Article
Spectroscopy
Patricia Bueno, Maria Esther Sbampato, Jose Wilson Neri, Jonas Jakutis Neto, Luiz Felipe Nardin Barreta, Jhonatha Ricardo dos Santos, Marcelo Geraldo Destro
Summary: The study introduces an experimental apparatus for investigating isotope shifts using two sub-Doppler techniques. By applying this method to erbium rare earth, isotope shifts for multiple transitions were observed and simulations were conducted using experimental data from the literature to confirm accuracy. The experimental set utilizes a portable hollow cathode lamp as an atomic source, which is cost-effective and simpler compared to other techniques like atomic beam.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Physics, Multidisciplinary
Hu Lu, Lazaros Varvarezos, Piergiorgio Nicolosi, Alberto Andrighetto, Daniele Scarpa, Emilio Mariotti, John T. Costello
Summary: This article reports on the first measurement of resonant three-step, two-colour ionization of atomic molybdenum using a hollow cathode lamp and optogalvanic detection. Wavelength scans were performed for specific transitions and successful observation of optogalvanic signals was achieved, confirming the effectiveness of the hollow cathode lamp as a spectroscopic investigation tool.
Article
Optics
L. M. Sobolewski, J. Kwela, L. Windholz
Summary: In this study, Lande g(J) factors for high lying states of the argon atom were measured using laser optogalvanic spectroscopy, with most cases having an uncertainty of less than 0.005. The Zeeman structure of 12 argon lines with wavelengths in the range 598.7-612.8 nm was investigated, and Lande g(J) factors for 9 odd parity levels were determined and data for several other levels were verified.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2021)
Article
Optics
Jhonatha Ricardo Dos Santos, Patricia Bueno, Jonas Jakutis, Alessandro R. Victor, Luiz F. N. Barreta, Maria Esther Sbampato, Jost W. Neri, Carlos A. B. Silveira, Nicolau A. S. Rodrigues, Marcelo Geraldo Destro
Summary: This work presents new data on dysprosium obtained using optogalvanic spectroscopy with a commercial hollow cathode lamp. By combining laser beams from two tunable dye lasers, 13 electronic transitions were identified that were not previously observed or registered. These transitions occurred between 555-575 nm and 585-615 nm. This study complements existing data on dysprosium and could be useful for supporting other research or applications involving this atom.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Article
Instruments & Instrumentation
David M. Surmick, Leon Taleh, Noureddine Melikechi
Summary: The impact of altering laser focusing conditions on laser-induced breakdown spectroscopy experiments was investigated in both ambient Earth laboratory and simulated Martian atmospheres. Results showed that the peak emissions of ionic species occur when the laser plasma is initiated with a focused spot within the sample in ambient Earth laboratory air, while atomic emissions have peak intensities several millimeters deeper into the sample. In simulated Martian atmospheres, atomic emissions peak when the laser is focused within the sample, while ionic emissions have peak intensities near the surface of the sample.
APPLIED SPECTROSCOPY
(2021)
Article
Optics
A. M. Razhev, D. S. Churkin, R. A. Tkachenko
Summary: For the first time, lasing on electronic transitions of neutral neon atoms was achieved by a pulsed inductive cylindrical discharge, with pure neon and its mixtures with NF3 and SF6 as active media. The optical pulses had a longer duration at a wavelength of 540.1 nm, with the maximum laser radiation energy reaching 50 μJ.
APPLIED PHYSICS B-LASERS AND OPTICS
(2021)
Article
Physics, Multidisciplinary
Daniel R. Haeupl, Daniel Weller, Robert Loew, Nicolas Y. Joly
Summary: This new type of compact and all-glass based vapour cell integrated with hollow-core photonic crystal fibers allows for faster and more uniform heating, leading to quicker filling of fibers. The all-glass design provides optical access along the fiber for live monitoring of rubidium atoms diffusion. The atomic density can be numerically retrieved using a five-level system of Bloch equations.
