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El-Kork N, AlMasri Alwan A, Abu El Kher N, Assaf J, Ayari T, Alhseinat E, Korek M. Laser cooling with intermediate state of spin-orbit coupling of LuF molecule. Sci Rep 2023; 13:7087. [PMID: 37127763 PMCID: PMC10151370 DOI: 10.1038/s41598-023-32439-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 03/28/2023] [Indexed: 05/03/2023] Open
Abstract
This work presents a theoretical study of the laser cooling feasibility of the molecule LuF, in the fine structure level of approximation. An ab-initio complete active space self-consistent field (CASSCF)/MRCI with Davidson correction calculation has been done in the Λ(±) and Ω(±) representations. The corresponding adiabatic potential energy curves and spectroscopic parameters have been investigated for the low-lying electronic states. The calculated values of the internuclear distances of the X3Σ0+ and (1)3Π0+ states show the candidacy of the molecule LuF for direct laser cooling. Since the existence of the intermediate (1)3Δ1 state cannot be ignored, the investigation has been done by taking into consideration the two transitions (1)3Π0+-(1)3Δ1 and (1)3Π0+ -X3Σ0+. The calculation of the Franck-Condon factors, the radiative lifetimes, the total branching ratio, the slowing distance, and the laser cooling scheme study prove that the molecule LuF is a good candidate for Doppler laser cooling.
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Affiliation(s)
- N El-Kork
- Department of Physics, Khalifa University, P.O. Box 57, Abu Dhabi, United Arab Emirates.
- Space and Planetary Science Centre, Khalifa University, Abu Dhabi, United Arab Emirates.
| | - A AlMasri Alwan
- Department of Physics, Khalifa University, P.O. Box 57, Abu Dhabi, United Arab Emirates
| | - N Abu El Kher
- Department of Physics, Khalifa University, P.O. Box 57, Abu Dhabi, United Arab Emirates
- Faculty of Science, Beirut Arab University, Riad El Solh, Beirut, 1107 2809, Lebanon
| | - J Assaf
- Doctoral School of Sciences and Technology, Lebanese University, Hadath, Lebanon
- Center for Educational Research and Development, CERD, Sin El Fil, Lebanon
| | - T Ayari
- Department of Physics, Khalifa University, P.O. Box 57, Abu Dhabi, United Arab Emirates
| | - E Alhseinat
- Department of Physics, Khalifa University, P.O. Box 57, Abu Dhabi, United Arab Emirates
| | - M Korek
- Faculty of Science, Beirut Arab University, Riad El Solh, Beirut, 1107 2809, Lebanon
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Olsson E, Ayari T, Ideböhn V, Wallner M, Squibb RJ, Andersson J, Roos AH, Stranges S, Dyke JM, Eland JHD, Hochlaf M, Feifel R. An experimental and theoretical characterization of the electronic structure of doubly ionised disulfur. Sci Rep 2022; 12:12236. [PMID: 35851404 PMCID: PMC9293938 DOI: 10.1038/s41598-022-16327-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 07/08/2022] [Indexed: 12/05/2022] Open
Abstract
Using time-of-flight multiple electron and ion coincidence techniques in combination with a helium gas discharge lamp and synchrotron radiation, the double ionisation spectrum of disulfur (S\documentclass[12pt]{minimal}
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\begin{document}$$_2$$\end{document}2) and the subsequent fragmentation dynamics of its dication are investigated. The S\documentclass[12pt]{minimal}
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\begin{document}$$_2$$\end{document}2 sample was produced by heating mercury sulfide (HgS), whose vapour at a suitably chosen temperature consists primarily of two constituents: S\documentclass[12pt]{minimal}
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\begin{document}$$_2$$\end{document}2 and atomic Hg. A multi-particle-coincidence technique is thus particularly useful for retrieving spectra of S\documentclass[12pt]{minimal}
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\begin{document}$$_2$$\end{document}2 from ionisation of the mixed vapour. The results obtained are compared with detailed calculations of the electronic structure and potential energy curves of S\documentclass[12pt]{minimal}
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\begin{document}$$_2^{2+}$$\end{document}22+ which are also presented. These computations are carried out using configuration interaction methodology. The experimental results are interpreted with and strongly supported by the computational results.
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Affiliation(s)
- Emelie Olsson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - Tarek Ayari
- Université Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes, 77454, Champs sur Marne, France
| | - Veronica Ideböhn
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - Måns Wallner
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - Jonas Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - Andreas Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,ELI Beamlines, Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic
| | - Stefano Stranges
- IOM-CNR Tasc, SS-14, Km 163.5 Area Science Park Basovizza, 34149, Trieste, Italy.,Dipartimento di Chimica e Tecnologie del Farmaco, Universitá Sapienza, 00185, Rome, Italy
| | - John M Dyke
- School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK
| | - John H D Eland
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, UK
| | - Majdi Hochlaf
- Université Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes, 77454, Champs sur Marne, France.
