Award Data

Alameda Applied Sciences Corporation proposes to develop and test a capillary discharge source of KCl as an alternative to Ar gas puffs for Decade Quad. The innovative feature of such a capillary source is that the initial z-pinch load is highly ionizedand well collimated, as demonstrated earlier with a NaF source on Gamble II and Double-EAGLE (DE). Consequently, the stability and radiation effici ...

Alameda Applied Sciences Corporation (AASC) proposes to adapt a commercially available instrument called a Laser Wavefront Analyzer (LWA) to capture snap-shots of the current and density in the initial coronal region of an imploding z-pinch on the 0.7 MAHawk accelerator at NRL. These snap-shots will reveal the structure of instabilities in the formation of the pinch and allow us to correlate impro ...

A six-month Phase I project is proposed to demonstrate the feasibility of a hierarchical method for more accurately estimating the material parameters of constitutive models in DYNA3D, thereby enhancing the fidelity of nonlinear finite element models. Thehierarchical approach combines the distinct advantages of coupon, component and system-level testing with Bayesian statistical parameter estimat ...

BMDO and the Services have the requirement to certify some of their military assets as being survivable against the effects of prompt X-rays from nuclear weapons. This certification is generally accomplished by a combination of testing the assets directlyfor their survivability at DTRA's X-ray simulators, and by modeling and simulation. Both the development of X-ray simulators and benchmarking com ...

Locating and discriminating explosions from earthquakes become progressively moredifficult as magnitude decreases. We can no longer rely on teleseismic identificationfor events at about Mw

Science based assessments of the response of systems and material to hostile nuclear environments require detailed verified material response and failure criteria for confident results. Consequently there is a need for the development of experimentaltechniques to measure low pressure equation of state parameters accurately and economically using radiation simulators. The development of a soft x- ...

The measurement of the variation of fluence from a Plasma Radiating Source (PRS) with polar angle is critical to the definition of the stimuli acting on an effects experiment using PRS diagnostics because in general experiments and diagnostics view thesource from different angles. The polar angle fluence distribution is controlled by the opacity of the pinch, which is a sensitive function of pinc ...

Present reflex triode (RT) design performance is limited by debris shield response. The shield designs were derived empirically to satisfy specific experiment requirements. Optimizing the RT design will double target dose. Debris shield deformation definesthe closest permissible location of the test object and therefore determines the maximum dose achievable. The deformation of the debris shield c ...

Survivable shields are a necessary part of many soft x-ray debris mitigation systems that provide ultra clean test environments for nuclear weapons effects testing. Existing test requirements demand ultra large area survivable shields (12 inch diameter).Existing designs are limited to relatively small areas at low fluences and/or impose severe x-ray attenuation penalties. A methodology for the d ...

Many NMD and TMD radar algorithms are designed with inherent assumptions about the amplitude statistics of the radar returns from objects under observation. These algorithms include mission critical bulk filtering and classification algorithms. In awartime environment, the observed amplitude fluctuations will be due not only to fluctuations in the target radar cross section (RCS), which the rada ...