scholarly journals EP-1771 Measuring the influence of magnetic fields on the dose distributions of clinical electron beams

2019 ◽  
Vol 133 ◽  
pp. S957
Author(s):  
R. Kueng ◽  
B.M. Oborn ◽  
N. Roberts ◽  
T. Causer ◽  
M.F.M. Stampanoni ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Electron Beams ◽  
Dose Distributions

scholarly journals Dynamics of an orbital polarization of twisted electron beams in electric and magnetic fields

2019 ◽  
Vol 204 ◽  
pp. 10008
Author(s):  
Alexander J. Silenko ◽  
Pengming Zhang ◽  
Liping Zou
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Magnetic Fields ◽  
Quantum Dynamics ◽  
Electron Beams ◽  
Equations Of Motion ◽  
Vortex Beam ◽  
Dirac Particles ◽  
Electric And Magnetic Fields ◽  
Average Projection

Relativistic classical and quantum dynamics of twisted (vortex) Dirac particles in arbitrary electric and magnetic fields is constructed. The relativistic Hamiltonian and equations of motion in the Foldy-Wouthuysen representation are derived. Methods for the extraction of an electron vortex beam with a given orbital polarization and for the manipulation of such a beam are developed. The new effect of a radiative orbital polarization of a twisted electron beam in a magnetic field resulting in a nonzero average projection of the intrinsic orbital angular momentum on the field direction is predicted.

Measurement of dose distributions using film in therapeutic electron beams

1990 ◽  
Vol 15 (4) ◽  
pp. 240
Author(s):  
Almon S. Shiu ◽  
Victor A. Otte ◽  
Kenneth R. Hogstrom
Keyword(s):  
Electron Beams ◽  
Dose Distributions

Stability analysis of sheared non-neutral relativistic cylindrical electron beams in applied magnetic fields

1991 ◽  
Vol 45 (2) ◽  
pp. 191-201 ◽  
Author(s):  
D. Zoler ◽  
S. Cuperman
Keyword(s):  
Stability Analysis ◽  
Magnetic Fields ◽  
Maxwell Equations ◽  
Electron Beams ◽  
Radial Electric Field ◽  
The Self ◽  
Axial Motion ◽  
Axial Velocity Component ◽  
Self Consistent ◽  
Consistent Treatment

A self-consistent stability analysis of relativistic non-neutral cylindrical electron flows propagating along applied magnetic fields is considered within the framework of the macroscopic cold-fluid-Maxwell equations. The full influence of the equilibrium self-electric and self-magnetic fields is retained. Then the E x B drift (E being the radial electric field created by the uncompensated charge) generates a radial shear, vz(r) and v0(r). The effect of the shear in the axial velocity component, as reflected in the relative axial motion of adjacent concentric layers of beam particles, is investigated. The self-consistent treatment of the problem thus shows that the equilibrium state considered in this paper is unstable.

Magnetic fields in the vicinity of pulsed electron beams in space

1988 ◽  
Vol 36 (5) ◽  
pp. 469-470 ◽  
Author(s):  
T. Neubert ◽  
K.J. Harker
Keyword(s):  
Magnetic Fields ◽  
Electron Beams
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