Radiation-Induced Decomposition of PETN and TATB under Extreme Conditions

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• 作者：Hubertus Giefers ; Michael Pravica
• 刊名：Journal of Physical Chemistry A
• 出版年：2008
• 出版时间：April 17, 2008
• 年：2008
• 卷：112
• 期：15
• 页码：3352 - 3359
• 全文大小：918K
• 年卷期：v.112,no.15(April 17, 2008)
• ISSN：1520-5215

文摘

We conducted a series of experiments investigating decomposition of secondary explosives PETN and TATBat varying static pressures and temperatures using synchrotron radiation. As seen in our earlier work, thedecomposition rate of TATB at ambient temperature slows systematically with increasing pressure up to atleast 26 GPa but varies little with pressure in PETN at ambient temperature up to 15.7 GPa, yielding importantinformation pertaining to the activation complex volume in both cases. We also investigated the radiation-induced decomposition rate as a function of temperature at ambient pressure and 26 GPa for TATB up to403 K, observing that the decomposition rate increases with increasing temperature as expected. The activationenergy for the TATB reaction at ambient temperature was experimentally determined to be 16 ± 3 kJ/mol.