Characterisation of contaminant plumes arising from laser-solid target interactions

Andrew, James E.; Wallace, Katherine A.

doi:10.1117/12.867393

Cited by 2 publications

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“…In this paper, as in others, we will use the following definitions of shrapnel and debris [11,12]. Debris is gaseous or liquid target by-products that can produce a coating or feature on a surface WITHOUT causing any physical damage to an optical surface or diagnostic component.…”

Section: Shrapnel and Debris Definitionsmentioning

confidence: 99%

The effects of plasma physics target shrapnel and debris plumes arising from early operations of the Orion laser

et al. 2014

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When lasers are used to produce high temperature, high density plasmas from solid targets it is inevitable that the targets are turned into a variety of products [gas, liquid, solid, sub-atomic particles and electromagnetic radiation] that are distributed around the surfaces of the vacuum chamber used to field such experiments. These by products are produced in plumes of debris and shrapnel that depend on the irradiation conditions, target materials and target geometry. We have monitored the distribution of such plumes by witness plates and used microscopy, photography and spectrophotometry to determine the physical state of material in the plumes and the spatial distribution from various target geometries. The impact of this material on the operations of laser optics and plasma physics diagnostics is discussed.

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Section: Shrapnel and Debris Definitionsmentioning

confidence: 99%

The effects of plasma physics target shrapnel and debris plumes arising from early operations of the Orion laser

et al. 2014

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“…Also visible in these micrographs were splats formed from molten metal from the target with diameters up to 50 microns. In order to fully quantify and visualize this micrograph data we used our SCAMS software [7,8] to plot a variety of debris and shrapnel spatial statistics as shown in Figure 21. In each graph, data from three horizontal lines of micrographs are plotted [mid plane and +/-5mm].…”

Section: Figure 16 -Volmer-weber Thin Film Growth Model [A] Materials mentioning

confidence: 99%

Measurement of debris and shrapnel plumes from cylindrical metal targets used in high-power laser systems

Andrew

Wallace

2012

SPIE Proceedings

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All laser targets subjected to heating by focused energetic lasers for the study of high temperature plasmas produce shrapnel, debris or radiation directly or indirectly that impact and coat the optics, instruments and surfaces used in the vacuum chambers employed for such studies. We describe the spatial distributions of the target ejecta arising from various configurations of thin walled metal cylinder targets and their mechanical mounting systems that have been deployed on the Helen and ZBeamlet lasers. We also demonstrate how this data can be used to evaluate threats to optical surfaces and ancillary instruments in high energy, high power laser systems. The methods used for characterizing and quantifying material plumes will also be described.

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Characterisation of contaminant plumes arising from laser-solid target interactions

Cited by 2 publications

References 0 publications

The effects of plasma physics target shrapnel and debris plumes arising from early operations of the Orion laser

The effects of plasma physics target shrapnel and debris plumes arising from early operations of the Orion laser

Measurement of debris and shrapnel plumes from cylindrical metal targets used in high-power laser systems

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