Tunneling Ionization Bunch Length Monitor for the Ultrarelativistic Compressed Electron Beams
نویسنده
چکیده
The electric field intensity of the compressed ultrarelativistic electron beams is approaching GV/m levels, which is sufficient to cause observable tunneling effect in the low band gap materials. In this article the tunneling ionization rate is estimated for the experimentally available electron beam parameters, and a proposed proof of principle experiment is outlined. Tunneling effect has exponential dependence on the electric field strength; thus being very sensitive to the electron beam peak current. This non-linear dependence opens up a possibility to construct inexpensive, single shot and non-destructive peak current diagnostics for the ultrarelativistic compressed electron beams.
منابع مشابه
Collective Ionization by Attosecond Electron Bunches
The formalism of the stopping power for cluster beams was adapted to the stopping power for short electron bunches by using the wake field of a medium characterized by a plasma frequency. It was shown that an electron bunch with the length of the order of attoseconds collectively loses its energy to excite a high-energy density state in the target. The dynamics of intricate molecular and atomic...
متن کاملFemtosecond Single- Bunch Electron Linear Accelerator Based on a Photocathode Rf Gun
A femtosecond single-bunch electron linear accelerator based on a photocathode rf gun was developed in Osaka University for the study of radiation-induced ultrafast physical and chemical reactions. A 32 MeV single electron bunch with bunch length of 98 fs in rms was generated successfully with a magnet bunch compressor, and was used as pump source to study the electroninduced ultrafast reaction...
متن کاملA Beam Size Monitor Based on Appearance Intensities for Multiple Gas Ionization
A method of measuring the spot size or bunch length of intense charged particle beams is proposed. The relation between the size (widths and length) of a charged particle beam and the beam's electric field forms the basis for a submicron beam size monitor. When the beam passes through a low pressure gas of high Z atoms, the collective field of the beam causes multiple ionizations of the gas ato...
متن کاملCavity Loss Factors for Non-ultrarelativistic Beams
Cavity loss factors can be easily computed for ultrarelativistic beams using time-domain codes like MAFIA or ABCI. However, for non-ultrarelativistic beams the problem is more complicated because of difficulties with its numerical formulation in the time domain. We calculate the loss factors of a non-ultrarelativistic bunch and compare results with the relativistic case.
متن کاملDevelopment of Double-decker Electron Beam Accelerator for Femto/attosecond Pulse Radiolysis
A concept of double-decker electron beams, which have vertically different positions and time delay, was proposed for study of ultra-fast electron-induced reactions or phenomena by pulse radiolysis technique. One of the double-decker electron beams is used as a pump source, and another is converted to Cherenkov light and used as a probe light source. The double-decker electron beams were genera...
متن کامل