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The Magnitude and Waveform of Shock Waves Induced by X-ray Lasers in Water.

Authors :
Stan, Claudiu Andrei
Motomura, Koji
Blaj, Gabriel
Kumagai, Yoshiaki
Li, Yiwen
You, Daehyun
Ono, Taishi
Kalita, Armin
Togashi, Tadashi
Owada, Shigeki
Tono, Kensuke
Yabashi, Makina
Katayama, Tetsuo
Ueda, Kiyoshi
Source :
Applied Sciences (2076-3417); Feb2020, Vol. 10 Issue 4, p1497, 18p
Publication Year :
2020

Abstract

The high energy densities deposited in materials by focused X-ray laser pulses generate shock waves which travel away from the irradiated region, and can generate complex wave patterns or induce phase changes. We determined the time-pressure histories of shocks induced by X-ray laser pulses in liquid water microdrops, by measuring the surface velocity of the microdrops from images recorded during the reflection of the shock at the surface. Measurements were made with ~30 µm diameter droplets using 10 keV X-rays, for X-ray pulse energies that deposited linear energy densities from 3.5 to 120 mJ/m; measurements were also made with ~60 µm diameter drops for a narrower energy range. At a distance of 15 µm from the X-ray beam, the peak shock pressures ranged from 44 to 472 MPa, and the corresponding time-pressure histories of the shocks had a fast quasi-exponential decay with positive pressure durations estimated to range from 2 to 5 ns. Knowledge of the amplitude and waveform of the shock waves enables accurate modeling of shock propagation and experiment designs that either maximize or minimize the effect of shocks. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20763417
Volume :
10
Issue :
4
Database :
Complementary Index
Journal :
Applied Sciences (2076-3417)
Publication Type :
Academic Journal
Accession number :
142551911
Full Text :
https://doi.org/10.3390/app10041497