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Ben Hadj Ayed M, Hamdi R, Ghalla H, Oujia B, Gadéa FX. Theoretical investigation of the electronic properties of alkali atoms interacting with helium rare gas using a pseudopotential approach. Theor Chem Acc 2018. [DOI: 10.1007/s00214-018-2266-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Dhiflaoui J, Bejaoui M, Farjallah M, Berriche H. Investigation of the electronic structure of Be 2+He and Be +He, and static dipole polarisabilities of the helium atom. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1429686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J. Dhiflaoui
- Laboratory of Interfaces and Advanced Materials, Physics Department, Faculty of Science, University of Monastir, Monastir, Tunisia
| | - M. Bejaoui
- Laboratory of Interfaces and Advanced Materials, Physics Department, Faculty of Science, University of Monastir, Monastir, Tunisia
| | - M. Farjallah
- Laboratory of Interfaces and Advanced Materials, Physics Department, Faculty of Science, University of Monastir, Monastir, Tunisia
| | - H. Berriche
- Laboratory of Interfaces and Advanced Materials, Physics Department, Faculty of Science, University of Monastir, Monastir, Tunisia
- Department of Mathematics and Natural Sciences, School of Arts and Sciences, American University of Ras Al Khaimah, Ras Al Khaimah, UAE
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Bejaoui M, Dhiflaoui J, Mabrouk N, El Ouelhazi R, Berriche H. Theoretical Investigation of the Electronic Structure and Spectra of Mg(2+)He and Mg(+)He. J Phys Chem A 2016; 120:747-53. [PMID: 26783874 DOI: 10.1021/acs.jpca.5b10089] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The ground and many excited states of the Mg(+)He van der Waals molecular system have been explored using a one-electron pseudopotential approach. In this approach, effective potentials are used to consider the Mg(2+) core and the electron-He effects. Furthermore, a core-core interaction is included. This has reduced the number of active electrons of the Mg(+)He, to be considered in the calculation, to a single valence electron. This has permitted to use extended Gaussian basis sets for Mg and He. Therefore, the potentianl energy and dipole moments calculations are carried out at the Hartree-Fock level of theory, and the spin-orbit effect is included using a semiclassical approach. The core-core interaction for the Mg(2+)He ground state is included using accurate CCSD(T) calculations. The spectroscopic constants of the Mg(+)He electronic states are extracted and compared with the existing theoretical works, where very good agreement is observed. Moreover, the transition dipole function has been determined for a large and dense grid of internuclear distances including the spin-orbit effect.
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Affiliation(s)
- M Bejaoui
- Laboratory of Interfaces and Advanced Materials, Physics Department, Faculty of Science, University of Monastir , Avenue de L'Environnment, 5019 Monastir, Tunisia
| | - J Dhiflaoui
- Laboratory of Interfaces and Advanced Materials, Physics Department, Faculty of Science, University of Monastir , Avenue de L'Environnment, 5019 Monastir, Tunisia
| | - N Mabrouk
- Laboratory of Interfaces and Advanced Materials, Physics Department, Faculty of Science, University of Monastir , Avenue de L'Environnment, 5019 Monastir, Tunisia
| | - R El Ouelhazi
- Laboratory of Interfaces and Advanced Materials, Physics Department, Faculty of Science, University of Monastir , Avenue de L'Environnment, 5019 Monastir, Tunisia
| | - H Berriche
