Journal of Quantitative Spectroscopy & Radiative Transfer最新文献

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Conversion between measurement units used for night sky quality assessment with multispectral (RGB) cameras 多光谱(RGB)相机用于夜空质量评估的测量单位之间的转换
IF 1.9 3区 物理与天体物理
Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-08-21 DOI: 10.1016/j.jqsrt.2025.109636
Zoltán Kolláth , Tamás Hajdu , Tobias Degen , Andreas Jechow , János Sztakovics
{"title":"Conversion between measurement units used for night sky quality assessment with multispectral (RGB) cameras","authors":"Zoltán Kolláth ,&nbsp;Tamás Hajdu ,&nbsp;Tobias Degen ,&nbsp;Andreas Jechow ,&nbsp;János Sztakovics","doi":"10.1016/j.jqsrt.2025.109636","DOIUrl":"10.1016/j.jqsrt.2025.109636","url":null,"abstract":"<div><div>In recent years, many studies have shown that light pollution adversely affects wildlife, ecosystems, and human well-being. To assess and mitigate these impacts, it is crucial that measurements of night sky quality are reliable and comparable across sites and instruments. However, the lack of standardised night sky brightness metrology and the use of a wide variety of measurement instruments with varying spectral responsivity and field-specific measurement units hinder meaningful comparison. We collected night sky spectra from 44 nights at dark locations (existing and proposed dark sky parks). Based on this observational dataset, we created a larger random set of spectra. These data served to fit conversion parameters for a wide variety of units. We demonstrate that RGB cameras, when used as multichannel measuring devices, enable the retrieval of measurements that facilitate conversions between different units. Furthermore, even airglow can be quantified from a given measurement, enabling the determination of oxygen and sodium emission line contributions. Since this contribution is not negligible, quantitative measurements of its magnitude are crucial for accurately assessing light pollution at dark-sky sites. Using our spectral measurement database, we constructed the most probable transformation from the cameras’ R, G, and B channel <span><math><mrow><mi>d</mi><mi>s</mi><mi>u</mi></mrow></math></span> values to other units, such as the astronomical Bessel V band magnitudes. The unit conversion formulas provided in this paper are valid for mildly polluted sites (existing and proposed dark sky places), in the 21-22<!--> <span><math><mrow><msub><mrow><mi>mag</mi></mrow><mrow><mi>V</mi></mrow></msub><mo>/</mo><msup><mrow><mi>arcsec</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span> range.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"347 ","pages":"Article 109636"},"PeriodicalIF":1.9,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144899469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electromagnetic line source scattering by the circular strip with fractional boundary condition 带分数边界条件的圆形条形电磁线源散射
IF 1.9 3区 物理与天体物理
Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-08-20 DOI: 10.1016/j.jqsrt.2025.109623
Ömer Faruk Alperen , Vasil Tabatadze , Kamil Karaçuha
{"title":"Electromagnetic line source scattering by the circular strip with fractional boundary condition","authors":"Ömer Faruk Alperen ,&nbsp;Vasil Tabatadze ,&nbsp;Kamil Karaçuha","doi":"10.1016/j.jqsrt.2025.109623","DOIUrl":"10.1016/j.jqsrt.2025.109623","url":null,"abstract":"<div><div>This article explores some core questions about how diffraction behaves when circular arc surfaces incorporate fractional boundary conditions, which extend beyond the classic Dirichlet and Neumann scenarios. Specifically, we investigate how E- and H-polarized electromagnetic waves, generated by a cylindrical source, interact with a slotted circular cylinder designed to meet these fractional boundary conditions. Notably, this is the first time such conditions have been used with circular geometries in the context of cylindrical sources.