The Role of Intermediate States in the Excitation of Atoms by Electron Impact

1971 ◽  
pp. 37-44
Author(s):  
L. A. Vainshtein ◽  
L. P. Presnyakov
Keyword(s):  
Electron Impact ◽  
Intermediate States

scholarly journals Few Body Effects in the Electron and Positron Impact Ionization of Atoms

Atoms ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 33
Author(s):  
R.I. Campeanu ◽  
Colm T. Whelan
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Differential Cross ◽  
Impact Ionization ◽  
Inert Gas ◽  
Interference Effects ◽  
Positron Impact ◽  
Competing Interactions ◽  
Energy Sharing

Triple differential cross sections (TDCS) are presented for the electron and positron impact ionization of inert gas atoms in a range of energy sharing geometries where a number of significant few body effects compete to define the shape of the TDCS. Using both positrons and electrons as projectiles has opened up the possibility of performing complementary studies which could effectively isolate competing interactions that cannot be separately detected in an experiment with a single projectile. Results will be presented in kinematics where the electron impact ionization appears to be well understood and using the same kinematics positron cross sections will be presented. The kinematics are then varied in order to focus on the role of distortion, post collision interaction (pci), and interference effects.

scholarly journals The Semiclassical Limit of the Gailitis Formula Applied to Electron Impact Broadening of Spectral Lines of Ionized Atoms

Atoms ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 29
Author(s):  
Sylvie Sahal-Bréchot
Keyword(s):  
Electron Impact ◽  
Classical Limit ◽  
Semiclassical Limit ◽  
Spectral Lines ◽  
Stark Broadening ◽  
Feshbach Resonances

The present paper revisits the determination of the semi-classical limit of the Feshbach resonances which play a role in electron impact broadening (the so-called “Stark“ broadening) of isolated spectral lines of ionized atoms. The Gailitis approximation will be used. A few examples of results will be provided, showing the importance of the role of the Feshbach resonances.

Electron-impact ionization ofNe(2p)andAr(3p)at intermediate energies: Role of the postcollision interaction

2017 ◽  
Vol 96 (5) ◽  
Author(s):  
Xiaoqing Hu ◽  
Cong-Zhang Gao ◽  
Zhanbin Chen ◽  
Jianguo Wang ◽  
Yong Wu ◽  
...  
Keyword(s):  
Electron Impact ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Intermediate Energies

Two-phonon capture processes into quantum dots: the role of intermediate states

2003 ◽  
Vol 17 ◽  
pp. 111-113
Author(s):  
I. Magnusdottir ◽  
A.V. Uskov ◽  
S. Bischoff ◽  
B. Tromborg ◽  
J. Mørk
Keyword(s):  
Quantum Dots ◽  
Intermediate States

Three-Body Fragmentation from Single Ionization of Water by Electron Impact: The Role of Satellite States

2017 ◽  
Vol 121 (17) ◽  
pp. 3234-3238 ◽  
Author(s):  
Natalia Ferreira ◽  
L. Sigaud ◽  
E. C. Montenegro
Keyword(s):  
Electron Impact ◽  
Single Ionization ◽  
Three Body ◽  
Ionization Of Water

Production and Emissions of Atomic Carbon and Oxygen in the Inner Coma of Comet Halley: Role of Electron Impact

Icarus ◽  
1996 ◽  
Vol 120 (2) ◽  
pp. 412-430 ◽  
Author(s):  
A. Bhardwaj ◽  
S.A. Haider ◽  
R.P. Singhal
Keyword(s):  
Electron Impact ◽  
Atomic Carbon ◽  
Comet Halley
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