Issue 4, 2004

Time-integrated, spatially resolved plasma characterization of steel samples in the VUV

Abstract

A Nd∶YAG laser working at its fundamental wavelength with a pulse duration of 7 ns and energy of 820 mJ was focused onto a steel sample placed in vacuum (∼10−6 mbar) to produce a plasma. The excitation temperature and electron number density of the plasma were determined using a time-integrated, spatially resolved spectroscopic system. Light elements (S and C) in low concentrations (0.38% and 1.32%) in the steel samples have been used as the diagnostic elements. The strongest spectral lines of these elements are emitted from their ions in the deep vacuum ultraviolet (VUV) spectral region. Using the spectral lines emitted from the ions during the early phase of the plasma, excitation temperature and electron density were measured for different heights above the steel target surface. The electron excitation temperature was determined using the Boltzmann plot technique for S IV and S V, while the electron density was measured by the Stark broadening of two S V and one C II emission lines. Different values of the excitation temperatures of S IV and S V lines were obtained. The excitation temperature determined with S V was higher than that with S IV for all positions above the sample surface.

Article information

Article type
Paper
Submitted
02 Dec 2003
Accepted
21 Jan 2004
First published
02 Apr 2004

J. Anal. At. Spectrom., 2004,19, 468-473

Time-integrated, spatially resolved plasma characterization of steel samples in the VUV

J. Bengoechea and E. T. Kennedy, J. Anal. At. Spectrom., 2004, 19, 468 DOI: 10.1039/B315653B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements