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- W1992987785 abstract "Equation 13 in this paper defines the force experienced by the electron moving in z direction with velocity v{sub z} due to the X-ray wave propagating in z direction with electric field E{sub 1} pointing in y direction and magnetic field B{sub 1} pointing in x direction as {rvec F}{sub 1}(t) = -eE{sub 1} cos({omega}{sub 1}t - k{sub 1}z){rvec e}{sub y}. In our opinion calculating this force one should also include the impact of the X-ray wave's magnetic field and obtain {rvec F}{sub 1}(t) = -e E{sub 1} = v{sub z}/c B{sub 1} cos({omega}{sub 1}t - k{sub 1}z){rvec e}{sub y} {approx} - eE{sub 1}/2{gamma}{sup 2} cos({omega}{sub 1}t - k{sub 1}z){rvec e}{sub y}. Here c is the speed of light and {gamma} is the electron relativistic factor. In result one would need to change E{sub 1} to E{sub 1}/2{gamma}{sup 2} in all the following equations in the cited paper (except wave propagation equations, Eqs. (23) and (34)). They believe that similar omission in the impact of the magnetic field appears in equation (28). Consequently, the formula for the gaion (Eq. (37) in the cited paper) should also include the factor 1/2{gamma}{sup 2}. This is a rather significant modification considering that relativisticmore » electrons with values of {gamma} ranging from approximately 20 to approximately 300 are used in the numerical examples.« less" @default.
- W1992987785 created "2016-06-24" @default.
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- W1992987785 date "2011-04-15" @default.
- W1992987785 modified "2023-09-27" @default.
- W1992987785 title "Comment on “Proposal for Raman X-ray free electron laser”" @default.
- W1992987785 doi "https://doi.org/10.1140/epjd/e2011-10511-0" @default.
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