Journal of Quantitative Spectroscopy & Radiative Transfer最新文献

{"title":"Stark broadening of Sn II spectral lines","authors":"Milan S. Dimitrijević ,&nbsp;Magdalena D. Christova ,&nbsp;Cristina Yubero ,&nbsp;Sylvie Sahal-Bréchot","doi":"10.1016/j.jqsrt.2024.109241","DOIUrl":"10.1016/j.jqsrt.2024.109241","url":null,"abstract":"<div><div>Our objective is to provide reliable Stark broadening data for Sn II spectral lines needed for astrophysics, plasma physics, fusion research, and different plasmas in laboratory and technology. We used the semiclassical perturbation method for the calculation of Stark broadening parameters, full widths at half intensity maximum and shifts for 44 spectral lines of singly charged tin ion (Sn II), for collisions with electrons and protons. The obtained results have been compared with the existing experimental and theoretical results and used to demonstrate the influence of Stark broadening mechanism on spectral lines of Sn II in stellar atmospheres.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"330 ","pages":"Article 109241"},"PeriodicalIF":2.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661232","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}

{"title":"Using hybrid deep learning to predict spectral responses of quantum dot-embedded nanoporous thin-film solar cells","authors":"Farhin Tabassum ,&nbsp;George-Rafael Domenikos ,&nbsp;Shima Hajimirza","doi":"10.1016/j.jqsrt.2024.109258","DOIUrl":"10.1016/j.jqsrt.2024.109258","url":null,"abstract":"<div><div>In this study, we propose an innovative design for nanoporous Si thin film (NPTF) solar cell, seamlessly integrated with semiconducting (<em>CdSe</em>)<em>ZnS</em> Quantum Dots (QDs), without the need for additional metal-dielectric interfaces to attain plasmonic like effects. The intricate network of randomized nano-scaled pores within thin film creates similar enhancement, complemented by QDs inducing excitonic resonances, and amplifying localized electromagnetic field density. To evaluate the spectral responses of the structure we use a supervised trained surrogate model. To train the model, we generate ground truth datasets by solving Maxwell's equations in the design domain and, subsequently, applying charge carrier dynamics model to evaluate the external quantum efficiency (EQE). To predict the spectral response for this stochastic design with randomized pore and QD positions, we feed the ground truth data to a customized Hybrid Deep Learning (HDL) model through <em>in-vitro</em> geometric features fused with <em>dynamic</em> features of QDs. The dynamic features are extracted using an <em>electron dynamics</em> (ED) study. We then evaluate the prediction accuracy of our HDL model. Results show that our designed model can predict absorptivity with an accuracy of <em>R</em>² &gt;  0.96, and EQE with an accuracy of <em>R</em>² &gt;  0.98. This investigation highlights the potential of coupling nanoporous thin film solar cells with QDs, an observed localized enhancement phenomenon, and HDL model to achieve high-performance thin-film solar cells, characterized by improved external quantum efficiency without using metal-dielectric interfaces.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"330 ","pages":"Article 109258"},"PeriodicalIF":2.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661234","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}

{"title":"Size-dependent optical properties and thermal response of Fe/Co/Ni@Au and Fe/Co/Ni@Ag core-shell nanospheres","authors":"Kailash,&nbsp;SS Verma","doi":"10.1016/j.jqsrt.2024.109251","DOIUrl":"10.1016/j.jqsrt.2024.109251","url":null,"abstract":"<div><div>In this work, Mie theory is employed to study the opto-thermal response of magneto plasmonic Fe/Co/Ni@Au and Fe/Co/Ni@Ag core-shell nanostructures of different sizes in the presence of dielectric media (i.e., water) is investigated numerically. The optical and thermal characteristics from the Fe, Co, and Ni as core material with noble metal Au and Ag as coating (shell) material are susceptible to being well-tuned by controlling the dimensions of both core and shell, based on the research being conducted at the moment. The SPR wavelength spectra of magnetic core Fe /Co /Ni (radii ranging from 10–40 nm) with Au and Ag coating (fixed shell thickness of 5, 10, and 15 nm), nanostructures are tuned from 231–528 nm and 364–420 nm, respectively. The maximum temperature obtained near the surface of Fe/Co/Ni@Au and Fe/Co/Ni@Ag nanospheres with the optimized size is 2.09℃ / 2.09 ℃ / 2.23 ℃ and 2.30 ℃ / 2.33 ℃ / 2.33 ℃, respectively. It can be observed that the surface plasmon resonance (SPR) is located in the vicinity of the ultraviolet (UV) and infrared (IR) domains of the electromagnetic (EM) spectra. The temperature rise noticed in the nanoparticle (NP) has been attributed to enhanced absorbance efficiency.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"330 ","pages":"Article 109251"},"PeriodicalIF":2.3,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661290","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}

