Results 61 to 70 of about 200,551 (195)

Compact high-resolution echelle-AOTF NIR spectrometer for atmospheric measurements

, 2018
A new concept of a high-resolution near-IR spectrometer consisting of an echelle grating combined with an acousto-optic tunable filter (AOTF) for separation of diffraction orders, is developed for space-borne studies of planetary atmospheres.
Vinogradov, I.I., Durry, G., Bertaux, J.-L., Neefs, E., Korablev, O.I., Kalinnikov, Y.K., Nevejans, D., Le Barbu, T.   +7 more
core   +1 more source

Elemental Analysis of Catalysts in a Fixed‐Bed Reactor by Laser‐Induced Breakdown Spectroscopy

ChemCatChem, Volume 17, Issue 21, November 10, 2025.
The “Elemental Composition” provides information about promoters and poisons found in heterogeneous catalysts. Access to this piece of information under reaction conditions remains yet an unsolved challenge. This work explores the potential and limitations of laser‐induced breakdown spectroscopy (LIBS) as an in situ reactor diagnostic technique ...
Diego Espinoza, Hemanth Appala, Oliver Korup, Raimund Horn   +3 more
wiley   +1 more source

Discovery of a Nearby Habitable Zone Super-Earth Candidate Amenable to Direct Imaging

The Astronomical Journal
We present the discovery of GJ 251 c, a candidate super-Earth orbiting in the habitable zone (HZ) of its M dwarf host star. Using high-precision Habitable-zone Planet Finder and NEID RVs, in conjunction with archival RVs from the Keck I High Resolution ...
Corey Beard, Paul Robertson, Jack Lubin, Eric B. Ford, Suvrath Mahadevan, Gudmundur Stefansson, Jason T. Wright, Eric Wolf, Vincent Kofman, Vidya Venkatesan, Ravi Kopparapu, Roan Arendtsz, Rae Holcomb, Raquel A. Martinez, Stephanie Sallum, Jacob K. Luhn, Chad F. Bender, Cullen H. Blake, William D. Cochran, Megan Delamer, Scott A. Diddams, Michael Endl, Samuel Halverson, Shubham Kanodia, Daniel M. Krolikowski, Andrea S. J. Lin, Sarah E. Logsdon, Michael W. McElwain, Andrew Monson, Joe P. Ninan, Jayadev Rajagopal, Arpita Roy, Christian Schwab, Ryan C. Terrien   +33 more
doaj   +1 more source

Bubbling Water‐Treating DBD Plasma Device Optimization Using Experimental and Computational Methods

Plasma Processes and Polymers, Volume 22, Issue 5, May 2025.
A dry air atmospheric pressure volume dielectric barrier discharge is employed to fix nitrogen in water. Producing nitrate for use as nitrogen fertilizer is the primary motivation. A 0D chemistry model is developed and informed by the electrical, and geometric characteristics of the device and the plasma gas temperature.
Conner D. Robinson, Nicholas L. Sponsel, Katharina Stapelmann   +2 more
wiley   +1 more source

Origins of Super Jupiters: TOI-2145b has a Moderately Eccentric and Nearly Aligned Orbit

The Astronomical Journal
Super Jupiters are giant planets with several Jupiter masses. It remains an open question whether these planets originate with such high masses or grow through collisions.
Jiayin Dong, Ashley Chontos, George Zhou, Gudmundur Stefansson, Songhu Wang, Chelsea X. Huang, Arvind F. Gupta, Samuel Halverson, Shubham Kanodia, Jacob K. Luhn, Suvrath Mahadevan, Andrew Monson, Jaime A. Alvarado-Montes, Joe P. Ninan, Paul Robertson, Arpita Roy, Christian Schwab, Jason T. Wright   +17 more
doaj   +1 more source

Development of a spatial heterodyne Raman spectrometer with echelle-mirror structure

Optics Express, 2018
Spatial heterodyne Raman spectroscopy is a spectroscopic detection technique that is particularly suitable for Raman measurements. The spectral range of traditional spatial heterodyne Raman spectrometer (SHRS) is limited by its spectral resolution and the number of detector elements.
Jun Qiu, Xiangdong Qi, Xiaotian Li, Zhenyu Ma, null Jirigalantu, Yuguo Tang, Xiaotao Mi, Xiaoming Zheng, Rui Zhang, null Bayanheshig   +9 more
openaire   +2 more sources

Optical Alignment and Diffraction Analysis for AIRES: An Airborne Infrared Echelle Spectrometer

, 2002
The optical design is presented for a long-slit grating spectrometer known as AIRES (Airborne InfraRed Echelle Spectrometer). The instrument employs two gratings in series: a small order sorter and a large steeply blazed echelle.
Fonda, Mark, Haas, Michael R.
core  

The planet search program at the ESO Coudé Echelle spectrometer

, 2001
In this article we present the results of the planet search program carried out at the ESO Coudé Echelle Spectrometer (CES) for components A and B of the α Centauri system.
M. Endl, A. P. Hatzes, M. Kürster, S. Els, W. D. Cochran   +4 more
core   +1 more source

Impact of the assimilation of ozone from the Tropospheric Emission Spectrometer on surface ozone across North America [PDF]

, 2009
We examine the impact of assimilating ozone observations from the Tropospheric Emission Spectrometer (TES) on North American surface ozone abundances in the GEOS-Chem model in August 2006.
Parrington, M., Thompson, A. M., Jones, D. B. A., Witte, J. C., Bowman, K. W., Millet, D. B., Leblanc, T., Merrill, J., Oltmans, S. J., Tarasick, D. W., Jones, D. B.A.   +10 more
core   +1 more source

The ∼50 Myr Old TOI-942c is Likely on an Aligned, Coplanar Orbit and Losing Mass

The Astronomical Journal
We report the observation of the transiting planet TOI-942c, a Neptunian planet orbiting a young K-type star approximately 50 Myr years old. Using the Keck/High Resolution Echelle Spectrometer, we observed a partial transit of the planet and detected an ...
Huan-Yu Teng, Fei Dai, Andrew W. Howard, Howard Isaacson, Ryan A. Rubenzahl, Isabel Angelo, Alex S. Polanski   +6 more
doaj   +1 more source