Nanosecond Time-Resolved and Steady-State Infrared Studies of Photoinduced Decomposition of TATB at Ambient and Elevated Pressure

Autor:	Christian D. Grant, Jonathan C. Crowhurst, Joseph M. Zaug, Laurence E. Fried, Elizabeth A. Glascoe, Michael R. Armstrong
Rok vydání:	2009
Předmět:	Photoexcitation chemistry.chemical_compound chemistry Infrared TATB Analytical chemistry Physical and Theoretical Chemistry Fourier transform infrared spectroscopy Nanosecond Decomposition Spectral line Ambient pressure
Zdroj:	The Journal of Physical Chemistry A. 113:5881-5887
ISSN:	1520-5215 1089-5639
DOI:	10.1021/jp809418a
Popis:	The time scale and/or products of photoinduced decomposition of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) were investigated at ambient pressure and compared with products formed at 8 GPa. Ultrafast time-resolved infrared and steady-state Fourier transform IR (FTIR) spectroscopies were used to probe TATB and its products after photoexcitation with a 5 ns pulse of 532 nm light. At ambient pressure, transient spectra of TATB indicate that the molecule has significantly decomposed within 60 ns; transient spectra also indicate that formation of CO(2), an observed decomposition product, is complete within 30-40 mus. Proof of principle time-resolved experiments at elevated pressures were performed and are discussed briefly. Comparison of steady-state FTIR spectra obtained at ambient and elevated pressure (ca. 8 GPa) indicate that the decomposition products vary with pressure. We find evidence for water as a decomposition product only at elevated pressure.
Databáze:	OpenAIRE
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