Shock physics at the nanoscale [Invited]

Moore, David S.

doi:10.1364/josab.35.0000b1

Cited by 10 publications

(2 citation statements)

References 165 publications

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“…This feature has stimulated researches such as extraterrestrial material, [3] structural phase transition, [4][5][6] insulator-metal transition, [7] metallic hydrogen, [8,9] high-temperature super conductor [10][11][12] and dissociation/polymerization of molecules. [13][14][15][16] Ultrahigh pressure produced by diamond anvil cells [17] is static and isotropic, whereas laser driven shock wave generates dynamic ultrahigh pressure [18][19][20] up to 1 TPa [21] compressing objects in one direction. Highly intense light field enough to generate such an ultrahigh pressure has been applied to atoms and molecules in vacuum.…”

Section: Introductionmentioning

confidence: 99%

Mechanical C−C Bond Formation by Laser Driven Shock Wave

Ishikawa

Sato

2020

ChemPhysChem

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Mechanically induced C−C bond formation was demonstrated by the laser driven shock wave generated in liquid normal alkanes at room temperature. Gas chromatography mass spectrometry analysis revealed the dehydrogenation condensation between two alkane molecules, for seven normal alkanes from pentane to undecane. Major products were identified to be linear and branched alkane molecules with double the number of carbons, and exactly coincided with the molecules predicted by supposing that a C−C bond was formed between two starting molecules. The production of the alkane molecules showed that the C−C bond formation occurred almost evenly at all the carbon positions. The dependence of the production on the laser pulse energy clearly indicated that the process was attributed to the shock wave. The C−C bond formation observed was not a conventional passive chemical reaction but an unprecedented active reaction.

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Section: Introductionmentioning

confidence: 99%

Mechanical C−C Bond Formation by Laser Driven Shock Wave

Ishikawa

Sato

2020

ChemPhysChem

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“…Interfering this probe pulse with a replica reference pulse in an imaging spectrometer yields a 2-dimensional (2D) (1D space and wavelength) interferogram from which the pump-induced phase shift (hence, the ultrafast transient) can be extracted . This technique, and variants [2,3], have been used to measure various phenomena including double-step ionization of helium [4], laser wakefields [5], n 2 measurement of air at mid-and long wave-IR wavelengths [6], bound-electron nonlinearities near the ionization threshold for various gases [7], ultrafast nonlinear electronic, rotational, and vibrational responses in molecular gases [8], optical conductivity of laser-heated aluminum plasma [9], time domain terahertz waveform [10], polymorphic phase transitions in iron [11], and characterize laser-induced shock in materials [12].…”

Section: Introductionmentioning

confidence: 99%

Simplified single-shot supercontinuum spectral interferometry

et al. 2020

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We have experimentally demonstrated a simplified method for performing single-shot supercontinuum spectral interferometry (SSSI) that does not require pre-characterization of the probe pulse. The method, originally proposed by D. T. Vu, D. Jang, and K. Y. Kim, uses a genetic algorithm (GA) and as few as two time-delayed pump-probe shots to retrieve the pump-induced phase shift on the probe [Opt. Express 26, 20572 (2018)]. We show that the GA is able to successfully retrieve the transient modulations on the probe, and that the error in the retrieved modulation decreases dramatically with the number of shots used. In addition, we propose and demonstrate a practical method that allows SSSI to be done with a single pump-probe shot (again, without the need for pre-characterization of the probe). This simplified method can prove to be immensely useful when performing SSSI with a low-repetition-rate laser source.

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X-ray free electron laser observation of ultrafast lattice behaviour under femtosecond laser-driven shock compression in iron

Sano,

Matsuda,

Hirose

et al. 2023

Sci Rep

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Over the past century, understanding the nature of shock compression of condensed matter has been a major topic. About 20 years ago, a femtosecond laser emerged as a new shock-driver. Unlike conventional shock waves, a femtosecond laser-driven shock wave creates unique microstructures in materials. Therefore, the properties of this shock wave may be different from those of conventional shock waves. However, the lattice behaviour under femtosecond laser-driven shock compression has never been elucidated. Here we report the ultrafast lattice behaviour in iron shocked by direct irradiation of a femtosecond laser pulse, diagnosed using X-ray free electron laser diffraction. We found that the initial compression state caused by the femtosecond laser-driven shock wave is the same as that caused by conventional shock waves. We also found, for the first time experimentally, the temporal deviation of peaks of stress and strain waves predicted theoretically. Furthermore, the existence of a plastic wave peak between the stress and strain wave peaks is a new finding that has not been predicted even theoretically. Our findings will open up new avenues for designing novel materials that combine strength and toughness in a trade-off relationship.

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Shock physics at the nanoscale [Invited]

Cited by 10 publications

References 165 publications

Mechanical C−C Bond Formation by Laser Driven Shock Wave

Mechanical C−C Bond Formation by Laser Driven Shock Wave

Simplified single-shot supercontinuum spectral interferometry

X-ray free electron laser observation of ultrafast lattice behaviour under femtosecond laser-driven shock compression in iron

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