{"title":"Calculation of collisional line-broadening and shifting of acetylene using Complex Robert–Bonamy–Ma approach","authors":"Andrei Sokolov ,&nbsp;Sergei N. Yurchenko ,&nbsp;Jonathan Tennyson ,&nbsp;Robert R. Gamache ,&nbsp;Bastien Vispoel","doi":"10.1016/j.jqsrt.2024.109225","DOIUrl":"10.1016/j.jqsrt.2024.109225","url":null,"abstract":"<div><div>A comprehensive semi-classical study of the collisional line broadening and shift coefficients of C<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> by several key perturbers (H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>, He, N<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>, C<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>, CO, and CO₂) for astronomical applications using the Complex Robert–Bonamy–Ma (CRBM) framework is presented. Following the CRBM computational protocol, the intermolecular interaction potentials are constructed from atom–atom and electrostatic interactions, and then fitted to reproduce experimental room-temperature line-broadening parameters taken from the literature. In total, 657 experimental values are used in the fitting. The empirical potentials are then used to predict line broadening coefficients over a wide temperature range. Reference collisional line widths <span><math><msub><mrow><mi>γ</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span> and temperature exponents <span><math><mi>n</mi></math></span> for the commonly used single-power law are produced, as well as a set of parameters for the double-power law, which better reproduces the temperature dependence of theoretical predictions. The vibrational dependence of the line widths is studied using a new <em>ab initio</em> isotropic polarizability surface of C<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> and is found to be negligible. The computed line broadening parameters are found to agree well with the experimental data, while the modelling of line shifts of HCCH is not satisfactory when compared to the experiment. The new line broadening data of C<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> with the <span><math><mi>J</mi></math></span> (or <span><math><mi>m</mi></math></span>) dependence have been used to populate the ExoMol database <span><span>www.exomol.com</span><svg><path></path></svg></span> as part of the ExoMol pressure-broadening diet and can be used to model opacities of atmosphere of (extrasolar) planets. The CRBM methodology tested here on C<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> can be used for other similar (closed-shell) systems in ExoMol that are important for exoplanetary atmospheric studies.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"330 ","pages":"Article 109225"},"PeriodicalIF":2.3,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The electronic spectra of trifluoroacetic acid and chlorodifluoroacetic acid in the 4.5 – 10.8 eV photon energy region","authors":"P.S. Puppi ,&nbsp;A. Souza Barbosa ,&nbsp;N.C. Jones ,&nbsp;S.V. Hoffmann ,&nbsp;U.S. Akther ,&nbsp;N.J. Mason ,&nbsp;P. Limão-Vieira","doi":"10.1016/j.jqsrt.2024.109257","DOIUrl":"10.1016/j.jqsrt.2024.109257","url":null,"abstract":"<div><div>Synchrotron radiation has been used to record for the first time absolute vacuum ultraviolet photoabsorption cross-sections of trifluoroacetic acid (TFA) and chlorodifluoroacetic acid (CDFA) in the 4.5–10.8 eV energy range. In order to further our knowledge of the major electronic transitions and thus help interpret the photoabsorption data, theoretical calculations using time-dependent density functional theory (TD-DFT) level have been performed. These calculations have provided important information on the nature of the excited electronic states which have been assigned to valence, mixed valence-Rydberg and Rydberg transitions. Due to the lack of any information about CDFA ionic states, we also provide Equation-of-Motion Coupled-Cluster Single and Doubles (EOM-CCSD) vertical ionisation energies. Photolysis lifetimes in the Earth's atmosphere for both chemical compounds have also been estimated from the absolute photoabsorption cross-section data.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"330 ","pages":"Article 109257"},"PeriodicalIF":2.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Measurement of circular intensity differential scattering (CIDS) from single optically trapped biological particles","authors":"Haifa Alali ,&nbsp;Yong-Le Pan ,&nbsp;Aimable Kalume ,&nbsp;Yongxiang Hu ,&nbsp;Yehor Surkov ,&nbsp;Yuriy Shkuratov ,&nbsp;Gorden Videen ,&nbsp;Chuji Wang","doi":"10.1016/j.jqsrt.2024.109244","DOIUrl":"10.1016/j.jqsrt.2024.109244","url":null,"abstract":"<div><div>The circular intensity differential scattering (CIDS), which is the normalized Mueller matrix element -S₁₄/S₁₁, has been measured from single biological particles as a function of scattering angle. CIDS is valuable for its potential in detecting chiral particles that may include the helical structures of DNA or RNA molecules in biological samples, and as such is a potential method for detecting biological particles. Optical trapping is employed to levitate single particles within a custom-designed elliptical reflector for CIDS measurements. The advantage of optical levitation in light-scattering measurements is that single particles can be suspended in air with sufficient working distance to prevent interference from the suspending apparatus. To measure the phase function, the reflector is used to collect the angle-dependent scattering signals. We demonstrated that we can obtain two-dimensional angular optical scattering (TAOS) patterns that cover a wide angular range from single levitated particles. These TAOS patterns are generated using 532 nm illumination of left-handed and right-handed circular polarizations and recorded from trapped single particles (silica, English Oak, Ragweed, Mulberry, Glycine, and <span>l</span>-Aspartic acid).</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"330 ","pages":"Article 109244"},"PeriodicalIF":2.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661292","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}