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.
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Hochlaf M, Linguerri R, Cheraki M, Ayari T, Ben Said R, Feifel R, Chambaud G. S 2O 2q+ ( q = 0, 1, and 2) Molecular Systems: Characterization and Atmospheric Planetary Implications. J Phys Chem A 2021; 125:1958-1971. [PMID: 33635674 DOI: 10.1021/acs.jpca.0c11407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We use accurate ab initio methodologies at the coupled cluster level ((R)CCSD(T)) and its explicitly correlated version ((R)CCSD(T)-F12) to investigate the electronic structure, relative stability, and spectroscopy of the stable isomers of the [S2O2] system and of some of its cations and dications, with a special focus on the most relevant isomers that could be involved in terrestrial and planetary atmospheres. This work identifies several stable isomers (10 neutral, 8 cationic, and 5 dicationic), including trigonal-OSSO, cis-OSSO, and cyc-OSSO. For all these isomers, we calculated geometric parameters, fragmentation energies, and simple and double ionization energies of the neutral species. Several structures are identified for the first time, especially for the ionic species. Computations show that in addition to cis-OSSO and trans-OSSO proposed for the absorption in the near-UV spectrum of the Venusian atmosphere other S2O2, S2O2+, and S2O22+ species may contribute. Moreover, the characterization of the stability of singly and doubly charged S2O2 entities can also be used for their identification by mass spectrometry and UV spectroscopy in the laboratory or in planetary atmospheres. In sum, the quest for the main UV absorber in Venus' atmosphere is not over, since the physical chemistry of sulfur oxides in Venus' atmosphere is far from being understood.
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Affiliation(s)
- Majdi Hochlaf
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs sur Marne, France
| | - Roberto Linguerri
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs sur Marne, France
| | - Mohamed Cheraki
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs sur Marne, France
| | - Tarek Ayari
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs sur Marne, France
| | - Ridha Ben Said
- Department of Chemistry, College of Science and Arts, Qassim University, Ar Rass 58863, Saudi Arabia
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58 Gothenburg, Sweden
| | - Gilberte Chambaud
- Université Gustave Eiffel, COSYS/LISIS, 5 Bd Descartes 77454, Champs sur Marne, France
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Ayari T, Desouter-Lecomte M, Linguerri R, Garcia GA, Nahon L, Ben Houria A, Ghalila H, Ben Said R, Hochlaf M. State-to-state dissociative photoionization of molecular nitrogen: the full story. Advances in Physics: X 2020. [DOI: 10.1080/23746149.2020.1831955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- T. Ayari
- COSYS/LISIS, Université Gustave Eiffel, Champs-sur-Marne, France
- Laboratoire De Spectroscopie Atomique, Moléculaire Et Applications – LSAMA, Université De Tunis El Manar, Tunis, Tunisia
| | - M. Desouter-Lecomte
- Institut De Chimie Physique, UMR8000, Université Paris-Saclay, CNRS, Orsay, France
| | - R. Linguerri
- COSYS/LISIS, Université Gustave Eiffel, Champs-sur-Marne, France
| | - G. A. Garcia
- Synchrotron SOLEIL, L’orme Des Merisiers, Saint-Aubin, Gif-sur-Yvette Cedex, France
| | - L. Nahon
- Synchrotron SOLEIL, L’orme Des Merisiers, Saint-Aubin, Gif-sur-Yvette Cedex, France
| | - A. Ben Houria
- Laboratoire De Spectroscopie Atomique, Moléculaire Et Applications – LSAMA, Université De Tunis El Manar, Tunis, Tunisia
| | - H. Ghalila
- Laboratoire De Spectroscopie Atomique, Moléculaire Et Applications – LSAMA, Université De Tunis El Manar, Tunis, Tunisia
| | - R. Ben Said
- Department of Chemistry, College of Science and Arts, Qassim University, Ar Rass, Saudi Arabia
| | - M. Hochlaf
- COSYS/LISIS, Université Gustave Eiffel, Champs-sur-Marne, France
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Ayari T, Hochlaf M, Mogren Al-Mogren M, Francisco JS. Characterization of the electronic states of the biological relevant SSNO molecule. J Chem Phys 2017; 146:074301. [PMID: 28228028 DOI: 10.1063/1.4975989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Using configuration interaction ab initio methods, we investigate the lowest electronic states of doublet and quartet spin multiplicities of SSNO where the one-dimensional cuts of the six-dimensional potential energy surfaces of these electronic states along the stretching and bending coordinates are computed. Mainly, these electronic states are found to be repulsive along the central SN distance. A high density of electronic states is computed even at low excitation energies that may favor their couplings. Therefore, the dynamics of the SSNO electronic states is expected to be very complex. We also characterized the bound electronic states spectroscopically where we derived their equilibrium structures and vibrational frequencies. Our calculations show the importance of taking into account of dynamical correlation, in addition to static correlation, for the accurate description of SSNO electronic excited states and more generally for those of R-NO molecular species. Finally, we highlighted the potential role of SSNO in light-induced NO delivery from SSNO related species in biological media.
