SOFT X-RAY WINDOW ENCAPSULENT FOR MERCURIC IODIDE DETECTORS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$382,920.00
Award Year:
1984
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
631
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Radiation Monitoring Devices
44 Hunt Street, Watetown, MA, 02172
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr. Gerald Entine
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
FOR MANY YEARS MERCURIC IODIDE HAS APPEARED TO BE AN IDEAL MATERIAL FOR USE AS AN UNCOOLED X-RAY AND GAMMA-RAY DETECTOR. IT HAS DEMONSTRATED EXCEPTIONAL ENERGY RESOLUTIONFOR LOW ENERGY X-RAYS AND HAS BEEN CONSIDERED FOR SEVERAL NASA SPACE MISSIONS. HOWEVER, MERCURIC IODIDE DETECTORS HAVE BEEN PLAGUED BY SEVERE INSTABILITY PROBLEMS RELATED TO THE CHEMICAL AND PHYSICAL PROPERTIES OF THE MERCURIC IODIDE CRYSTALS. A PRACTICAL SOLUTION TO THIS MAJOR REMAINING OBSTACLE TO THE SUCCESSFUL APPLICATION OF MERCURIC IODIDE DEVICES IS THE KEY GOAL IN THIS PROJECT. IT EXPLORES A POSSIBLE SOLUTION TO THIS PROBLEM BY THE USE OF SPECIALLY FORMULATED ENCAPSULANT FILMS OF ORGANIC POLYMERS. THIS PROGRAM STUDIES BOTH THE CHEMICAL PROPERTIES OF ENCAPSULANTSTHEMSELVES AND THEIR CHEMICAL INTERACTION WITH MERCURIC IODIDE. THE GOAL IS TO MAKE A THIN RUGGED ENCAPSULATING FILM USING ORGANIC POLYMERS WHICH WILL BE STABLE AND WILL NOT SIGNIFICANTLY REDUCE SENSITIVITY.

* information listed above is at the time of submission.

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