Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Method of forming a plasma micro-undulator
 Undulator is a device which produces a high intensity synchrotron radiation having narrow band width by making a relativistic electron beam undulate in an alternating magnetic field. It is possible to form a plasma micro-undulator which is very compact (size <1 cm) and by which a short-wavelength synchrotron radiation (visible to X-ray) can be produced, by illuminating a variable wavelength laser to a vapor atom generated from a high temperature evaporation source, at that time interfering two laser beams having the same wavelength to form an optical interference fringe and adjusting the wavelength of laser beam to the excitation energy of atom and producing a regular plasma-density-ripple corresponding to the light and shade of optical fringe by the multiple-step ionization scheme (resonance ionization). 
Japan Atomic Energy Research Institute
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inventional inventional
Yasuo Yoshihiro Takashi Ryoji Naoyuki Hiroshi
Suzuki Sadamoto Ikehata Nagai Sato Mase