Award Data

To fully understand the combustion dynamics when chemical warfare agents are detonated, fast time-scale diagnostics are needed. While computational modeling may provide insight into the different processes, experimental measurements are needed to verify and validate these models. Since the detonation or combustion of chemical agents can result in optically thick fireballs, innovative techniques mu ...

With the advent of high-density low-power sub-20nm technology processes and circuits with tens-of-billions of transistors, radiation-induced single-event effects present a new set of design challenges for terrestrial applications. Developing reliable single-event effect resilient microelectronics in these modern technology nodes is a resource and time-intensive endeavor that further requires valid ...

Terrorist use of radioactive nuclear materials via nuclear and/or radiological dispersion devices (dirty bombs) is a serious threat. Therefore, it is crucial to detect proliferation of nuclear material. Critical challenges include: (a) high sensitivity detection of signature emissions from radioactive isotopes, and (b) cost-effectiveness for deployment of sensor networks across large storage facil ...

TDA Research, Inc. (TDA), designed, built, and tested a dense array of 100 very low cost infrasonic sensors. Due to their low cost (1/100x-1/10x the cost of other infrasound sensors), they can be economically deployed in very large numbers; such large arrays can gather more information than a few expensive sensors. They are sensitive from 0.1 Hz - 100 Hz down to 0.08 Pa. We tested the sensors in s ...

Reliable automated pattern recognition in the current system is limited by excessive noise and clutter combined with insufficient and/or ambiguous features. Our team consisting of AcornSI and Leidos thus propose a multi-step approach based on the combined effects of improved detection, feature extraction, phase identification, and global association. A key innovation here is creating a new classif ...

During the Phase I effort, Semandex Networks and its team developed a prototype capability to detect trends in research publications by automatically identifying emerging concepts within the data. The implemented capability provides insights into past and

THE ADVANCE OF TECHNOLOGIES MAY MAKE DEFENSE AGAINST BALLISTIC MISSLES TECHNICALLY AND ECONOMICALLY FEASIBLE. A NATIONAL POLICY DEBATE HAS BEGUN ON THE DESIRABILITY OF MAKING A TRANSITION FROM STRATEGIC DETERRANCE TO STRATEGIC DEFENSE. THE DEBATE IS AT PRESENT HIGHLY CONFUSING AND UNSTRUCTURED, SINCE THE VARIOUS ARGUMENTS FOR AND AGAINST THAT TRANSITION ARE BASED ON DIFFERING ASSUMPTIONS, OFTEN TA ...

In this project, we propose to identify and examine solution growth approaches for engineering perovskite single crystal for gamma spectrometry in a hand-held sensor format. We will demonstrate that the solution growth approach is able to produce perovskite single crystal in sufficient volume and quality to yield a detector crystal whose utilization presents no inherent environmental, health, or s ...

ESTABLISH DESIGN CRITERIA FOR, AN OPTICAL PROBE TO MEASURE THE DUST LOFTED BY THE SHOCK WAVE DURING A NUCLEAR BLAST WAVE SIMULATION. DUST DENSITY IS DETERMINED FROM THE REDUCTION IN INTENSITY OF LIGHT PROJECTED OVER AN INTERROGATION PATH TRANSVERSE TO THE FLOW. USE OF A SIMPLE LIGHT SOURCE AND DETECTOR WITH FIBER OPTIC TRANSMISSION LINES PRODUCES AN INEXPENSIVE RUGGED INSTRUMENT WHICH CAN BE DEPLO ...

The Radionuclide Aerosol Sampler and Analyzer (RASA) is a completely automated monitoring system that detects airborne radioactive particles and is one of the detection systems used in the U.S. and global International Monitoring System (IMS) of the Comprehensive Nuclear Test Ban Treaty Organization (CTBTO) to detect nuclear detonations. Mainstream proposes develop a high-efficiency cyclone separa ...