Photoacoustic shock generation in carbon suspensions

Journal Article · Mon Dec 27 00:00:00 EST 1999 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.125583· OSTI ID:20217764

Beveridge, Andrew C ^[1]; McGrath, Thomas E ^[1]; Diebold, Gerald J ^[1]; Karabutov, Alexander A ^[2]

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1. Department of Chemistry, Brown University, Providence, Rhode Island 02912 (United States)
2. International Laser Center, Moscow State University, Moscow, Russia (Russian Federation)

This letter discusses photoacoustic shock wave generation and the origin of nonlinear sound wave generation in carbon suspensions. The Burgers equation for an inviscid fluid is solved for an exponential acoustic wave. The solution shows an increasingly steep wave form that gradually coalesces into a shock front. Large dynamic range measurements of photoacoustic waves generated by a pulsed-laser beam in carbon suspensions show the pressure in the wave to depart significantly from the predictions of linear response theory. Acoustic sound speed and amplitude measurements indicate that weak shocks are produced from the photoacoustic sound generation process rather than from nonlinear propagational effects. (c) 1999 American Institute of Physics.

• OSTI ID: 20217764
• Journal Information: Applied Physics Letters, Vol. 75, Issue 26; Other Information: PBD: 27 Dec 1999; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON
SUSPENSIONS
LASER RADIATION
PHOTOACOUSTIC EFFECT
SHOCK WAVES
WAVE PROPAGATION
SOUND WAVES
EXPERIMENTAL DATA
THEORETICAL DATA