Development of monolithic Cd1-xZnxTe arrays with improved energy and spatial resolution

Richard C. Schirato; Raulf M. Polichar; John H. Reed

doi:10.1117/12.179999

12 July 1994 Development of monolithic Cd_1-xZn_xTe arrays with improved energy and spatial resolution

Richard C. Schirato, Raulf M. Polichar, John H. Reed

Proceedings Volume 2278, X-Ray and UV Detectors; (1994) https://doi.org/10.1117/12.179999
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

We have fabricated several monolithic x-ray detector arrays from Cd_0.9Zn_0.1Te material. The principle advantages of this material are its relatively high stopping power and room temperature operation. Recently fabricated linear arrays exhibit improved spatial and energy resolution as compared to our previous versions. Each array is 25.3 mm long with 32 independent detector elements, yielding a center-to-center spacing of 0.8 mm. Gaps of less than 100 micrometers , but with greater than 2 gigaohms of resistance, separate the pixel contacts. Our results indicate that smaller spacings and gap widths are possible with our current fabrication methods. The arrays have been operated in a pulse counting mode with photon energy discrimination. Results for energy resolution and spatial response are presented. Examples of low dose x ray transmission images obtained with a prototype linear scanner utilizing multiple arrays are shown here. By using the energy discrimination capability of the arrays and electronic readout, we have also been able to generate dual-energy images of various samples.

Citation Download Citation

Richard C. Schirato, Raulf M. Polichar, and John H. Reed "Development of monolithic Cd_1-xZn_xTe arrays with improved energy and spatial resolution", Proc. SPIE 2278, X-Ray and UV Detectors, (12 July 1994); https://doi.org/10.1117/12.179999

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