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Laser plasma ablation of carbon

Authors
Journal
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
0168-9002
Publisher
Elsevier
Publication Date
Volume
334
Issue
1
Identifiers
DOI: 10.1016/0168-9002(93)90546-t

Abstract

Abstract A new plant for fabricating carbon stripper foils by laser plasma ablation-deposition has been installed. The adaptation of the preparation process to the ultrahigh vacuum system and the pulsed (≈ 10 ns pulse width) Nd:YAG laser with a repetition rate of 50 Hz is described. Carbon deposition rates were measured as a function of laser power density, polar angle ϑ and azimuth angle ϕ, where the central laser beam defines the polar axis. The crystal structure of the ≈ 4 μg/cm 2 thick carbon foils was analyzed with respect to laser power density and polar angle ϑ. In addition, the specific gravity and resistivity of such carbon foils were measured in relation to the laser power density for carbon films mounted during deposition at ϑ = 14°.

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