@article{7866,
  author = {D. U. B. Aussems and D. Nishijima and C. Brandt and R. P. Doerner and N.J. Lopes Cardozo},
  title = {Spectroscopic characterization and imaging of laser- and unipolar arc-induced plasmas},
  abstract = {Tungsten plasmas induced by unipolar arcs were investigated using optical emission spectroscopy and imaging, and compared with laser-induced tungsten plasmas. The unipolar arcs were initiated in the linear-plasma simulator PISCES-A at UCSD under fusion relevant conditions. The electron temperature and density of the unipolar arc plasmas were in the range 0.5-0.7 eV and 0.7-2.0 x 10(20) m(-3), respectively, and increased with increasing negative bias voltage, but did not correlate with the surface temperature. In comparison, the electron temperature and density of the laser-induced plasmas were in the range 0.6-1.4 eV and 7 x 10(19)-1 x 10(22) m(-3), respectively.
},
  year = {2014},
  journal = {Journal of Applied Physics},
  volume = {116},
  pages = {063301},
  doi = {10.1063/1.4892675},
  language = {eng},
}