Ponderomotive acceleration of hot electrons in tenuous plasmas Export

@article{citeulike:5868630, abstract = {The oscillation-center Hamiltonian is derived for a relativistic electron injected with an arbitrary momentum in a linearly polarized laser pulse propagating in tenuous plasma, assuming that the pulse length is smaller than the plasma wavelength. For hot electrons generated by collisions with ions under an intense laser drive, multiple regimes of ponderomotive acceleration are identified, and the laser dispersion is shown to affect the process at plasma densities down to 1017  cm−3. We consider the regime when the cold plasma is not accelerated, requiring a/g1, where a is the laser parameter, proportional to the field amplitude, and g is the group-velocity Lorentz factor. In this case, the Lorentz factor of hot electrons does not exceed ag after acceleration, assuming its initial value also satisfies 0. Yet \~{} is attained within a wide range of initial conditions; hence, a cutoff in the hot-electron distribution is predicted.}, author = {Geyko, V. I. and Fraiman, G. M. and Dodin, I. Y. and Fisch, N. J.}, citeulike-article-id = {5868630}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLEEE8000080000003036404000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRE/v80/e036404}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevE.80.036404}, day = {15}, doi = {10.1103/PhysRevE.80.036404}, journal = {Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)}, keywords = {acceleration, analytic, electron, hot, laser, model, plasma, ponderomotive, pulse, tenuous, underdense, wavelength}, month = {September}, number = {3}, pages = {036404+}, posted-at = {2009-10-01 16:39:23}, priority = {2}, publisher = {APS}, title = {Ponderomotive acceleration of hot electrons in tenuous plasmas}, url = {http://dx.doi.org/10.1103/PhysRevE.80.036404}, volume = {80}, year = {2009} }

TY - JOUR ID - citeulike:5868630 L3 - citeulike-article-id:5868630 N2 - The oscillation-center Hamiltonian is derived for a relativistic electron injected with an arbitrary momentum in a linearly polarized laser pulse propagating in tenuous plasma, assuming that the pulse length is smaller than the plasma wavelength. For hot electrons generated by collisions with ions under an intense laser drive, multiple regimes of ponderomotive acceleration are identified, and the laser dispersion is shown to affect the process at plasma densities down to 1017  cm−3. We consider the regime when the cold plasma is not accelerated, requiring a/g1, where a is the laser parameter, proportional to the field amplitude, and g is the group-velocity Lorentz factor. In this case, the Lorentz factor of hot electrons does not exceed ag after acceleration, assuming its initial value also satisfies 0. Yet ~ is attained within a wide range of initial conditions; hence, a cutoff in the hot-electron distribution is predicted. IS - 3 JF - Physical Review E (Statistical, Nonlinear, and Soft Matter Physics) TI - Ponderomotive acceleration of hot electrons in tenuous plasmas PB - APS VL - 80 SP - 036404 KW - acceleration KW - analytic KW - electron KW - hot KW - laser KW - model KW - plasma KW - ponderomotive KW - pulse KW - tenuous KW - underdense KW - wavelength AU - Geyko, VI AU - Fraiman, GM AU - Dodin, IY AU - Fisch, NJ PY - 2009/09/15/ UR - http://dx.doi.org/10.1103/PhysRevE.80.036404 ER -