THALLIUM BROMIDE NUCLEAR DETECTORS

Award Information
Agency:
National Science Foundation
Branch
n/a
Amount:
$226,232.00
Award Year:
1989
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
7570
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Radiation Monitoring Devices
44 Hunt Street, Watertown, MA, 02172
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Michael R Squillante Phd
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
THALLIUM BROMIDE (T1BR) IS A NEW CUBIC SEMICONDUCTOR. THE HIGH ATOMIC NUMBERS OF ITS CONSTITUENT ELEMENTS GIVES IT EXTRAORDINARY PHOTOELECTRIC ABSORPTION EFFICIENCY FOR GAMMA PHOTONS, WHILE ITS 2.5 EV BANDGAP PROMISES PERFORMANCE AT TEMPERATURES UP TO 250XC. IT HAS SHOWN SOME PROMISE AS AHIGH EFFICIENCY SOLID-STATE DETECTOR, BUT EARLY DEVICES WERELIMITED BY MATERIAL IMPURITIES AND IMPERFECTIONS. IN PHASE I WE PROPOSE TO RESEARCH PURIFICATION TECHNIQUES NEEDED TO PREPARE HIGH PURITY CRYSTALS WITH SUFFICIENT CHARGE TRANSPORT PROPERTIES FOR NUCLEAR DETECTORS. IN PHASE II WE WILL RESEARCH TECHNIQUES TO PREPARE LARGE SINGLE CRYSTALS AND CONTACT STRUCTURES TO OPTIMIZE THE NUCLEAR DETECTION CHARACTERISTICS OF THIS NOVEL MATERIAL.

* information listed above is at the time of submission.

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