First-order many-body theory was modified to include correlation effects in the target description and used calculate differential cross sections, coherence, parameters for electron-impact excitation of 3${\mathrm{}}^{1}$P 3${\mathrm{}}^{3}$P states magnesium at incident energies 20, 30, 40, 50, 100 eV. The results are analyzed compared with available theoretical experimental results.

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...

The spectrum of Kr vi has been observed in the 450--1000-A\r{} wavelength range, and 15 lines have identified as transitions between levels 4${s}^{2}$4p, 4s4${p}^{2}$, 4${s}^{2}$4d, 4${s}^{2}$5p configurations. For seven classification is new. All but three 14 that belong to configurations determined. result this analysis supported by isoelectronic comparisons along Ga sequence. are interpreted fitting theoretical energy parameters with use least-squares techniques.

This document describes a study of tunable frequency selective surface (FSS) for applications in reconfigurable intelligent (RIS) with millimeter wave beamforming, the Fifth generation mobile networks (5G). The work developed square loop that changes its reflection coefficient and phase shift controlled by PIN diodes. was based on simulation two unit cells, 1-bit FSS 2-bit FSS, designed ANSYS HFSS. Simulated results obtained difference 123.10° 177.48° at 26.25 GHz.

The spectrum of three times ionized argon (Ar IV), has been observed in the 280-5000 Å wavelength range. In previously reported energy level system for 3s3p4, 3s23p23d and 3s23p24s configurations, levels were rejected, J-values two altered LS-designations eight revised. Eight new have added to even parity system, completing 36 values 44 possible these configurations. We also confirm 20 21 26 3s23p3 3s23p24p configurations are interpreted by fitting theoretical expressions using a...

The spectrum of triply ionized xenon (Xe iv) has been observed in the region 570--6900 \AA{}. configurations 5${\mathit{s}}^{2}$5${\mathit{p}}^{2}$5d and 5${\mathit{s}}^{2}$5${\mathit{p}}^{2}$6s have studied energy levels reported for these by Moore [Atomic Energy Levels, Natl. Bur. Stand. Ref. Data Ser., (U.S.) Circ. No. 467 (U.S. GPO, Washington, D.C., 1971)] were revised extended to include seven new levels. configuration 5s5${\mathit{p}}^{4}$ was included analysis take into account...

A FTHETA-pinch light source has been used to observe the spectrum of krypton ionized four times (Kr v) in vacuum-ultraviolet region (432--2000 A\r{}), and 50 lines have identified as combinations between levels 4${s}^{2}$4${p}^{2}$, 4s4${p}^{3}$, 4${s}^{2}$4p4d configurations. For 19 classification is new. All but 27 that belong configurations determined. The energy parameters were obtained using Hartree-Fock calculations. are interpreted by fitting theoretical expressions observed...

The weighted oscillator strengths (gf) and lifetimes for S viii presented in this work were obtained by a multiconfigurational Hartree–Fock relativistic approach. In calculation, the electrostatic energy parameters optimized least-squares procedure order to improve adjustment experimental levels. values gf then calculated on basis of these adjusted parameters. New classifications are proposed levels belonging 4s 4d configurations lines related them.

Abstract A capillary discharge tube was used to record the Ar spectrum in region of 330–4400 Å. We analyzed a set 109 lines v , with 10 them being classified for first time. Part these newly identified (six total) corresponds electric dipole transitions visible and ultraviolet regions spectrum. calculated weighted transition rates ( gA ) all experimentally observed corresponding lifetimes using relativistic Hartree–Fock method configuration interaction. The equations were modified consider...

A high-voltage power supply suitable to feed a pulsed laser is developed. The circuit series resonant converter parallel loaded, working at the frequency. voltage source inverter that feeds soft-commutated. switching frequency limited few kHz by response of rectifiers. Experimental results on 1 kV/250 W prototype are presented in order verify behavior. Design procedure, simulation and presented.

The spectrum of Kr vi was recorded in the 23–254-nm-wavelength range, resulting 109 new line classifications. From these data we were able to identify 22 energy levels belonging 4s4p4d and 4s4p5s configurations. 4s25p 4s24f configurations 4s4p2 2S1/2 4p3 2P1/2 have values proposed. results are supported by isoelectronic extrapolation multiconfiguration Hartree–Fock calculations with relativistic corrections. experimental obtained from a capillary-discharge tube theta-pinch light sources.

A pulsed discharge light source to study the six and seven times ionized xenon spectra in 419–4642 Å region was used. set of 40 transitions Xe VII 25 VIII were classified for first time. We revised values previously known energy levels extended analysis 10 new belonging 5s6d, 5s7s 5s7p, 4d 9 5s 2 5p even odd configurations, respectively. Seven core excited configuration 5s5d are presented. For prediction atomic parameters, levels, transition, relativistic Hartree–Fock calculations

Three-times ionized xenon Xe IV spectrum in the 1070–6400 Å region was analyzed using a pulsed discharge light source. A set of 163 transitions classified for first time, and 36 new energy levels belonging to 5s25p26d 5s25p27s even configurations were determined. The relativistic Hartree–Fock method, including core-polarization effects, used. In these calculations, electrostatic parameters optimized by least-square procedure order improve adjustment experimental levels. We also present...

The thirteen times ionized tungsten is isoelectronic with PmI. Wavelengths and transition probabilities for the 5s-5p 5p-5d transitions of WXIV, identifying ground state as 4f13 5s2 2F7/2 were calculated. Both, a relativistic Hartree Fock approach, including core-polarization effects, purely multiconfiguration Dirac-Fock method used calculations. Particularly, compared experimental results obtained VUV electron beam ion trap (EBIT) spectroscopy.