Award Data

High-resolution scintillation crystals and crystal arrays are important components of current and future handheld and arrayed detectors (used for DOD/DTRA applications), and scintillation spectrometers (routinely used in high energy physics research, medical imaging, diffraction, homeland security, nuclear waste clean-up, nuclear treaty verification and safeguards, and geological exploration). Un ...

Until now gamma radiation detection has required large single crystals of sensitive materials that are difficult to produce consistently on an industrial scale. In collaboration with a research group at the University of Texas at Arlington, Agiltron proposes to develop a new class of nanocomposite scintillator materials. The radiation detection characteristics of the synthetic nanoparticles in the ...

IN THE LAST TWO YEARS, THERE HAVE BEEN INCREASING CONCERNS ABOUT THE POTENTIALLY LARGE COOLING OF THE LAND SURFACE TEMPERATURE RESULTING FROM THE SOOT AND DUST INJECTED INTO THE ATMOSPHERE BY THE EXPLOSIONS AND SECONDARY FIRES FROM NUCLEAR EXCHANGES, THE SO-CALLED "NUCLEAR WINTER" SCENARIOS. HERE WE ARGUE THAT, IN ADDITION TO DUST AND SOOT, A LARGE NUMBER OF TRACE GASES (NO[X], H[2]0, HC, CH[4]) C ...

IMPULSE RADAR WHICH DERIVES ITS "MAIN BANG", A TRANSIENT, BY EXCITING AN ANTENNA CAVITY WITH A SUBNANOSECOND PULSE HAS BEEN SHOWN TO BE VERY EFFECTIVE FOR INTRUSION DETECTION. A RECENT SBIR PROGRAM COMPLETED FOR DNA RESULTED IN THE DEVELOPMENT OF A NEW LOW COST, LIGHT WEIGHT, RADAR SENSOR FOR THE PROTECTION OF NUCLEAR SITES NOW BEING MARKETED COMMERCIALLY. DURING THE DNA FIELD EXPERIMENTS ON ANIMA ...

A batteryless and wireless sensor for intrusion detection and assessment of threats which requires no battery, external power or wiring is proposed. These types of sensors derive energy from passing vehicles or persons, and indicate their presence, location, speed, etc., via a self-generated short-range radio signal. These sensors require no maintenance, and can be inconspicuously placed in window ...

THE GOAL OF THIS PHASE I EXPERIMENTAL EFFORT IS TO DEMONSTRATE THE FEASIBILITY OF USING AN OPTICAL GLASS AS A SENSING ELEMENT FOR VERY HIGH PRESSURE MEASUREMENTS. CURRENTLY, PIEZO-ELECTRIC GAUGES ARE TYPICALLY USED. AS THESE SENSORS ARE ELECTRICAL IN NATURE, THEY ARE ADVERSELY AFFECTED BY ELECTROMAGNETIC INTERFERENCE (EMI) WHICH IS CREATED IN A NUCLEAR EVENT. THE PROPOSED FIBER OPTIC SENSOR BASED ...

20 TON SPHERICAL EXPLOSIVE CHARGES MADE FROM MOLDABLE EXPLOSIVES HAVE BECOME INCREAINGLY IMPORTANT TO DNA'S ABOVEGROUND TEST PROGRAMS. THESE CHARGES PROVIDE LONGER DURATION FREE FIELD PRESSURE SIGNALS THAN CAN BE PRODUCED IN THE UNDERGROUND TEST ENVIRONMENT. THE SAFETY OF MANUFACTURING THESE 20 TON SPHERICAL CHARGES COULD BE GREATLY ENHANCED THROUGH THE DEVELOPMENT OF FIBER OPTIC BASED INSTRUMENTA ...

FIBER OPTICE ELECTRIC FIELD MEASUREMENT SYSTEMS OFFER ELECTROMAGNETIC PULSE AND ELECTROMAGNETIC INTERFERENCE IMMUNITY THAT IS NOT PROVIDED BY STANDARD ELECTRON BASED INSTRUMENTATION. TO DATE FIBER OPTIC BASED ELECTRIC FIELD MEASUREMENT SYSTEMS HAVE BEEN USED MOSTLY IN ABOVEGROUND TEST APPLICATIONS. IN THE UNDERGROUND TEST ENVIRONMENT, SENSORS ARE EXPOSED TO A HARSH RADIATION ENVIRONMENT. TECHNIQUE ...

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