Award Data

Certain lanthanide halides have significantly higher light output than NaI:Tl, the comparison standard for scintillators, plus other important properties, including fast decay times and excellent proportionality. Unfortunately, lanthanide halides grown by traditional melt processes have high production costs and limited availability. Crystals are usually limited to about 5 cm x 5 cm, right cylinde ...

It is proposed to develop a novel process for growth of high quality CZT crystals for nuclear detection applications. Currently the THM process is the technology of choice for production of high quality CZT crystals. This process, however, suffers from extremely low growth rates. The development effort proposed here will seek to increase the crystal growth rate by 5-10 times the current levels ...

Three nuclides are especially useful in detecting thermalized neutrons: helium-3, lithium-6 , and boron-10. Since current demand will deplete reserves of helium-3 in roughly two years, there is a large desire to develop detectors that have the capacity to replace helium-3 tubes. In this proposal we spell out our plan to adapt Neotron''s already developed fission neutron detector into a high effic ...

COMPUTER MEMORY ARRAYS ARE EXTREMELY VULNERABLE TO ELECTROMAGNETIC DISTURBANCES RESULTING FROM ACCIDENTAL OR HOSTILE ACTIONS. HARDENING AGAINST SUCH EFFECTS CAN BE IMPARTED EITHER BY ADDING EXTERNAL PROTECTION TO EXISTING SYSTEMS OR BY INCORPORATING SURVIVABILITY IN NEW DESIGNS. INHERENT HARDNESS CAN BE IMPARTED TO RANDOM ACCESS MEMORY ARRAYS BY USING THIN FILM FERROELECTRIC MATERIALS AS MEMORY EL ...

CONVENTIONAL INSTRUMENTATION FOR AIRBLAST PRESSURE MEASUREMENTS IN CAVITY SHOTS IS LIMITED IN RISE TIME CAPABILITY. THIS RESULTS IN THE INSTRUMENTATION PROVIDING AN INCORRECT INDICATION OF PEAK PRESSURE, WHICH CREATES DISTORTION IN GENERATED HEIGHT-OF-BURST CURVES. THE DEVELOPMENT OF A FIBER OPTIC AIRBLAST PRESSURE SENSOR BASED ON THE PHOTOELASTIC EFFECT IS PROPOSED. THIS TECHNIQUE PROMISES TO PRO ...

SIMOX MATERIAL IS RAPIDLY BECOMING THE SOI MATERIAL OF CHOICE FOR MANY IC APPLICATIONS, INCLUDING RADIATION HARDENED. A CONSTANT THEME OF CONCERN THROUGHOUT THE DEVELOPMENT OF THIS TECHNOLOGY HAS BEEN THE METALLIC IMPURITY CONTENT IN THE MATERIAL. MAJOR EFFORTS HAVE ADDRESSED THE ELIMINATION OF THE METALLIC CONTAMINATION BY MODIFICATION OF THE IMPLANTATION EQUIPMENT USED TO FABRICATE SIMOX MATERIA ...

A PROGRAM IS PROPOSED TO EVALUATE THE IMPACT OF CHANNELING OF OXYGEN ON BURIED OXIDE XNTEGRITY IN SIMOX MATERIAL. BURIED OXIDE PINHOLEDENSITY AND CRYSTALLOGRAPHIC ORIENTATION RELATED PATTERNS IN BURIED OXIDE PINHOLE MAPS WILL BE EXPLAINED DEPENDING UPON THE IMPLANT ANGLE. THE METHOD BASED ON THE ELECTROYTIC PLATING OF COPPER WILL BE USED TO OBTAIN THE MAPS OF PINHOLES. THIS WORK WILL IMPROVE KNOWL ...

IT IS PROPOSED TO DESIGN, BUILD AND TEST A NOVEL SUITE OF XUV AND X-RAY MEASURING INSTRUMENTS FOR RADIATION FROM X-PINCHES. THIS SUITE WILL OFFER SPACE AND TIME RESOLUTION AND COVER EMISSIONS OVER THE ENTIRE COURSE OF THE IMPLOSION, FROM XUV (100-500 EV) TO SFT X-RAYS (1-10KEV). THE SUITE CONSISTS OF AN X-RAY CRYSTAL SPECTROMETER, AN X-RAY PINHOLE CAMERA AND AN XUV PINHOLE CAMERA. THE BASIC DETECT ...

IT IS PROPOSED TO USE A SENSITIVE LASER PROBE BEAM TO MEASURE, VIA BEAM REFRACTION AND FARADAY ROTATION, THE PLASMA DENSITIES AND MAGNETIC FIELDS (HENCE CURRENT PROFILES) AROUND HIGH CURRENT Z-PINCHES. DURING PHASE I, A SIMPLE VERSION OF THE PROPOSED LASER METROLOGY TOOL, USING MANY COMPONENTS ALREADY AVAILABLE AT SRL, WILL BE VALIDATED BY MEASURING THE -0.5 MA CURRENTS (100-300 T MAGNETIC FIELDS) ...

THE PROPOSED FIBLOC SENSOR PROVIDES AN ECONOMIC MEANS TO PROTECT, LITERALLY, MILES OF A PREFERRED PERIMETER REGION AGAINST UNAUTHORIZED INTRUSIONS. THE OPTICAL FIBERS EMPLOYED INT HE FIBLOC SENSOR PROPAGATE CW OR PULSED INFRARED LIGHT SIGNALS WHOSE TRANSMISSION AND/OR REFLECTION SENSITIVITY IS AFFECTED BY MECHANICAL PRESSURE SUCH AS WOULD BE PRODUCED BY THE DISTENSION OF SURFACED MOUNTED FIBERS AL ...