TY - JOUR
T1 - Coherent short wave radiation from a solid state free electron laser
AU - Bogacz, S. A.
AU - Ketterson, J. B.
AU - Wong, G. K.
N1 - Funding Information:
We would like to acknowledge financial support from NSF Grant DMR 81-07385, the Northwestern Materials Research Center, through NSF Grant DMR 82-16972, and from the US Department of Energy . Stimulating discussions with D.Y. Smith are also acknowledged.
PY - 1986/9/1
Y1 - 1986/9/1
N2 - The idea of using a crystal lattice or a superlattice as an undulator for a free electron laser is explored. A purely classical treatment of relativistic positrons channeling through the proposed structure is performed in a self-consistent fashion involving the wave equation for the radiating electromagnetic field and the kinetic equation for the positron distribution function. The gain coefficient for a forward radiating field is obtained in closed analytical form and is studied numerically for a (110) planar channeling in Si. This result, combined with a feedback mechanism arising from Bragg diffraction within the basic crystal lattice, may lead to an instability of the radiation inside the crystal.
AB - The idea of using a crystal lattice or a superlattice as an undulator for a free electron laser is explored. A purely classical treatment of relativistic positrons channeling through the proposed structure is performed in a self-consistent fashion involving the wave equation for the radiating electromagnetic field and the kinetic equation for the positron distribution function. The gain coefficient for a forward radiating field is obtained in closed analytical form and is studied numerically for a (110) planar channeling in Si. This result, combined with a feedback mechanism arising from Bragg diffraction within the basic crystal lattice, may lead to an instability of the radiation inside the crystal.
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U2 - 10.1016/0168-9002(86)90904-6
DO - 10.1016/0168-9002(86)90904-6
M3 - Article
AN - SCOPUS:33947417532
VL - 250
SP - 328
EP - 336
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1-2
ER -