TY - GEN
T1 - Nitro stretch probing of a single molecular layer to monitor shock compression with picosecond time resolution
AU - Berg, Christopher M.
AU - Lagutchev, Alexei
AU - Fu, Yuanxi
AU - Dlott, Dana D.
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - Ultrafast shock compression vibrational spectroscopy experiments with molecular monolayers provide atomic-scale time and space resolution, which enables critical testing of reactive molecular simulations. Since the origination of this project, we have greatly improved the ability to detect shocked monolayers by nonlinear coherent vibrational spectroscopy with nonresonant suppression. In this study, we show new results on a nitroaromatic monolayer, where the nitro symmetric stretch is probed. A small frequency blue-shift under shock conditions compared to measurements with static high pressure shows the shock is ∼1 GPa. The ability to flash-preheat the monolayer by several hundred K is demonstrated. In order to observe shock monolayer chemistry in real time, along with pre-heating, the shock pressure needs to be increased and methods to do so are described.
AB - Ultrafast shock compression vibrational spectroscopy experiments with molecular monolayers provide atomic-scale time and space resolution, which enables critical testing of reactive molecular simulations. Since the origination of this project, we have greatly improved the ability to detect shocked monolayers by nonlinear coherent vibrational spectroscopy with nonresonant suppression. In this study, we show new results on a nitroaromatic monolayer, where the nitro symmetric stretch is probed. A small frequency blue-shift under shock conditions compared to measurements with static high pressure shows the shock is ∼1 GPa. The ability to flash-preheat the monolayer by several hundred K is demonstrated. In order to observe shock monolayer chemistry in real time, along with pre-heating, the shock pressure needs to be increased and methods to do so are described.
KW - femtosecond spectroscopy
KW - laser-driven shock
KW - molecular monolayers
UR - http://www.scopus.com/inward/record.url?scp=84861960903&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84861960903&partnerID=8YFLogxK
U2 - 10.1063/1.3686584
DO - 10.1063/1.3686584
M3 - Conference contribution
AN - SCOPUS:84861960903
SN - 9780735410060
T3 - AIP Conference Proceedings
SP - 1573
EP - 1576
BT - Shock Compression of Condensed Matter - 2011 - Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
T2 - 17th Biennial Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2011 APS SCCM
Y2 - 26 June 2011 through 1 July 2011
ER -