On the determination of partial differential cross sections for photodetachment and photoionization processes producing polyatomic molecules with electronic states coupled by conical intersections

2011 ◽  
Vol 134 (13) ◽  
pp. 134110 ◽  
Author(s):  
Seungsuk Han ◽  
David R. Yarkony
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Electronic States ◽  
Polyatomic Molecules ◽  
Differential Cross Sections ◽  
Conical Intersections ◽  
Partial Differential

Measurement and pion exchange analysis of the inclusive spectra np→pX0 between 1.4 and 1.9 GeV/c and determination of the differential cross sections np→pΔ330

1976 ◽  
Vol 108 (2) ◽  
pp. 189-213 ◽  
Author(s):  
G. Bizard ◽  
F. Bonthonneau ◽  
J.L. Laville ◽  
F. Lefebvres ◽  
J.C. Malherbe ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Pion Exchange ◽  
Differential Cross Sections

scholarly journals Deconvolution of Overlapping Features in Electron Energy-loss Spectra: Determination of Absolute Differential Cross Sections for Electron-impact Excitation of Electronic States of Molecules

1997 ◽  
Vol 50 (3) ◽  
pp. 525 ◽  
Author(s):  
L. Campbell ◽  
P. J. O. Teubner ◽  
M. J. Brunger ◽  
B. Mojarrabi ◽  
D. C. Cartwright
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Cross Sections ◽  
Differential Cross ◽  
Electronic States ◽  
Impact Excitation ◽  
Spectroscopic Constants ◽  
Differential Cross Sections ◽  
Electron Energy Loss ◽  
Electron Energy Loss Spectra

A set of three computer programs is reported which allow for the deconvolution of overlapping molecular electronic state structure in electron energy-loss spectra, even in highly perturbed systems. This procedure enables extraction of absolute differential cross sections for electron-impact excitation of electronic states of diatomic molecules from electron energy-loss spectra. The first code in the sequence uses the Rydberg–Klein–Rees procedure to generate potential energy curves from spectroscopic constants, and the second calculates Franck–Condon factors by numerical solution of the Schrödinger equation, given the potential energy curves. The third, given these Franck–Condon factors, the previously calculated relevant energies for the vibrational levels of the respective electronic states (relative to the v″ = 0 level of the ground electronic state) and the experimental energy-loss spectra, extracts the differential cross sections for each state. Each program can be run independently, or the three can run in sequence to determine these cross sections from the spectroscopic constants and the experimental energy-loss spectra. The application of these programs to the specific case of electron scattering from nitric oxide (NO) is demonstrated.

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