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Cavity formation and material ablation for single-pulse laser-ablated solids immersed in water at high pressure

Cavity formation and material ablation for single-pulse laser-ablated solids immersed in water at high pressure
Cavity formation and material ablation for single-pulse laser-ablated solids immersed in water at high pressure
The effects of hydrostatic pressure on cavity formation and material ablation have been investigated for a brass plate immersed in water irradiated by a single laser pulse of duration <10 ns. Shadowgraph imaging and volumetric measurements of the ablated material demonstrate that the density of the material inside the cavity does not vary significantly for hydrostatic pressures between 0.1 and 30 MPa (300 atm) during the early stages, <600 ns after laser irradiation, indicating that the pressures induced by focusing a high-power laser in the confined medium dominate the transient pressure regime over this period.
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Thornton, Blair
8293beb5-c083-47e3-b5f0-d9c3cee14be9
Takahashi, Tomoko
3f3f98c5-993c-4e11-b5ec-0fa4dbdbced9
Ura, Tamaki
b8fea5ba-e731-40fd-8544-1db1ca9f356b
Sakka, Tetsuo
fd41ffee-1abd-46cb-99dc-94bb96aecc38
Thornton, Blair
8293beb5-c083-47e3-b5f0-d9c3cee14be9
Takahashi, Tomoko
3f3f98c5-993c-4e11-b5ec-0fa4dbdbced9
Ura, Tamaki
b8fea5ba-e731-40fd-8544-1db1ca9f356b
Sakka, Tetsuo
fd41ffee-1abd-46cb-99dc-94bb96aecc38

Thornton, Blair, Takahashi, Tomoko, Ura, Tamaki and Sakka, Tetsuo (2012) Cavity formation and material ablation for single-pulse laser-ablated solids immersed in water at high pressure. Applied Physics Express, 5 (10), 1-3. (doi:10.1143/APEX.5.102402).

Record type: Article

Abstract

The effects of hydrostatic pressure on cavity formation and material ablation have been investigated for a brass plate immersed in water irradiated by a single laser pulse of duration <10 ns. Shadowgraph imaging and volumetric measurements of the ablated material demonstrate that the density of the material inside the cavity does not vary significantly for hydrostatic pressures between 0.1 and 30 MPa (300 atm) during the early stages, <600 ns after laser irradiation, indicating that the pressures induced by focusing a high-power laser in the confined medium dominate the transient pressure regime over this period.

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More information

Accepted/In Press date: 23 September 2012
Published date: 10 October 2012
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 400020
URI: http://eprints.soton.ac.uk/id/eprint/400020
PURE UUID: 5785b1de-afdb-4ea0-9f8f-a819c57d25cb

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Date deposited: 12 Sep 2016 15:51
Last modified: 08 Jan 2022 03:37

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Contributors

Author: Blair Thornton
Author: Tomoko Takahashi
Author: Tamaki Ura
Author: Tetsuo Sakka

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