Characteristics of a simple and compact spectral light source for obtaining the spectra highly ionized gases are presented. Krypton xenon spectrograms have been produced which show lines belonging to high degree ionization.

Context. For the spectral analysis of spectra hot stars with a high resolution and signal-to-noise ratio (S/N), advanced non-local thermodynamic equilibrium (NLTE) model atmospheres are mandatory. These strongly dependent on reliability atomic data that used for their calculation.

Studies of emission spectra noble gas ions have been carried out in La Plata for more than 35 years, several them collaboration with other groups. Knowledge the wavelengths, intensities and shapes lines different species neon, argon, krypton xenon intermediate high degrees ionization is important not only to study plasma conditions, but also help understanding laser mechanisms. With purpose continuing this line work we present an overview some studies concerning spectral analysis gases...

A capillary discharge tube was used to record the Xe spectrum in 400–5500 Å region. set of 243 lines vi observed, and 146 them were classified for first time. For all known lines, we calculated weighted oscillator strengths (gf) transition probabilities (gA) using configuration interaction a relativistic Hartree–Fock approach. The energy matrix parameters adjusted fit experimental levels. Core polarization effects taken into account our calculations. Experimental values lifetimes are also...

The spectrum of five times ionized argon, (Ar VI), has been observed in the 280-2100 Å wavelength range. Eighty-seven lines have identified as transitions between levels 3s23p, 3s3p2, 3s23d, 3p3, 3s3p3d, 3s24s, 3s24d and 3s3p4s configurations. For 33 classification is new. Forty-one energy level values belonging to these configurations were analyzed we propose 9 new for corresponding odd parity are interpreted by fitting theoretical expressions using leastsquares techniques. parameter...

A new analysis of the aluminium-like five times ionized argon (Ar VI) spectrum in vacuum ultraviolet region is reported this paper. Two adjusted and 14 energy levels 68 classified lines between configurations 3s23p, 3p3, 3s3p3d, 3s24p 3s3p2, 3s2(3d+4d+5d), 3s25s, 3p23d, 3s3d2 were obtained. Atomic calculation using HFR program was also used analysis.

Calculated lifetimes for 12 new energy levels belonging to the 5s25p6d and 5s25p7s configurations weighted oscillator strengths transition probabilities 81 classified lines are presented. The involved in these transitions were 5s25p6p, 5s25p4f 5s5p3, 5s25p5d, 5s25p6d, 5s25p6s, even odd parities, respectively. Relativistic Hartree–Fock multiconfigurational Dirac–Fock calculations used. Least-squares-fitted parametric have been carried out interpret observed spectrum. all spectral also...

In this work, we report estimates of the temperature and electron density titanium plasmas using time-resolved laser-induced breakdown spectroscopy (LIBS) methods results Hartree–Fock relativistic (HFR) calculations Ti II transition probabilities. Plasmas were generated on certified grade-1 samples, with 532-nm laser radiation pulses from a Nd:YAG energies 18, 28, 38, 48 mJ. Spectra recorded delay times between 0.5 6.5 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...

The emission characteristics of an ultraviolet-visible pulsed multi-ionic xenon laser were studied through time-resolved spectroscopy and the results interpreted using a collisional-radiative theoretical model. This analysis includes more than 20 lines belonging to several ionic species (Xe III-VIII). Depending on experimental conditions, different temporal distributions their corresponding spontaneous emissions can be observed. In particular, presents oscillations near threshold. Pumping...

Abstract The spectrum of triply ionized neon, Ne IV, emitted by pulsed light sources has been studied. Ninety‐three new classified lines are reported, and the wavelengths 99 previously observed improved. Using these data, it was also possible to determine 7 energy levels adjust value for 32 reported levels. Keywords: Atomic spectravisible ultraviolet spectraproperties atoms atomic ions Acknowledgments We gratefully acknowledge Consejo Nacional de Investigaciones Científicas y Técnicas...

Twenty-one new experimental energy levels belonging to the 4d96p, 4d94f and 4d95f configurations of Xe IX are presented. They have been deduced from 75 newly classified lines involving 4d95p, 4d94f, 4d95d, 4d95s, 4d96s for odd even parities, respectively. The radiative lifetimes these as well weighted oscillator strengths transition probabilities all observed spectral calculated with optimized parameters a least-squares fitting procedure applied in framework relativistic Hartree–Fock method...

This article presents a review concerning the spectral analysis of several ions neon, argon, krypton and xenon, with impact on laser studies astrophysics that were mainly carried out in our collaborative groups between Argentina Brazil during many years. The spectra recorded from vacuum ultraviolet to infrared regions using pulsed discharges. Semi-empirical approaches relativistic Hartree–Fock Dirac-Fock calculations also included these investigations. produced new classified lines energy...