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1,029 results for “Absorption”
CRDS absorption spectra recorded for the P(16) and P(28) transitions of the 20012-00001 band, and the R(24) and R(30) transitions of the 20013-00001 band of 12CO2 in air
<p>The database is made of the set of the CRDS absorption spectra recorded for the P(16) and P(28) transitions of the 20012-00001 band, and the R(24) and R(30) transitions of the 20013-00001 band of 12CO2 in air, following the procedures and with the experimental setups described in the paper entitled "Line shape parameters of air-broadened 12CO2 transitions in the 2.0 µm region, with their temperature dependence" by D. Mondelain, A. Campargue, H. Fleurbaey, S. Kassi, S. Vasilchenko published in JQSRT 298 (2023) 108485. <br> Each averaged spectrum corresponds to a .csv file including the following columns: <br> absolute wavenumber (in cm-1), cavity loss rate 1/ct (in 10-6 cm-1), temperature (in °C) and total pressure (in Torr).</p> <p>Two gas mixtures of CO2 in air (Ar : ~1 Mol-% ; O2 :~20.95 Mol-% ; N2 : ~78.05 Mol-%) are used in this work. <br> The stated sample CO2 mixing ratios are 6.013±0.060 Mol-ppm for the 20012-00001 band and 40.10±0.24 Mol-ppm for the 20013-00001 band.</p>
CRDS absorption spectra recorded for the R(06), R(12), R(16), R(18) and R(20) transitions of the 30013-00001 band of 12CO2 in air
<p>The database is made of the set of the CRDS absorption spectra recorded for the R(06), R(12), R(16), R(18) and R(20) transitions of the 30013-00001 band of 12CO2 in air following the procedures and with the experimental setups described in the paper entitled "CRDS measurements of air-broadened lines in the 1.6 µm band of 12CO2: Line shape parameters with their temperature dependence" by D. Mondelain, A. Campargue, H. Fleurbaey, S. Kassi, S. Vasilchenko published in JQSRT 288 (2022) 108267. <br> Each averaged spectrum corresponds to a .csv file including the following columns: <br> absolute wavenumber (in cm-1), cavity loss rate 1/ct (in 10-6 cm-1), temperature (in °C) and total pressure (in Torr).</p> <p>A gas mixture of 398.9±2.0 (2sigma) mol-ppm of CO2 in air (Ar: ~1 mol-% ; O2: ~20.95 mol-%; N2: ~ 78.05 mol-%) is used in this work.</p>
ARTS Absorption Lookup Table for a Wide Range of Atmospheric Conditions
<p><strong>General description</strong></p> <p>This dataset provides an absorption lookup table for the Atmospheric Radiative Transfer Simulator (ARTS). The data is stored in the ARTS XML data format.</p> <p>The dataset consists of the following files:</p> <ul> <li>abs_lookup.xml <em>Meta data describing the lookup table in ASCII format</em></li> <li>abs_lookup.xml.bin <em>The grids and absorption cross section in binary format</em></li> </ul> <p>The lookup table covers wavenumbers from 10 to 3,250 cm<sup>-1</sup>. It is valid for surface temperatures between 200 to 400 Kelvin and water vapor mixing ratios from 4e-5 up to 0.4.</p> <p>The spectral coverage in combination with the wide range of validity make the lookup table suitable to calculate radiative fluxes even in extreme climates.</p> <p>The dataset includes absorption cross-sections for the following species:</p> <ul> <li> CH4</li> <li> CO</li> <li> CO2</li> <li> H2O</li> <li> N2</li> <li> N2O</li> <li> O2</li> <li> O3</li> </ul> <p><strong>Usage with the radiative-convective equilibrium model konrad</strong></p> <p>The lookup table can be used by the ARTS radiation class provided by the radiative-convective equilibrium (RCE) model konrad. This allows the user to perform RCE simulations with line-by-line longwave radiation. The environment variable ``KONRAD_LOOKUP_TABLE`` is used to tell the model where the lookup table is located:</p> <pre><code class="language-bash">export KONRAD_LOOKUP_TABLE="path/to/abs_lookup.xml"</code></pre> <p> </p> <p><strong>References</strong><br> ARTS: <a href="https://radiativetransfer.org">radiativetransfer.org</a><br> konrad: <a href="https://github.com/atmtools/konrad">github.com/atmtools/konrad</a><br> </p>
