Abstract

Investigation of optical emission from laser-produced plasma expanding across an external magnetic field is the subject of current interest and has its application in various field of research[1-2]. It is well known that various external parameters such as energy and wavelength of the laser, electric and magnetic field, and ambient condition, affects the plasma parameters and emission properties. The effects of magnetic field on the emission properties of laser-produced plasma have been studied earlier [1-2]. During the process of plasma expansion (deceleration in the presence of magnetic field), the kinetic energy of the plasma is totally transformed into thermal energy of the plasma as well as in the energy of the magnetic field. In this situation, the plasmas emission as well as its various other physical properties change. Effect of magnetic field on the emission from the laser-produced plasma has been studied by many authors from X-ray to visible wavelength range at different experimental conditions. Laser Induced Breakdown Spectroscopy (LIBS) is a laser based diagnostics technique, which has been used to study the atomic emission from various samples such as solid, liquid or gas [3]. In the light of the above discussion, it will be interesting to study the effect of a low intensity steady magnetic field on the LIBS signal from liquid as well as solid samples, which will be important for trace element analysis. In the present experiment we have studied the emission properties of the laser-produced plasma from the metal seeded liquid samples as well as aluminum alloy in the presence of magnetic field.

© 2002 Optical Society of America

PDF Article
More Like This
Optimization of Laser-Induced Breakdown Spectroscopy for Liquid Samples at Millijoule Pulse Energies

Mike Taschuk, Ying Tsui, and Robert Fedosejevs
WC4 Laser Induced Plasma Spectroscopy and Applications (LIBS) 2002

ENHANCEMENT IN THE SENSITIVITY OF LIBS USING MAGNETIC FIELD AND SEQUENSIAL DOUBLE LASER PULSE

V. N. Rai, A. Kumar, F. Y. Yueh, and J. P. Singh
ThE24 Laser Induced Plasma Spectroscopy and Applications (LIBS) 2002

ENVIRONMENTAL APPLICATION OF LASER INDUCED BREAKDOWN SPECTROSCOPY

Jagdish P. Singh and Virendra N. Rai
ThA1 Laser Induced Plasma Spectroscopy and Applications (LIBS) 2002

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription