Smith-Purcell radiation from surface waves

RREPS13; Meghri13

Mkrtchyan, A.R.^1 ; Grigoryan, L. Sh.^1 ; Saharian, A.A.^1

Institute of Applied Problems in Physics, 25 Nersessian Street, 0014 Yerevan, Armenia^1

关键词: Arbitrary profile;    Density distributions;    Dynamical Casimir effect;    Electron bunch;    Longitudinal direction;    Partially coherent;    Quantum radiation;    Smith-Purcell radiations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/517/1/012021/pdf
DOI  :  10.1088/1742-6596/517/1/012021

来源: IOP

【 摘 要 】

We consider the radiation from an electron in flight over a surface wave of an arbitrary profile excited in a plane interface. For an electron bunch the conditions are specified under which the overall radiation essentially exceeds the incoherent part. In particular, it is shown that the radiation from the bunch with asymmetric density distribution of electrons in the longitudinal direction is partially coherent for waves with wavelengths much shorter than the characteristic longitudinal size of the bunch. The quantum radiation due to the dynamical Casimir effect induced by surface waves excited on a plane boundary is discussed.