منابع مشابه
Ultrarelativistic Electron-Positron Plasma
Ultrarelativistic electron-positron plasmas can be produced in high-intensity laser fields and play a role in various astrophysical situations. Their properties can be calculated using QED at finite temperature. Here we will use perturbative QED at finite temperature for calculating various important properties, such as the equation of state, dispersion relations of collective plasma modes of p...
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We use a boost-invariant one-dimensional (cylindrically symmetric) fluid dynamics code to calculate e+e− production from ρ0 and ω decay in the central rapidity region of a central S+Au collision at √ s = 20 GeV/nucleon. We use equations of state with a first-order phase transition between a massless pion gas and quark gluon plasma, with transition temperatures in the range 150−200 MeV. The prod...
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An intense, high-energy electron or positron beam can have focused intensities rivaling those of today’s most powerful laser beams. For example, the 5 ps ~full-width, half-maximum!, 50 GeV beam at the Stanford Linear Accelerator Center ~SLAC! at 1 kA and focused to a 3 micron rms spot size gives intensities of .10 W/cm at a repetition rate of .10 Hz. Unlike a ps or fs laser pulse which interact...
متن کاملIonization-induced electron trapping in ultrarelativistic plasma wakes.
The onset of trapping of electrons born inside a highly relativistic, 3D beam-driven plasma wake is investigated. Trapping occurs in the transition regions of a Li plasma confined by He gas. Li plasma electrons support the wake, and higher ionization potential He atoms are ionized as the beam is focused by Li ions and can be trapped. As the wake amplitude is increased, the onset of trapping is ...
متن کاملLinear and Nonlinear Dust Acoustic Waves in Quantum Dusty Electron-Positron-Ion Plasma
The behavior of linear and nonlinear dust acoustic waves (DAWs) in an unmagnetized plasma including inertialess electrons and positrons, ions, and mobile positive/negative dust grains are studied. Reductive perturbation method is employed for small and finite amplitude DAWs. To investigate the solitary waves, the Korteweg–de Vries (KdV) equation is derived and the solution is presented. B...
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ژورنال
عنوان ژورنال: The European Physical Journal D
سال: 2009
ISSN: 1434-6060,1434-6079
DOI: 10.1140/epjd/e2009-00077-9