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Updated: Jun 1, 2025

Research and Development of High-performance Explosives
Published on: February 20, 2016
Ultrafast Dissociation Dynamics of the Sensitive Explosive Ethylene Glycol Dinitrate
Erica Britt1, Hugo A López Peña1, Jacob M Shusterman1
1Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284, United States.
This study reveals three distinct decomposition timescales for ethylene glycol dinitrate (EGDN) cations, crucial for understanding explosive detonation physics and improving safety.
Area of Science:
- Chemistry
- Physics
- Materials Science
Background:
- Ethylene glycol dinitrate (EGDN) is a key nitrate ester explosive in military applications.
- Understanding its decomposition is vital for safety and performance.
Purpose of the Study:
- To investigate the initial decomposition dynamics of the EGDN cation.
- To correlate decomposition timescales with molecular behavior.
Main Methods:
- Femtosecond time-resolved mass spectrometry (FTRMS) experiments.
- Ab initio electronic structure and molecular dynamics computations.
Main Results:
- Identified three dissociation timescales for the EGDN cation: ~40-60 fs, 340-450 fs, and >2 ps.
- Rationalized these timescales through electronic and geometric relaxation of EGDN conformers.
Conclusions:
- Provided crucial insights into the initial molecular decomposition processes of nitrate ester explosives.
- Findings can enhance safety protocols and optimize explosive performance.
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