Angular Distribution of Fast Electrons Ejected fromKandLShells by Proton Impact

1970 ◽  
Vol 1 (2) ◽  
pp. 299-304 ◽  
Author(s):  
Byung-Ho Choi ◽  
Eugen Merzbacher
Keyword(s):  
Angular Distribution ◽  
Fast Electrons ◽  
Proton Impact

scholarly journals Simulation of a high-brightness, hard X-ray source based on high-intensity interaction of ultra-short laser pulses with high-Z targets

1997 ◽  
Vol 15 (1) ◽  
pp. 139-143
Author(s):  
V.A. Lykov ◽  
V.E. Chernyakov ◽  
Ya.Z. Kandiev ◽  
I.A. Litvinenko ◽  
V.G. Nikolaev
Keyword(s):  
Angular Distribution ◽  
Numerical Simulations ◽  
Electromagnetic Fields ◽  
High Intensity ◽  
Laser Pulses ◽  
The State ◽  
High Brightness ◽  
Fast Electrons ◽  
X Ray ◽  
Short Laser Pulses

The results of numerical simulations of fast electrons interaction with matter, calculated yield and angular distribution of bremsstrahlung and fluorescence K-α X-ray radiation and generation of electromagnetic fields, carried out by ERA, PM2D, and PRIZMA codes for the state of experiments on interaction of ultra-short laser pulses with high-Z targets at intensity of 1016−1018 W/cm2 are presented. Spherical targets with conical hollows and conical targets of high-Z matter are proposed for experiments with picosecond lasers to increase the brightness of hard X-ray sources.

Nondipole parameters of TDCS for electron impact ionization and drag current

Open Physics ◽  
2011 ◽  
Vol 9 (5) ◽  
Author(s):  
Arkadiy Baltenkov ◽  
Steven Manson ◽  
Alfred Msezane
Keyword(s):  
Angular Distribution ◽  
Impact Ionization ◽  
Dipole Approximation ◽  
Directed Motion ◽  
Knock Out ◽  
Fast Electrons ◽  
Triple Differential Cross Section ◽  
Fast Electron Beam ◽  
Optical Limit ◽  
The One

AbstractA comprehensive study is undertaken of angular distributions of electron knock-out from atomic targets by fast electrons with a small transfer of momentum. The general expressions for the parameters of the triple differential cross-section of impact ionization in the optical limit are derived. The calculated parameters are compared with those of the angular distribution of electrons ejected from an atom in the process of photoionization. In these processes, when the multipole transitions are involved, the one-to-one correspondence between the photoionization and impact ionization parameters disappears. The nondipole transitions lead to the backward/forward asymmetry of the angular distribution of ejected electrons that is absent in the dipole approximation for ionization by both fast electrons and photons. Using the He atom as an example, the character of the asymmetry for these two processes is qualitatively different and the backward/forward asymmetry results in macroscopic directed motion of secondary electrons accompanying the passing of a fast electron beam through gas or plasma. The general formulas for this drag current are derived and applied to gaseous He.

The Scattering of Fast Electrons and Positrons by Heavy Elements

1952 ◽  
Vol 5 (2) ◽  
pp. 258
Author(s):  
EM Gunnersen
Keyword(s):  
Angular Distribution ◽  
Elastic Scattering ◽  
Large Deviations ◽  
Heavy Elements ◽  
Fast Electrons ◽  
Electrons And Positrons

The angular distribution for the single elastic scattering of 1.07 MeV, positrons and electrons by the Hartree field of mercury (Z=80) is calculated. The results show no large deviations from Coulomb values except, possibly, a slight increase in the region of 90� for electrons.

Sign in / Sign up

Export Citation Format

Share Document