Time-resolved acoustic pulses generated by 4-MeV protons stopping in aluminum

1 January 1984

journal article
conference paper
Published by AIP Publishing in Applied Physics Letters

Vol. 44 (1) , 28-30
https://doi.org/10.1063/1.94591

Abstract

Time-resolved acoustic waves generated by pulsed proton beams stopping in aluminum and other solids have been observed. A wide-band capacitive detector indicates the target surface velocity as a function of acoustic time of flight. The near-field signal observed traveling in the beam direction is a measure of the initial pressure distribution along the path of the stopping beam. The measured amplitudes and shapes of such signals are consistent with a simple thermoelastic model of sound generation. Such signals have been used to probe a hydrogen implanted layer in aluminum, and to follow the blistering process in real time while an implanted target was annealed in place.

Keywords

This publication has 2 references indexed in Scilit:

Experimental studies of the acoustic signature of proton beams traversing fluid media
Nuclear Instruments and Methods, 1979
Elastic Wave Velocities in Two-component Systems
IMA Journal of Applied Mathematics, 1967