Results 11 to 20 of about 534 (173)

Upgrades to the MAVEN Echelle Data Reduction Pipeline: New Calibration Standard and Improved Faint Emission Detection Algorithm at Lyman‐α

Earth and Space Science, 2023
The Mars Atmosphere and Volatile Evolution (MAVEN) mission instrument suite includes an ultraviolet echelle spectrograph with high‐spectral resolution designed to resolve D and H Lyman‐α emissions.
M. Mayyasi, J. Clarke, J.‐L. Bertaux, J. Deighan, D. Bhattacharyya, M. Chaffin, S. Jain, N. Schneider, S. Curry   +8 more
doaj   +1 more source

Spectroscopic Orbits of Subsystems in Multiple Stars. IX

The Astronomical Journal, 2023
New spectroscopic orbits of inner subsystems in 14 hierarchies are determined from long-term monitoring with the optical echelle spectrometer, CHIRON.
Andrei Tokovinin
doaj   +1 more source

Silicon Nitride/Silicon Dioxide Echelle Grating Spectrometer for Operation Near 1.55 μm

IEEE Photonics Journal, 2018
Here we use an electron beam lithography system to pattern an ${\rm{S}}{{\rm{i}}_{3}}{{\rm{N}}_{4}}{\rm{/Si}}{{\rm{O}}_{2}}$ echelle grating using silver as a reflector on the grating grooves.
Shengjie Xie, Yang Meng, Joss Bland-Hawthorn, Sylvain Veilleux, Mario Dagenais   +4 more
doaj   +1 more source

High-Resolution Compact On-Chip Spectrometer Based on an Echelle Grating With Densely Packed Waveguide Array

IEEE Photonics Journal, 2019
We design a 121-channel on-chip spectrometer based on an echelle grating with densely packed waveguide array on 220-nm silicon-on-insulator platform.
Keqi Ma, Kaixuan Chen, Ning Zhu, Liu Liu, Sailing He   +4 more
doaj   +1 more source

CMOS-Compatible Integrated Spectrometer Based on Echelle Diffraction Grating and MSM Photodetector Array

IEEE Photonics Journal, 2013
We demonstrate an integrated spectrometer-on-a-chip composed of an echelle diffraction grating (EDG) and metal-semiconductor-metal (MSM) waveguide photodetector array based on silicon-on-insulator (SOI).
Xiao Ma, Mingyu Li, Jian-Jun He
doaj   +1 more source

AIRES: an airborne infrared echelle spectrometer for SOFIA [PDF]

SPIE Proceedings, 2007
The Stratospheric Observatory for Infrared Astronomy (SOFIA) will enable unique astronomical observations from visible to millimeter wavelengths. AIRES, a long-slit spectrograph with a mid-infrared slit viewing camera, would enable spectral imaging of gas-phase spectral features between 17 and 210 μm with resolving powers from ~60,000 to 5000.
Edwin F. Erickson, Michael R. Haas, Sean J. W. Colgan, Jessie L. Dotson, Janet P. Simpson, Erick T. Young   +5 more
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Depth profile CF LIBS analysis of the wall deposited layer in the COMPASS tokamak after LiSn testing campaign

Nuclear Materials and Energy, 2023
Plasma-facing materials in tokamak nuclear reactors are subject to intense heat and radiation. The design of liquid metal (LM) divertor walls has several advantages over the solid counterparts.
Sanath J. Shetty, Matej Veis, Sahithya Atikukke, Petr Bartoň, Martin Jeřáb, Renaud Dejarnac, Pavel Veis   +6 more
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Spectroscopic Studies of Early-type Stars with the Kourovka 1.2-m Telescope

Open Astronomy, 2016
We briey describe the characteristics of the 1.2-m telescope of Kourovka Observatory of the Ural Federal University, equipped with a fiber-optic echelle spectrometer, and report the results of spectroscopic studies of several early-type stars (CC Cas ...
Gorda S. Yu., Sobolev A. M., Bisyarina A. P., Zakharova P. E., Kuznetsov E. D.   +4 more
doaj   +1 more source

Investigation of low-temperature plasmas formed in low-density gases surrounding laser-produced plasmas

Nukleonika, 2023
Low-temperature plasma production is possible as a result of photoionization using high-intensity extreme ultraviolet (EUV) and soft X-ray (SXR) pulses. Plasma of this type is also present in outer space, e.g., aurora borealis.
Majszyk Mateusz, Bartnik Andrzej, Skrzeczanowski Wojciech, Fok Tomasz, Węgrzyński Łukasz, Szczurek Mirosław, Fiedorowicz Henryk   +6 more
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The Lick Observatory Hamilton Echelle Spectrometer [PDF]

Publications of the Astronomical Society of the Pacific, 1987
The Hamilton Echelle Spectrometer, recently installed at the coudé focus of the Shane 3-m telescope, is a high dispersion spectrograph optimized for use with large format CCD's. It was designed primarily for high resolution (R=50,000) wide bandpass spectroscopy of point-like sources down to a limiting magnitude of about V=16.5, over the 0.34 μm to 1.1 ...
openaire   +1 more source