Interferences in photodetachment of a triatomic negative ion

• Main Authors: Afaq, A., Ahmad, Iftikhar, Ahmad, M. A., Rashid, A., Tahir, B. A., Hussain, Muhammad Tahir
• Format: Article
• Published: American Institute of Physics 2009
• Subjects: Q Science (General)
• Online Access: http://eprints.utm.my/id/eprint/12902/; http://dx.doi.org/10.1063/1.3074372

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.