- Laboratory of Interfaces and Advanced Materials, Physics Department, Faculty of Science, University of Monastir , Avenue de L'Environnment, 5019 Monastir, Tunisia.,Department of Mathematics and Natural Sciences, School of Arts and Sciences, American University of Ras Al Khaimah , Ras Al Khaimah, P.O. Box, RAK, United Arab Emirates
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Salem FB, Rhouma MBEH, Spiegelman F, Mestdagh JM, Hochlaf M. Theoretical investigations of the electronic states of NaXe: A comparative study. J Chem Phys 2012; 137:224310. [DOI: 10.1063/1.4769286] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Dhiflaoui J, Berriche H, Herbane M, Alsehimi AG, Heaven MC. Electronic structure and spectra of the RbAr van der Waals system including spin-orbit interaction. J Phys Chem A 2012; 116:10589-96. [PMID: 22998459 DOI: 10.1021/jp301486t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The potential energy curves and spectroscopic constants of the ground and excited states of the RbAr van der Waals system have been determined using a one-electron pseudopotential approach. This technique is used to replace the effect of the Rb(+) core and the electron-Ar interactions by effective potentials. The core-core interaction for Rb(+)Ar was incorporated using the accurate CCSD(T) potential of Hickling et al. [Hickling, H. L.; Viehland, L. A.; Shepherd, D. T.; Soldán, P.; Lee, E. P. F.; Wright, T. G. Phys. Chem. Chem. Phys. 2004, 6, 4233-4239]. This model reduces the number of active electrons of the RbAr van der Waals systems to just the single valence electron, permitting the use of very large basis sets for the Rb and Ar atoms. Using this approach, the potential energy curves of the ground and excited states dissociating into Rb(5s, 5p, 4d, 6s, 6p, 6d, and 7s) + Ar are calculated at the SCF level. Spin-orbit interaction was also considered within a semiempirical scheme for the states dissociating into Rb(5p) and Rb(6p). Spectroscopic constants are derived and compared with the available theoretical and experimental data. Such comparisons for RbAr show very good agreement for the ground and the first excited states. Furthermore, we have predicted the B(2)Σ(+)(1/2) ← X(2)Σ(+), A(2)Π(1/2) ← X(2)Σ(+), A(2)Π(3/2) ← X(2)Σ(+), A(2)Π(3/2) ← X(2)Σ(+), 5(2)Σ(+) ← X(2)Σ(+), 3(2)Π(1/2) ← X(2)Σ(+), and 3(2)Π(3/2) ← X(2)Σ(+) absorption spectra.
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Affiliation(s)
- J Dhiflaoui
- Laboratoire des Interfaces et Matériaux Avancés, Faculté des Sciences, Université de Monastir, Avenue de l'Environnement, 5019 Monastir, Tunisia
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El Hadj Rhouma MB, Ben Lakhdar Z, Berriche H, Spiegelman F. Rydberg states of small NaArn* clusters. J Chem Phys 2006; 125:084315. [PMID: 16965020 DOI: 10.1063/1.2229210] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The 4s and 5s Rydberg excited states of NaAr(n)* clusters are investigated using a pseudopotential quantum-classical method. While NaAr(n) clusters in their ground state are known to be weakly bound van der Waals complexes with Na lying at the surface of the argon cluster, isomers in 4s or 5s electronically excited states of small NaAr(n)* clusters (n< or =10) are found to be stable versus dissociation. The relationship between electronic excitation and cluster geometry is analyzed as a function of cluster size. For both 4s and 5s states, the stable exciplex isomers essentially appear as sodium-centered structures with similar topologies, converging towards those of the related NaAr(n)+ positive ions when the excitation level is increased. This is consistent with a Rydberg-type picture for the electronically excited cluster, described by a central sodium ion solvated by an argon shell, and an outer diffuse electron orbiting around this NaAr(n)+ cluster core.
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Affiliation(s)
- M Ben El Hadj Rhouma
- Laboratoire d'Etudes des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d'Ingénieurs, 5019 Monastir, Tunisia
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Spiegelman F, Maron L, Breckenridge WH, Mestdagh JM, Visticot JP. Two-electron pseudopotential investigation of the electronic structure of the CaAr molecule. J Chem Phys 2002. [DOI: 10.1063/1.1506921] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Jonin C, Laporte P, Spiegelmann F. Pseudopotential hole–particle formalism for excitations in xenon molecules and clusters. I. Theory, atomic and molecular tests. J Chem Phys 2002. [DOI: 10.1063/1.1491399] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Rhouma MBEH, Berriche H, Lakhdar ZB, Spiegelman F. One-electron pseudopotential calculations of excited states of LiAr, NaAr, and KAr. J Chem Phys 2002. [DOI: 10.1063/1.1429247] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Masnou-Seeuws F, Philippe M, Roueff E, Spielfiedel A. Differential cross section for thermal Na-Ne scattering: a comparison of experimental and theoretical results. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3700/12/24/013] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Nieuwesteeg KJ, Hollander T, Alkemade CTJ. A study of collisional broadening of the Na D lines by neon and xenon perturbers. II. The line wings. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/20/3/014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hennecart D, Masnou-Seeuws F. Model potential calculations for the excited states of Ne*-He and Ne*-Ne. Application to the interpretation of collision experiments. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/18/4/013] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Masnou-Seeuws F. Model potential calculations for the KHe and KNe molecular systems: comparison with the predictions of the asymptotic methods. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/15/6/014] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Delhoume M, Brillet WUL, Masnou-Seeuws F, Feautrier N, Rostas F. Quasi-static wings and blue satellite of the K(4S-5P) doublet perturbed by neon. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/14/20/010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Nieuwesteeg KJ, Leegwater JA, Hollander T, Alkemade CTJ. A study of collisional broadening of the Na D lines by neon and xenon perturbers. I. The line core. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/20/3/013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Shingal R, Bransden BH, Ermolaev AM, Flower DR, Newby CW, Noble CJ. Charge transfer in H+-Na0collisions: atomic orbital calculations. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/19/3/014] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Valiron P, Roche AL, Masnou-Seeuws F, Dolan ME. Molecular treatment of collisions between a Rydberg sodium atom and a rare-gas perturber. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/17/14/011] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Reznikov AI. Estimation of rate coefficients for lithium fine-structure mixing induced by collisions with noble-gas atoms. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/15/5/005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Arif M, Jungen C, Roche AL. The Rydberg spectrum of CaF and BaF: Calculation by R-matrix and generalized quantum defect theory. J Chem Phys 1997. [DOI: 10.1063/1.473124] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Duplàa P, Spiegelmann F. A pseudopotential hole‐particle treatment of neutral rare gas excimer systems. I. Formalism. J Chem Phys 1996. [DOI: 10.1063/1.472011] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Kucal H, Hennecart D, Masnou-Seeuws F. Model potential methods for the treatment of collisions between an excited rare gas and a ground state rare gas: Accuracy and limitations. Chem Phys 1990. [DOI: 10.1016/0301-0104(90)89113-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Czuchaj E, Rebentrost F, Stoll H, Preuss H. Semi-local pseudopotential calculations for the adiabatic potentials of alkali-neon systems. Chem Phys 1989. [DOI: 10.1016/0301-0104(89)80130-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Callender CL, Mitchell SA, Hackett PA. Interatomic potentials for van der Waals complexes of group 13 metal atoms: InAr, InKr, and InXe. J Chem Phys 1989. [DOI: 10.1063/1.455950] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Du NY, Greene CH. Interaction between a Rydberg atom and neutral perturbers. PHYSICAL REVIEW. A, GENERAL PHYSICS 1987; 36:971-974. [PMID: 9898951 DOI: 10.1103/physreva.36.971] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Havey MD, Delahanty FT, Vahala LL, Copeland GE. Experimental fine-structure branching ratios for Na-rare-gas optical collisions. PHYSICAL REVIEW. A, GENERAL PHYSICS 1986; 34:2758-2766. [PMID: 9897592 DOI: 10.1103/physreva.34.2758] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Düren R, Moritz G. Improved model calculations for the alkali–rare gas interaction. J Chem Phys 1980. [DOI: 10.1063/1.439994] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Vallee O, Tran Minh N, Chapelle J. The interaction between excited and ground state rare gas atoms. II. Homonuclear excimers with spin–orbit coupling. J Chem Phys 1980. [DOI: 10.1063/1.440447] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Experiments and Model Calculations to Determine Interatomic Potentials. ACTA ACUST UNITED AC 1980. [DOI: 10.1016/s0065-2199(08)60006-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
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