| ATOMIC AND MOLECULAR PHYSICS |
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Photodetachment of a Homo-Nuclear Linear Tetra-Atomic Negative Molecular Ion |
| A. Rahman,Iftikhar Ahmad**,A. Afaq,H. J. Zhao |
1Department of Physics, Hazara University, Mansehra, Pakistan
2Department of Physics, University of Malakand, Chakdara, Pakistan
3Centre of Excellence in Solid State Physics, University of the Punjab, Quid-e-Azam Campus, Lahore-54590, Pakistan
4School of Physics and Information Science, Shanxi Normal University, Linfen 041004 |
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| Cite this article: |
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A. Rahman, Iftikhar Ahmad, A. Afaq et al 2012 Chin. Phys. Lett. 29 043301 |
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Abstract The photodetachment of a homo-nuclear linear tetra-atomic negative molecular ion is studied theoretically for an arbitrary laser polarization. An expression for the total cross section is obtained by using an extended version of the two center model, where each center acts as a source of coherent photodetached-electron waves. Strong oscillations on observation plane, placed at a large distance from the ion, are observed. The amplitude of these oscillations is maximum when the laser polarization is parallel to the molecular axis. Furthermore, the amplitude decreases as the angle between the laser polarization and molecular axis increases and consequently vanishes when they are perpendicular to each other. It is also found that if the distance between the adjacent centers is very small or very large, then the amplitude of oscillations is negligibly small.
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Received: 09 December 2011
Published: 04 April 2012
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| PACS: |
33.80.-b
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(Photon interactions with molecules)
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| [1] Rahman A, Ahmad I, Afaq A and Haneef M 2011 Chin. Phys. Lett. 28 063301[2] Afaq A, Ahmad I, Ahmad M A, Rashid A, Tahir B A and Hussain M T 2009 Appl. Phys. Lett. 94 041125[3] Afaq A and Ahmad I 2011 Int. J. Quantum Chem. 111 4067[4] Sheehan S M, Parsons B F, Zhou J, Garand E, Yen T A, Moore D T and Neumark D M 2008 J. Chem. Phys. 128 034301[5] Jutier L 2010 J. Chem. Phys. 133 034107[6] Jutier L, Lonard C and Gatti F 2009 J. Chem. Phys. 130 134302[7] Kozin I N, Law M M, Tennyson J and Hutson J M 2005 J. Chem. Phys. 122 064309[8] Chen G and Balasubramaniana K 2007 Chem. Phys. Lett. 438 162[9] Kozin I N, Law M M, Hutson J M and Tennyson J 2003 J. Chem. Phys. 118 4896[10] He S and Clouthier D J 2005 J. Chem. Phys. 123 014317[11] Peric M 2006 Chem. Phys. 330 73[12] Rahman A, Ahmad I, Afaq A, Haneef M and Zhao H J 2011 Chin. Phys. Lett. 28 083301[13] Afaq A and Du M L 2009 J. Phys. B: At. Mol. Opt. Phys. 42 105101[14] Wang D H, T Tang and Wang S 2010 Mol. Phys. 108 1385[15] Yang B C and Du M L 2010 Commun. Theor. Phys. 53 545[16] Du M L 2006 Eur. Phys. J. D 38 533[17] Du M L 1989 Phys. Rev. A 40 4983[18] Du M L and Delos J B 1988 Phys. Rev. A 38 5609 |
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