Influence of SF₆ on the Broadening and Shift of the 535.0 nm Thallium Line

Abstract

The pressure broadening and shift of the 535.0 nm Tl line resulting from the photodissociation of thallium iodide mixed with sulfur hexafluoride were studied at low densities using a Fabry-Perot interferometer. A linear variation of both the width and shift of the line with the SF

A Highly Resolved Yibronic Spectra of Dioxido-p-terphenyl and Trioxido-p-quaterphenyl in n-Hexanc at 77 K

“…thallium lamp operated at 100 Mc/s. The methods of line profile analysis were the same as those in our previous works [1][2][3][4][5]. We have found that the resultant profile of the 535.0 nm T1 line of thallium iodide molecules can be fitted sufficiently well to a Voigt profile which is the convolution of the Lorentzian and Gaussian distribution.…”

“…1 the shift A of the 535.0 nm T1 line, which is towards the red, is a linear function of the nitrogen density: A=AQ-\-6N, where d is the pressure shift coefficient and AQ is the residual shift for the Til cell with no perturbing gas. The least-squares analysis yielded the value <5 = (-3.00±0.098) X 10-20 cm _1 /molecule cm- 3 .…”

“…In previous papers [1][2][3][4][5] results of a detailed study of the effects of various foreign gases such as noble gases, hydrogen, deuterium and carbon dioxide on the thallium fluorescence line 535.0 nm (7 2 SI/2 -6 2 P3/2) were reported. This note describes an extension of these investigations to measurements of the shape, width and shift of the same T1 line perturbed by nitrogen.…”

“…This note describes an extension of these investigations to measurements of the shape, width and shift of the same T1 line perturbed by nitrogen. Reference is made to our earlier papers [1,5] for experimental details and nomenclature.…”

“…According to the results so far published on the Shpolskii spectra, vibronic spectra of oxido-pbiphenyl belong to the highest resolved ones [1][2][3][4]. Oxido-substituted p-oligophenylenes are very interesting from the point of view of their application in scintillation techniques [5][6][7].…”