Interferences in photodetachment of a triatomic negative ion

Journal Article · Mon Jan 26 00:00:00 EST 2009 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3074372· OSTI ID:21175924

Afaq, A; Ahmad, M A; Rashid, A ^[1]; Ahmad, Iftikhar ^[2]; Tahir, B A ^[3]; Hussain, Muhammad Tahir ^[4]

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1. Department of Physics, COMSATS Institute of Information Technology, Lahore 54000 (Pakistan)
2. Department of Physics, Hazara University, Mansera 21300 (Pakistan)
3. Institute of Advanced Photonic Sciences, Faculty of Science, University of Technology, Johor 81310 (Malaysia)
4. Department of Applied Sciences, National Textile University, Faisalabad 37610 (Pakistan)

The photodetachment of a triatomic negative ion is studied and the detached-electron wave function is obtained as a superposition of coherent waves originating from each atom of the system. The photodetached electron flux is evaluated on a screen placed at a large distance from the system, which displays strong interferences. A simple analytical formula is also obtained for the total photodetachment cross section. The formula approaches one time the cross sections for the one-center and two-center systems in the high photon energy limits. Also it approaches three times the cross section for one-center system in the low photon energy limits.

• OSTI ID: 21175924
• Journal Information: Applied Physics Letters, Vol. 94, Issue 4; Other Information: DOI: 10.1063/1.3074372; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANIONS
CROSS SECTIONS
ELECTRON DETACHMENT
ELECTRONS
HYDROGEN IONS
INTERFERENCE
PHOTONS
WAVE FUNCTIONS