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

Elizabeth A. Glascoe | Zendy; Joseph M. Zaug | Zendy; Michael R. Armstrong | Zendy; Jonathan C. Crowhurst | Zendy; Christian D. Grant | Zendy; Laurence E. Fried | Zendy

Open Access

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

Author(s) -

Elizabeth A. Glascoe,

Joseph M. Zaug,

Michael R. Armstrong,

Jonathan C. Crowhurst,

Christian D. Grant,

Laurence E. Fried

Publication year - 2009

Publication title -

the journal of physical chemistry a

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.756

H-Index - 235

eISSN - 1520-5215

pISSN - 1089-5639

DOI - 10.1021/jp809418a

Subject(s) - tatb , photoexcitation , decomposition , fourier transform infrared spectroscopy , analytical chemistry (journal) , nanosecond , chemistry , ambient pressure , infrared spectroscopy , infrared , photochemistry , ultrafast laser spectroscopy , materials science , spectroscopy , organic chemistry , optics , thermodynamics , atomic physics , excited state , explosive material , laser , detonation , physics , quantum mechanics

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.

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