NEW JOURNAL OF PHYSICS
(2022)
Article
Physics, Fluids & Plasmas
C. J. Wordingham, P-Y C. R. Taunay, E. Y. Choueiri
Summary: This study develops a first-principles approach to obtain the attachment length within a hollow cathode and its scaling with internal cathode pressure. A closed-form solution for the plasma density is obtained using the ambipolar diffusion equation and an approximate boundary condition at the cathode orifice plane. The predicted plasma density profile is validated against measurements, and the scaling relations for the variation of the attachment length and electron temperature are determined.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Optics
Sanglok Lee, Sang-Bum Lee, Sang Eon Park, Hyun-Gue Hong, Myoung-Sun Heo, Sangwon Seo, Jeongyoun Jeong, Taeg Yong Kwon, Geol Moon
Summary: A compact CMTS module with high frequency stability and robustness was designed for a transportable 87 Rb atomic gravimeter, showing excellent performance. By analyzing the factors affecting frequency stability, a novel choice for applications utilizing stable laser frequency and transportable systems was provided.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Engineering, Electrical & Electronic
Chenyu Yao, Mengyuan Hu, Andrea Ventura, Juliano Grigoleto Hayashi, Francesco Poletti, Wei Ren
Summary: This study demonstrates the use of a quantum cascade laser coupled with a custom-made tellurite hollow-core antiresonant fiber for mid-infrared absorption spectroscopy for gas detection. Through direct absorption spectroscopy and wavelength modulation spectroscopy, it achieves high detection accuracy and sensitivity, particularly for nitric oxide (NO) detection.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
I. A. Sorokin, D. V. Kolodko
Summary: This article studies a planar hollow cathode discharge (HCD) system with an asymmetric negative potential applied to parallel cathodes. It is found that the hollow cathode effect can be preserved when an additional high voltage bias is applied to one of the cathodes. The performance of the HCD system under different argon pressures was investigated by measuring the current-voltage characteristics of the iron cathode/target. In addition, the iron deposition rate in a sputtering system based on the HCD was studied under different conditions.
Article
Biochemistry & Molecular Biology
Yanxiang Wu, Songxue Wang, Weibing Cui, Wei Tian, Jieqiong Zhang, Xi Chen, Minghui Zhou
Summary: This paper presents a rapid, low-cost, and highly automated method for detecting Cd and Pb in cereals. The method uses a diluted acid extraction pre-treatment method and a high-performance lead-cadmium composite hollow-cathode lamp, and achieves automatic determination from sample weighing to result output through an automatic diluted acid extraction system.
Article
Chemistry, Multidisciplinary
Can Guo, Ming Liu, Guang-Kuo Gao, Xi Tian, Jie Zhou, Long-Zhang Dong, Qi Li, Yifa Chen, Shun-Li Li, Ya-Qian Lan
Summary: The study demonstrates that COFs can act as microadditives in Li-S batteries and enhance the reversible capacity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Optics
Takumi Sato, Yusuke Hayakawa, Naohiro Okamoto, Yusuke Shimomura, Takatoshi Aoki, Yoshio Torii
Summary: We present a robust method of stabilizing a laser to the frequency of an atomic transition using a hollow cathode lamp. Instead of the standard dichroic atomic vapor laser lock method, we utilize birefringence induced by a transversal magnetic field.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Zhan Gao, Guo-ge Lu, Liu-cheng Cao, Zong-xiu Zhu, Ying-xin Li, Fu-xiang Wei, Zhe Ji, Yan-wei Sui, Ji-qiu Qi, Qing-kun Meng, Yao-jian Ren
Summary: Core-shell structured Mn2O3@ZnMn2O4/C hollow microspheres are reported as an ideal cathode material for AZIBs, addressing the problems of capacity decline and low-rate performance. Its application in AZIBs demonstrates satisfactory rate performance, high cycle stability, and excellent reversibility. With a high reversible capacity reaching 289.9 mA h g(-1) and maintaining 203.5 mA h g(-1) after cycling 700 times at 1000 mA g(-1), this material shows great potential for AZIBs.
DALTON TRANSACTIONS
(2023)
Article
Physics, Atomic, Molecular & Chemical
Seyed Mohammad Seyed Khademi, Ursula Telgheder, Younes Valadbeigi, Vahideh Ilbeigi, Mahmoud Tabrizchi
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2019)
Article
Physics, Atomic, Molecular & Chemical
Manijeh Tozihi, Hamed Bahrami, Bahman Farajmand, Mahmoud Tabrizchi
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2020)
Article
Physics, Atomic, Molecular & Chemical
Younes Valadbeigi, Vahideh Ilbeigi, Hossein Farrokhpour, Mahmoud Tabrizchi
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2020)
Article
Biochemical Research Methods
Younes Valadbeigi, Vahideh Ilbeigi, Mehdi Vahidi, Bartosz Michalczuk, Stefan Matejcik, Mahmoud Tabrizchi
JOURNAL OF CHROMATOGRAPHY A
(2020)
Review
Chemistry, Analytical
Chuang Chen, Mahmoud Tabrizchi, Haiyang Li
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2020)
Article
Physics, Atomic, Molecular & Chemical
Naader Alizadeh, Razieh Parchami, Edwin De Pauw, Mahmoud Tabrizchi
Summary: In this study, gas-phase interactions between macrocyclic ligands and various molecular ion guests were investigated using ion mobility spectrometry and mass spectrometry. Different complexation behaviors of ligands showed that the nature of species formed strongly depends on the structural features of the host.
