Catching relativistic electrons

Relativistic Electrons and Coherent Radiation

Giant Terahertz Power Levels from Relativistic Electrons

INTRODUCTION We present measurements of both power and spectral content that confirm theoretical predictions of the generation of 20 watts (average) of broadband THz radiation pulses. The experiments were performed using the energy recovery linac (ERL) at the Jefferson Lab Free Electron Laser (JLab FEL)[1]. This facility offers a combination of very short electron bunches (~ 500 fs), relatively...

Relativistic electrons from sparks in the laboratory

Discharge experiments were carried out at the Eindhoven University of Technology in 2013. The experimental setup was designed to search for electrons produced in meter-scale sparks using a 1 MV Marx generator. Negative voltage was applied to the high voltage (HV) electrode. Five thin (1 mm) plastic detectors (5 cm2 each) were distributed in various configurations close to the spark gap. Earlier...

Pivotal issues on relativistic electrons in ITER

The transfer of the plasma current from thermal to relativistic electrons is a threat to ITER achieving its mission. This danger is significantly greater in the nuclear than in the nonnuclear phase of ITER operations. Two issues are pivotal. The first is the extent and duration of magnetic surface breaking in conjunction with the thermal quenches. The second is the exponential sensitivity of th...

Inertial Instability of Accretion Disks with Relativistic Electrons

We show that accretion disks with relativisticly hot electrons which are coupled to cold ions is subject to inertial-type instability in which kinematic drag between electrons and ions produces radial acceleration of electrons. Subject headings: Accretion Disks Instabilities 1. Model Problem We consider an accretion disk in which electrons are heated to relativistic energies, while ions remain ...