DIFFERENTIAL X-RAY ABSORPTION SPECTROSCOPY SYSTEM

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 11293
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1989
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Rj Lee Group
350 Hochberg Rd, Monroeville, PA, 15146
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
X-RAY SPECTROCHEMICAL ANALYSIS, IN CONJUNCTION WITH SCANNINGOR TRANSMISSION ELECTRON MICROSCOPY, IS OFTEN NOT USED BECAUSE CONVENTIONAL ENERGY-DISPERSIVE CRYSTAL DETECTORS ARE EXPENSIVE AND MUST BE MAINTAINED AT LIQUID NITROGEN TEMPERATURES. THESE ADD CONSIDERABLY TO THE EQUIPMENT PURCHASE PRICE AND TO A HIGH AND CONTINUING OPERATING COST. CRYO COMPONENTS ARE CUMBERSOME AND AWKWARD TO CONNECT TO SOME MODELS OF ELECTRON MICROSCOPES. R.J. LEE GROUP, INC., WILL DEVELOP A SIMPLE X-RAY DETECTOR BASED ON THE PRINCIPLES OF ABSORPTION X-RAY SPECTROSCOPY ANDPERSONAL COMPUTER TECHNOLOGY. THE KEY TO SUCCESSFUL IMPLEMENTATION OF THE TECHNIQUE WILL BE VERIFICATION THAT ABSORPTION FILTERS FOR THE LIGHTER ELEMENTS OF IMPORTANCE INBIOLOGICAL SYSTEMS CAN BE EFFECTIVELY CALIBRATED BY COMPUTER, ELIMINATING MANY OF THE PROBLEMS ASSOCIATED WITH THE PRECISE CONTROL OF FILM THICKNESS. THE CONCEPT IS BASED ON COUPLING DIFFERENTIAL X-RAY FILTERS WITH A POSITION-SENSITIVE DETECTOR AND ON-LINE COMPUTER PROCESSING OF THE COUNT RATES TO PROVIDE A DIRECT READOUT OF ELEMENTAL COMPOSITION ON ANYTHING FROM A PERSONAL COMPUTER TO AN ARRAY OF DIGITAL PANEL METERS. THE PHASE I PROJECT WILL DEMONSTRATE THE FEASIBILITY OF USING DIFFERENTIAL FILTERS TO IDENTIFY AND QUANTIFY CHARACTERISTIC X-RAYS. IN PHASE II, THESE TECHNOLOGIES WILLBE BROUGHT TOGETHER TO DEVELOP A DIFFERENTIAL ABSORPTION X-RAY SPECTROSCOPY SYSTEM FOR IDENTIFYING CHARACTERISTIC X-RAYS AND QUANTIFYING THEIR INTENSITIES. THIS WILL RESULT IN A SIMPLE AND PORTABLE X-RAY ANALYSIS SYSTEM.

* information listed above is at the time of submission.

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