Title :
Novel radiator for generation of coherent X-rays by relativistic electrons
Author :
Kaplin, V.V. ; Kuznetsov, S.I. ; Timchenko, N.A. ; Uglov, S.R. ; Zabaev, V.N.
Author_Institution :
Nucl. Phys. Inst., Tomsk, Russia
Abstract :
An experiment with a novel type of a periodic crystalline target for generation of coherent X-rays by relativistic electrons is described. The target has been etched on the surface of a GaAs crystal plate by means of microlithography. The etched microstructure is a system of about 300 stripes 14 μm thick, 100 μm high and the gaps between the stripes are 29 μm. The measured spectra and orientation dependence of the X-rays emitted at an angle of 19° to the 500 MeV electron beam of the Tomsk synchrotron are discussed. The generated 27 keV radiation consists of parametric X-ray radiation (PXR) and diffracted X-ray transition radiation (DTR). It has been shown that the intensity of the DTR component of generated X-rays is much greater than that of the PXR
Keywords :
X-ray production; periodic structures; relativistic electron beams; transition radiation; 27 keV; 500 MeV; GaAs; X-ray emission spectra; coherent X-rays generation; diffracted X-ray transition radiation; microlithography; orientational dependence; parametric X-ray radiation; periodic crystalline target; plasma etched microstructure; relativistic electrons; synchrotron electron beam; Crystal microstructure; Crystallization; Electron beams; Electron emission; Etching; Gallium arsenide; Photonic crystals; Strips; Synchrotrons; X-ray diffraction;
Conference_Titel :
Science and Technology, 1999. KORUS '99. Proceedings. The Third Russian-Korean International Symposium on
Conference_Location :
Novosibirsk
Print_ISBN :
0-7803-5729-9
DOI :
10.1109/KORUS.1999.876222
