[en] Suppression of baseline artifacts in ¹H NMR spectroscopy of diluted aqueous solutions has been discussed. The time-domain technique capable of eliminating or lowering the baseline distortions in the spectra caused by the ringing of low pas filters has been proposed. Simultaneously, the problem of proper adjusting of the start of data acquisition have been discussed

[en] The asymmetry NQR spectroscopy has been used for measurement of asymmetry parameter of electric field gradient tensor in 2,4-D (2,4-dichlorophenoxy acetic acid) herbicide at 77 K. The information obtained is very important for the study of electronic structure and electronic effects in interested group of organic molecules

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No abstract available

[en] In this report, the author will review the progress made in his studies of ion rotational distributions resulting from resonance enhanced multiphoton ionization of excited electronic states and from single-photon ionization of ground electronic states of jet-cooled molecules by coherent VUV and XUV radiation. To do so he will select a few examples from his studies which serve to highlight his progress and to identify the background and significance of the specific spectral features and systems he has chosen to study

[en] Vacuum ultraviolet (VUV) photoionization mass spectrometry has been used extensively to determine the energetics of neutral radicals and radical cations, as well as to study the dynamics of the dissociative photoionization process. Very often these measurements are concerned with determining the appearance energy (AE) for a dissociative ionization process, as well as determining the heats of formation of the species involved. One such photoionization mass spectrometric technique employed on End Station 2 of the Chemical Dynamics Beamline (9.0.2.2) at the Advanced Light Source is the threshold photoelectron-photoion coincidence (TPEPICO) method. TPEPICO involves measuring the time-of-flight (TOF) mass spectrum of a given cation in coincidence with threshold photoelectrons at a known photoionization energy

[en] The angular distributions of photoelectrons produce during photo-decay of negative ion in bichromatic electromagnetic field consisting from multiple harmonics of circular polarized laser electromagnetic fieldpropagating in one direction are studied. In the frame of perturbation theory on electromagnetic interaction and zero radius potential model for negative ion the analytical expressions for amplitudes and probabilities were obtained

No abstract available

[en] The conversion efficiencies and the linewidth of the Stokes components which result from stimulated Raman scattering in hydrogen gas pumped with a high power alexandrite laser have been studied. Measurements of the Stokes components under varying conditions reveal that there is no effect on the conversion efficiency by the narrowing of the pump linewidth and that the linewidth of the first Stokes component is broader than the expected linewidth of the injection seeded pump. Modelling of the conversion from the pump to the Stokes components shows a strong dependence of this conversion on a specific, resonant four wave mixing process. (author)

[en] For the first time the hyperfine splitting magnetic structure transition is resolved by the saturated absorption method using external absorption I₂ cell in longitudinal magnetic field. The g-factors of the levels are determined. The quadratic Zeeman effect contribution to the magnetic sublevel shift is observed experimentally. Theoretical evaluation of the frequency shift of the saturation resonances in magnetic field is made. (author)