Planar laser induced fluorescence as a diagnostic for determining mass distribution in gas puff PRS loads

Award Information
Agency: Department of Defense
Branch: Defense Threat Reduction Agency
Contract: DTRA01-02-P-0260
Agency Tracking Number: T021-0127
Amount: $99,829.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Xsci-Tek, Inc.
24001 Swallowtail Drive, Laguna Niguel, CA, 92677
DUNS: 055378959
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Eusebio Garate
 Senior Scientist
 (949) 305-9818
 egarate@xsci-tek.com
Business Contact
 Yuanxu Song
Title: President
Phone: (949) 305-9818
Email: ysong@xsci-tek.com
Research Institution
N/A
Abstract
"Accurate diagnostics for determining the mass distribution in next generation DTRA gas puff loads are essential for increasing plasma radiation source (PRS) predictability, efficiency and yield. Recently, laser induced fluorescence (LIF) has been used todiagnose the mass distribution in gas puffs. Comparison between LIF using an acetone tracer and laser interferometry measurements on a DTRA argon gas puff assembly show good agreement at plenum pressures below 30 psia. At higher pressures the resultsdiverge with LIF yielding significantly higher density than interferometry measurements, possibly due to acetone clustering. In Phase I we will undertake planar laser induced fluorescence measurements on the previously diagnosed gas puff assembly but usingnitric oxide (NO) as the tracer. NO and argon have essentially the same boiling point so no questions about tracer clustering should arise. Comparisons between NO LIF, acetone LIF and laser interferometry will be carried out. The overall goal of the PhaseI and Phase II program is the development of a straightforwardly implemented LIF diagnostic that can be fielded in-situ on PRS systems to reliably, accurately and confidently diagnose the mass distribution of gas puff loads. The development of a reliable diagnostic for determining mass distribution in gas puff PRS loads could lead to substantial improvements in existing and future radiation source capability in terms of yield, power, and

* information listed above is at the time of submission.

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