The present paper deals with a model for obtaining the optimum performance conditions for the KrF laser. The model is based on the dominant formation, quenching and absorption processes. For a given excitation density the analysis predicts the maximum photon density rate that can be extracted from the cavity together with the corresponding optimum argon and krypton densities as a function of th...

The continuous mode-locked dye laser is beginning to assume a role of considerable importance as a tool for the study of ultra fast photochemical and photophysical processes. The purpose of this article is to describe methods of generation of ultra short pulses from argon or krypton ion laser pumped jet-stream dye lasers, some of the pulses properties, and to give examples of applications that ...

Branching fractions were measured for electric dipole transitions from the 5p upper levels to the 5s levels in neutral krypton atoms. The measurements were made with a wall-stabilized electric arc and a 2m monochromator for the spectral lines in the visible, and with a hollow cathode lamp and the NIST 2m–Fourier transform spectrometer for the lines in the near infrared. A semi-empirical calcula...

New surface and layering phase diagrams are proposed based on generalized sine-Gordon models with and without a substrate potential. In particular, we find that the preroughening transition can be driven first order, explaining “zipper” features in heat capacity data for argon and krypton on graphite substrates. For different parameters, we predict the existence of a novel variant of den Nijs’ ...

Two photon absorption laser induced fluorescence (TALIF) measurements of neutral hydrogen and its isotopes are typically calibrated by performing TALIF measurements on krypton with the same diagnostic system and using the known ratio of the absorption cross sections [K. Niemi et al., J. Phys. D 34, 2330 (2001)]. Here we present the measurements of a new calibration method based on a ground stat...

Coherent Rayleigh-Brillouin scattering (CRBS) in krypton at room temperature and moderate pressure has been studied experimentally. The experimental data is in good agreement with the theoretical lineshape developed by the authors. In this paper, we describe the details of the experiment. We also discuss the application of coherent Rayleigh-Brillouin scattering in gas diagnostics.

A comparative study of the relative efficacy of the krypton and argon lasers in the treatment of disc new vessels in diabetic retinopathy was made. Resolution of the disc new vessels was achieved in both instances. There were clinical differences in the use and effects of the 2 lasers.

The present study aimed to evaluate the efficacy of krypton laser photodynamic therapy (PDT) with PsD-007 for the treatment of oral mucosa dysplasia in 9,10-dimethyl-1,2-benzanthracene (DMBA)-treated hamsters. A DMBA-induced hamster cheek pouch model of precancerous lesions was created and the resultant 25 hamsters were divided into five groups. The right side was treated with PDT and the left ...

The beta-decay of Kr is a significant radioactive background for experiments that use liquified noble gases to search for dark matter and measure the low-energy solar neutrino flux. While there are several proposed methods for reducing Kr levels in these experiments, an independent technique is needed for measuring very low Kr levels. By selectively exciting Kr atoms to a metastable state, capt...