Inhaltszusammenfassung

Spectroscopic and analytical properties of a trace analytical method using multi-step resonance ionization at high laser intensities (>kW/cm(2)) have been investigated with gadolinium as it test element. Strongly saturated transitions are observed, which have been used for a temperature determination of the atoms in the laser ablated plume. Regimes of multi-step resonance ionization and multiphoton ionization Could be distinguished, Analytical performances due to resonance enhancement ...Spectroscopic and analytical properties of a trace analytical method using multi-step resonance ionization at high laser intensities (>kW/cm(2)) have been investigated with gadolinium as it test element. Strongly saturated transitions are observed, which have been used for a temperature determination of the atoms in the laser ablated plume. Regimes of multi-step resonance ionization and multiphoton ionization Could be distinguished, Analytical performances due to resonance enhancement and resulting discrimination against non-resonant background, precision in isotope ratio determination and overall detection efficiency are discussed. (c) 2005 Published by Elsevier B.V.» weiterlesen» einklappen

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Klassifikation

DDC Sachgruppe:
Physik