TY - JOUR
T1 - Experimental results of nonrelativistic electron beam trapping and energy transfer in a compton scattering free electron laser scheme
AU - Olshan, R. Z.
AU - Gover, A.
AU - Ruschin, S.
AU - Kleinman, H.
AU - Friedman, A.
AU - Steinberg, B.
AU - Katz, I.
N1 - Funding Information:
Initial funding for this research was supported by a USAF grant No . AFOSR 82-0239 . Support was also given from the Kranzberg Institute. We would like to express our appreciation to A. Eichenbaum, B . Cohen and P. Yogev for their assistance.
PY - 1986/9/1
Y1 - 1986/9/1
N2 - We report the first observation of electron trapping and the energy transfer effect induced by two counter-propagating laser beams. The beam sources were two CO2 transversely excited lasers, operating at 9.3 μm, and 10.6 μm, respectively, generating a ponderomotive potential with a short period (about 5 μm). The electron beam had an energy of 1-1.3 keV, corresponding to a velocity in resonance with the ponderomotive potential created by the laser beams. A decelerating axial electric field of 62 V/m was applied in the interaction region. Trapped or quasi-trapped electrons were not fully decelerated by the axial field, allowing energy differentiation between these and the untrapped electrons. Trapping efficiencies of up to 25% were measured, and the laser-induced increase in energy (nondeceleration) ranged between 0 and 5 eV. The measured laser to electron energy transfer resonance curve may be explained by either multimode quasi-trapping or by the phase displacement energy transfer and energy spread processes.
AB - We report the first observation of electron trapping and the energy transfer effect induced by two counter-propagating laser beams. The beam sources were two CO2 transversely excited lasers, operating at 9.3 μm, and 10.6 μm, respectively, generating a ponderomotive potential with a short period (about 5 μm). The electron beam had an energy of 1-1.3 keV, corresponding to a velocity in resonance with the ponderomotive potential created by the laser beams. A decelerating axial electric field of 62 V/m was applied in the interaction region. Trapped or quasi-trapped electrons were not fully decelerated by the axial field, allowing energy differentiation between these and the untrapped electrons. Trapping efficiencies of up to 25% were measured, and the laser-induced increase in energy (nondeceleration) ranged between 0 and 5 eV. The measured laser to electron energy transfer resonance curve may be explained by either multimode quasi-trapping or by the phase displacement energy transfer and energy spread processes.
UR - http://www.scopus.com/inward/record.url?scp=46149128152&partnerID=8YFLogxK
U2 - 10.1016/0168-9002(86)90888-0
DO - 10.1016/0168-9002(86)90888-0
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:46149128152
SN - 0168-9002
VL - 250
SP - 244
EP - 253
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
IS - 1-2
ER -