Laser-Induced Negative Ionization: The SF6 + Ba Surface Reaction

EXCITATION AND IONIZATION OF LASER-PUMPED Ba VAPOUR

Laser-assisted and laser-induced electron-impact ionization during nonsequential double ionization of He

Two-electron sum-momentum distributions from nonsequential double ionization of He in an intense laser field are analyzed. The results of a S-matrix calculation show that the inelastic scattering of the first electron with the residual ion is best considered as a ~internal! laser-induced impact ionization. The parallel component of the sum momentum is found to be largest when the prescattering ...

Doppler effect in fluorine K-Auger line produced in electron-induced core ionization of SF6.

An experimental evidence is reported on the observation of the Doppler effect in fluorine K-Auger line emitted from a core-ionized SF6 molecule under an impact of 16 keV electrons. The emitting source of the Auger line is found to acquire a kinetic energy of 4.7+/-0.3 keV. We propose that such large energy is released from the Coulomb repulsion taking place between F+ and SF5+ fragment ions und...

Laser-induced isotopic selectivity in the resonance ionization of Os

Isotope selective effects in resonance ionization mass spectrometry (RIMS) pose a potentially serious limitation to the application of this technique to the precise and reproducible measurement of isotope ratios. In order to identify some of the underlying causes of isotope selectivity in RIMS and to establish procedures for minimizing these effects, we investigated laser-induced isotope select...

Tea Identification through Surface-Assisted Laser Desorption/Ionization Mass Spectrometry

We have applied surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS) using titanium dioxide nanoparticles (TiO2 NPs) as the matrix and captopril (CAP) as internal standard for the determination of the concentrations of theanine and four catechins—catechin, ()-epigallocatechin (EGC), ()-epicatechin gallate (ECG), and ()-epigallocatechin gallate (EGCG). Under the optimal cond...