{"title":"Mechanism of metastable krypton atom preparation via laser-induced ionization","authors":"Jia Wu ,&nbsp;Baodong Gai ,&nbsp;Shu Hu ,&nbsp;Zihao Liu ,&nbsp;Tao Li ,&nbsp;Xianglong Cai ,&nbsp;Ming Xu ,&nbsp;Dongdong Xu ,&nbsp;Shutong He ,&nbsp;Yannan Tan ,&nbsp;Jialiang Zhang ,&nbsp;Jingwei Guo","doi":"10.1016/j.jqsrt.2024.109233","DOIUrl":"10.1016/j.jqsrt.2024.109233","url":null,"abstract":"<div><div>Preparation of metastable Kr atoms in the 5s[3/2]₂ level via laser-induced ionization has been achieved. The temporal evolution of the intensity of Kr atomic spectral lines at 760.15 nm, 811.29 nm, and 431.96 nm was used to elucidate the production mechanisms of metastable Kr atoms. These mechanisms primarily involve two processes: the “excitation + radiation” process, dominated by multiphoton excitation and initial plasma-induced electron impact excitation, and the “ion-electron recombination” process, governed by avalanche ionization. The decay time constants of Kr atomic spectral lines, corresponding to the “excitation + radiation” and “ion-electron recombination” processes respectively, were obtained experimentally under both strong and weak ionization conditions. The experiments revealed delay in preparations of metastable Kr atoms between these two processes. To reduce the loss of metastable Kr atoms and effectively utilize their peak concentration, we drew inspiration from metastable rare gas lasers and proposed the “cycling” idea to keep metastable Kr atoms produced by these two processes as synchronized as possible. We used 811.29 nm laser to excite metastable Kr atoms generated rapidly during the “excitation + radiation” stage to the 5p[5/2]₃ level. The Kr atoms returned to the 5s[3/2]₂ level through spontaneous radiation, merging with metastable Kr atoms that were slowly produced during the “ion-electron recombination” stage. We hope that the “cycling” idea can shorten the delay in preparations of metastable Kr atoms from both processes and enhance the peak concentration of metastable Kr atoms. However, the experimental results didn't meet expectations, as we observed a decrease in the 811.29 nm fluorescence after laser excitation, attributed to the accumulation of 5p[5/2]₃ level Kr atoms. These atoms undergo energy pooling to populate the 4d’[3/2]₁ and 5d[7/2]₃ levels, followed by absorption of 811.29 nm laser energy leading to photoionization. Reducing the concentration of 5p[5/2]₃ level Kr atoms helps mitigate the reionization issue.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"330 ","pages":"Article 109233"},"PeriodicalIF":2.3,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586036","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}

{"title":"A physics-informed neural network for non-linear laser absorption tomography","authors":"Hongxu Li,&nbsp;Tao Ren,&nbsp;Changying Zhao","doi":"10.1016/j.jqsrt.2024.109229","DOIUrl":"10.1016/j.jqsrt.2024.109229","url":null,"abstract":"<div><div>Hyperspectral absorption tomography has emerged as a promising technique for combustion diagnostics due to its rich spectral measurements. However, the non-linear and ill-posed nature of the inverse problem makes obtaining accurate results challenging. This paper proposes a novel application of a physics-informed neural network to address the non-linear inverse problem in hyperspectral absorption spectroscopy. This method utilizes physical laws and measurement data to guide the neural network in finding the optimal solution, without requiring training data. To demonstrate its capabilities, the physics-informed neural network is employed to retrieve temperature and CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> mole fraction fields in axisymmetric laminar diffusion flames via <span><math><mrow><mn>4</mn><mo>.</mo><mn>3</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> TDLAS (tunable diode laser absorption spectroscopy). The developed neural network is applied to resolve the spatial distributions from the spectral dimensions, requiring fewer spatial measurements for directly retrieving temperature and CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> mole fraction profiles. We investigate the minimum radial projections needed for accurate retrievals and evaluate the model’s robustness to random noise through the inversion of a simulated flame. The developed model is further applied to reconstruct the temperature and CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> mole fraction fields for an experimentally measured flame. Our results demonstrate that the proposed model maintains high retrieval accuracy even with limited, noisy data. This work highlights the potential of the physics-informed neural network for robust solutions to non-linear laser absorption tomography problems in scientific and engineering applications.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"330 ","pages":"Article 109229"},"PeriodicalIF":2.3,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586037","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}

