Urban Area Blast Wave Analysis using a Hierarchical, Solution-based, Adaptive Mesh Refinement Technique

Award Information
Agency: Department of Defense
Branch: Defense Threat Reduction Agency
Contract: DTRA01-01-P-0179
Agency Tracking Number: T011-0019
Amount: $99,986.00
Phase: Phase I
Program: SBIR
Awards Year: 2001
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
104 Centre Ct., Radford, VA, 24141
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Edward Yadlowsky
 (540) 639-4019
Business Contact
 Edward Yadlowsky
Title: President
Phone: (540) 639-4019
Email: eyadlowsky@hytechresearch.com
Research Institution
The magnetic field distribution in a Z-pinch, can be used to infer the currentsflowing in the pinch and study the stability during the implosion phase. Faradayrotation techniques are too insensitive for measurements during the run-in phase.Similarly, it is difficult to infer the Zeeman splitting from spectrally resolvedline profile when the splitting is much less than the absorption line width d.HY-Tech proposes to adapt an astrophysical technique, to infer the Zeeman splittingfrom the intensity difference of the right and left circularly polarized componentsobserved along the magnetic field lines. Measurements are made with a monochrometerset for a single wavelength, d/2 from line center, and a polarimeter to spatially separate the two circularly polarizedcomponents. This system can be used to spatially resolve the magnetic fielddistribution in one dimension (either radially or axially) as a function of timeusing a streak camera. The anticipated 20 point spatial resolution combined withoptical magnification will be adequate for studying the Rayleigh-Taylor and otherinstabilities in the imploding sheath, current commutation between the inner andouter arrays in a nested load, and load currents in magnetic pulse compressionexperiments.Can be used to measure space and time resolved magnetic fields in plasma radiationsources, ion diode and plasma opening switches to study physical processes occurringthere. Also a time resolved version can be used as a non-intrusive current monitor.

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