Historical remarks on the «classical» electron radius

1981 ◽  
Vol 31 (4) ◽  
pp. 131-134 ◽  
Author(s):  
L. Belloni
Keyword(s):  
Classical Electron ◽  
Historical Remarks ◽  
Electron Radius ◽  
Classical Electron Radius

A Covariant Semi-Classical Theory of the Radiating Electron

1977 ◽  
Vol 32 (1) ◽  
pp. 101-102
Author(s):  
M. Sorg
Keyword(s):  
Classical Theory ◽  
Characteristic Length ◽  
Order Approximation ◽  
Classical Equation ◽  
Radiation Reaction ◽  
Equation Of Motion ◽  
Compton Wavelength ◽  
Classical Electron ◽  
Electron Radius ◽  
Classical Electron Radius

Abstract A new semi-classical equation of motion is suggested for the radiating electron. The characteristic length of the new theory is the Compton wavelength λc(= ħ/2 m c) instead of the classical electron radius which is used in all purely classical theories of the radiating electron. However, the lowest order approximation of the radiation reaction contains only the classical radius rc.

scholarly journals The Abraham–Lorentz force and electrodynamics at the classical electron radius

2019 ◽  
Vol 34 (15) ◽  
pp. 1950077 ◽  
Author(s):  
Janos Polonyi
Keyword(s):  
Lorentz Force ◽  
Radiation Reaction ◽  
Classical Electron ◽  
Satisfactory Description ◽  
Point Splitting ◽  
Reaction Forces ◽  
Electron Radius ◽  
Classical Language ◽  
Classical Electron Radius ◽  
Classical Radiation

The Abraham–Lorentz force is a finite remnant of the UV singular structure of the self-interaction of a point charge with its own field. The satisfactory description of such an interaction needs a relativistic regulator. This turns out to be a problematic point because the energy of regulated relativistic cutoff theories is unbounded from below. However, one can construct point-splitting regulators which keep the Abraham–Lorentz force stable. The classical language can be reconciled with QED by pointing out that the effective quantum theory for the electric charge supports a saddle point producing the classical radiation reaction forces.

Interacting charges and the classical electron radius

2018 ◽  
Vol 39 (2) ◽  
pp. 025706
Author(s):  
Roberto De Luca ◽  
Marco Di Mauro ◽  
Orazio Faella ◽  
Adele Naddeo
Keyword(s):  
Classical Electron ◽  
Electron Radius ◽  
Classical Electron Radius

scholarly journals Few-Cycle Infrared Pulse Evolving in FEL Oscillators and Its Application to High-Harmonic Generation for Attosecond Ultraviolet and X-ray Pulses

Atoms ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 15
Author(s):  
Ryoichi Hajima
Keyword(s):  
Harmonic Generation ◽  
Short Pulse ◽  
High Harmonic ◽  
High Harmonic Generation ◽  
Pulse Generation ◽  
Solid State Lasers ◽  
Linear Accelerators ◽  
X Ray ◽  
Ultrafast Science ◽  
Historical Remarks

Generation of few-cycle optical pulses in free-electron laser (FEL) oscillators has been experimentally demonstrated in FEL facilities based on normal-conducting and superconducting linear accelerators. Analytical and numerical studies have revealed that the few-cycle FEL lasing can be explained in the frame of superradiance, cooperative emission from self-bunched systems. In the present paper, we review historical remarks of superradiance FEL experiments in short-pulse FEL oscillators with emphasis on the few-cycle pulse generation and discuss the application of the few-cycle FEL pulses to the scheme of FEL-HHG, utilization of infrared FEL pulses to drive high-harmonic generation (HHG) from gas and solid targets. The FEL-HHG enables one to explore ultrafast science with attosecond ultraviolet and X-ray pulses with a MHz repetition rate, which is difficult with HHG driven by solid-state lasers. A research program has been launched to develop technologies for the FEL-HHG and to conduct a proof-of-concept experiment of FEL-HHG.

scholarly journals Theory of Effective Stress in Soil and Rock and Implications for Fracturing Processes: A Review

Geosciences ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 119
Author(s):  
Vincenzo Guerriero ◽  
Stefano Mazzoli
Keyword(s):  
Porous Media ◽  
Effective Stress ◽  
Biological Tissues ◽  
Theory Of Elasticity ◽  
Past Century ◽  
Metal Powders ◽  
Science Community ◽  
Experimental Approaches ◽  
Historical Remarks ◽  
Open Issues

The effective stress principle (ESP) plays a basic role in geology and engineering problems as it is involved in fundamental issues concerning strain and failure of rock and soil, as well as of other porous materials such as concrete, metal powders, biological tissues, etc. Although since its introduction in the 1920s the main ESP aspects have been unravelled and theoretically derived, these do not appear to have been always entirely perceived by many in the science community dealing with ESP-related topics but having little familiarity with the complex theories of porous media and poroelasticity. The purpose of this review is to provide a guidance for the reader who needs an updated overview of the different theoretical and experimental approaches to the ESP and related topics over the past century, with particular reference to geological fracturing processes. We begin by illustrating, after some introductive historical remarks, the basic theory underlying the ESP, based on theory of elasticity methods. Then the different ESP-related theories and experimental results, as well as main interpretations of rock jointing and fracturing phenomena, are discussed. Two main classical works are then revisited, and a rigorous ESP proof is derived. Such a proof is aimed at geologists, engineers and geophysicists to become more familiar with theories of porous media and poroelasticity, being based on the classical theory of elasticity. The final part of this review illustrates some still open issues about faulting and hydraulic fracturing in rocks.

Trajectory and Mass Shift of a Classical Electron in a Radiation Pulse

1968 ◽  
Vol 176 (5) ◽  
pp. 1570-1573 ◽  
Author(s):  
Joseph H. Eberly ◽  
Arthur Sleeper
Keyword(s):  
Radiation Pulse ◽  
Mass Shift ◽  
Classical Electron
Sign in / Sign up

Export Citation Format

Share Document