The emission of ions from laser-produced carbon plasmas is investigated by a deconvolution of ion collector signals. The deconvolution is based on the use of Kelly and Dreyfus function expressing the time-resolved ion current to recover hidden peaks in an ion collector signal. The parameters of recovered C q + (1le;= q le;=6) currents make possible the quantification of properties of laser-produced plasmas. The drift and peak velocities of C q + ions, the abundance of ions and the plasma temperature are presented in the dependence on focused laser beam energy. The carbon plasma was generated employing either single 9-ns pulses of second harmonics (532 nm) of Nd:YAG laser or pulses repeated at a stable repetition rate of 30 Hz.
Bibliographical noteFunding Information:
This work was partly supported by the Academy of Sciences of the Czech Republic (project AV0Z10100523).
Copyright 2008 Elsevier B.V., All rights reserved.
- Carbon ions
- Ion collector
- Ion energy distribution
- Laser-produced plasma
- TOF spectra deconvolution
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Materials Science(all)
- Condensed Matter Physics