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2021)
Article
Chemistry, Multidisciplinary
Razieh Amiri, Hossein Farrokhpour, Mahmoud Tabrizchi
Summary: The study investigated the effects of salts on the spectra of phenylalanine amino acid (FAA) by MALDI and direct-LDI, showing that salts can suppress matrix-originated peaks in MALDI spectra and have an influence on FAA spectra. In the presence of NaF, a characteristic peak was observed in both direct-LDI and MALDI, indicating clearer spectra in direct-LDI compared to MALDI.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2021)
Article
Biochemical Research Methods
Razieh Parchami, Mahmoud Tabrizchi
Summary: The performed experiments showed that the relationship between the drift times of small ions and their cross-sections did not match the expected model, leading to the proposal of a modified equation to accurately describe this relationship.
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2021)
Article
Biochemistry & Molecular Biology
Sahar Hafizi Yazdabadi, Hossein Farrokhpour, Mahmoud Tabrizchi
Summary: The study investigated the applicability of two surfactants as the matrix for MALDI analysis of amino acids and compared the results with direct-LDI TOF mass spectra. SDS showed good performance for phenylalanine and valine, but not for other amino acids.
BIOPHYSICAL CHEMISTRY
(2021)
Article
Spectroscopy
H. Farrokhpour, M. Aboutorab, R. Amiri, M. Tabrizchi
Summary: In this study, LDI-TOF mass spectrometry was utilized to investigate the attachment of Na+ and Li+ ions to four dipeptides. The different fragmentation patterns of the dipeptides in the presence of Na+ and Li+ ions were explored, and theoretical calculations were used to determine the most stable structure of the [dipeptide-H + 2Na]+ species for each dipeptide.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Energy & Fuels
Kiomars Zargoosh, Mahmoud Salmanian, Mahmoud Tabrizchi, Hossein Farrokhpour
Summary: In this study, an optimized ion mobility spectrometer (IMS) method was developed for the fast, sensitive, selective, and low-cost determination of sulfur-free odorants in natural gas. The proposed method can detect the odorants in less than 2 minutes with a total cost of less than $0.10 per analysis.
Article
Biochemical Research Methods
Mahmoud Tabrizchi, Elaheh Maki Abadi, Razieh Parchami, Elham Fadaei
Summary: This study investigated the dynamic response of an Ion Mobility Spectrometer (IMS) to different inputs and developed a mathematical model based on two phenomena. The experimental results were in good correlation with the model predictions. The findings have practical implications for GC-IMS and IMS-based detectors.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Masood Dodangeh, Hossein Farrokhpour, Mahmoud Tabrizchi, Hassan Seyed Ghaziaskar
Summary: This study introduces a sample preparation method for qualitative and quantitative analysis of copper ore using LDI-TOF-MS, ensuring accuracy and reliability of the technique. The method can be applied to elemental analysis of other insoluble solid samples as well, without the need for additional specialized equipment.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Spectroscopy
Razieh Parchami, Mahmoud Tabrizchi, Hassan Shahraki, Ali Moaddeli
INTERNATIONAL JOURNAL FOR ION MOBILITY SPECTROMETRY
(2020)
Article
Spectroscopy
Masood Asadi, Younes Valadbeigi, Mahmoud Tabrizchi
INTERNATIONAL JOURNAL FOR ION MOBILITY SPECTROMETRY
(2019)
Article
Optics
Jianbao Zhao, Brant E. Billinghurst, Paul L. Raston
Summary: The far-infrared spectrum of room temperature formic acid labeled with 13C has been recorded and analyzed, leading to the determination of accurate line positions and predictions relevant to Earth's atmosphere and interstellar sources.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Semen Vasilchenko, Alexander Solodov, Oleg Egorov, Vladimir Tyuterev
Summary: Ozone plays a crucial role in atmospheric chemistry and radiative processes, and it may serve as a potential biosignature species in exoplanetary observations. This study utilized a continuous-wave cavity-ring-down spectrometer to accurately measure the absorption cross-sections of ozone in the near-infrared range. The results provide more precise data and have potential applications in atmospheric research.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Baorui Huang, Bo Peng, Qifeng Ren, Sheng Liao
Summary: This study utilizes the polarization bidirectional reflectance distribution function (p-BRDF) model derived from the microfacet theory to analyze the spectral p-BRDF of a brass surface. The results show that factors such as polarization state, wavelength, surface roughness, and permittivity have a significant impact on the distribution of BRDF on the object surface.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Qingwei Duan, Jiajie Wang, Qiwei Li, Xiang'e Han, Kuan Fang Ren
Summary: This paper introduces the applications of the generalized Lorenz-Mie theory (GLMT) and the vectorial complex ray model (VCRM) in the interaction between beams and particles. By comparing the experimental results, it is found that VCRM performs well in Gaussian beam scattering problems, providing a new method for studying the scattering of shaped beams by large particles/objects of any shape.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Yuefan Du, Xiaoping Li, Lei Shi, Fangyan Li, Shurong Yuan
