Results 11 to 20 of about 7,706,107 (291)

A Graph-Based Method for Molecular Spectral Line Identification

open access: yesIntelligent Computing
To address the high computational cost associated with molecular identification in spectral lines, we propose a graph-based feature learning framework to determine the molecular composition of spectral lines that incorporates rule-driven and node-level ...
Yijun Pan   +5 more
doaj   +2 more sources

Influence of Fuel–Air Ratio, Exhaust Temperature, and Atmospheric Absorption Effects on Infrared Spectral Features of Aero-Engine Wake [PDF]

open access: yesSensors
The infrared spectral features of aero-engine wake serve as a crucial basis for infrared detection, tracking, and identification of aircraft. Their spectral line structure is regulated by the concentration and temperature of the exhaust gases, as well as
Haonan Li   +5 more
doaj   +2 more sources

Spectuner: A Framework for Automated Line Identification of Interstellar Molecules [PDF]

open access: yesThe Astrophysical Journal Supplement Series
Interstellar molecules, which play an important role in astrochemistry, are identified using observed spectral lines. Despite the advent of spectral analysis tools in the past decade, the identification of spectral lines remains a tedious task that ...
Yisheng Qiu   +6 more
doaj   +3 more sources

New identifications of Fe XVII spectral lines in solar flares [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1985
The identifications of Fe XVII transitions between the 2s(2)2p(5)3s, 3p, and 3d configurations published by Jupen (1984) are reviewed. The review is based on examining spectroheliograms of solar flares obtained by a Naval Research Laboratory instrument on Skylab (S082-A).
J F Seely, G A Doschek, U Feldman
exaly   +2 more sources

Line identification in the Ca II K spectral region of sharp-lined B-type stars [PDF]

open access: yesAstronomy and Astrophysics, 2001
Previous Ca ii K observations of the B-type star HD 83206 have revealed putative high-velocity interstellar clouds (HVCs) at Local Standard of Rest (LSR) velocities of −80 and −110 km s−1. Similar results were also found for the sightline towards HD 135485.
C Trundle, K R Sembach
exaly   +2 more sources

Spectral Domain Low- Coherence Interferometry for On-line Surface Inspection [PDF]

open access: yes, 2013
We present an on-line surface measurement technique based on spectral domain low-coherence interferometry (SD-LCI), which can obtain a one dimensional surface profile with just one shot.
Gao, F., Jiang, Xiang, Tang, Dawei
core   +4 more sources

Spectral Line Identification in Photoionized Silicon Plasma Emission.

open access: yesProposed for presentation at the APS DPP 2020 held November 9-13, 2020 in Albuquerque, NM., 2020
Photoionized silicon plasma experiments were performed using the Z machine at Sandia National Laboratories. A spectrometer with high spectral resolution (λ/δλ~9200) was conceived to record emission from the expanding plasma. The data resolution is unprecedented for plasma emission and include detections of many previously unobserved spectral lines. The
Patricia B. Cho, Guillaume P. Loisel
openaire   +3 more sources

Charge identification for spectral lines in nitrogen [PDF]

open access: yesJournal of Physics B: Atomic and Molecular Physics, 1971
Spectral line emission from nitrogen ions, identifying charge by Doppler shift technique application to beam foil light ...
C Bashkin, G W Carriveau, H J Hay
openaire   +1 more source

Wavelengths and Energy Levels of the Upper Levels of Singly Ionized Nickel (Ni ii) from 3d 8(3 F)5f to 3d 8(3 F)9s

open access: yesThe Astrophysical Journal Supplement Series, 2023
Using high-resolution spectra of Ni ii recorded using Fourier transform (FT) spectroscopy of continuous, nickel–helium hollow cathode discharge sources in the region 143–5555 nm (1800–70,000 cm ^−1 , the analysis of 1016 Ni ii lines confirmed and ...
Christian P. Clear   +4 more
doaj   +1 more source

New spectral line identifications in high-temperature flares [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1987
Spectres d'une eruption solaire entre 7,8 et 10,0 A enregistres par le satellite SMM le 2 juillet ...
Fawcett, B   +3 more
openaire   +2 more sources

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