DEVELOPMENT OF MULTILAYER SUPERMIRROR COATINGS FOR NEUTRON GUIDETUBES

Award Information
Agency: Department of Energy
Branch: N/A
Contract: N/A
Agency Tracking Number: 10802
Amount: $492,892.00
Phase: Phase II
Program: SBIR
Awards Year: 1990
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Ovonic Synthetic Materials Co
1788 Northwood, Troy, MI, 48084
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Mr James L Wood
 Principal Investigator
 (313) 280-1900
Business Contact
Phone: () -
Research Institution
N/A
Abstract
AT MANY NATIONAL LABORATORIES, IT IS HIGHLY DESIRABLE TO IMPROVE THE USE AND EFFICIENCY OF NEUTRON REACTOR FACILITIES. SEVERAL LABORATORIES HAVE PROPOSED IMPROVING THE QUALITY AND QUANTITY OF EXPERIMENTATION BY CHANNELING NEUTRONS TO REMOTE EXPERIMENTAL STATIONS VIA GUIDETUBES. THE ADVANTAGES OF THESE GUIDETUBE FACILITIES HAVE BEEN DEMONSTRATED IN EUROPE AND JAPAN. A MULTI-LAYERED THIN FILMCOATING, KNOWN AS A "SUPERMIRROR", CAN REPLACE NI COATINGS FOR SIGNIFICANTLY IMPROVED GUIDETUBE EFFICIENCY. FOR THE PAST DECADE, THERE HAS BEEN A GLOBAL RESEARCH EFFORT TO PRODUCE USEFUL GUIDETUBE SUPERMIRRORS. USE OF STANDARD VACUUM DEPOSITION TECHNIQUES HAS NOT BEEN SUCCESSFUL, APPARENTLY BECAUSE OF LAYER INSTABILITIES THAT ARE MATERIAL,SYSTEM, AND PROCESS RELATED. TO PRODUCE RELIABLE SUPERMIRROR PRODUCTS ON A LARGE SCALE, PROBLEMS OF CONTROLLING LAYER GROWTH MUST BE ADDRESSED. PROBLEMS THAT AFFECT LAYER UNIFORMITY INCLUDE CRYSTAL GROWTH, STRESS/STRAIN EFFECTS, AND FILM/SUBSTRATE ADHESION. PHASE IWILL USE STATE-OF-THE-ART DEPOSITION PROCESS TECHNIQUES TO INVESTIGATE METHODS FOR CONTROLLING THE LAYER DISTURBANCES ON SUBSTRATES OF A LIMITED SIZE. EACH METHOD WILL BE EVALUATED FOR ITS SUCCESS IN IMPROVING LAYERING QUALITY AND NEUTRON REFLECTIVITY. IN PHASE II, THE PREFERRED PROCESS WILL BE INVESTIGATED FOR OPTIMIZATION OF LARGE SCALE LAYER UNIFORMITY, YIELDS, AND DIFFERENT METHODS OF BATCH PROCESSING. THIS WILL BE THE BASIS FOR A PROPOSED BUSINESS PLAN IN PHASE III.

* information listed above is at the time of submission.

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