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Title: Generation of shock trains in free liquid jets with a nanosecond green laser

Journal Article · · Physical Review Fluids

Shock wave trains in liquid jets were previously generated only by ablation with femtosecond x-ray lasers. Here we show that shock trains in water microjets can be also generated using nanosecond green laser pulses with 1- to 10-mJ energy. Furthermore, the ablation of 15-, 20-, 30-, and 70-μm water microjets opened a gap in the jets and launched an initial shock wave. Fully developed shock trains were observed in the 30- and 70-μm jets up to 250-ns delays, and these trains were also transmitted inside the nozzles. A few tens of nanoseconds after the pulse, the shock dynamics and its pressure became similar to the ones generated by x-ray lasers, with a more rapid pressure decay in thinner jets. At time delays exceeding 100 ns in the 30-μm jets, the leading shock pressure stabilized to an approximately constant pressure of 40 MPa. The energy density deposited in the jets was estimated at 30 MJ/cm3 by comparing the jet gaps in the green and x-ray laser experiments, and matched previous estimates for optical ablation in water. Here, the pressure decay in the 30-μm jets was modeled based on the pressure decay observed in x-ray laser experiments.

Research Organization:
Rutgers Univ., Newark, NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1734623
Journal Information:
Physical Review Fluids, Vol. 5, Issue 12; ISSN 2469-990X
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (28)

Generation of high-intensity ultrasound through shock propagation in liquid jets journal April 2019
Megahertz data collection from protein microcrystals at an X-ray free-electron laser journal August 2018
Drop Shaping by Laser-Pulse Impact journal April 2015
Product Screening of Fast Reactions in IR-Laser-Heated Liquid Water Filaments in a Vacuum by Mass Spectrometry journal March 2006
On the refraction of shock waves journal January 1989
Liquid explosions induced by X-ray laser pulses journal May 2016
Direct observation of bond formation in solution with femtosecond X-ray scattering journal February 2015
Microscale acoustofluidics: Microfluidics driven via acoustics and ultrasonics journal June 2011
A MHz-repetition-rate hard X-ray free-electron laser driven by a superconducting linear accelerator journal May 2020
The Magnitude and Waveform of Shock Waves Induced by X-ray Lasers in Water journal February 2020
Single-bubble and multibubble cavitation in water triggered by laser-driven focusing shock waves journal May 2018
Analysis of the early stages of liquid-water-drop explosion by numerical simulation journal April 2019
Plasma Propulsion of a Metallic Microdroplet and its Deformation upon Laser Impact journal July 2016
Negative Pressures and Spallation in Water Drops Subjected to Nanosecond Shock Waves journal May 2016
Mechanisms of Pulsed Laser Ablation of Biological Tissues journal February 2003
Targets for high repetition rate laser facilities: needs, challenges and perspectives journal January 2017
Generation and characterization of ultrathin free-flowing liquid sheets journal April 2018
Petawatt and exawatt class lasers worldwide journal January 2019
High-repetition-rate ( kHz) targets and optics from liquid microjets for high-intensity laser–plasma interactions journal January 2019
Liquid sample delivery techniques for serial femtosecond crystallography journal July 2014
Homogeneous Nucleation in Water in Microfluidic Channels journal July 2012
The extreme light infrastructure—nuclear physics (ELI-NP) facility: new horizons in physics with 10 PW ultra-intense lasers and 20 MeV brilliant gamma beams journal August 2018
Numerical investigation of homogeneous cavitation nucleation in a microchannel journal June 2018
Laser-induced plasma formation in water at nanosecond to femtosecond time scales: calculation of thresholds, absorption coefficients, and energy density journal January 1999
Direct Visualization of Laser-Driven Focusing Shock Waves journal May 2011
Expansion and Fragmentation of a Liquid-Metal Droplet by a Short Laser Pulse journal December 2018
Rapid sample delivery for megahertz serial crystallography at X-ray FELs journal July 2018
Cavitation in water: a review journal November 2006