The dynamics of Al/Pt reactive multilayer ignition via pulsed-laser irradiation
Abstract
Reactive multilayers consisting of alternating layers of Al and Pt were irradiated by single laser pulses ranging from 100 μs to 100 ms in duration, resulting in the initiation of rapid, self-propagating reactions. The threshold intensities for ignition vary with the focused laser beam diameter, bilayer thickness, and pulse length and are affected by solid state reactions and conduction of heat away from the irradiated regions. We used high-speed photography to observe ignition dynamics during irradiation and elucidate the effects of heat transfer into a multilayer foil. For an increasing laser pulse length, the ignition process transitioned from a more uniform to a less uniform temperature profile within the laser-heated zone. A more uniform temperature profile is attributed to rapid heating rates and heat localization for shorter laser pulses, and a less uniform temperature profile is due to slower heating of reactants and conduction during irradiation by longer laser pulses. Lastly, finite element simulations of laser heating using measured threshold intensities indicate that micron-scale ignition of Al/Pt occurs at low temperatures, below the melting point of both reactants.
- Authors:
-
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1338394
- Report Number(s):
- SAND2016-12661J
Journal ID: ISSN 0003-6951; 649949
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 107; Journal Issue: 23; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Heat conduction; Laser beam effects; Multilayers; Laser heating; Cameras
Citation Formats
Murphy, Ryan D., Reeves, Robert V., Yarrington, Cole D., and Adams, David P. The dynamics of Al/Pt reactive multilayer ignition via pulsed-laser irradiation. United States: N. p., 2015.
Web. doi:10.1063/1.4937161.
Murphy, Ryan D., Reeves, Robert V., Yarrington, Cole D., & Adams, David P. The dynamics of Al/Pt reactive multilayer ignition via pulsed-laser irradiation. United States. https://doi.org/10.1063/1.4937161
Murphy, Ryan D., Reeves, Robert V., Yarrington, Cole D., and Adams, David P. Mon .
"The dynamics of Al/Pt reactive multilayer ignition via pulsed-laser irradiation". United States. https://doi.org/10.1063/1.4937161. https://www.osti.gov/servlets/purl/1338394.
@article{osti_1338394,
title = {The dynamics of Al/Pt reactive multilayer ignition via pulsed-laser irradiation},
author = {Murphy, Ryan D. and Reeves, Robert V. and Yarrington, Cole D. and Adams, David P.},
abstractNote = {Reactive multilayers consisting of alternating layers of Al and Pt were irradiated by single laser pulses ranging from 100 μs to 100 ms in duration, resulting in the initiation of rapid, self-propagating reactions. The threshold intensities for ignition vary with the focused laser beam diameter, bilayer thickness, and pulse length and are affected by solid state reactions and conduction of heat away from the irradiated regions. We used high-speed photography to observe ignition dynamics during irradiation and elucidate the effects of heat transfer into a multilayer foil. For an increasing laser pulse length, the ignition process transitioned from a more uniform to a less uniform temperature profile within the laser-heated zone. A more uniform temperature profile is attributed to rapid heating rates and heat localization for shorter laser pulses, and a less uniform temperature profile is due to slower heating of reactants and conduction during irradiation by longer laser pulses. Lastly, finite element simulations of laser heating using measured threshold intensities indicate that micron-scale ignition of Al/Pt occurs at low temperatures, below the melting point of both reactants.},
doi = {10.1063/1.4937161},
journal = {Applied Physics Letters},
number = 23,
volume = 107,
place = {United States},
year = {Mon Dec 07 00:00:00 EST 2015},
month = {Mon Dec 07 00:00:00 EST 2015}
}
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Works referencing / citing this record:
SHS in Ni/Al Nanofoils: A Review of Experiments and Molecular Dynamics Simulations
journal, April 2018
- Baras, Florence; Turlo, Vladyslav; Politano, Olivier
- Advanced Engineering Materials, Vol. 20, Issue 8
Engineering of Al/CuO Reactive Multilayer Thin Films for Tunable Initiation and Actuation
journal, May 2018
- Rossi, Carole
- Propellants, Explosives, Pyrotechnics, Vol. 44, Issue 1
A diffusion-limited reaction model for self-propagating Al/Pt multilayers with quench limits
journal, April 2018
- Kittell, D. E.; Yarrington, C. D.; Hobbs, M. L.
- Journal of Applied Physics, Vol. 123, Issue 14