Picosecond ultrasonic study of phonon reflection from solid-liquid interfaces

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.1852· OSTI ID:471193

Tas, G; Maris, H J ^[1]

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1. Department of Physics, Brown University, Providence, Rhode Island 02912 (United States)

We have studied the reflection of longitudinal-acoustic phonons with frequencies between 100 and 300 GHz from solid-liquid interfaces using a picosecond ultrasonic technique. Acoustic phonons were generated by absorption of a picosecond light pulse in a metal film. After propagating through a dielectric layer, the phonons were reflected at the solid-liquid interface. We have measured the reflection coefficient at a series of interfaces between dielectric solids and organic liquids for temperatures from 265 to 300 K. The reflection of 205 GHz phonons was also measured between aluminum and liquid argon and nitrogen. The experimental results were compared with the predictions of the classical acoustic-mismatch model. {copyright} {ital 1997} {ital The American Physical Society}

• DOE Contract Number: FG02-86ER45267
• OSTI ID: 471193
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 3 Vol. 55; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALUMINIUM
ARGON
GHZ RANGE 100-1000
INTERFACES
LIQUIDS
NITROGEN
PULSE TECHNIQUES
REFLECTION
SOLIDS
TEMPERATURE RANGE 0273-0400 K
ULTRASONIC WAVES