Showing papers by "Goran Pichler published in 1986"
TL;DR: In this article, it was shown conclusively that the violet bands of sodium ( ≈ 425-460 nm) arise from the superposition of two distinct continuum emission bands - one singlet (2 1 Σ + u → X 1 ξ + g ) and one triplet (primarily 2 3 Π g → 1 3 ξ u + ).
50 citations
TL;DR: In this article, K 2 interference continuum fluorescence was observed for the first time using irradiation by either an Ar + laser line at 457.9 nm or a Kr + laser lines at 413.1 nm.
11 citations
TL;DR: In this paper, the authors investigated the nature of the diffuse band at 572.5 nm and found that the peak fluorescence intensity of this band has a square dependence on the exciting dye laser's intensity.
7 citations
TL;DR: In this article, the authors presented a device which modifies the heat-pipe oven in such a way that the molecular number density can be drastically reduced by inserting an independent internal heater into the center of the ordinary linear heatpipe oven, which serves as a reservoir of liquid metal.
Abstract: We present a device which modifies the heat-pipe oven in such a way that the molecular number density can be drastically reduced. The device is essentially a small chamber with an independent internal heater inserted into the center of the ordinary linear heat-pipe oven which, in turn, serves as a reservoir of the liquid metal. The advantage of the present design of superheating within the heat-pipe oven, where temperature differences of several hundreds degrees centigrade were obtained, is shown in the case of far blue wings of the first self-broadened potassium resonance lines.
7 citations
TL;DR: In this article, the absorption and emission spectra of very dense sodium vapour were measured between 790 nm and 1000 nm and the characteristic continuum structure at 882 nm was interpreted as a satellite band originating from the 1 3 Σ+g−13Σ+u transition.
7 citations
TL;DR: In this article, a dye-laser tuned over the self-broadened wings of the sodiumD-lines was used for the excitation of sodium dimer diffuse bands in the region from 400 nm to 455 nm.
Abstract: Dye-laser, tuned over the self-broadened wings of the sodiumD-lines, was used for the excitation of sodium dimer diffuse bands in the region from 400 nm to 455 nm. The fluorescence and selected excitation spectra for various spectral phenomena at different experimental conditions have been obtained and analyzed. The models for the qualitative explanation of the excitation mechanism are discussed.
4 citations
TL;DR: In this article, a tunable single mode ring dye laser was used to direct excitation of the potassium yellow diffuse band by means of a single mode dye laser and the excitation was performed across the whole region of the diffuse band while avoiding simultaneous excitations of discrete molecular bands.
Abstract: Direct excitation of the potassium yellow diffuse band was carried out by means of a tunable single mode ring dye laser. The excitation was performed across the whole region of the diffuse band while avoiding simultaneous excitation of discrete molecular bands. The fluorescence spectrum of the band was measured using a high resolution scanning monochromator.
2 citations