Investigation of the process of decomposition in a detonation wave by the isotope method

Anisichkin, V. F.; Derendyaev, B. G.; Koptyug, V. A.; Mal'kov, I. Yu.; Salakhutdinov, N. F.; Титов, В.М.

doi:10.1007/bf00750630

Cited by 4 publications

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“…The diamond phase was extracted from the total carbon by boiling in strong acids, after which the label content in it was determined. In [2,3], the content of the 13 C nonradioactive isotope was determined by mass spectrometry, and the measurement error was 2-3%, as is noted above. In [4][5][6], the content of the 14 C radioactive isotope was determined from specific radioactivity.…”

Section: Introductionmentioning

confidence: 99%

“…In the first experiment, labeled TNT was mixed with RDX with a mean particle size of ≈50 µm [2], and in the second experiment, it was mixed with coarse HMX with a particle size of ≈120 µm [3]. This allowed, in addition, the mixing and chemical interaction of the HE components to be studied during detonation.…”

Section: Introductionmentioning

confidence: 99%

“…In two experiments [2] and [3], TNT was synthesized whose methyl group (CH 3 ) contained a 13 C carbon isotope instead of 12 C, which made it possible, in addition, to elucidate whether the carbon atoms of the methyl group and benzene ring are equivalent in detonation reactions. In the first experiment, labeled TNT was mixed with RDX with a mean particle size of ≈50 µm [2], and in the second experiment, it was mixed with coarse HMX with a particle size of ≈120 µm [3].…”

Section: Introductionmentioning

confidence: 99%

“…The errors in calculating the yield of detonation products from such measurements were 3-4% [4]. (In [2], the gaseous detonation products were additionally separated by sequential condensation at the liquid nitrogen and liquid helium temperature, and their elemental composition and the label content was determined).…”

Section: Introductionmentioning

confidence: 99%

“…One method for studying chemical reaction mechanisms, including detonation ones, is the method of isotopic tracers employed for powerful HEs in [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Isotope studies of detonation mechanisms of TNT, RDX, and HMX

Anisichkin

2007

Combust Explos Shock Waves

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…One method for studying chemical reaction mechanisms, including detonation ones, is the method of isotopic tracers employed for powerful HEs in [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Isotope studies of detonation mechanisms of TNT, RDX, and HMX

Anisichkin

2007

Combust Explos Shock Waves

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Using the tracer method to study detonation processes

Kozyrev

2008

Combust Explos Shock Waves

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The tracer method was used to study the synthesis of nanodiamonds during detonation of composite explosives. Alloys of TNT with RDX, HMX, PETN, and benzotrifuroxan were studied. It was shown that, in all cases, most nanodiamonds were formed from TNT carbon. It was concluded that during the chemical reaction in the detonation wave propagating in heterogeneous explosives, equilibrium parameters were not established. In homogeneous TNT/PETN mixtures, individual components react with each other to form common products.

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Multiple Roles of Highly Vibrationally Excited Molecules in the Reaction Zones of Detonation Waves

Tarver

1997

J. Phys. Chem. A

115

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Recent experimental and theoretical advances in the understanding of high-pressure, high-temperature chemical kinetics are used to extend the nonequilibrium Zeldovich−von Neumann−Doring (NEZND) theory of self-sustaining detonation in liquid and solid explosives. The attainment of vibrational equilibrium behind the leading shock front by multiphonon up-pumping and internal vibrational energy redistribution establishes a high-temperature, high-density transition state or series of transition states through which the chemical decomposition proceeds. The reaction rate constants for the initial unimolecular decomposition steps are accurately calculated using high-temperature, high-density transition-state theory. These early reactions are endothermic or weakly exothermic, but they channel most of the available energy into excited vibrational states of intermediate product species. The intermediate products transfer some of their vibrational energy back into the transition states, accelerating the overall reaction rates. As the decomposition progresses, the highly vibrationally excited diatomic and triatomic molecules formed in very exothermic chain reactions are rapidly vibrationally equilibrated by “supercollisions”, which transfer large amounts of vibrational energy between these molecules. Along with vibrational−rotational and vibrational−translational energy transfer, these excited vibrational modes relax to thermal equilibrium by amplifying pressure wavelets of certain frequencies. These wavelets then propagate to the leading shock front and reinforce it. This is the physical mechanism by which the leading shock front is sustained by the chemical energy release.

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Investigation of the process of decomposition in a detonation wave by the isotope method

Cited by 4 publications

References 0 publications

Isotope studies of detonation mechanisms of TNT, RDX, and HMX

Isotope studies of detonation mechanisms of TNT, RDX, and HMX

Using the tracer method to study detonation processes

Multiple Roles of Highly Vibrationally Excited Molecules in the Reaction Zones of Detonation Waves

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