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Simple magnetic spectrometer for ions emitted from laser-generated plasma at 1010 W/cm2 intensity

Published online by Cambridge University Press:  22 May 2018

L. Torrisi  and
G. Costa
L. Torrisi*
Affiliation:
Dipartimento di Scienze Fisiche – MIFT, Università di Messina, V.le F.S. D'Alcontres 31, 98166 S. Agata, Messina, Italy
G. Costa
Affiliation:
Dipartimento di Scienze Fisiche – MIFT, Università di Messina, V.le F.S. D'Alcontres 31, 98166 S. Agata, Messina, Italy
*
Author for correspondence: L. Torrisi, Dipartimento di Scienze Fisiche – MIFT, Università di Messina, V.le F.S. D’Alcontres 31, 98166 S. Agata, Messina, Italy. E-mail: [email protected]
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Abstract

Plasmas were generated by 3 ns pulsed lasers at 1064 nm wavelength using intensities of about 1010 W/cm2 irradiating solid targets with a different composition. The ion emission was investigated with time-of-flight measurements giving information of the ion velocity, charge state generation, and ion energy distribution. Measurements use a coil to generate a magnetic field suitable to deflect ions toward a Faraday cup and/or a secondary electron multiplier.

Ion acceleration of the order of hundred eV per charge state, plasma temperature of the order of tens eV, charge states up to about 4+, and Boltzmann energy distributions were obtained in carbon, aluminum, and copper targets.

The presented results represent useful plasma characterization methods for many applications such as the new generation of laser ion sources, pulsed laser deposition techniques, and post ion acceleration systems.

Keywords

Laser-generated plasmamagnetic spectrometertime-of-flight measurements
Type
Research Article
Information
Laser and Particle Beams , Volume 36 , Issue 2 , June 2018 , pp. 163 - 170
Copyright
Copyright © Cambridge University Press 2018 

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