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Title: A novel method for the measurement of the von Neumann spike in detonating high explosives

Abstract

We present detonation wave profiles measured in T2 (97 wt. % TATB) and TX1 (52 wt. % TATB and 45 wt. % HMX) high explosives. The experiments consisted in initiating a detonation wave in a 15 mm diameter cylinder of explosive using an explosive wire detonator and an explosive booster. Free surface velocity wave profiles were measured at the explosive/air interface using a Photon Doppler Velocimetry system. We demonstrate that a comparison of these free surface wave profiles with those measured at explosive/window interfaces in similar conditions allows to bracket the von Neumann spike in a narrow range. For T2, our measurements show that the spike pressure lies between 35.9 and 40.1 GPa, whereas for TX1, it lies between 42.3 and 47.0 GPa. The numerical simulations performed in support to these measurements show that they can be used to calibrate reactive burn models and also to check the accuracy of the detonation products equation of state at low pressure.

Authors:
 [1]; ; ;  [2]
  1. CEA, DAM, DIF, 91297 Arpajon (France)
  2. CEA, DAM, Le Ripault, 37260 Monts (France)
Publication Date:
OSTI Identifier:
22596648
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 119; Journal Issue: 24; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; AIR; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; CYLINDERS; DETONATION WAVES; DETONATORS; EQUATIONS OF STATE; EXPLOSIONS; INTERFACES; PHOTONS; PRESSURE RANGE PA; SURFACES; TATB; VELOCITY; WAVE PROPAGATION; WINDOWS

Citation Formats

Sollier, A., E-mail: arnaud.sollier@cea.fr, Bouyer, V., Hébert, P., and Doucet, M. A novel method for the measurement of the von Neumann spike in detonating high explosives. United States: N. p., 2016. Web. doi:10.1063/1.4955075.
Sollier, A., E-mail: arnaud.sollier@cea.fr, Bouyer, V., Hébert, P., & Doucet, M. A novel method for the measurement of the von Neumann spike in detonating high explosives. United States. doi:10.1063/1.4955075.
Sollier, A., E-mail: arnaud.sollier@cea.fr, Bouyer, V., Hébert, P., and Doucet, M. 2016. "A novel method for the measurement of the von Neumann spike in detonating high explosives". United States. doi:10.1063/1.4955075.
@article{osti_22596648,
title = {A novel method for the measurement of the von Neumann spike in detonating high explosives},
author = {Sollier, A., E-mail: arnaud.sollier@cea.fr and Bouyer, V. and Hébert, P. and Doucet, M.},
abstractNote = {We present detonation wave profiles measured in T2 (97 wt. % TATB) and TX1 (52 wt. % TATB and 45 wt. % HMX) high explosives. The experiments consisted in initiating a detonation wave in a 15 mm diameter cylinder of explosive using an explosive wire detonator and an explosive booster. Free surface velocity wave profiles were measured at the explosive/air interface using a Photon Doppler Velocimetry system. We demonstrate that a comparison of these free surface wave profiles with those measured at explosive/window interfaces in similar conditions allows to bracket the von Neumann spike in a narrow range. For T2, our measurements show that the spike pressure lies between 35.9 and 40.1 GPa, whereas for TX1, it lies between 42.3 and 47.0 GPa. The numerical simulations performed in support to these measurements show that they can be used to calibrate reactive burn models and also to check the accuracy of the detonation products equation of state at low pressure.},
doi = {10.1063/1.4955075},
journal = {Journal of Applied Physics},
number = 24,
volume = 119,
place = {United States},
year = 2016,
month = 6
}
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