Compton ionization of hydrogen atom near threshold by photons in the energy range of a few keV: nonrelativistic approach

2020 ◽  
Vol 74 (4) ◽  
Author(s):  
Salim Houamer ◽  
Ochbadrakh Chuluunbaatar ◽  
Igor P. Volobuev ◽  
Yuri V. Popov
Keyword(s):  
Hydrogen Atom ◽  
Energy Range ◽  
Near Threshold

Electron excitation of hydrogen atom by ions impact in the energy range 20–1000 keV/amu

2009 ◽  
Vol 83 (9) ◽  
pp. 1259-1269 ◽  
Author(s):  
S. Ghosh ◽  
M. Purkait ◽  
S. Sounda ◽  
A. Dhara ◽  
C. R. Mandal
Keyword(s):  
Hydrogen Atom ◽  
Energy Range ◽  
Electron Excitation

Orientation of a hydrogen atom excited by an electron impact near threshold

2004 ◽  
Vol 49 (11) ◽  
pp. 625-629
Author(s):  
A. V. Demura ◽  
G. V. Demchenko ◽  
G. V. Sholin
Keyword(s):  
Hydrogen Atom ◽  
Electron Impact ◽  
Near Threshold

scholarly journals Attachment of Electrons to Molecules at meV Resolution

1992 ◽  
Vol 45 (3) ◽  
pp. 263 ◽  
Author(s):  
D Klar ◽  
M-W Ruf ◽  
H Hotop
Keyword(s):  
Energy Range ◽  
Energy Resolution ◽  
Electron Attachment ◽  
Effective Energy ◽  
Near Threshold

A selective discussion of electron attachment to molecules is presented with emphasis on recent studies of SF6, carried out with a novel laser photoelectron attachment (LPA) method in the energy range 0�1-170 me V with an effective energy resolution around 0�1 me V near threshold.

High resolution studies of electron excitation III. Polarization near threshold of light from the 4D states of helium

1974 ◽  
Vol 337 (1610) ◽  
pp. 443-450 ◽  
Keyword(s):  
Angular Momentum ◽  
High Resolution ◽  
Energy Range ◽  
Threshold Value ◽  
Electron Excitation ◽  
Instrumental Polarization ◽  
Rapid Fall ◽  
Near Threshold

We have measured the polarization of the helium lines at 492.2 nm (4 1 D-2 1 P) and 447.2 nm (4 3 D-2 3 P) over an energy range of about 0.8 eV above threshold using velocity selected electrons. The measurements are free from the effects of instrumental polarization. In both cases we find that the value of the polarization at the lowest energies for which we can detect a signal is quite consistent with the threshold value predicted by conservation of angular momentum. At higher energies we find that the polarization falls rapidly. We suggest that this rapid fall is a consequence of a 1s 4d 2 2 S resonance just below the threshold.

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