@article{25211,
  keywords = {usa, emission, pulse, power, behavior, ablation, laser, laser ablation, laser-ablation, spectroscopy, vaporization, time, beam, ca, e, inductively coupled plasma, inductively-coupled-plasma, mass, mass-spectrometry, plasma, ablated mass, atomic emission, atomic emission spectroscopy, atomic-emission, brass, emission spectroscopy, emission-spectroscopy, lasers, process, properties, property, ratio, zn, elemental analysis, excimer, excimer-laser, mechanism, mechanisms, nd:yag, stoichiometry, picosecond laser, density, thermal, thermal vaporization, ablation process, duration, laser ablation process, nd:yag laser, pulse duration, solid samples, laser beam, laser power density, nanosecond laser, wavelength, excimer laser, pulse width, region, preferential vaporization, rich, us},
  author = {Xianglei Mao and Adeline C Ciocan and Richard E Russo},
  title = {Preferential vaporization during laser ablation inductively coupled plasma atomic emission spectroscopy},
  abstract = {<p>The Zn-to-Cu ratio in brass was measured by laser ablation inductively coupled plasma atomic emission spectroscopy. The influence of laser beam properties (pulse width, wavelength, and power density) on fractional laser ablation was investigated. The behavior of the Zn/Cu ratio vs, laser power density shows that there are different mechanisms influencing ps and us laser ablation. With the use of a 30 ns pulse duration from an excimer laser, thermal vaporization appears to be the dominant process in the low-power density region. The Zn/Cu ratio approaches stoichiometry at higher power density, but the ablated mass still remains Zn rich. With a 35 ps pulse Nd:YAG laser, a nonthermal mechanism appears to govern the laser ablation process. When a 3 ns Nd:YAG laser is used, both thermal and nonthermal processes exist. For both 3 us and 30 ps Nd:YAG lasers, stoichiometric ablation can be achieved at higher power densities</p>},
  year = {1998},
  journal = {Applied Spectroscopy},
  volume = {52},
  pages = {913-918},
  note = {<p>LBNL-41833 NOT IN FILE</p>},
  language = {eng},
}