The intensity dependence of the free-free transition in a bichromatic laser field

2002 ◽  
Vol 80 (9) ◽  
pp. 969-977 ◽  
Author(s):  
Sh T Zhang ◽  
J Chen ◽  
L Shu-min
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Laser Field ◽  
Incident Electron ◽  
Intensity Dependence ◽  
Total Differential ◽  
Section Versus ◽  
Free Transition ◽  
Direction Of Polarization

In this paper, we investigate the intensity dependence of a free–free transition in the presence of a bichromatic laser field. Based on the first Born approximation, we calculate the differential cross section and total differential cross section versus the field intensity. This dependence relates to the momentum of the incident electron, the ratio of the two frequencies, and the phase difference between the two components of the bichromatic laser field. While the two intensity components are comparable, this dependence is the most striking. The results also show that the intensity dependence relates to the geometrical configurations between the direction of polarization of the laser fields and the incident electron. PACS Nos.: 34.80Bm, 32.80Qk

Anisotropie Interaction Potentials for He-Pyrrole, He-Furane and He-Thiophene from total Differential Cross Section Measurements

1997 ◽  
Vol 52 (4) ◽  
pp. 317-322
Author(s):  
Ralf Schmidt ◽  
Christian Gebauer ◽  
Olaf Klein ◽  
Wolfhart Seidel
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Atomic Beam ◽  
Infinite Order ◽  
Intermolecular Potentials ◽  
Interaction Potentials ◽  
Total Differential ◽  
Crossed Beams ◽  
Sudden Approximation

Abstract Differential cross section measurements are reported for scattering of an improved He-atomic beam by crossed beams of Pyrrole, Furane and Thiophene. The damping of the DCS diffraction oscillations is used to extract reliable anisotropic intermolecular potentials, applying the infinite order sudden approximation (IOSA).

scholarly journals Nonlinear effects in the laser-assisted scattering of a positron by a muon

2018 ◽  
Vol 32 (05) ◽  
pp. 1850058
Author(s):  
Wen-Yuan Du ◽  
Bing-Hong Wang ◽  
Shu-Min Li
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Photon Emission ◽  
Nonlinear Effects ◽  
Potential Scattering ◽  
Photon Absorption ◽  
Nonlinear Phenomena ◽  
Total Differential ◽  
Linearly Polarized

The scattering of a positron by a muon in the presence of a linearly polarized laser field is investigated in the first Born approximation. The theoretical results reveal: (1) At large scattering angle, an amount of multiphoton processes take place in the course of scattering. The photon emission processes predominate the photon absorption ones. (2) Some nonlinear phenomena about oscillations, dark angular windows, and asymmetry can be observed in angular distributions. We analyze the cause giving rise to dark windows and geometric asymmetry initially noted in the potential scattering. (3) We also analyze the total differential cross-section, the result shows that the larger the incident energy is, the smaller the total differential cross-section is. The reasons of these new results are analyzed.

scholarly journals Mott scattering in strong laser fields revisited

2009 ◽  
Vol 87 (4) ◽  
pp. 299-310
Author(s):  
B. Manaut ◽  
Y. Attaourti ◽  
S. Taj ◽  
S. Elhandi
Keyword(s):  
Differential Cross Section ◽  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Cross Section ◽  
Differential Cross ◽  
Laser Field ◽  
Bessel Functions ◽  
Strong Laser ◽  
Mott Scattering

In this work, we review and correct the first Born differential cross section for the process of Mott scattering of a Dirac–Volkov electron, namely, expression (26) derived by Szymanowski et al. (Phys. Rev. A, 56, 3846 (1997)). In particular, we disagree with the expression of (dσ/dΩ) that they obtained and we give the exact coefficients multiplying the various Bessel functions appearing in the scattering differential cross section. Comparison of our numerical calculations with those of Szymanowski et al. shows qualitative and quantitative differences when the incoming total electron energy and the electric-field strength are increased particularly in the direction of the laser propagation. Such corrections are very important since the relativistic electronic dressing of any Dirac–Volkov charged particle gives rise to these coefficients that multiply the various Bessel functions, and the relativistic study of other processes (such as excitation, ionization, etc….) depends strongly upon the correctness and reliability of the calculations for this process of Mott scattering in the presence of a laser field. Our work has been accepted, Attaourti and Manaut (Phys. Rev. A, 68, 067401 (2003)) but only as a comment. In this paper, we give full details of the calculations as well as a clear explanation of the large discrepancies that their results could cause when working in the ultra relativistic regime and using a very strong laser field corresponding to an electric field strength ε = 5.89 au.

The Reaction e-+p→ νe+n at Intermediate Energies

1997 ◽  
Vol 06 (01) ◽  
pp. 111-119 ◽  
Author(s):  
S. L. Mintz ◽  
M. A. Barnett ◽  
G. M. Gerstner ◽  
M. Pourkaviani
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Electron Scattering ◽  
Differential Cross ◽  
Form Factors ◽  
Incident Electron ◽  
Scattering Process ◽  
Intermediate Energies ◽  
Weak Electron

We obtain the differential cross section for the reaction, e-+p→ νe+n, a weak electron scattering process, for incident electron energies from 0.1 GeV to 6.0 GeV. The contributions from the form factors are obtained and the possibility of observing this reaction at accelerators such as CEBAF is discussed. The results for this process are compared to those for the reaction e-+3 He → νe+3 H

Total Differential Cross Section for Scattering of Protons by Helium and Argon

1973 ◽  
Vol 7 (4) ◽  
pp. 1261-1268 ◽  
Author(s):  
D. H. Crandall ◽  
R. H. McKnight ◽  
D. H. Jaecks
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Total Differential
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