Studies in shocked nitromethane through high dynamic range spectroscopy

Bhowmick, Mithun; Nissen, Erin J.; Матвеев, С А; Dlott, Dana D.

doi:10.1063/1.5044876

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…The enhancement mechanism is that a small amount of ethanol leads to an enhancement of peak source function, reducing the laser‐induced breakdown (LIB) threshold of water molecules and generating more nanobubbles with larger diameter. Collapse of nanobubbles produces shock waves with extremely high dynamic pressure, [ 26–29 ] which enhances the hydrogen bonding structure of water molecules. Meanwhile, the generation of nanoshock waves is accompanying by an increase in translational and rotational energy, which would preferentially excite phonons and lower energy molecular vibrations.…”

Section: Introductionmentioning

confidence: 99%

Nanoshock wave enhancement on stimulated Raman scattering of liquid water in dilute ethanol–water solutions

Wang

et al. 2020

J Raman Spectroscopy

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Stimulated Raman scattering (SRS) of OH stretching vibrations in pure water and dilute ethanol–water solutions under different pump laser energies has been investigated using Nd:YAG laser. Two characteristic peaks at about 3252 and 3390 cm−1 are observed in mixture solutions, indicating the formation of strong and weak hydrogen bonds in water. A new shoulder peak at 3350 cm−1 appears in the mixture solutions at high laser energy due to the enhancement of hydrogen bond structure of water molecules. Simultaneously, the normalized SRS intensity of mixture solutions is higher than that of pure water at the same laser energy. These results indicate that SRS of water molecules is enhanced in dilute ethanol–water solutions. We propose that the mechanism is the reduction of the laser breakdown threshold of liquid water via ethanol, resulting in a strong nanoshock wave, thereby enhancing the SRS of water.

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Section: Introductionmentioning

confidence: 99%

Nanoshock wave enhancement on stimulated Raman scattering of liquid water in dilute ethanol–water solutions

Wang

et al. 2020

J Raman Spectroscopy

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show abstract

“…To do that, the model should be robust enough to successfully simulate existing experimental data. There are open questions related to chemical kinetics and initiation of energetic materials which could be answered once the models can accurately simulate current high-resolution interferometry data [13]. One such example is the reactive and flow model "ALE3D," developed at Lawrence Livermore National Laboratory [14].…”

Section: Introductionmentioning

confidence: 99%