A bunch of electrons moving in an active medium excites a wake that is amplified by the medium. The intense radiation field generated in this process reduces the population inversion and, as a result, the field-medium interaction reaches saturation. We show that the accelerating gradient at saturation may reach the 1 GV m level before the medium is ionized. When ionization occurs, higher gradie...

In this paper we compare the Plasma Beat Wave Accelerator and the Plasma Wake Field Accelerator. We show that the electric fields in the plasma for both schemes are very similar, and thus the dynamics of the driven beams are very similar. The differences appear in the parameters associated with the driving beams. In particular to obtain a given accelerating gradient, the Plasma Wake Field Accel...

The massless field perturbations of the accelerating Minkowski and Schwarzschild spacetimes are studied. The results are extended to the propagation of the Proca field in Rindler spacetime. We examine critically the possibility of existence of a general spin-acceleration coupling in complete analogy with the well-known spin-rotation coupling. We argue that such a direct coupling between spin an...

The main objective of this article is to identify and evaluate the accelerating factor in the Iranian oil nationalization movement. The main question is: what was the accelerating factor that put the Iranian oil nationalization movement into practice? The article relies on the reform movement theory of Neil Smelser. For this purpose, fraud in the 16thnational election of the parliament, and est...

The cosmological evolution in Nonlinear Born-Infeld(hereafter NLBI) scalar field theory with negative potentials was investigated. The cosmological solutions in some important evolutive epoches were obtained. The different evolutional behaviors between NLBI and linear(canonical) scalar field theory have been presented. A notable characteristic is that NLBI scalar field behaves as ordinary matte...

Apparatus for the separation and extraction of molecular isotopes. Molecules of one and the same isotope are preferentially photo-dissociated by a laser and an ultraviolet source, or by multi-photon absorption of laser radiation. The resultant ions are confined with a magnetic field, moved in opposite directions by an electric field, extracted from the photo-dissociation region by means of scre...

The magnetic induction creates a negative electric field, causing an electromagnetic inertia responsible for the relativistic mass change; it is the mysterious Higgs Field giving mass to the particles. The accelerating electrons explain not only the Maxwell Equations and the Special Relativity, but the Heisenberg Uncertainty Relation, the Wave-Particle Duality and the electron’s spin also, buil...

Distance measurements to Type 1a supernovae (SNe1a) indicate that the Universe is accelerating and that two-thirds of the critical energy density exists in a component with negative pressure. If that component is an evolving scalar field (‘quintessence’), accurate (5% or so) distance measurements to SNe1a can be used to reconstruct the scalar-field potential. We derive the reconstruction equati...

Recent many physicists suggest that the dark energy in the universe might result from the Born-Infeld(B-I) type scalar field of string theory. The universe of B-I type scalar field with potential can undergo a phase of accelerating expansion. The corresponding equation of state parameter lies in the range of −1 < ω < − 1 3. The equation of state parameter of B-I type scalar field without potent...

Using a mean-field dynamo model with a spherically symmetric helical turbulence parameter alpha which is algebraically quenched and disturbed by additional noise, the basic features of geomagnetic polarity reversals are shown to be generic consequences of the dynamo action in the vicinity of exceptional points of the spectrum. This simple paradigmatic model yields long periods of constant polar...