Award Data

FOR THE CLASS OF DNA NUCLEAR WEAPONS EFFECTS SIMULATOR KNOWN AS THE PLASMA RADIATING SOURCE (PRS), HIGH RESOLUTION X-RAY SPECTROSCOPY DIAGNOSTIC MEASUREMENTS PROVIDE CRITICAL INFORMATION BOTH FOR CHARACTERIZATION OF THE TEST-OBJECT RADIATION ENVIRONMENT AND FOR OPTIMIZATION OF THE SOURCE. PRESENT PRS HIGH RESOLUTION X-RAY SPECTROMETERS RECORD DATA ON PHOTOGRAPHIC FILM, THE PROCESSING AND ANALYSIS ...

COMMERCIAL SAPPHIRE SURFACES CONTAIN BURIED DAMAGE WHICH HAS A DELETERIOUS INFLUENCE ON SOS LAYERS GROWN THEREON. THE DEFECTS IN THE SILICON LAYERS RESULT IN A REDUCED YIELD OF DEVICES AND PERFORMANCE LIMITATIONS. MUCH OF THE DAMAGE IN THE SAPPHIRE SURFACE IS PRODUCED BY THE POLISHING STEP, WHICH EMPLOYS AN ABRASIVE PAD IN CONTACT WITH THE SAPPHIRE SURFACE. AN IMPROVED POLISHING PROCESS HAS BEEN E ...

SINCE 1975, THE USAF HAS DEVELOPED THROUGH ITS FUZING BRANCH, EGLIN AFB, A NEW CLASS OF PROXIMITY DETECTORS KNOWN AS BASEBAND REFLECTOMETER (BAR) SYSTEMS. IN ADDITION TO HAVING EXCELLENT RESOLUTION (E.G.LESS THAN A FOOT), BAR SYSTEMS HAVE BEEN MADE IMMUNE TO MANY FORMS OF JAMMING AND HAVE BEEN USED AS ALTIMETERS IN TARGET ACTIVATED MUNITIONS(TAM) APPLICATIONS AS WELL AS SENSORS FOR PROXIMITY FUZES ...

A FIBER OPTIC PRESSURE SENSOR BASED ON THE PHOTOELASTIC EFFECT IS DISCUSSED. DUE TO INTRINSIC IMMUNITY TO ELECTROMAGNETIC INTERFERENCE,THE FIBER OPTIC SENSOR OFFERS THE PROMISE OF FUNDAMENTAL IMPROVEMENT RELIABILITY. A POLARIMETRIC SENSING TECHNIQUE MINIMIZES THE EFFECTS OF RADIATION DAMAGE TO FIBERS. THE SENSOR EXPLOITS THE CHANGES IN INDEX OF REFRACTION PRODUCED BY STRESS IN PHOTOELASTIC MATERIA ...

AN IMPROVED TECHNIQUE FOR MEASURING THE FRONT-SURFACE TEMPERATURE OF SAMPLES BEING TESTED AT THE TRI-SERVICES THERMAL RADIATION TEST FACILITY, WRIGHT-PATTERSON AFB, IS PROPOSED. THE NEW METHOD WILL BE DESIGNED TOTAKE ADVANTAGE OF THE SPECTRAL CHARACTERISTICS OF THIS FACILITY. RADIATION PYROMETRY HAS BEEN SELECTED AS THE ONLY VIABLE TECHNIQUE THAT CAN PROPERLY MEASURE THE SURFACE TEMPERATURE BECAUS ...

THIS PROJECT WILL PRODUCE THE RESULTS NECESSARY TO DETERMINE IF ULTRHIGH TEMPERATURE FUELS PRODUCE FLAMES WITH SUFFICIENT EMISSIVITY TO BE CONSIDERED AS A CANDIDATE FOR THE DNA THERMAL RADIATION SOURCE TEST FACILITY. A SMALL TORCH WILL BE CONSTRUCTED WHICH WILL BURN COMMERCIALLY AVAILABLE CHEMICALS SIMILAR TO ULTRA-HIGH TEMPERATURE FUELS OF THE CMNN CLASS. THERMAL FLUX AND SPECTRAL MEASUREMENTS OF ...

THE RADIOBIOLOGICAL EFFECTS FROM INITIAL AND LINGERING AIRBORNE AND SURFACE FALLOUT NUCLEAR RADIATION ARE KEY CONSIDERATIONS FOR CONUS POSTATTACT STRATEGIC RECOVERY OPERATIONS PLANNING. IN THIS PROPOSED EFFORT WE INTEND TO APPLY THE KNOWLEDGE GAINED FROM THE DNA INTERME DIATE DOSE PROGRAM (IDP) AND PROVIDE A TIMELY UPDATE OF THE SCOPE OF RADIOBIOLOGICAL EFFECTS ON INDIVIDUALS ASSUMING VARIOUS ROLE ...

IT HAS BEEN SUGGESTED THAT MOST NUCLEAR WARS IMAGINED WOULD CAUSE DECREASED SOLAR ENERGY AT THE GROUND OVER MUCH OF THE WORLD AND THAT THE SMOKE AND DUST CAUSING THE SUNLIGHT ATTENUATION WOULD PERSIST FOR MONTHS TO YEARS. THE ASSUMPTIONS INVOKED IN REACHING SUCH ESTIMATED EFFECTS ARE SUBJECT TO GREAT UNCERTAINTY AND MERIT MORE ATTENTION. WE PROPOSE TO PROVIDE INDEPENDENT BEST ESTIMATES OF MEAN VAL ...

A LASER MICROPROBE FOR ANALYZING LASER PRODUCED MATERIAL BLOWOFF FROM BULK MATERIALS IS TO BE DEVELOPED. MOST WORK ON LASER-TARGET AND LASER-SURFACE INTERACTIONS HAS CONCENTRATED ON THE DEVELOPMENT OF DIAGNOSTICS AND PROBES FOR MEASURING PHYSICAL PROPERTIES OF THE PLASMA PRODUCED FROM PELLETS, THIN FILM TARGETS, AND BULK MATERIALS. LITTLE WORK HAS BEEN DONE TO ANALYZE THE MATERIAL BLOWOFF. WE SHAL ...

INVESTIGATE POTENTIAL OF A NOVEL CONCEPT TO GENERATE SPECIFIC WAVELENGTH REGIONS OF HIGH INTENSITY RADIATION AND/OR PLANAR BLAST WAVES TO PRODUCE, ON CLOSE-BY (TARGET) STRUCTURES AND/OR MATERIALS, THE THERMAL AND/OR SHOCK LOADINGS DELIVERED BY SINGLE PULSE OR REPETITIVE PULSE LASERS. THE CONCEPT, IF SUCCESSFUL, COULD APPLY OVER LARGE (ONE FOOT OR MORE) DIAMETER AREAS ON LARGE, SCALABLE STRUCTURES/ ...