Sub-Doppler excitation spectroscopy in a collimated cold supersonic beam of 5% NO seeded in argon has been performed with a spectral resolution down to 10 MHz for four vibronic bands within the perturbed B ?X A system of NO . The rotational temperature of about 15 K achieved by adiabatic cooling allows the separation of closely lying vibronic bands which overlap in absorption spectra ...

Diamond films were deposited in an atmospheric-pressure radio-frequent3' plasma reactor. Hydrogen and methane were injected coaxially into the plasma as a high-velocity jet which impinged on the molybdenum substrate. In some cases argon was added to the reactant jet to increase its momentum, thereby reducing the boundary layer thickness, In most cases argon addition substantially improved diamo...

BACKGROUND Surface treatment by argon plasma is widely used as the last step of the manufacturing process of titanium implant fixtures before their sterilization by gamma rays. The possibility of using such a technology in the daily clinical practice is particularly fascinating. The aim of the present study was to assess the effects of the argon plasma treatment on different titanium implant su...

Argon plasma coagulation (APC) is the most widely available technique for ablation of Barrett’s esophagus. When the argon plasma is applied, thermal injury to the epithelium results. The depth of injury is the function of the voltage, the gas flow, and the pressure applied to the probe. A series of 32 patients with high-grade dysplasia were treated with APC with 34 months of follow-up. Dysplasia

This paper describes the measurements of ion temperatures in an argon plasma experiment. Three flux ropes were created in a quiet background plasma, and the method of laser induced fluorescence was used to map temperature gradients of the three flux ropes at different times. Ion temperatures were observed in the 1 6 eV range, and the heat diffused due to the gyro-radius of argon ions.

The dynamics of a nanosecond discharge with an extended hollow cathode in argon is studied and the electron energy distribution function (EEDF) plasma column calculated. issues formation EEDF inside cavity are considered. conditions validity two-term approximation analyzed appropriate evaluations given. Keywords: cathode, pulse discharge, argon, function.

very smooth thin films of iridium have been deposited on super polished fused silica (sio2) substrates using dc magnetron sputtering in argon plasma. the influence of deposition process parameters on film micro roughness has been investigated. in addition, film optical constants have been determined using variable angle spectroscopic ellipsometery, over the spectra range from vacuum ultraviolet...

Irradiation with low-temperature atmospheric-pressure plasma provides a promising method for chronic wound disinfection. To be efficient for this purpose, plasma should meet the following criteria: it should significantly reduce bacterial density in the wounded area, cause a long-term post-irradiation inhibition of bacterial growth, yet without causing any negative effect on human cells. In ord...

Early detection and treatment of preneoplastic lesions represents an obvious option to reduce morbidity and mortality from lung malignancies. Until now, radiological detection, sputum cytology, and autofluorescence have shown limited effectiveness as screening methods. Novel technologies such as Narrow Band Imaging (NBI) are showing promising results, but new studies are still needed to evaluat...