</div><div>We also analyze how different factors — such as boundary conditions, incident angles, and aperture sizes — influence resonance. Our results reveal new types of resonance that arise when the circular arc surface deviates from the conventional perfect electric or magnetic conductor settings. To support our theoretical findings, we developed a MATLAB implementation and carried out numerical simulations, providing further insight into these novel diffraction and resonance phenomena.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"347 ","pages":"Article 109623"},"PeriodicalIF":1.9,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144889235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FT spectroscopy of the Comet-Tail system in 12C17O+: Deperturbation analysis of the A2Πi(v=0) level [公式省略]中彗星-彗尾系统的FT光谱:[公式省略]能级的摄动分析
IF 1.9 3区 物理与天体物理
Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-08-20 DOI: 10.1016/j.jqsrt.2025.109635
Izabela Piotrowska , Rafał Hakalla , Wojciech Szajna , Ryszard Kȩpa , Stanisław Ryzner , Marzena I. Malicka , Aleksandra Stasik
{"title":"FT spectroscopy of the Comet-Tail system in 12C17O+: Deperturbation analysis of the A2Πi(v=0) level","authors":"Izabela Piotrowska ,&nbsp;Rafał Hakalla ,&nbsp;Wojciech Szajna ,&nbsp;Ryszard Kȩpa ,&nbsp;Stanisław Ryzner ,&nbsp;Marzena I. Malicka ,&nbsp;Aleksandra Stasik","doi":"10.1016/j.jqsrt.2025.109635","DOIUrl":"10.1016/j.jqsrt.2025.109635","url":null,"abstract":"<div><div>The first recording of the <span><math><mrow><mn>0</mn><mo>−</mo><msup><mrow><mi>v</mi></mrow><mrow><mo>′</mo><mo>′</mo></mrow></msup></mrow></math></span> progression <span><math><mrow><mo>(</mo><msup><mrow><mi>v</mi></mrow><mrow><mo>′</mo><mo>′</mo></mrow></msup><mo>=</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>,</mo><mn>2</mn><mo>,</mo><mn>3</mn><mo>)</mo></mrow></math></span> in the emission spectrum of the Comet-Tail (<span><math><mrow><msup><mrow><mi>A</mi></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>Π</mi></mrow><mrow><mi>i</mi></mrow></msub><mo>→</mo><msup><mrow><mi>X</mi></mrow><mrow><mn>2</mn></mrow></msup><msup><mrow><mi>Σ</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow></math></span>) system in the <span><math><mrow><msup><mrow></mrow><mrow><mn>12</mn></mrow></msup><msup><mrow><mi>C</mi></mrow><mrow><mn>17</mn></mrow></msup><msup><mrow><mi>O</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow></math></span> molecule was performed. Using a high-resolution Fourier-transform spectrometer, in the region of 12 880 – 20 500 cm<sup>−1</sup> nearly 1900 lines were measured with an accuracy of 0.02 cm<sup>−1</sup>. As a result of the spectral analysis, 20 molecular parameters of the A<span><math><mrow><mo>(</mo><mi>v</mi><mo>=</mo><mn>0</mn><mo>)</mo></mrow></math></span> and X<span><math><mrow><mo>(</mo><mi>v</mi><mo>=</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>,</mo><mn>2</mn><mo>,</mo><mn>3</mn><mo>)</mo></mrow></math></span> levels were determined, including the parameters of the <span><math><mrow><msup><mrow><mi>A</mi></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>Π</mi></mrow><mrow><mi>i</mi></mrow></msub><mrow><mo>(</mo><mi>v</mi><mo>=</mo><mn>0</mn><mo>)</mo></mrow><mo>∼</mo><msup><mrow><mi>X</mi></mrow><mrow><mn>2</mn></mrow></msup><msup><mrow><mi>Σ</mi></mrow><mrow><mo>+</mo></mrow></msup><mrow><mo>(</mo><mi>v</mi><mo>=</mo><mn>10</mn><mo>)</mo></mrow></mrow></math></span> perturbation of a complex, spin–orbit, spin-electronic and rotation-electronic (<span><math><mrow><mi>L</mi><mo>−</mo></mrow></math></span>uncoupling) nature. In addition, the values of the rovibronic terms of the <span><math><mrow><msup><mrow><mi>A</mi></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>Π</mi></mrow><mrow><mi>i</mi></mrow></msub><mrow><mo>(</mo><mi>v</mi><mo>=</mo><mn>0</mn><mo>)</mo></mrow></mrow></math></span> level were also determined and the fractional <span><math><mrow><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup><mi>Π</mi></mrow></math></span> character of the <span><math><mrow><msup><mrow><mi>A</mi></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>Π</mi></mrow><mrow><mi>i</mi></mrow></msub><mrow><mo>(</mo><mi>v</mi><mo>=</mo><mn>0</mn><mo>)</mo></mrow></mrow></math></span> and <span><math><mrow><msup><mrow><mi>X</mi></mrow><mrow><mn>2</mn></mrow></msup><msup><mrow><mi>Σ</mi></mrow><mrow><mo>+</mo></mrow></msup><mrow><mo>(</mo><mi>v</mi><mo>=</mo><mn>10</mn><mo>)</mo></mrow></mrow></math></span> levels was examined.</div></","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"347 ","pages":"Article 109635"},"PeriodicalIF":1.9,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144899403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The ammonia absorption spectrum revisited between 7400 and 8600 cm-1 在7400 ~ 8600 cm-1之间重测了氨吸收光谱
IF 1.9 3区 物理与天体物理
Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-08-19 DOI: 10.1016/j.jqsrt.2025.109639
P. Cacciani , A. Campargue
{"title":"The ammonia absorption spectrum revisited between 7400 and 8600 cm-1","authors":"P. Cacciani ,&nbsp;A. Campargue","doi":"10.1016/j.jqsrt.2025.109639","DOIUrl":"10.1016/j.jqsrt.2025.109639","url":null,"abstract":"<div><div>The room temperature absorption spectrum of ammonia is revisited between 7400 and 8600 cm<sup>-1</sup> on the basis of a Fourier transform absorption spectrum recorded at Université Libre de Bruxelles. The retrieved empirical line list counts more than 8400 lines and extends significantly a previous list retrieved from the same spectrum and used as main source of line parameters in the HITRAN database, in the considered region. By comparison with a variational line list, the C2018 list from Coles et al. (J Quant Spectrosc Radiat Transf 2018;219:199–212. 10.1016/j.jqsrt.2018.07.022), and validating most of the assignments by using lower state combination difference relations (LSCD), about 2798 transitions are assigned. They belong to 60 bands and correspond to about 72 % of the intensity sum in the region. The previous assignments by Barton et al. (J Mol Spectrosc 2016;325:7–12. 10.1016/j.jms.2016.05.001) which are reproduced in the HITRAN database show a poor agreement with the present results. A set of 1149 empirical values of the upper state energy levels is provided with a typical accuracy of 10<sup>–</sup><sup>3</sup> cm<sup>-1</sup>.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"347 ","pages":"Article 109639"},"PeriodicalIF":1.9,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144899523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Monitoring temperature dependence in the ultraviolet photoabsorption spectra of carbon dioxide 二氧化碳紫外吸收光谱中温度依赖性的监测
IF 1.9 3区 物理与天体物理
Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-08-19 DOI: 10.1016/j.jqsrt.2025.109630
Alan Guilherme Falkowski , Pedro A.S. Randi , Márcio H.F. Bettega
{"title":"Monitoring temperature dependence in the ultraviolet photoabsorption spectra of carbon dioxide","authors":"Alan Guilherme Falkowski ,&nbsp;Pedro A.S. Randi ,&nbsp;Márcio H.F. Bettega","doi":"10.1016/j.jqsrt.2025.109630","DOIUrl":"10.1016/j.jqsrt.2025.109630","url":null,"abstract":"<div><div>Photoabsorption cross sections of CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> were investigated over a temperature range from 150 K to 800 K using the nuclear ensemble approach to evaluate its ability to capture temperature-dependent spectral changes. At each temperature, 1001 geometries were sampled from a Wigner distribution. For each geometry, the vertical excitation energies and