SOLID STATE RADIAC

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 9269
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1988
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Xsirius Scientific Inc
4676 Admiralty Wy - Ste 530, Marina Del Ray, CA, 90292
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 WAYNE F SCHNEPPLE
 (213) 821-0933
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THIS INNOVATION PROPOSES FEASIBILITY STUDIES LEADING TO THE DEVELOPMENT OF A FULLY PORTABLE AND SELF-CONTAINED UNDERWATER RADIAC INSTRUMENT CAPABLE OF CONCURRENT AND SEPARATE DETECTION, ANALYSIS, MEASUREMENT AND DISPLAY OF BOTH GAMMA AND NEUTRON RADIATION. THE UNIT WILL BE DESIGNED AS A SMALL, LIGHTWEIGHT, RUGGED, ONE-DIVER INSTRUMENT EMPLOYING SCINTILLATOR CRYSTALS TO CONVERT NUCLEAR RADIATION INTO UV/VISIBLE LIGHT PULSES. THE LIGHT PULSES WILL THEN BE ANALYZED AND MEASURED VIA A NEWLY DEVELOPED AND ADVANCED SOLID STATE AVALANCHE PHOTODETECTOR AND ANCILLIARY ELECTRONICS. TWO ELEMENTS ARE CONSIDERED KEY TO THE BASIC DESIGN CONCEPT. FIRST, IS THE USE OF TWO DIFFERENT SCINTILLATOR MATERIALS - SODIUM IODIDE, WHICH WILL SERVE AS THE PRIMARY, HIGH SENSITIVITY GAMMA DETECTOR AND ALOS AS AN ANTICOINCIDENCE SHIELD, AND GADOLINIUM ORTHOSILICATE FOR ITS THERMAL NEUTRON SENSITIVITY. THE SECOND KEY ELEMENT IS THE USE OF A NEWLY DEVELOPED, LARGE AREA (TO CENTIMETERS IN DIAMETER), HIGH GAIN, SILICON AVALANCHE PHOTODIODE (APD) AS THE LIGHT DETECTOR. THE MORE RUGGED SOLID STATE APD HAS A SMALLER VOLUME, BUT THE SAME SENSITIVE DETECTION AREA AS THE PHOTOMULTIPLIER TUBE NORMALLY USED FOR SCINTILLATOR APPLICATIONS.

* information listed above is at the time of submission.

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