Atomic-scale environment of niobium in minerals as revealed by X-ray absorption spectroscopy at the Nb K-edge
<p>This data set provides the raw EXAFS and XRD data of the manuscript '<strong>Atomic-scale </strong><strong>environment of niobium in minerals as revealed b</strong><strong>y </strong><strong>X-ray absorption spectroscop</strong><strong>y at the Nb </strong><strong>K</strong><strong>-edge'</strong> submitted to European Journal of Mineralogy.</p> <p>- EXAFS data files were converted into .txt for more accessibility. <em>Pcl</em> is the abbreviation for <em>pyrochlore. </em>The files are accoridngly labelled.</p> <p>- XRD data files for synthetic Nb-doped compounds start with 'XRD_...'.</p> <p>- The refined crystal structure of hydropyrochlore is 'hydropcl_01.cif' file.</p> <p> </p> <p> </p>
Rapid decline of aerosol absorption coefficient and aerosol optical properties effects on radiative forcing in urban areas of Beijing from 2018 to 2021
<p>data for Rapid decline of aerosol absorption coefficient and aerosol optical properties effects on radiative forcing in urban areas of Beijing from 2018 to 2021</p>
Gas-phase electronic action absorption spectra of protonated oxygen-functionalized polycyclic aromatic hydrocarbons (OPAHs)
<p>The dataset for the article:<br> Gas-phase electronic action absorption spectra of protonated oxygen-functionalized polycyclic aromatic hydrocarbons (OPAHs)</p> <p>Authors:<br> Anne P. Rasmussen, Gabi Wenzel, Liv Hornekær, and Lars H. Andersen</p> <p>DOI:<br> 10.1051/0004-6361/202346003</p> <p>Journal:<br> A&A</p> <p>#--------------------------------------------------------------------------------------</p> <p>Folders:<br> - Fig3_action_spectra contains the action spectra data for all five molecules (Fig. 3)<br> - Fig4_histograms contains the histograms for all five molecules (Fig. 4)<br> - Fig5_daughtermass_spectra contains the daughter mass data for pentacenequinone and phenanthrenequinone (Fig. 5)<br> - FigB1_photon_dependence contains the photon dependence data for all five molecules (Fig. B1)</p> <p>#--------------------------------------------------------------------------------------</p> <p>This work has been supported by the Danish National Research Foundation through the Center of Excellence “InterCat” (Grant Agreement no.: DNRF150).</p>
O2-O2, SO2, BrO, and IO differential slant column densities (dSCDs) measured by the University of Colorado Multi-AXis Differential Optical Absorption Spectroscopy (CU MAX-DOAS) instrument at Maido Observatory during April 29, 2018 and May 4, 2018
<p>Description: O<sub>2</sub>-O<sub>2</sub>, SO<sub>2</sub>, BrO, and IO differential slant column densities (dSCDs) measured by the University of Colorado Multi-AXis Differential Optical Absorption Spectroscopy (CU MAX-DOAS) instrument at Maido Observatory during April 29, 2018 and May 4, 2018.</p> <p>Instrument: University of Colorado Multi-AXis Differential Optical Absorption Spectroscopy (CU MAX-DOAS)<br> Instrument reference: Coburn et al. (2011); doi:10.5194/amt-4-2421-2011<br> Instrument contact: Christopher F. Lee (christopher.f.lee@colorado.edu)<br> Instrument PI: Rainer Volkamer (rainer.volkamer@colorado.edu)<br> <br> Measurement site: Maido Observatory, Reunion Island<br> Longitude: 55.384 degrees East<br> Latitude: 21.080 degrees South<br> Altitude: 2160 meters above sea level<br> Azimuth angle: Approximately 100 degrees clockwise from north<br> <br> The detection limit is defined as (2*Measured RMS) / (Maximum differential absorption cross section), where RMS = root-mean-square noise of spectral signal not accounted for by DOAS fit parameters [optical density units]. The maximum differential absorption cross sections used are 7.0e-21 [cm<sup>2</sup>] for SO<sub>2</sub>, 2.6e-17 [cm<sup>2</sup>] for BrO, and 3.5e-17 [cm<sup>2</sup>] for IO. Detection limits for SO<sub>2</sub> dSCDs, BrO dSCDs, and IO dSCDs are only reported during periods of significant SO<sub>2</sub> detection. BrO to SO<sub>2</sub> ratios are only reported during periods when both BrO dSCDs and SO<sub>2</sub> dSCDs are above the detection limit.</p> <p>Local time (RET) is UTC+4.<br> <br> Column 1: UTC start datetime (yyyy-mm-dd HH:MM:SS)<br> Column 2: UTC center datetime (yyyy-mm-dd HH:MM:SS)<br> Column 3: UTC stop datetime (yyyy-mm-dd HH:MM:SS)<br> Column 4: Elevation angle above the horizon (degrees)<br> Column 5: O<sub>2</sub>-O<sub>2</sub> dSCD [molec<sup>2</sup> cm<sup>-5</sup>]<br> Column 6: Spectral fit error for O<sub>2</sub>-O<sub>2</sub> dSCD [molec<sup>-2</sup> cm<sup>-5</sup>]<br> Column 7: SO<sub>2</sub> dSCD [molec cm<sup>-2</sup>]<br> Column 8: Spectral fit error for SO<sub>2</sub> dSCD [molec cm<sup>-2</sup>]<br> Column 9: Detection limit for SO<sub>2</sub> dSCD [molec cm<sup>-2</sup>]<br> Column 10: BrO dSCD [molec cm<sup>-2</sup>]<br> Column 11: Spectral fit error for BrO dSCD [molec cm<sup>-2</sup>]<br> Column 12: Detection limit for BrO dSCD [molec cm<sup>-2</sup>]<br> Column 13: IO dSCD [molec cm<sup>-2</sup>]<br> Column 14: Spectral fit error for IO dSCD [molec cm<sup>-2</sup>]<br> Column 15: Detection limit for IO dSCD [molec cm<sup>-2</sup>]<br> Column 16: Ratio of BrO dSCDs to SO<sub>2</sub> dSCDs<br> Column 17: Error in ratio of BrO dSCDs to SO<sub>2</sub> dSCDs</p>
Dataset for combined influences of sources and atmospheric bleaching on light absorption of water-soluble brown carbon aerosols
<p>This dataset provides the mass-absorption cross section at 365 nm and the corresponding absorption Ångström exponent, carbon isotope (13C and 14C) signature of water-soluble organic carbon, and OC, EC and WS-BrC concentration for aerosol samples collected in East Asia. The PM2.5 samples were collected simultaneously during the winter period (January 2014) from the representative hotspot regions of BrC emissions in E. Asia, including in the Beijing-Tianjin-Hebei (BTH) area, Yangtze River Delta (YRD), Pearl River Delta (PRD), Sichuan (SC) province and SE Yellow Sea regional receptor site — the Korea Climate Observatory at Gosan (KCOG). The earlier published data in E. and S. Asia, such as KCOG, urban city Delhi, Bangladesh Climate Observatory at Bhola Island (BCOB) in the outflow region of the Indo-Gangetic Plain and Maldives Climate Observatory at Hanimaadhoo Island (MCOH) in the Indian Ocean are from corresponding references (see the annotation in each sheet).</p> <p>Please cite Wenzheng Fang, August Andersson, Meehye Lee, Mei Zheng, Ke Du, Sang-Woo Kim, Henry Holmstrand and Örjan Gustafsson (2023): Combined influences of sources and atmospheric bleaching on light absorption of water-soluble brown carbon aerosols. npj Climate and Atmospheric Science. </p>
Over-coupled resonator for broadband surface enhanced infrared absorption (SEIRA)
<p>This repository contains all datasets and MATLAB codes used in the paper "Over-coupled resonator for broadband surface enhanced infrared absorption (SEIRA)"</p> <p>3 folders can be found</p> <ul> <li>BMM contains a main python script that reproduces the electromagnetic computations of the article</li> <li>CMT : contains 3 scripts <ul> <li><strong>Absorption2D.m</strong> computes a 2D map of the absorption from the resonator from eq.1 of the main text as a function of f and (ω − ωr )/γnr .</li> <li><strong>DeltaRm.m</strong> plots the analytical expression of Delta Rm computed in the SI as a function of f.</li> <li><strong>DRanalytics.m</strong> plots the reflexion with the absorber as a function of omega. The expression is derived from the coupled mode formalism as described in the supplemental information.</li> </ul> </li> <li>Data_exp: contains raw experimental datasets of the figures.</li> <li>over_coupling_package : contains scripts to reproduce the electromagnetic simulations presented in the paper</li> </ul> <p>===============================</p> <p>PAPER ABSTRACT:</p> <p>Detection of molecules is a key issue for many applications. Surface enhanced infrared absorption (SEIRA) uses arrays of resonant nanoantennas with good quality factors which can be used to locally enhance the illumination of molecules. The technique has proved to be an effective tool to detect small amount of material. However nanoresonators can detect molecules on a narrow bandwidth so that a set of resonators is necessary to identify a molecule fingerprint. Here, we introduce an alternative paradigm and use low quality factor resonators with large radiative losses (over-coupled resonators). The bandwidth enables to detect all absorption lines between 5 and 10 µm, reproducing the molecular absorption spectrum. Counterintuitively, despite a lower quality factor, the system sensitivity is improved and we report a reflectivity variation as large as one percent per nanometer of molecular layer of PMMA. This paves the way to specific identification of molecules. We illustrate the potential of the technique with the detection of the explosive precursor 2,4-dinitrotoluene (DNT). There is a fair agreement with electromagnetic simulations and we also introduce an analytic model of the SEIRA signal obtained in the over-coupling regime.</p>
Dataset for: Laser absorption spectroscopy measurements of different pulmonary oxygen gas concentrations in transmittance and remittance geometry – phantom study
<p><strong>Significance</strong></p> <p>GASMAS technique has the potential for continuous, clinical monitoring of pre-term infant lung function, removing the need to X-ray diagnosis and reliance on indirect and relatively slow measurement of blood oxygenation.</p> <p><strong>Aim</strong></p> <p>To determine optimal source-detector configuration for reliable path lengths calculation and to estimate the oxygen gas concentration inside the lung cavities filled with humidified gas with four different oxygen gas concentrations ranging between 21% and 100%.</p> <p><strong>Approach</strong></p> <p>Anthropomorphic optical phantoms of neonatal thorax with two different geometries were used to acquire Gas in Scattering Media Absorption Spectroscopy (GASMAS) signals, for 30 source-detector configurations in transmittance and remittance geometry of phantoms in two sizes.</p> <p><strong>Results</strong></p> <p>The results show that an internal light administration is more likely to provide a high GASMAS signal-to-noise ratio (SNR). In general, better SNRs were obtained with the smaller set of phantoms. The values of path length and O<sub>2</sub> concentrations calculated with signals from the phantoms with optical properties at 820 nm, exhibit higher variations than signals from the phantoms with optical properties at 764 nm.</p> <p><strong>Conclusion</strong></p> <p>The study shows that by moving the source and detector over the thorax, most of the lung volumes can potentially be assessed using GASMAS technique.</p>
CIV absorption catalog in SDSS DR12
<p>For each sight-line, identified by Column 1 and 2, we report the absorber’s redshift (Column 3), column density in log(cm −2 ) (Column 4), Doppler velocity dispersion in km s −1 (Column 5), rest equivalent width for 1548 Å W𝑟 ,1548 (Column 6), rest equivalent width for 1550 Å W𝑟 ,1550 (Column 7), the posterior probability of the C iv absorber P(M𝐷 ) (Column 8), and the posterior probability of the singlet absorber P(M𝑆 ) (Column 9). We show only absorbers with P(M𝐷 )≠NaN. This table demonstrates a portion of the full table for the first ten rows. Note that those measurements with large errors are uncertain (i.e. low absorption model posterior probability).</p>
Dataset: Frequency-Dependent Quadratic Response Properties and Two-photon Absorption from Relativistic Equation-of-Motion Coupled Cluster Theory
<p>This dataset comprises outputs and post-processing results related to the paper "Frequency-Dependent Quadratic Response Properties and Two-photon Absorption from Relativistic Equation-of-Motion Coupled Cluster Theory", by Xiang Yuan, Loic Halbert, Lucas Visscher and Andre Severo Pereira Gomes.</p>
Toward liquid cell quantum sensing: Ytterbium complexes with ultra-narrow absorption
Open the record for dataset details and reuse information.
An updated cloud-overlap photolysis module for atmospheric chemistry models, UCI Cloud-J v8.0, with near-UV H2O absorption
Open the record for dataset details and reuse information.
UV-Vis absorption data for five common crystalline explosives
<p>Absolute spectral absorption data for PETN, RDX, HMX, HMS and Cl-20. DOI will be referenced from a journal article so that readers can have access to the numerical data used in one of the plots.</p>
Dataset for "Terahertz Absorption-Saturation and Emission in Electron-doped Germanium Quantum Wells"
<p>Raw data acquired during beamtime at the FELBE FEL light source discussed in C. Ciano, M. Virgilio, L. Bagolini, L. Baldassarre, A. Pashkin,<sup> </sup>M. Helm, M. Montanari, L. Persichetti, L. Di Gaspare,<sup> </sup>G. Capellini, D. J. Paul, G. Scalari, J. Faist, M. De Seta, and M. Ortolani, "Terahertz Absorption-Saturation and Emission in Electron-doped Germanium Quantum Wells", Optics Express</p>
Experimental data for "Virtual Reality as a Tool for Promoting Reading via Enhanced Narrative Absorption and Empathy"
<p>This dataset contains data of the publication "Virtual Reality as a Tool for Promoting Reading via Enhanced Narrative Absorption and Empathy". It includes measure for the Story World Absorption Scale and the State Empathy Scale used to compare subjective experiences while reading on paper and reading in a virtual reality environment.</p> <p>Original paper: Pianzola, F., Bálint, K., and Weller, J. (2019). Virtual Reality as a Tool for Promoting Reading via Enhanced Narrative Absorption and Empathy. <em>Scientific Study of Literature 9</em>(2). https://doi.org/10.1075/ssol.19013.pia</p>
Figures, plotting scripts, and data for "Resolving non-uniform temperature distributions with single-beam absorption spectroscopy. Part I: Theoretical capabilities and limitations"
<p>This dataset contains the necessary materials to recreate the figures in "Resolving nonuniform temperature distributions with single-beam absorption spectroscopy: Part I: Theoretical capabilities and limitations."</p> <p>The code included in this dataset is released under the BSD 3-Clause License. The figures are shared under the Creative Commons Attribution 4.0 International License (CC BY 4.0, https://creativecommons.org/licenses/by/4.0/).</p>
Data archive for the peer-reviewed journal article "Detailed characterization of the CAPS single scattering albedo monitor (CAPS PMssa) as a field-deployable instrument for measuring aerosol light absorption with the extinction-minus-scattering method"
<p>Data archive accompanying the peer-reviewed journal article "Detailed characterization of the CAPS single scattering albedo monitor (CAPS PMssa) as a field-deployable instrument for measuring aerosol light absorption with the extinction-minus-scattering method". In 2020 this article was accepted for publication in the journal <em>Atmospheric Measurement Techniques</em>. Data are uploaded in the form of ascii text files, Igor Pro experiment files (.pxp), and Jupyter notebook files. In addition, a Jupyter notebook file is included containing an implementation of the error model used in the paper.</p>
Quasar spectra and absorption profile fits of HE 0515-4414 for limiting fine-structure constant variability
<p>This is the first public pre-release upon submission to MNRAS and to obtain a DOI.</p>
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