skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Ultrafast Shock-Induced Reactions in Pentaerythritol Tetranitrate Thin Films

Abstract

The chemical and physical processes involved in the shock-to-detonation transition of energetic solids are not fully understood due to difficulties in probing the fast dynamics involved in initiation. Here, we employ shock interferometry experiments with sub-20-ps time resolution to study highly textured (110) pentaerythritol tetranitrate (PETN) thin films during the early stages of shock compression using ultrafast laser-driven shock wave methods. We observe evidence of rapid exothermic chemical reactions in the PETN thin films for interface particle velocities above ~1.05 km/s as indicated by shock velocities and pressures well above the unreacted Hugoniot. The time scale of our experiment suggests that exothermic reactions begin less than 50 ps behind the shock front for these high-density PETN thin films. Thermochemical calculations for partially reacted Hugoniots also support this interpretation. Finally, the experimentally observed time scale of reactivity could be used to narrow possible initiation mechanisms.

Authors:
 [1];  [2];  [1];  [2];  [1];  [1];  [2];  [3]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1485824
Alternate Identifier(s):
OSTI ID: 1497278
Report Number(s):
SAND-2018-11358J; LLNL-JRNL-747961
Journal ID: ISSN 1089-5639; 669458
Grant/Contract Number:  
AC04-94AL85000; AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physical Chemistry. A, Molecules, Spectroscopy, Kinetics, Environment, and General Theory
Additional Journal Information:
Journal Volume: 122; Journal Issue: 41; Journal ID: ISSN 1089-5639
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Park, Samuel D., Armstrong, Michael R., Kohl, Ian Thomas, Zaug, Joseph M., Knepper, Robert, Tappan, Alexander S., Bastea, Sorin, and Kay, Jeffrey J. Ultrafast Shock-Induced Reactions in Pentaerythritol Tetranitrate Thin Films. United States: N. p., 2018. Web. doi:10.1021/acs.jpca.8b05387.
Park, Samuel D., Armstrong, Michael R., Kohl, Ian Thomas, Zaug, Joseph M., Knepper, Robert, Tappan, Alexander S., Bastea, Sorin, & Kay, Jeffrey J. Ultrafast Shock-Induced Reactions in Pentaerythritol Tetranitrate Thin Films. United States. doi:10.1021/acs.jpca.8b05387.
Park, Samuel D., Armstrong, Michael R., Kohl, Ian Thomas, Zaug, Joseph M., Knepper, Robert, Tappan, Alexander S., Bastea, Sorin, and Kay, Jeffrey J. Mon . "Ultrafast Shock-Induced Reactions in Pentaerythritol Tetranitrate Thin Films". United States. doi:10.1021/acs.jpca.8b05387. https://www.osti.gov/servlets/purl/1485824.
@article{osti_1485824,
title = {Ultrafast Shock-Induced Reactions in Pentaerythritol Tetranitrate Thin Films},
author = {Park, Samuel D. and Armstrong, Michael R. and Kohl, Ian Thomas and Zaug, Joseph M. and Knepper, Robert and Tappan, Alexander S. and Bastea, Sorin and Kay, Jeffrey J.},
abstractNote = {The chemical and physical processes involved in the shock-to-detonation transition of energetic solids are not fully understood due to difficulties in probing the fast dynamics involved in initiation. Here, we employ shock interferometry experiments with sub-20-ps time resolution to study highly textured (110) pentaerythritol tetranitrate (PETN) thin films during the early stages of shock compression using ultrafast laser-driven shock wave methods. We observe evidence of rapid exothermic chemical reactions in the PETN thin films for interface particle velocities above ~1.05 km/s as indicated by shock velocities and pressures well above the unreacted Hugoniot. The time scale of our experiment suggests that exothermic reactions begin less than 50 ps behind the shock front for these high-density PETN thin films. Thermochemical calculations for partially reacted Hugoniots also support this interpretation. Finally, the experimentally observed time scale of reactivity could be used to narrow possible initiation mechanisms.},
doi = {10.1021/acs.jpca.8b05387},
journal = {Journal of Physical Chemistry. A, Molecules, Spectroscopy, Kinetics, Environment, and General Theory},
number = 41,
volume = 122,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share: