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Pressure-broadened atomic Li(2s-2p) line perturbed by ground neon atoms in the spectral wings and core |
| Sabri Bouchoucha1, Kamel Alioua2, Moncef Bouledroua3 |
1 Physics Department, Badji Mokhtar University, B. P. 12, Annaba 23000, Algeria;
2 Laboratoire de Physique de la Matiére et du Rayonnement, Chérif Messaidia University, B. P. 1553, Souk-Ahras 41000, Algeria;
3 Laboratoire de Physique des Rayonnements, Badji Mokhtar University, B. P. 12, Annaba 23000, Algeria |
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Abstract Full quantum calculations are performed to investigate the broadening profiles of the atomic lithium Li(2s-2p) resonance line induced by interactions with ground Ne(2s22p6) perturbers in the spectral wings and core. The X2Σ+, A2Π, and B2Σ+ potential-energy curves of the two first low lying LiNe molecular states, as well as the corresponding transition dipole moments, are determined with ab initio methods based on the SA-CASSCF-MRCI calculations. The emission and absorption coefficients in the wavelength range 550–800 nm and the line-core width and shift are investigated theoretically for temperatures ranging from 130 K to 3000 K. Their temperature dependence is analyzed, and the obtained results are compared with the previous experimental measurements and theoretical works.
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Received: 20 February 2017
Revised: 31 March 2017
Accepted manuscript online:
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PACS:
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32.80.-t
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(Photoionization and excitation)
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31.50.Bc
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(Potential energy surfaces for ground electronic states)
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31.50.Df
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(Potential energy surfaces for excited electronic states)
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32.70.Jz
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(Line shapes, widths, and shifts)
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Corresponding Authors:
Sabri Bouchoucha
E-mail: bsa_ur@yahoo.fr
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Cite this article:
Sabri Bouchoucha, Kamel Alioua, Moncef Bouledroua Pressure-broadened atomic Li(2s-2p) line perturbed by ground neon atoms in the spectral wings and core 2017 Chin. Phys. B 26 073202
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