Summary: This study proposes a physics-constrained model that utilizes the distribution characteristics of gas spectral parameters to predict spectral parameters for unknown wavelengths. Experimental results show that the model improves prediction accuracy and increases the data volume of gas spectral parameters by 4-5 times.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Laurentius Windholz, Imran Siddiqui, Shamim Khan, Syed Tanweer Iqbal
Summary: In this study, we report the discovery of two energy levels of the Pr atom that exhibit strong J-mixing, as well as the observed hyperfine structure patterns. The composition of wave functions, in addition to J-values, plays a crucial role in determining the appearance of these patterns.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Matthias Germann, Adrian Hjalten, Jonathan Tennyson, Sergei N. Yurchenko, Iouli E. Gordon, Christian Pett, Isak Silander, Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Gluszek, Grzegorz Sobon, Aleksandra Foltynowicz
Summary: In this study, optical frequency comb Fourier transform spectroscopy was used to record the spectroscopic data of formaldehyde in a specific frequency range. The line positions and intensities of rovibrational transitions were obtained through line-by-line fitting. By incorporating these accurate line positions into the analysis, more energy levels and rovibrational transitions were predicted with reduced uncertainties in the H2CO spectrum.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Leonardo A. Ambrosio, Jhonas O. de Sarro, Gerard Gouesbet
Summary: This study derives a polychromatic version of the generalized Lorenz-Mie theory stricto sensu (GLMT) by expanding arbitrary time-dependent fields into partial waves using Bromwich scalar potentials. The new formalism introduces field shape spectra (FSSs) which are intrinsically frequency-dependent, modifying and redefining the physical quantities expressed in the monochromatic GLMT.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Patrick C. Chaumet
Summary: The paper proposes two new methods (IDR(s) and GPBiCGstab(L)) for computing the electromagnetic diffraction of objects larger than the wavelength. It is found that IDR(s) can reduce computation time but may not converge in some cases, while GPBiCGstab(L) always converges and also reduces computation time compared to QMR, GPBiCG, and BiCGstab.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Antigoni Kleanthous, Anthony J. Baran, Timo Betcke, David P. Hewett, Christopher D. Westbrook
Summary: To improve weather and climate models, it is important to accurately calculate the single-scattering properties of randomly oriented complex atmospheric ice crystals. This study applies Boundary Element Method (BEM) to calculate these properties in the microwave and sub-millimeter region of the electromagnetic spectrum for all-sky data assimilation. The results show that BEM can accurately compute the scattering properties of complex ice aggregates, which is crucial for weather and climate models.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Ben Niu, Yanting Li, Gang Xiong, Jihui Chen, Zhimin Hu, Yunqing Fu, Yaming Zou, Chongyang Chen, Ke Yao
Summary: This study presents both experimental and theoretical analysis of the 4d 2D5/2 -> 2D3/2 magnetic dipole transition in Rb-like ions. The correlation between the theoretical and experimental findings is observed, and it is illustrated that the contribution of the core-valence correlation is pivotal for the fine structure splittings.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
James A. Lock, Gunther P. Konnen, Philip Laven
Summary: Researchers have derived an analytical generalization of Airy theory that provides a more accurate approximation for the primary rainbow, but still has limitations for the second-order rainbow and beyond.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Shixiong Wu, Xuebang Gao, Xuqiang Dou, Li Xie
Summary: In this paper, an indoor experimental study was conducted to investigate the optical attenuation caused by sand/dust storms at different relative humidity levels. It was found that the hygroscopic growth of sand/dust particles has a significant effect on optical attenuation when the relative humidity is above 60%. Based on the double-parameter Kasten model, a proposed optical attenuation model takes into account visibility, particle size, relative humidity, and optical wavelength. Numerical calculations considering the hygroscopicity effect were also performed, and the results were in agreement with the experimental data.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Zhimin Yang, Jaeman Song, Bong Jae Lee
Summary: In this study, we analyze TPX cells operating in the self-sustaining circuit and examine the effects of different bandgaps on their performance. The results show that the bandgap energy of the LED must exceed that of the PV cell for the TPX cell to function in a self-sustaining parallel circuit. Additionally, a narrower bandgap energy for the PV cell and a wider bandgap energy for the LED can improve the performance of the TPX cell in the self-sustaining circuit.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
