Rapid Spectral Filtering and Broadband Absorption for Dynamic Characterization of Metallized Detonation Fireballs
Abstract
Post-detonation fireball neutralization of chemical warfare agent (CWA) threats requires breakthrough development of low cost, high intensity, high speed diagnostic tools capable of probing the highly dynamic, optically dense multiphase combustion environment of a postdetonation fireball. The proposed, collaborative effort between Iowa State University (ISU) and the Naval Surface Warfare Center, Indian Head EOD Technology Division (NSWC-IH) aims to develop and implement a set of high dynamic range, high-brightness, MHz rate tools for the study of CWA decomposition occurring from detonations up to 22 kg (50 lb) TNTequivalence. Specifically, molecular filtered laser-based imaging will be developed, extending the dynamic range of high-speed cameras from 103 to 108 for dynamically exposed imaging of entire detonation/post-blast events. High brightness, supercontinuum absorption spectroscopy extending to the mid-IR will be developed to enable MHz-rate spatio-temporal determination of temperature and metal particle combustion by allowing access to metallic and non-metallic absorption features in the post-detonation environment. The proposed effort will develop and implement a suite of high-brightness diagnostics to explore CWA decomposition and the temperature/species environment of entire detonation/post-detonation events at sub-microsecond temporal resolution and will additionally enable the dynamic extension of high-speed imaging diagnostics to an unprecedented intensity range of 108, enabling development of lower cost, longer run-time, higher resolution replacements for X-ray based diagnostics in study of detonation / post-blast events.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 10, 2017
- Source ID
- HDTRA11710029
Entities
People
- James B Michael
Organizations
- Defense Threat Reduction Agency
- Iowa State University