Hot spot formation and chemical reaction initiation in shocked HMX crystals with nanovoids: a large-scale reactive molecular dynamics study

2016 ◽  
Vol 18 (26) ◽  
pp. 17627-17645 ◽  
Author(s):  
Tingting Zhou ◽  
Jianfeng Lou ◽  
Yangeng Zhang ◽  
Huajie Song ◽  
Fenglei Huang
Keyword(s):  
Molecular Dynamics ◽  
Chemical Reaction ◽  
Large Scale ◽  
Hot Spot ◽  
Reactive Molecular Dynamics ◽  
Hot Spot Formation ◽  
Reaction Initiation ◽  
Spot Formation

Shocked Energetic Molecular Materials: Chemical Reaction Initiation and Hot Spot Formation

1992 ◽  
Vol 296 ◽  
Author(s):  
M. D. Fayer ◽  
Andrei Tokmakoff ◽  
Dana D. Dlott
Keyword(s):  
Reaction Rate ◽  
Chemical Reactivity ◽  
Hot Spot ◽  
Low Frequency ◽  
Phonon Modes ◽  
Rate Laws ◽  
Anharmonic Coupling ◽  
Hot Spot Formation ◽  
Reaction Initiation ◽  
Spot Formation

AbstractA theoretical model is developed to describe multiphonon up-pumping of internal vibrations. The dominant mechanism for up-pumping is anharmonic coupling of excited phonon modes with low frequency molecular vibrations, termed doorway modes. Quantitative calculations were performed which show the extent and rate of multiphonon up-pumping caused by shock excitation. The time dependence of chemical reactivity behind the front is calculated using reaction rate laws for the decomposition of nitramine explosives. A mechanism for hot spot formation, based on defect induced local increases in anharmonic coupling, is discussed.

scholarly journals Observations of anomalous x-ray emission at early stages of hot-spot formation in deuterium-tritium cryogenic implosions

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
R. C. Shah ◽  
S. X. Hu ◽  
I. V. Igumenshchev ◽  
J. Baltazar ◽  
D. Cao ◽  
...  
Keyword(s):  
Hot Spot ◽  
X Ray ◽  
Early Stages ◽  
Hot Spot Formation ◽  
Spot Formation

Novel Ag/Au/Pt trimetallic nanocages used with surface-enhanced Raman scattering for trace fluorescent dye detection

2014 ◽  
Vol 2 (34) ◽  
pp. 5550-5557 ◽  
Author(s):  
Tran Thi Bich Quyen ◽  
Wei-Nien Su ◽  
Ching-Hsiang Chen ◽  
John Rick ◽  
Jyong-Yue Liu ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Hot Spot ◽  
Surface Enhanced Raman Scattering ◽  
Signal Enhancement ◽  
Fluorescent Dye ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Hot Spot Formation ◽  
Spot Formation

Trimetallic nanocages possess inter-metallic synergies among elements and are able to generate significant SERS signal enhancement due to “hot spot” formation.

Effect of Support on the Suppression of Hot Spot Formation in the Partial Oxidation of Methane

2009 ◽  
Vol 38 (7) ◽  
pp. 720-721 ◽  
Author(s):  
Tetsuya Shishido ◽  
Reina Morishima ◽  
Yusuke Yoshinaga ◽  
Sadao Hasegawa ◽  
Tsunehiro Tanaka
Keyword(s):  
Partial Oxidation ◽  
Hot Spot ◽  
Partial Oxidation Of Methane ◽  
Oxidation Of Methane ◽  
Effect Of Support ◽  
Hot Spot Formation ◽  
Spot Formation
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