Nonlinear electromagnetic interactions in energetic materials

Wood, Mitchell Anthony; Dalvit, Diego Alejandro; Moore, David Steven

doi:10.1103/PhysRevApplied.5.014004

Title: Nonlinear electromagnetic interactions in energetic materials

Journal Article · Tue Jan 12 00:00:00 EST 2016 · Physical Review Applied

DOI:https://doi.org/10.1103/PhysRevApplied.5.014004· OSTI ID:1304812

Wood, Mitchell Anthony ^[1]; Dalvit, Diego Alejandro ^[2]; Moore, David Steven ^[3]

Purdue Univ., West Lafayette, IN (United States). School of Materials Engineering and Birck Nanotechnology Center; Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Division
Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Division
Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Explosive Science and Shock Physics Division

We study the scattering of electromagnetic waves in anisotropic energetic materials. Nonlinear light-matter interactions in molecular crystals result in frequency-conversion and polarization changes. Applied electromagnetic fields of moderate intensity can induce these nonlinear effects without triggering chemical decomposition, offering a mechanism for the nonionizing identification of explosives. We use molecular-dynamics simulations to compute such two-dimensional THz spectra for planar slabs made of pentaerythritol tetranitrate and ammonium nitrate. Finally, we discuss third-harmonic generation and polarization-conversion processes in such materials. These observed far-field spectral features of the reflected or transmitted light may serve as an alternative tool for standoff explosive detection.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396; N00014-11-0466

OSTI ID:: 1304812

Alternate ID(s):: OSTI ID: 1235757

Report Number(s):: LA-UR-15-27584

Journal Information:: Physical Review Applied, Vol. 5, Issue 1; ISSN 2331-7019

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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References (17)

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