Bremsstrahlung Cross Sections for Al and Au for Incident-Electron Energies of 0.05 and 0.20 MeV

1970 ◽  
Vol 2 (6) ◽  
pp. 2190-2196 ◽  
Author(s):  
D. H. Rester ◽  
N. Edmonson ◽  
Q. Peasley
Keyword(s):  
Cross Sections ◽  
Incident Electron

Pseudopotential calculations of elastic scattering of electrons by helium atoms in the range 0–20 eV

1990 ◽  
Vol 68 (1) ◽  
pp. 104-110 ◽  
Author(s):  
B. Plenkiewicz ◽  
P. Plenkiewicz ◽  
J.-P. Jay-Gerin
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Momentum Transfer ◽  
Cross Sections ◽  
Theoretical Calculations ◽  
Incident Electron ◽  
Elastic Electron ◽  
Scattering System ◽  
Helium Atoms ◽  
Pseudopotential Calculations

Our earlier pseudopotential calculations on electrons colliding with argon and krypton are extended to consider the elastic electron–helium scattering system. In this paper, we present detailed results for phase shifts, differential, total, and momentum-transfer cross sections for this system for incident electron energies in the range from 0 to 20 eV. These agree very well with existing experimental data and with other theoretical calculations.

Angular distributions of the 12C(e,p)e′ reaction at Ee = 200 MeV

1981 ◽  
Vol 59 (2) ◽  
pp. 271-274 ◽  
Author(s):  
G. J. Lolos ◽  
S. Hontzeas ◽  
R. M. Sealock
Keyword(s):  
Electron Energy ◽  
Cross Sections ◽  
Differential Cross ◽  
Proton Energy ◽  
Incident Electron ◽  
Incident Electron Energy ◽  
Angular Distributions ◽  
Differential Cross Sections ◽  
Good Agreement

Double differential cross sections at six angles ranging from 45° to 143° have been measured for the 12C(e,p)e′ reaction. The proton energy ranged from 15.6 to 17.2 MeV at an incident electron energy of 200 MeV. At the backward angles our results are in good agreement with data reported by Vysotskaya and Afanas'ev but for forward angles the results are lower.

The reaction 7Li(e, 3H)4He,e′ between 6 and 15 MeV

1977 ◽  
Vol 55 (3) ◽  
pp. 252-253 ◽  
Author(s):  
M. K. Leung ◽  
J. J. Murphy II ◽  
Y. M. Shin ◽  
D. M. Skopik
Keyword(s):  
Energy Range ◽  
Electron Energy ◽  
Cross Sections ◽  
Electric Dipole ◽  
Incident Electron ◽  
Incident Electron Energy ◽  
Sum Rule

Tritons resulting from the electrodisintegration of 7Li have been measured at 90° for an incident electron energy of 23.8 MeV over an energy range which ensured that only tritons emitted in the two-body channel were detected. The electrodisintegration cross sections were converted to equivalent photodisintegration data and compared to earlier results. Large discrepancies are observed. It is found that the (γ,3H) channel contributes appreciably to the electric dipole sum rule for 7Li.

Computer calculations of slow electrons scattering by sodium atoms

1977 ◽  
Vol 55 (7-8) ◽  
pp. 742-746 ◽  
Author(s):  
T. D. Bui
Keyword(s):  
Cross Sections ◽  
Sodium Atom ◽  
Incident Electron ◽  
Not Given ◽  
Atom Scattering ◽  
Sodium Atoms ◽  
Variational Calculations ◽  
Computer Calculations ◽  
Explicit Formulae ◽  
Slow Electrons

This is an addendum to a previous paper (Bui and Stauffer, to be referred to as I). The explicit formulae which are not given in I for the case of electron–sodium atom scattering are given in this addendum. Tables of all appreciable partial waves with L ≤ 10 are presented for various values of the energy of the incident electron up to 4 eV. Results for the total elastic cross sections are compared with the most recent variational calculations of Sinfailam and Nesbet.

scholarly journals Free-free Transitions of the Hydrogenic Systems Inside A Dense Plasma Irradiated by A Laser Field

2015 ◽  
Vol 2 (1) ◽  
pp. 55-72
Author(s):  
Anand K. Bhatia
Keyword(s):  
Cross Sections ◽  
Laser Field ◽  
Single Photon ◽  
Photon Emission ◽  
Incident Electron ◽  
Soft Photon ◽  
Present Calculation ◽  
Strong Suppression ◽  
Plasma Screening ◽  
Linearly Polarized

In previous papers [Sinha and Bhatia, Phys. Rev. A 83, 063417 (2011), and Bhatia and Sinha, Phys. Rev. A 86, 053421 (2012)] cross sections for the freefree transitions are calculated for a low energy (external) electron hydrogen scattering in the presence of an external homogeneous, monochromatic, and linearly polarized laser field, without and with the presence of plasma screening, respectively. The present calculation is extended to hydrogenic systems with nuclear charge greater than one. The Debye-Hückel approximation is used to investigate the effect of plasma screening. Calculations are carried out in the soft photon limit. The incident electron is considered to be dressed by the laser field non-perturbatively by choosing the Volkov solutions in both the initial and final states. The scattering wave function for the electron is obtained in the exchange approximation. The laserassisted differential and total cross sections are calculated for single photon emission or absorption and no photon-exchange in the soft-photon limit, the laser intensity being much less than the atomic field intensity. The calculations have been carried out for various values of Debye parameter $\mu$, ranging from 0.08 to 0.30. A strong suppression is noted for the laser-assisted singlet and triplet cross sections compared to the field-free situation. The suppression depends on $\mu$, state of the system as well as on the incident electron momentum. This is unlike in the case of the hydrogen atom in the laser field where the suppression was much more for the triplet cross sections compared to the field-free situation.

Calculation of knock-on sputtering cross sections

1988 ◽  
Vol 46 ◽  
pp. 642-643
Author(s):  
Charles R. Bradley
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Nuclear Charge ◽  
Asymptotic Relation ◽  
Atomic Mass ◽  
Incident Electron ◽  
Surface Binding ◽  
Legendre Series ◽  
Exit Surface ◽  
Surface Binding Energy

Electrons in a TEM can be energetic enough to remove atoms from the exit surface of a sample. The probability of a collision imparting enough energy to dislodge an atom from the surface is expressed in terms of a cross-section which depends on the nuclear charge, the atomic mass, surface binding energy, and incident electron kinetic energy. McKinley and Feshbach have given an asymptotic relation for the Mott cross-section which has been widely used in studies of this process. However the expression is accurate only for low Z, and low incident electron energies (see Figure 1). Since modem TEMs often have accelerating voltages up to 300 or 400kV and occasionally over 1MV the assumption of low incident electron energies is not valid and the restriction to low Z is prohibitive.We have developed a program to evaluate numerically the total Mott cross-section. This program uses an algorithm like that described by Doggett and Spencer to evaluate two conditionally convergent Legendre series.

A Comparison of Theoretical and Experimental Cross-Sections for EELS Quantification at 200 kV Incident Electron Energy

2008 ◽  
Vol 14 (S2) ◽  
pp. 1410-1411
Author(s):  
Q Jin ◽  
S Wang
Keyword(s):  
New Mexico ◽  
Electron Energy ◽  
Cross Sections ◽  
Incident Electron ◽  
Incident Electron Energy ◽  
Experimental Cross

Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008

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