Synchrotron radiation(SR)sources are immensely useful tools for scientific researches and many practical applications.Currently,the state-of-the-art synchrotrons rely on conventional accelerators,where electrons are a...Synchrotron radiation(SR)sources are immensely useful tools for scientific researches and many practical applications.Currently,the state-of-the-art synchrotrons rely on conventional accelerators,where electrons are accelerated in a straight line and radiate in bending magnets or other insertion devices.However,these facilities are usually large and costly.Here,we study a compact all optical synchrotron-like radiation source based on laser-plasma acceleration either in a straight or a curved plasma channel.With the laser pulse off-axially injected,its centroid oscillates transversely in the plasma channel.This results in a wiggler motion of the whole accelerating structure and the self-trapped electrons behind the laser pulse,leading to strong synchrotron-like radiations with tunable spectra.It is further shown that a palmtop ring-shaped synchrotron is possible with current high power laser technologies.With its potential of high flexibility and tunability,such light sources once realized would find applications in wide areas and make up the shortage of large SR facilities.展开更多
基金supported in part by the National Basic Research Program of China(Grant No 2013CBA01504)Major State Basic Research Development Program of China(2015CB859700)+2 种基金the National Science Foundation of China(Grant Nos.11421064,11374209,11374210)supports from National 1000 Young Talent Programthe support of the University of Strathclyde and helpful comments from Prof。
文摘Synchrotron radiation(SR)sources are immensely useful tools for scientific researches and many practical applications.Currently,the state-of-the-art synchrotrons rely on conventional accelerators,where electrons are accelerated in a straight line and radiate in bending magnets or other insertion devices.However,these facilities are usually large and costly.Here,we study a compact all optical synchrotron-like radiation source based on laser-plasma acceleration either in a straight or a curved plasma channel.With the laser pulse off-axially injected,its centroid oscillates transversely in the plasma channel.This results in a wiggler motion of the whole accelerating structure and the self-trapped electrons behind the laser pulse,leading to strong synchrotron-like radiations with tunable spectra.It is further shown that a palmtop ring-shaped synchrotron is possible with current high power laser technologies.With its potential of high flexibility and tunability,such light sources once realized would find applications in wide areas and make up the shortage of large SR facilities.
