NDLI: Blue diode spectroscopy in a plasma focus device

Content Provider	IEEE Xplore Digital Library
Author	Mathuthu, M. Zengeni, T.G.
Copyright Year	2004
Description	Author affiliation: Dept. Phys., Zimbabwe Univ., Harare, Zimbabwe (Mathuthu, M.; Zengeni, T.G.)
Abstract	Summary form only given. The 405 nm blue diode has found many applications in medicine as a diagnostic tool for skin cancer. It has also been used to detect fluorescence from living plants, oils, paints etc. In this work, we report on the application of this laser as a diagnostic tool in a Plasma Focus Device (PFD). The PFD is an ion and electron accelerator. These charged particles are released when a gas in the chamber is ionised into a plasma by an electrical discharge. It is these excited ions and electrons which then undergo transitions thus giving out their energy. Some of this energy manifests as line emissions and some as X-ray radiations. The fluorescence from these atomic transitions can then be used to identify the different ions in the plasma, their temperatures and the radiations they emit. Some of the fusion products are neutrons, gamma and alpha particles. Results show that when a PFD is discharged with Argon as filling gas, Ar-I, Ar-II, Ar-III, Ar-IV and Ar-V species are produced. With Nitrogen gas filling, N-I, N-III and N-IV species are produced and with oxygen as filling gas, O-I, O-II, O-III, O-IV and O-V species are produced. The energies of these species range from 1.5 eV to 3.55 eV, the larger energies coming from O-III and the lower energies are due to N-I and N-II. We conclude that simultaneous determination of several species is possible with the 405 nm Blue Diode laser.
Sponsorship	Plasma Sci. and Applications Committee of the IEEE Nuclear and Plasma Sci. Soc
File Size	51398
File Format	PDF
ISBN	0780383346
ISSN	07309244
DOI	10.1109/PLASMA.2004.1340179
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Diodes Spectroscopy Plasma devices Plasma applications Plasma diagnostics Phase frequency detector Filling Fluorescence Plasma accelerators Plasma x-ray sources
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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