Abstract: In the present invention, a ferroelectric body is irradiated with ultraviolet light, and the ferroelectric body is caused to stably generate electric potential. A method for radiating charged particles, in which the UV-light-receiving surface of the ferroelectric body that receives UV light and is caused to generate a potential difference is irradiated with UV light having a wavelength not transmitted by the ferroelectric body, and charged particles are radiated from the charged-particle-radiation surface of the ferroelectric body, wherein the UV-light-receiving surface is irradiated with pulses of UV light at a peak power of 1 MW or greater. The pulse width of the UV light is measured in picoseconds (less than 1×10?9 seconds), and the UV pulses can be transmitted by fiber.

Abstract: In an X-ray generator using an ultraviolet laser, the generation of the X-ray is stabilized. In an X-ray generation method for irradiating an ultraviolet laser beam emitted from an ultraviolet laser beam generator on an ultraviolet laser beam receiving surface of an electron beam emitting device, irradiating an electron beam emitted from an electron beam emitting surface of the electron beam emitting device distinguished from the ultraviolet laser beam receiving surface on a metal piece and generating an X-ray from the metal piece, denaturalization of substance of the ultraviolet laser beam receiving surface is prevented by controlling the ultraviolet laser beam.

Abstract: Disclosed is an X-ray generator (1) comprised of an electron emission element (10) which receives energy to emit electrons; a metal piece (20) which receives the electrons emitted from the electron emission element (10) to emit an X-ray; and energy supply portions (3, 5) which supply energy to the electron emission element (10), wherein the energy supply portions (3, 5) irradiate a pyroelectric element functioning as an electron emission element with, for example, ultraviolet pulsed light, and a high-energy local portion is formed in the pyroelectric element. Thus, the X-ray generator wherein the size thereof can be reduced, and an on/off control for the generation of X-ray can be easily performed, can be provided.

Abstract: In an X-ray generator using an ultraviolet laser, the generation of the X-ray is stabilized. In an X-ray generation method for irradiating an ultraviolet laser beam emitted from an ultraviolet laser beam generator on an ultraviolet laser beam receiving surface of an electron beam emitting device, irradiating an electron beam emitted from an electron beam emitting surface of the electron beam emitting device distinguished from the ultraviolet laser beam receiving surface on a metal piece and generating an X-ray from the metal piece, denaturalization of substance of the ultraviolet laser beam receiving surface is prevented by controlling the ultraviolet laser beam.