GaAs radiation imaging detectors for nondestructive testing, medical, and biological applications

Anton V. Tyazhev; Vladimir A. Novikov; Olga B. Koretskaya; Dmitry Y. Mokeev; Oleg P. Tolbanov; Sergey A. Ryabkov; Gennady I. Ayzenshtat

doi:10.1117/12.613410

16 September 2005 GaAs radiation imaging detectors for nondestructive testing, medical, and biological applications

Anton V. Tyazhev, Vladimir A. Novikov, Olga B. Koretskaya, Dmitry Y. Mokeev, Oleg P. Tolbanov, Sergey A. Ryabkov, Gennady I. Ayzenshtat

Author Affiliations +

Proceedings Volume 5922, Hard X-Ray and Gamma-Ray Detector Physics VII; 59220Q (2005) https://doi.org/10.1117/12.613410
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Results obtained from development, construction, testing, and evaluation of GaAs:Cr ionizing radiation detectors and X-ray digital imaging systems based on such detectors are presented. The technology devised is shown to make possible the development of detectors with the following parameters: electron mobility - electron lifetime product of 10^-4cm²/V, hole mobility - hole lifetime product of 10^-6cm²/V, gamma-radiation resistance of ≥ 51Mrad, active layer thickness as great as 800μm, and detector chip dimensions of 51×51mm². The detectors under consideration exhibit high speed of response (≤10ns) and high X- and charged-particle radiation sensitivity. The detector output signal is linearly dependent on the X-ray irradiation dose rate up to 120mR/s and X-ray quantum energy up to 3MeV. Scanning detection units to be used in mammographs and fluorographs and in nondestructive testing devices were constructed and tested. The spatial resolution of the detection systems is 5lp/mm.

Citation Download Citation

Anton V. Tyazhev, Vladimir A. Novikov, Olga B. Koretskaya, Dmitry Y. Mokeev, Oleg P. Tolbanov, Sergey A. Ryabkov, and Gennady I. Ayzenshtat "GaAs radiation imaging detectors for nondestructive testing, medical, and biological applications", Proc. SPIE 5922, Hard X-Ray and Gamma-Ray Detector Physics VII, 59220Q (16 September 2005); https://doi.org/10.1117/12.613410

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available