oscillator strengths of the first 20 electronically excited states were computed and employed in the calculation of photoabsorption cross sections, considering only electronic transitions. The underlying electronic structure calculations were performed at the TD-DFT/CAMB3LYP/aug-cc-pVTZ and TD-DFT/<span><math><mi>ω</mi></math></span>B97X/aug-cc-pVTZ levels of theory. The results reveal that, as temperature increases, the onset of the lower absorption band shifts to lower energies, while the intensity of the second band grows. These trends are in good agreement with previous experimental data from the literature Venot et al. (2018), highlighting the nuclear ensemble approach effectiveness in reproducing the temperature dependence of CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>’s photoabsorption cross sections.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"347 ","pages":"Article 109630"},"PeriodicalIF":1.9,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectrum of five-times ionized krypton: Kr VI 五次电离氪的光谱:Kr VI
IF 1.9 3区 物理与天体物理
Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-08-19 DOI: 10.1016/j.jqsrt.2025.109619
Aftab Alam , Abid Husain , K. Haris , A. Tauheed , S. Jabeen
{"title":"Spectrum of five-times ionized krypton: Kr VI","authors":"Aftab Alam ,&nbsp;Abid Husain ,&nbsp;K. Haris ,&nbsp;A. Tauheed ,&nbsp;S. Jabeen","doi":"10.1016/j.jqsrt.2025.109619","DOIUrl":"10.1016/j.jqsrt.2025.109619","url":null,"abstract":"<div><div>This work describes the spectral analysis of five-times ionized krypton ion (Kr VI) using a high-resolution spectrogram recorded on a 3 m normal incidence vacuum spectrograph in the wavelength 230–2075 Å region. For spectral excitation, a gas-puff triggered spark source was used. This work thoroughly examined all previously reported spectroscopic analyses for Kr VI. Many missing and new levels were added to the list of known energy levels with the help of several supportive transitions. The present experimental findings were theoretically supported within the pseudo-relativistic Hartree–Fock (HFR) formalism implemented in the Cowan suite of codes. A total of 52 (including eight new) energy levels were established with the help of 169 unique observed spectral lines (31 are new) assigned to 175 (6 doubly assigned) transitions. All observed and Ritz wavelengths were reported with their uncertainties, modeled intensities, and other evaluated radiative transition parameters such as transition probabilities and cancellation factors.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"347 ","pages":"Article 109619"},"PeriodicalIF":1.9,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144901771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Empirical energy levels and line lists of D217O, and D218O from the analysis of far infrared absorption spectra (50–720 cm-1) 从远红外吸收光谱(50-720 cm-1)分析D217O和D218O的经验能级和谱线表
IF 1.9 3区 物理与天体物理
Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-08-16 DOI: 10.1016/j.jqsrt.2025.109638
S.N. Mikhailenko , A.O. Koroleva , A. Campargue
{"title":"Empirical energy levels and line lists of D217O, and D218O from the analysis of far infrared absorption spectra (50–720 cm-1)","authors":"S.N. Mikhailenko ,&nbsp;A.O. Koroleva ,&nbsp;A. Campargue","doi":"10.1016/j.jqsrt.2025.109638","DOIUrl":"10.1016/j.jqsrt.2025.109638","url":null,"abstract":"<div><div>This contribution is part of a long-term project aiming at improving our knowledge of the energy levels of the nine stable isotopologues of water vapor (H<sub>2</sub><sup>X</sup>O, HD<sup>X</sup>O, D<sub>2</sub><sup>X</sup>O with <em>X</em> = 16, 17, and 18) from the analysis of their far infrared (FIR) spectra. The Fourier transform spectra were recorded with unprecedented sensitivity at the SOLEIL synchrotron facility. In a recent work (S. N. Mikhailenko, A. O. Koroleva, A. Campargue <em>J. Phys. Chem. Ref. Data</em> 54, 023,103 (2025) <span><span>https://doi.org/10.1063/5.0273106</span><svg><path></path></svg></span>), the analysis of five absorption spectra of water vapor highly enriched in <sup>17</sup>O, <sup>18</sup>O and deuterium (D) have allowed a significant extension of the observations for the HD<sup>17</sup>O and HD<sup>18</sup>O minor isotopologues. It turns out that the D<sub>2</sub><sup>17</sup>O and D<sub>2</sub><sup>18</sup>O partial pressures in these spectra (up to about 0.38 mbar and 0.27 mbar, respectively) were about one order of magnitude higher than those in the SOLEIL spectra dedicated to the D<sub>2</sub>O species (S. N. Mikhailenko, E. V. Karlovets, A. O. Koroleva, and A. Campargue <em>J. Phys. Chem. Ref. Data</em> 53, 023,102 (2024) <span><span>https://doi.org/10.1063/5.0202355</span><svg><path></path></svg></span>). As a result, 548 and 380 transitions are newly measured for D<sub>2</sub><sup>17</sup>O and D<sub>2</sub><sup>18</sup>O, respectively, leading to the new determination of 147 and 59 energy levels, respectively. For each of the two species, the set of measured transition frequencies was merged to literature sources to generate extensive sets of accurate empirical rotational-vibrational energies for the ground, (000), and first excited, (010), vibrational states. Based on these accurate energy levels, recommended lists of transitions are generated with a 10<sup>–26</sup> cm/molecule intensity cut-off for the (000) – (000), and (010) – (010) rotational bands and the <em>ν</em><sub>2</sub> fundamental band of D<sub>2</sub><sup>17</sup>O and D<sub>2</sub><sup>18</sup>O. For the microwave region (0 – 1.5 THz), more complete lists with an intensity cut-off lowered to 10<sup>–29</sup> cm/molecule are provided.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"347 ","pages":"Article 109638"},"PeriodicalIF":1.9,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144899562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The ν3 band of 14N18O2: line positions and intensities 14N18O2的ν3波段:线的位置和强度
IF 1.9 3区 物理与天体物理
Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-08-16 DOI: 10.1016/j.jqsrt.2025.109637
A.A. Marinina , D. Jacquemart , L. Krim , P. Soulard , V.I. Perevalov
{"title":"The ν3 band of 14N18O2: line positions and intensities","authors":"A.A. Marinina ,&nbsp;D. Jacquemart ,&nbsp;L. Krim ,&nbsp;P. Soulard ,&nbsp;V.I. Perevalov","doi":"10.1016/j.jqsrt.2025.109637","DOIUrl":"10.1016/j.jqsrt.2025.109637","url":null,"abstract":"<div><div>The Fourier transform spectrum of a sample prepared by mixing two gaseous species <sup>18</sup>O<sub>2</sub>/<sup>14</sup>N<sup>16</sup>O (1:2) have been recorded in the region of the ν<sub>3</sub> band of nitrogen dioxide. The spectrum contains the lines corresponding to the ν<sub>3</sub> band of the <sup>14</sup>N<sup>18</sup>O<sub>2</sub> isotopologue within the 1536-1618 cm<sup>−1</sup> spectral range. In total 738 lines of the ν<sub>3</sub> band of this isotopologue were assigned with the rotational quantum numbers <em>N</em> and <em>K<sub>a</sub></em> up to 54 and 10, respectively, corresponding to 948 electron spin-rotation-vibration transitions. The overall measured set of the line positions was used to fit the effective Hamiltonian parameters. The fitted set of the parameters reproduces the observed line positions with an <em>rms</em> of 2.3×10<sup>−3</sup> cm<sup>−1</sup>. A selected set of the measured line intensities was used to determine the effective dipole moment parameter describing the line intensities of the ν<sub>3</sub> band. The <em>rms</em> deviation of the fit is 5.8%. Using the fitted set of the effective Hamiltonian parameters and the fitted effective dipole moment parameter (dipole moment derivative <span><math><mfrac><mrow><mi>∂</mi><msub><mi>μ</mi><mi>z</mi></msub></mrow><mrow><mi>∂</mi><msub><mi>q</mi><mn>3</mn></msub></mrow></mfrac></math></span>) the list of the calculated line parameters for the ν<sub>3</sub> band of <sup>14</sup>N<sup>18</sup>O<sub>2</sub> was generated.