An optical investigation into shock wave phenomena in liquids and solids

Hedley, Charles John Wykeham

(1973)

Hedley, Charles John Wykeham (1973) An optical investigation into shock wave phenomena in liquids and solids.

Our Full Text Deposits

Full text access: Open

10097373.pdf - 8.19 MB

Abstract

Methods for the production and detection of shock waves are reviewed with particular emphasis on the production of shock waves by exploding wires and by the absorption of energy from a pulsed laser system.

An exploding wire system is described for the generation of shockwaves in perspex plates. Observation is made using the stress induced bi-refrigence, and 'time integrated' photographs of shock waves are produced.At lower energies the exploding wire produces a mixture of wire vapour and molten droplets. The disintegration of the droplets is shown and described in terms of the mechanism shown by Lane and Edwards(104) to operate forwater droplets.

A modified Kerr cell shutter with an unsymmetric electrode geometry is described with reference to possible use as a fast light shutter for measuring shock wave velocities. A development of this shutter has one of the electrodes in the Kerr cell consisting of a stack of razor blades. Light which has been diffracted from an electrostrictively induced phase grating near the blade edges, has been detected. A number of mechanisms are described which take effect within the modified cell.

A system for the production and detection of shock waves by a Q-switched ruby laser is described. Shock waves are produced in liquids both by electrical breakdown and by evaporation of the surface material from a metal target. Experimental results show the production of shock waves with velocities up to 104 m/s in water. The ablation wave produced when the surface of a metal wire is evaporated by a laser has been photographed. This shock wave accelerates as it moves towards the centre of the wire. Finally, the process of stimulated Brillouin scattering is described as the pulsed laser is focused into a liquid.

Information about this Version

This is a Accepted version
This version's date is: 1973
This item is not peer reviewed

Link to this Version

https://repository.royalholloway.ac.uk/items/b7be8ef2-7e7f-43e6-96cb-f97c5ebf0375/1/

Item TypeThesis (Doctoral)
TitleAn optical investigation into shock wave phenomena in liquids and solids
AuthorsHedley, Charles John Wykeham
Uncontrolled KeywordsOptics; Physical Chemistry; Physics; Pure Sciences; Pure Sciences; Pure Sciences; Investigation; Liquids; Optical; Phenomena; Shock; Shock Wave; Solids; Shock Wave; Wave
DepartmentsDepartment of Physics

Identifiers

ISBN978-1-339-61448-9

Deposited by () on 01-Feb-2017 in Royal Holloway Research Online.Last modified on 01-Feb-2017

Notes

Digitised in partnership with ProQuest, 2015-2016. Institution: University of London, Royal Holloway College (United Kingdom).


Details