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A SILICON DRIFT PHOTODIODE FOR SCINTILLATION SPECTROSCOPY

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
14582
Program Year/Program:
1991 / SBIR
Agency Tracking Number:
14582
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Radiation Monitoring Devices, Inc.
44 Hunt St. Watertown, MA 02472-
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1991
Title: A SILICON DRIFT PHOTODIODE FOR SCINTILLATION SPECTROSCOPY
Agency: DOE
Contract: N/A
Award Amount: $50,000.00
 

Abstract:

SCINTILLATION DETECTORS HAVE REMAINED THE LEADING TYPE OF DETECTOR IN MANY AREAS OF NUCLEAR PHYSICS. ALTHOUGH IMPROVEMENTS IN SCINTILLATOR CYYSTAL TECHNOLOGY HAVE EXTENDED THE UTILITY OF SCINTILLATOR-BASED SYSTEMS, SERIOUS DEFICIENCIES IN THE OPTICAL DETECTORS USED WITH THE SCINTILLATOR CRYSTALS ARE LIMITING THE FULL POTENTIAL OF THIS DETECTOR TECHNOLOGY. CONVENTIONAL SCINTILLATION SYSTEMS USE PHOTOMULTIPLIER TUBES OR SILICON P-TYPE-INTRINSIC-N-TYPE PHOTODIODES AS OPTICAL DETECTORS. UNFORTUNATELY, BOTH OPTICAL DETECTOR SYSTEMS HAVE SERIOUS DEFICIENCIES IN TERMS OF QUANTUM EFFICIENCY AND SIGNAL-TO-NOISE RATIO. RECENTLY, IT HAS BEEN DEMONSTRATED THAT SILICON DRIFT PHOTODIODES CAN BE MADE WITH VERY LOW NOISE, AND IT HAS BEEN SUGGESTED THAT THESE DEVICES MAY BE QUITE USEFUL AS SCINTILLATION PHOTODETECTORS. THE PHASE I WORK IS PRODUCING SILICON DRIFT PHOTODIODES THAT ARE DERIVATIVES OF DEVICES PRESENTLY BEING DEVELOPED FOR APPLICATIONS IN OTHER DISCIPLINES (E.G., HIGH ENERGY PHYSICS); THEIR QUANTUM EFFICIENCY IS BEING OPTIMIZED AT BLUE-GREEN (400 TO 550 NM) WAVELENGTHS BY PERFORMING AN "OPTIMIZED" SERIES OF P+ DIFFUSIONS TO THE FRONT (LIGHT-SENSITIVE) SURFACE OF THE DEVICE.

Principal Investigator:

Dr Michael R Squillante
Principal Investigator
0

Business Contact:


6179261167
Small Business Information at Submission:

Radiation Monitoring Devices
44 Hunt St Watertown, MA 02172

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No