Interference between Compton scattering and x-ray parametric down-conversion.
Parametric down-conversion of x rays into extreme ultraviolet and accompanying nonlinear x-ray diffraction were investigated both theoretically and experimentally. The theory predicted a rocking curve having a Lorentzian signal peak; however, the experiments revealed a peak followed by an unexpected dip. Together with the scattering angle dependence of the signal, the experimental results implied a possibility of interference between the Compton scattering and the parametric down-conversion. The similarity to the Fano effect is discussed.
RIKEN SPring-8 Center, 1-1-1 Koto, Sayo-gun, Hyogo 679-5148 Japan. tamasaku@spring8.or.jp
Kenji
K
Tamasaku
Tetsuya
T
Ishikawa