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"347 ","pages":"Article 109637"},"PeriodicalIF":1.9,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144899599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental and semi-empirical studies of the fine and the hyperfine structure of odd-parity configuration system of atomic lutetium 原子镥奇宇称组态系统精细和超精细结构的实验和半经验研究
IF 1.9 3区 物理与天体物理
Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-08-15 DOI: 10.1016/j.jqsrt.2025.109632
M. Klempka , M. Elantkowska , B. Furmann , J. Ruczkowski , P. Głowacki , S. Mieloch , D. Stefańska
{"title":"Experimental and semi-empirical studies of the fine and the hyperfine structure of odd-parity configuration system of atomic lutetium","authors":"M. Klempka ,&nbsp;M. Elantkowska ,&nbsp;B. Furmann ,&nbsp;J. Ruczkowski ,&nbsp;P. Głowacki ,&nbsp;S. Mieloch ,&nbsp;D. Stefańska","doi":"10.1016/j.jqsrt.2025.109632","DOIUrl":"10.1016/j.jqsrt.2025.109632","url":null,"abstract":"<div><div>In this paper, we present the results of the fine- (<em>fs</em>) and the hyperfine structure (<em>hfs</em>) analysis of atomic lutetium (Lu I). In the experimental part of this work, 24 magnetic-dipole (<em>A</em>) and 20 electric-quadrupole (<em>B</em>) <em>hfs</em> constants were measured for odd-parity configuration levels, together with 5 <em>A</em> and 5 <em>B hfs</em> constants for even-parity configuration levels, using laser spectroscopy in a hollow cathode discharge lamp or calculated from the Fourier transform spectrum. Based on these results, as well as on available literature data, a parametric study of the <em>fs</em> and <em>hfs</em> was performed for the system of 84 odd-parity configurations of atomic lutetium. The <em>fs</em> fit for 128 energy level values resulted in a mean error of <span><math><mrow><mi>Δ</mi><mi>E</mi><mo>=</mo><mn>14</mn></mrow></math></span> cm<sup>−1</sup>. For unknown electronic levels, predicted values of the level energies and the <em>hfs</em> constants are given. These predictions, along with the significant improvement in the accuracy of the experimental databases, lay the foundation for the next step of the Lu I radiative transition probabilities analysis.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"347 ","pages":"Article 109632"},"PeriodicalIF":1.9,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to “Partition sums for molecules and their isotopologues for HITRAN2024” [Journal of Quantitative Spectroscopy & Radiative Transfer 345 (2025) 109568] “HITRAN2024中分子及其同位素的划分总和”的勘误表[定量光谱学与辐射传输杂志345 (2025)109568]
IF 1.9 3区 物理与天体物理
Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2025-08-14 DOI: 10.1016/j.jqsrt.2025.109618
Robert R. Gamache , Bastien Vispoel , Jonathan Tennyson , Sergei N. Yurchenko , Oleg L. Polyansky , Iouli E. Gordon , Robert J. Hargreaves , Xinchuan Huang
{"title":"Corrigendum to “Partition sums for molecules and their isotopologues for HITRAN2024” [Journal of Quantitative Spectroscopy & Radiative Transfer 345 (2025) 109568]","authors":"Robert R. Gamache ,&nbsp;Bastien Vispoel ,&nbsp;Jonathan Tennyson ,&nbsp;Sergei N. Yurchenko ,&nbsp;Oleg L. Polyansky ,&nbsp;Iouli E. Gordon ,&nbsp;Robert J. Hargreaves ,&nbsp;Xinchuan Huang","doi":"10.1016/j.jqsrt.2025.109618","DOIUrl":"10.1016/j.jqsrt.2025.109618","url":null,"abstract":"","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"346 ","pages":"Article 109618"},"PeriodicalIF":1.9,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144828059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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