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Affiliation(s)
- Tarek Ayari
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
| | - Majdi Hochlaf
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
| | - Muneerah Mogren Al-Mogren
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Joseph S Francisco
- Department of Chemistry, University of Nebraska-Lincoln, 433 Hamilton Hall, Lincoln, Nebraska 68588-0304, USA
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Ayari T, Jaidane NE, Al Mogren MM, Francisco JS, Hochlaf M. Toward the laboratory identification of [O,N,S,S] isomers: Implications for biological NO chemistry. J Chem Phys 2016; 144:234316. [PMID: 27334171 DOI: 10.1063/1.4954062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Benchmark ab initio calculations are performed to investigate the stable isomers of [O,N,S,S]. These computations are carried out using coupled cluster (RCCSD(T)) and explicitly correlated coupled cluster methods (RCCSD(T)-F12). In addition to the already known cis isomer of SSNO, nine other stable forms are predicted. The most stable isomer is cis-OSNS. Nine structures are chain bent-bent with relatively large dipole moments which make them detectable, as cis-SSNO, by infrared, far-infrared, and microwave spectroscopies. We found also a C2v isomer (NS2O). Since these species are strongly suggested to play an important role as intermediates during the bioactive reaction products of the NO/H2S interaction, the rotational and vibrational spectroscopic parameters are presented to help aid the in vivo identification and assignment of these spectra. Results from this work show that [O,N,S,S] may play key roles during nitric oxide transport and deliver in biological media, as well as, provide an explanation for the weak characteristic of disulfide bridges within proteins.
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Affiliation(s)
- Tarek Ayari
- Laboratoire Modélisation et Simulation Multi Echelle, Université Paris-Est, MSME UMR 8208 CNRS, 5 Bd Descartes, 77454 Marne-la-Vallée, France and Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA Université de Tunis Al Manar, Tunis, Tunisia
| | - Nejm-Eddine Jaidane
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA Université de Tunis Al Manar, Tunis, Tunisia
| | - Muneerah Mogren Al Mogren
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Joseph S Francisco
- Department of Chemistry and Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47906, USA
| | - Majdi Hochlaf
- Laboratoire Modélisation et Simulation Multi Echelle, Université Paris-Est, MSME UMR 8208 CNRS, 5 Bd Descartes, 77454 Marne-la-Vallée, France
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Lu Z, Chang YC, Benitez Y, Luo Z, Houria AB, Ayari T, Al Mogren MM, Hochlaf M, Jackson WM, Ng CY. State-to-state vacuum ultraviolet photodissociation study of CO2 on the formation of state-correlated CO(X1Σ+; v) with O(1D) and O(1S) photoproducts at 11.95–12.22 eV. Phys Chem Chem Phys 2015; 17:11752-62. [PMID: 25868654 DOI: 10.1039/c5cp01321f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The state-to-state photodissociation of CO2 is investigated in the VUV range of 11.94–12.20 eV.
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Affiliation(s)
- Zhou Lu
- Department of Chemistry
- University of California
- Davis
- USA
| | | | | | - Zhihong Luo
- Department of Chemistry
- University of California
- Davis
- USA
| | - Adel Ben Houria
- Laboratoire de Spectroscopie Atomique
- Moléculaire et Applications – LSAMA
- Université de Tunis El Manar
- Tunis
- Tunisia
| | - Tarek Ayari
- Laboratoire de Spectroscopie Atomique
- Moléculaire et Applications – LSAMA
- Université de Tunis El Manar
- Tunis
- Tunisia
| | | | - M. Hochlaf
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- 77454 Marne-la-Vallée
- France
| | - W. M. Jackson
- Department of Chemistry
- University of California
- Davis
- USA
| | - C. Y. Ng
- Department of Chemistry
- University of California
- Davis
- USA
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