The Radiation Energy Loss Of Energetic Electron In Electromagnetic Plasma

In recent years with the rapid development of laser technology, it has attracted scientists attention that hitting a thin gold foil with ultrahigh intensity lasers to produce electromagnetic plasma. Given the extreme existence of electromagnetic plasma conditions of high temperature pressure,we have to adopt various indirect diagnosis to know about the QED plasma.we know there are energy loss when the large transverse movement jet which was produced at ultra-relativistic heavy-ion collision undergoes multiple scattering by exchanging gluons with target partons and emits gluons through bremsstrahlung,and the energy loss of jet is very sensitive to the properties of the targets,so jet quenching is a good diagnose tool to study the properties of quark matter.Inspired by this, we applied the jet quenching concept and methods to QED medium,and calculated the energy loss of energetic electron jet which undergoes multiple scattering by exchanging photons with target electrons.Based on the G-W model of QED,first we apply opacity expanding method to investigate the energy loss of energetic electron jet which undergoes multiple scat-tering by exchanging photons with targets and emission photons,we calculate the contribution of opacity one and second order, it shows that the contribute of high order of opacity is great,and the first order of opacity no longer dominant the energy loss of electron.so we will not apply the method of opacity expanding to investigate the energy loss of electromagnetic plasma which has long scale and large number of collision.After that,we calculate the energy loss again by method of BDMPS,which corresponding to large number of collision.at last,the result is the energy loss of en-ergetic electron at electromagnetic plasma is linear dependent on the medium length L.