Interactions between galactic cosmic rays and matter are a primary focus of the NASA radiation problem. The electromagnetic forces involved are for the most part well documented. Building on previous research, this study investigated the relative importance of the weak forces that occur when a cosmic ray impinges on di!erent types of materials. For the familiar electromagnetic case, it is known...

This paper treats electromagnetic wave propagation in anisotropic, chiral and pseudochiral 3D structures. The analysis is focused on radiation and leakage behavior and includes a discussion of the effect of the media parameters on the electromagnetic characteristics of these structures.

A Lorentz invariant formalism for quasi-classical description of electromagnetic radiation from a neutral spin / 2 particle with an anomalous magnetic moment moving in an external electromagnetic field is developed. In the high symmetry fields, for which analytical solutions to the Bargmann–Michel–Telegdi equation are known, the so called self-polarization axes, i. e. directions of preferred po...

To address the important issue of how kinetic energy of collimated blast waves is converted into radiation, Pohl & Schlickeiser (2000) have recently investigated the relativistic two-stream instability of electromagnetic turbulence. They have shown that swept-up matter is quickly isotropized in the blast wave, which provides relativistic particles and, as a result, radiation. Here we present ne...

A large 10 cm per day diastrophism of the crust was experienced between Kozu and Niijima Islands during the Izu-Miyake volcanic eruptions in Japan on 3–4 August 2000. The diastrophism was detected through GPS observation. The seismometer also complied a swarm of earthquakes at this time. Our electromagnetic wave data, observed at 223 Hz at the Omaezaki site, about 110 km and 150 km northwest of...

Non-linear behaviors of a single neuron described by Fitzhugh-Nagumo (FHN) neuron model, with external electromagnetic radiation considered, is investigated. It is discovered that with external electromagnetic radiation in form of a cosine function, the mode selection of membrane potential occurs among periodic, quasi-periodic, and chaotic motions as increasing the frequency of external transme...

The field of radiation emission from electron beams is reviewed with special reference to work related to free-electron lasers. Different schemes o f interaction in periodic structures, electromagnetic slow-wave structures, and in transverse confining force are distinguished. Various effects and devices such as traveling wave amplifiers, Smith-Purcell radiators, Cerenkov and bremsstrahlung-free...

The emission of electromagnetic radiation from charged particles spiraling around magnetic fields is an important effect in astrophysical and laboratory plasmas. In theoretical modeling, issues still not fully resolved are, among others, the inclusion of the recoil force on the relativistic electron motion and the detailed computation of the radiation power spectrum. In this paper, the cyclotro...

Terahertz (THz) radiation occupies a very large portion of the electromagnetic spectrum and has generated much recent interest due to its ability to penetrate deep into many organic materials without the damage associated with ionizing radiation such as x-rays. One path for generating copious amount of tunable narrowband THz radiation is based on the Smith-Purcell free-electron laser (SPFEL) ef...

1. Sources of particles 1.1 Particle Accelerators 1.2 Neutron sources 2. Sources of high-energy radiation 2.1 Conventional sources 2.2. Large Bremsstrahlung Sources 2.3. Synchrotron radiation 2.4. Free electron and X-ray lasers 3. Detectors 3.1. Interaction of radiation with matter 3.1.1. Interaction of particles with matter 3.1.2. Interaction of electromagnetic radiation with matter 3.2. Parti...