Emission characteristics and dynamics of C2 from laser produced graphite plasma

Late-time particle emission from laser-produced graphite plasma

We report a late-time “fireworks-like” particle emission from laser-produced graphite plasma during its evolution. Plasmas were produced using graphite targets excited with 1064 nm Nd: yttrium aluminum garnet (YAG) laser in vacuum. The time evolution of graphite plasma was investigated using fast gated imaging and visible emission spectroscopy. The emission dynamics of plasma is rapidly changin...

Characteristics of Ions Emission from Ultrashort Laser Produced Plasma

The dynamic characteristics of the ions emitted from ultrashort laser interaction with materials were studied. A series of successive experiments were conducted for six different elements (C, Al, Cu, Mo, Gd, and W) using 40 fs, 800 nm Ti: Sapphire laser. Time-of-flight (TOF) ion profile was analyzed and charge emission dependencies were investigated. The effects of incident laser interaction wi...

Fine structure in the time of flight distribution of C2 in laser produced plasma from graphite

Time resolved optical emission spectroscopy is employed to study the expansion dynamics of C2 species in a graphite plasma produced during the Nd : YAG ablation. At low laser fluences a single peak distribution with low kinetic energy is observed. At higher fluences a twin peak distribution is found. It has been noted that these double peak time of flight distribution splits into a triple peak ...

Emission characteristics and dynamics of neutral species in a laser-produced tin plasma

We investigated the emission features of tin neutrals in a laser-ablated tin plasma using time and space resolved optical emission spectroscopy. The tin plume was generated by focusing 1064 nm, 10 ns pulses from a Nd : YAG laser on a tin slab target placed in a vacuum chamber. We examined the properties of the tin neutrals at various spatial locations from the target surface and at different la...

X-ray Emission Spectra from Laser-produced Cobalt Plasma