Results 11 to 20 of about 7,202 (193)

Plasma Spectroscopy on an Aluminum-Pellet Ablation Cloud in an LHD Plasma with an Echelle Spectrometer

Atoms, 2020
We developed an echelle spectrometer for the simultaneous observation of the whole visible range with a high instrumental resolution, for example, 0.055 nm (full width at the half maximum) at 400 nm and 0.10 nm at 750 nm.
Hirotaka Tanaka, Keisuke Fujii, Taiichi Shikama, Shigeru Morita, Motoshi Goto, Masahiro Hasuo   +5 more
doaj   +1 more source

Fast High Resolution Echelle Spectroscopy Of A Laboratory Plasma [PDF]

, 2006
An echelle diffraction grating and a multianode photomultiplier tube are paired to construct a high resolution (R=lambda/delta lambda approximate to 2.5x10(4)) spectrograph with fast time response for use from the UV through the visible.
Brown, Michael R., Cothran, C. D., Fung, Jerome, , \u2706, Schaffer, M. J.   +3 more
core   +3 more sources

Concept and optical design of the cross-disperser module for CRIRES [PDF]

, 2014
This is the peer reviewed version of the following article: Oliva, Ernesto, A. Tozzi, D. Ferruzzi, L. Origlia, A. Hatzes, R. Follert, T. Loewinger et al.
Anglada-Escude, G, Baade, D, Bristow, P, Delabre, B, Dorn, RJ, Ferruzzi, D, Follert, R, Gojak, D, Grunhut, J, Hatzes, A, Heiter, U, Hilker, M, Ives, DJ, Jung, Y, Kaeufl, HU, Kerber, F, Klein, B, Lizon, JL, Lockhart, M, Loewinger, T, Marquart, T, Oliva, E, Origlia, L, Pasquini, L, Paufique, J, Piskunov, N, Pozna, E, Reiners, A, Seemann, U, Smette, A, Smoker, J, Stempels, E, Tozzi, A, Valenti, E   +33 more
core   +2 more sources

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

Sub-pixel Spectral Reduction Algorithm for Echelle Spectrometer [PDF]

, 2021
Abstract A sub-pixel spectral reduction algorithm for the echelle spectrometer is proposed here to ensure a high spectral resolution for it. The initial model is established by separating cross-dispersion and calculating the imaging offset from the center.
JIN YANG, Lu Yin, CI SUN, MINGJIA WANG, SHULONG FENG, NAN SONG   +5 more
openaire   +1 more source

Improved Log(gf) Values for Lines of Ti I and Abundance Determinations in the Photospheres of the Sun and Metal-Poor Star HD 84937 (Accurate Transition Probabilities for Ti I) [PDF]

, 2013
New atomic transition probability measurements for 948 lines of Ti I are reported. Branching fractions from Fourier transform spectra and from spectra recorded using a 3 m echelle spectrometer are combined with published radiative lifetimes from laser ...
Cowan, John J., Guzman, A., Lawler, James E., Sneden, Christopher, Wood, M. P.   +4 more
core   +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

NEWS: the near-infrared Echelle for wideband spectroscopy [PDF]

, 2016
We present an updated optical and mechanical design of NEWS: the Near-infrared Echelle for Wide-band Spectroscopy (formerly called HiJaK: the High-resolution J, H and K spectrometer), a compact, high-resolution, near-infrared spectrometer for 5-meter ...
Hall, Zachary, Muirhead, Philip, Taylor, Brian, Veyette, Mark, Ye, Jimmy   +4 more
core   +2 more sources

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

Demonstration of a Near-IR Laser Comb for Precision Radial Velocity Measurements in Astronomy [PDF]

, 2015
We describe a successful effort to produce a laser comb around 1.55 $\mu$m in the astronomical H band using a method based on a line-referenced, electro-optical-modulation frequency comb.
C. Beichman, E. C. Martin, E. Furlan, G. Doppmann, G. Vasisht, G. Ycas, J. Gagne, J. Li, J. Sandhu, K. Vahala, M. Bottom, M. P. Fitzgerald, P. Chen, P. Gao, P. Plavchan, S. Diddams, S. Leifer, X. Yi   +17 more
core   +3 more sources