Results 21 to 30 of about 304,341 (284)

Precise measurements of the wavelength in KrCl laser spectral region (222 nm)

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2016
The technique for precise measurements of wavelengths in the range around 222 nm (45030 cm–1) has been presented. The reciprocal linear dispersion of the spectrometer was 0.529 Å/mm.
N.G. Zubrilin
doaj   +1 more source

Rapid Scanning of the Spectral Line Profile With [PDF]

open access: yesKirkuk Journal of Science, 2011
The problem of rapid scanning of spectral line profiles with help of Fabry-Perot Interferometer, and to investigate the physical parameters of these profiles is discussed.
Saalaar Z. Mohamed
doaj   +1 more source

Spectral Line Shapes of He I Line 3889 Å

open access: yesAtoms, 2014
Spectral line shapes of neutral helium 3889 Å(23S–33P) transition line are calculated by using several theoretical methods. The electronic contribution to the line broadening is calculated from quantum statistical many-particle theory by using ...
Banaz Omar   +8 more
doaj   +1 more source

Spectral Line Shapes in Plasmas II

open access: yesAtoms, 2019
The Spectral Line Shapes in Plasmas (SLSP) code comparison workshop series [...]
Evgeny Stambulchik   +3 more
doaj   +1 more source

A case study of HF radar spectra and 630.0 nm auroral emission in the pre-midnight sector [PDF]

open access: yesAnnales Geophysicae, 2001
A comparison of HF radar backscatter observed by the CUTLASS Finland radar, meridian scanning photometer data from Longyearbyen, magnetic field variations from IMAGE stations, and particle precipitation measured by the DMSP F12 spacecraft is presented.
M. Lester   +4 more
doaj   +1 more source

Spectral theory for nonconservative transmission line networks

open access: yesNetworks and Heterogeneous Media, 2011
The global theory of transmission line networks withnonconservative junction conditions is developed from a spectraltheoretic viewpoint. The rather general junction conditionslead to spectral problems for nonnormal operators.The theory of analytic ...
Robert Carlson
doaj   +1 more source

Three-Dimensional Reconstruction with a Laser Line Based on Image In-Painting and Multi-Spectral Photometric Stereo

open access: yesSensors, 2021
This paper presents a multi-spectral photometric stereo (MPS) method based on image in-painting, which can reconstruct the shape using a multi-spectral image with a laser line.
Liang Lu   +4 more
doaj   +1 more source

A method to achieve spectral beam combining based on a novel symmetric grating

open access: yesFrontiers in Physics, 2022
A symmetric grating is proposed to obtain higher output power in spectral beam combination by increasing the number of lasers and spectral utilization. The grating allows laser beams to be incident from both sides of the grating normal to achieve coaxial
Xinmin Fan   +18 more
doaj   +1 more source

Diagnostic features of rutile and cassiterite from heavy mineral concentrate samples, according to the IR microscopy data

open access: yesРуды и металлы
Based on the study of rutile and cassiterite grains, using Fourier transform infrared microscopy, a new method for their determination in heavy mineral concentrate samples has been developed.
Khachatryan G. K., Anashkina N. E.
doaj   +1 more source

Spectral Power Enhancement in a 100 GHz Photonic Millimeter-Wave Generator Enabled by Spectral Line-by-Line Pulse Shaping

open access: yesIEEE Photonics Journal, 2010
We report generation of high-modulation-depth photonic millimeter-wave (MMW) waveforms by applying line-by-line pulse shaping on a phase-modulated continuous-wave frequency comb.
F.-M. Kuo   +8 more
doaj   +1 more source

Home - About - Disclaimer - Privacy