Award Data

ION SOURCES BASED ON VACUUM ARC TECHNOLOGY HAVE SEVERAL IMPORTANT ADVANTAGES. THEY CAN GENERATE A WIDE VARIETY OF METAL IONS, PRODUCE HIGH CURRENT FRACTIONS OF MULTIPLY-CHARGED IONS, AND ARE EASY TO OPERATE. UNFORTUNATELY, EXISTING ARC SOURCES HAVE TECHNOLOGICAL DRAWBACKS. A STABLE DISCHARGE REQUIRES HIGH CURRENT (>200A), LIMITING THE SOURCE PULSE LENGTH AND LIFETIME. IN THIS PHASE I PROJECT, IMPR ...

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A PRIMARY LIMITATION OF PHOTOELECTROCHEMICAL CELLS IS PHOTOCORROSION OF ELECTRODE MATERIALS. ONE SOLUTION TO THISPROBLEM HAS BEEN TO APPLY ELABORATE CONDUCTING POLYMERIC COATINGS TO SENSITIVE ELECTRODES. AN ALTERNATIVE IS TO USE CORROSION RESISTANT ELECTRODE MATERIALS. GROUP VI METAL DICHALCOGENIDES, AND TUNGSTEN DISELENIDE (WSE2) IN PARTICULAR, HAVE SHOWN PROMISE AS INTRINSICALLY CORROSION RESIST ...

A NOVEL DIAMOND DETECTOR FOR USE IN THE SOFT X-RAY TO THE VACUUM ULTRAVIOLET IS PROPOSED. THIS X-RAY DETECTOR IS BASED ON THE USE OF A DIAMOND FILM AS THE ACTIVE DETECTOR ELEMENT DUE TO DIAMOND'S HIGH INTRINSIC RESISTIVITY (LOW DARK CURRENT), LARGE CARRIER MOBILITIES, HIGH SATURATEDCARRIER DRIFT VELOCITY AND RADIATION AND CHEMICAL CORROSION RESISTANT CHARACTERISTICS. BECAUSE OF THESE CHARACTERISTI ...

THE USE OF SUPERCONDUCTING RADIO FREQUENCY (SRF) CAVITIES IN ELECTRON ACCELERATORS CAN BE DRAMATICALLY EXTENDED WITH THE UTILIZATION OF HIGH TEMPERATURE SUPERCONDUCTORS (HTSC). WITH CRITICAL MAGNETIC FIELDS OF APPROXIMATELY 11,000 OE AT 2K OR 4 TIMES NIOBIUM, HTSCS OFFER THE POTENTIAL OF ACCERLERATING FIELDS OF 200 MEV/M WHICH WOULD SIGNIFICANTLY IMPROVE THE PERFORMANCE OF ELECTRON AND HEAVY ION L ...

SOLID-STATE IONIZATION DETECTORS INCREASINGLY FIND USE IN MEDICAL, NUCLEAR, AND HIGH ENERGY PHYSICS AND IN MAGNETIC FUSION RESEARCH. UNFORTUNATELY, SILICON-BASED DETECTORS ARE HIGHLY SUSCEPTIBLE TO RADIATION DAMAGE, CAN OPERATE ONLYIN A NARROW TEMPERATURE REGIME, AND HAVE UNDESIRABLE SIGNAL-TO-NOISE RATIOS EVEN AT ROOM TEMPERATURE. A NEW CLASS OF RADIATION-RESISTANT, HIGH TEMPERATURE DETECTORS BAS ...

SYNCHROTRON RADIATION FACILITIES ARE BEING USED INCREASINGLYFOR ADVANCED MATERIALS RESEARCH. THE EFFECTIVENESS OF THIS RESEARCH IS NOW COMPROMISED BY A SHORTAGE OF SUITABLE CRYSTALS TO MAKE DEVICES FOR LONG WAVELENGTH SPECTROSCOPY INTHE SOFT X-RAY REGION OF 6 TO 30 ANGSTROM. THE CRYSTAL, YTTRIUM BORIDE (YB66), HAS BEEN IDENTIFIED AS A POTENTIAL MONOCHROMATOR FOR DISPERSING SYNCHROTRON RADIATION. K ...

33 Nondestructive Measurements of Key Mechanical Properties of Alloy 718 Welded Structures Using Novel Stress-Strain Microprobe Technology--Advanced Technology Corporation, 661 Emory Valley Road, Suite A, Oak Ridge, TN 37830-7751; (423) 483-5756 Mr. Fahmy M. Haggag, Principal Investigator Mr. Fahmy M. Haggag, Business Official DOE Grant No. DE-FG02-97ER82316 Amount: $75,000 Nickel-based super ...

116 High Brightness LEDs based on the (Al, Ga,In)N Materials System--Advanced Technology Materials, Inc., 7 Commerce Drive, Danbury, CT 06810-4131; Dr. Karim Boutros, Principal Investigator Dr. Duncan W. Brown, Business Official DOE Grant No. DE-FG02-97ER82319 Amount: $75,000 Based on a combination of physical, electronic and optical properties, the semiconductor materials system (aluminum, g ...

76 Micromachined SiC Sensors For Harsh Environment Applications--Advanced Technology Materials, Inc., 7 Commerce Drive, Danbury, CT 06810-4131; (203) 794-1100 Dr. Gary M. Smith, Principal Investigator Dr. Duncan W. Brown, Business Official DOE Grant No. DE-FG02-97ER82317 Amount: $75,000 Many industries are increasing their use of environmental sensors to improve system efficiency, safety, and ...