Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/109225
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- Title
- The Dynamic properties of shock-waves formed during laser ablation at sub-atmospheric pressures
- Related
- Europhysics letters, Vol. 57, Issue 2 (2002), p.205-211
- DOI
- 10.1209/epl/i2002-00562-1
- Publisher
- EDP Sciences
- Date
- 2002
- FoR/RFCD Code(s)
-
020304 Thermodynamics and Statistical Physics
020204 Plasma Physics
- Author/Creator
- Kapitan, D
- Author/Creator
- Coutts, D. W
- Description
- The Sedov-Taylor-von Neumann (STN) theory has been shown to accurately describe the dynamic properties of shock-waves generated during pulsed-laser ablation of solid aluminium targets at visible wavelengths (510/578 nm) with 40 ns pulses with energies up to 3.5 mJ. A ballistic pendulum is used to measure the integrated recoil pressure in various inert atmospheres (He, Ne, Ar, Kr, Xe, N₂, CO₂, SF₆) with pressures of 10⁻² − 10³ mbar. This recoil momentum is found to scale linearly with the background gas pressure P₁ and with the square root of the molecular weight M₁. More interestingly, the scaling with the ratio of heat capacities γ is verified to be a monotonically increasing function dependent on the form factor of the shock-wave. The validity of a modified STN theory which accounts for the piston mass is assessed.
- Description
- 7 page(s)
- Subject Keyword
- 020304 Thermodynamics and Statistical Physics
- Subject Keyword
- 020204 Plasma Physics
- Resource Type
- journal article
- Organisation
- Macquarie University. Dept. of Physics and Astronomy
- Identifier
- http://hdl.handle.net/1959.14/109225
- Identifier
- ISSN:0295-5075
- Identifier
- mq-rm-2006008620
- Language
- eng
- Reviewed
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