE Jet Propulsion Laboratory/NASA Phillips Lab./DoD
Starting Page	609
Ending Page	616
Page Count	8
File Size	1030368
File Format	PDF
ISSN	00189499
Volume Number	45
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gallium arsenide Protons Energy resolution Detectors Energy measurement Schottky barriers Ion beams Degradation Charge carrier processes Particle measurements
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A comparative study of heavily irradiated silicon and non irradiated SI LEC GaAs detectors

Performances of SI GaAs detectors fabricated with implanted ohmic contacts

Performance of a Schottky surface barrier radiation detector based on bulk undoped semi-insulating GaAs at reduced temperature

Development of bulk GaAs room temperature radiation detectors

Radiation-induced damage in GaAs particle detectors

Charge collection response of SI GaAs p-i-n detectors

Micro-inhomogeneity effects and radiation damage in semi-insulating GaAs radiation detectors

Evidence for charge gain mechanism in SI-GaAs detectors with epitaxial junction

Radiation Effects in GaAs MIS Schotiky Diodes

Analysis of uniformity of as prepared and irradiated SI GaAs radiation detectors

Similar Documents

A comparative study of heavily irradiated silicon and non irradiated SI LEC GaAs detectors

Performances of SI GaAs detectors fabricated with implanted ohmic contacts

Performance of a Schottky surface barrier radiation detector based on bulk undoped semi-insulating GaAs at reduced temperature

Development of bulk GaAs room temperature radiation detectors

Radiation-induced damage in GaAs particle detectors

Charge collection response of SI GaAs p-i-n detectors

Micro-inhomogeneity effects and radiation damage in semi-insulating GaAs radiation detectors

Evidence for charge gain mechanism in SI-GaAs detectors with epitaxial junction

Radiation Effects in GaAs MIS Schotiky Diodes

Analysis of uniformity of as prepared and irradiated SI GaAs radiation detectors