Influence of transverse magnetic field on expansion and spectral emission of laser produced plasma

The expansion of a copper laser produced plasma across a 320 mT magnetic field was investigated using time- and space-resolved optical emission spectroscopy. Time-of-flight Langmuir probe ion measurements were used to characterize the plume expansion in the absence of the magnetic field. The spectroscopy measurements reveal that the magnetic field gives rise to substantial confinement of the plasma emission. The field also leads to significant enhancement of the intensity of some of the neutral and ion emission lines.