{"title":"Measurement of high-temperature absorption cross-sections using an optical cell with a non-uniform temperature distribution","authors":"Ihsan Farouki,&nbsp;Aamir Farooq,&nbsp;Bassam Dally","doi":"10.1016/j.jqsrt.2024.109243","DOIUrl":"10.1016/j.jqsrt.2024.109243","url":null,"abstract":"<div><div>A mathematical method to enable absorption cross-section measurements using an optical cell with a non-uniform temperature distribution is formulated, validated and experimentally demonstrated in this study. The motivation of the proposed method is to facilitate high-temperature spectroscopic studies in the long-wavelength mid-IR region, and to offer an alternative to highly engineered optical cells. The method is based on virtual segmentation of the non-uniform temperature field within an optical cell into bins, each having a sufficiently uniform temperature. By collecting a set of absorbance measurements corresponding to unique temperature profiles and expressing the temperature dependence of the absorption cross-section in terms of a model with limited number of unknowns, a closed-form system of equations is obtained which can be solved to evaluate absorption cross-sections. It is shown, through a set of simulated validation cases, that modeling the temperature dependence in terms of a third order polynomial results in accurate reconstruction of the cross-section spectra for a wide range of cases. Piece-wise polynomials and an alternative nonlinear model are proposed for improved accuracy and to model potentially complex temperature dependencies of the absorption cross-sections. To demonstrate the application of the proposed method, an optical cell with a non-uniform temperature profile was used to measure the cross-section spectra of methane over 1280 – 1330 cm^-1 at temperatures up to 523 K. The proposed method is expected to be highly useful in collecting spectroscopic data at high temperatures particularly in the mid-infrared region.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"330 ","pages":"Article 109243"},"PeriodicalIF":2.3,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593973","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}

{"title":"New experimental measurements of the Collision Induced Absorptions of H2-H2 and H2-He in the 3600-5500 cm−1 spectral range from 120 to 500 K","authors":"Francesca Vitali ,&nbsp;Stefania Stefani ,&nbsp;Giuseppe Piccioni ,&nbsp;Marcel Snels ,&nbsp;Davide Grassi ,&nbsp;David Biondi ,&nbsp;Angelo Boccaccini","doi":"10.1016/j.jqsrt.2024.109255","DOIUrl":"10.1016/j.jqsrt.2024.109255","url":null,"abstract":"<div><div>The Collision-Induced Absorption (CIA) fundamental band of H₂ has been studied in the 3600–5500 cm⁻¹ spectral range for temperatures ranging from 120 to 500 K for both a pure H₂ gas and a H₂-He mixture. We used a simulation chamber called PASSxS (Planetary Atmosphere System Simulation x Spectroscopy) developed at INAF/ISAC which contains a Multi-Pass cell interfaced with a Fourier Spectrometer, aligned to reach an optical path of 3.28 m. The H₂-H₂ and H₂-He binary absorption coefficients (BACs) have been derived for seven temperatures in the chosen range and provided in tabular form, including the unexplored high-temperature range above 300 K. We also calculated the integral of the H₂-H₂ and H₂-He experimental BACs in the reduced 4000–5000 cm⁻¹ spectral range, finding a linear trend with temperature in both cases. The integrals have also been computed with larger uncertainties for the whole band, in the total 3600–5500 cm⁻¹ spectral range including the band's wings, partially affected by the water vapor absorption. The integrals calculated over the whole and reduced spectral ranges are collected in tables. In addition, we performed measurements with a H₂-He mix for different mixing ratios to explore possible deviations from the linear combination of the BACs. The experimental BACs have been shown in comparison with Abel and Borysow's <em>ab initio</em> models for a temperature of about 400 K, resulting in a good agreement over almost the whole spectral range, with a maximum deviation around the main peak of the band. Data and models also show a good agreement in the linear trend of the integrated BACs with temperature, apart from the H₂-H₂ Borysow's BACs, which follow a quadratic trend. Finally, we resolved all the interference dips, which were not taken into account by the existing theoretical models.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"330 ","pages":"Article 109255"},"PeriodicalIF":2.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}