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Tunable source of intense, narrowband, fully coherent, soft x-rays

A technology of x-ray and electron sources, applied in the field of x-ray sources, can solve problems such as limiting the scope of application

Pending Publication Date: 2021-09-28
TECH UNIV EINDHOVEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, the coherence and average photon flux required for advanced applications are only available on large-scale synchronous facilities and EUV free-electron lasers (FELS), severely limiting the scope of applications

Method used

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  • Tunable source of intense, narrowband, fully coherent, soft x-rays
  • Tunable source of intense, narrowband, fully coherent, soft x-rays
  • Tunable source of intense, narrowband, fully coherent, soft x-rays

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Embodiment Construction

[0028] One embodiment of the present invention includes a device that requires an ultracold electron source (UCES) combined with an electron accelerator and a high power laser in an inverse Compton scattering (ICS) setup. An intense laser beam collides head-on with a counterpropagating beam of electrons extracted from an ultracold electron source traveling at nearly the speed of light. Due to the relativistic Doppler effect, the laser photons reflected from the electrons are converted into (soft) X-ray photons, constituting a narrow (soft) X-ray beam traveling in the same direction as the electrons. The realization of UCES as a source for ICS will lead to unprecedented soft X-ray coherence and brightness. Electron pulses are generated by a two-step photoionization process of an ultracold atomic gas, which enables precise tailoring of the initial electron density distribution in three dimensions. The initial longitudinal density distribution can be tuned by exciting the atoms ...

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Abstract

A device for generating soft x-rays includes an electron source configured to generate an electron beam comprising electron micro- bunches; an electron accelerator configured to accelerate the electron micro-bunches from the electron source; and a laser configured to generate a laser beam (536) colliding with the accelerated electron micro-bunches (534) in a counterpropagating direction to generate the soft x-rays by inverse Compton scattering. The electron source has a magneto-optical trap configured to produce an ultracold atomic gas; two counterpropagating excitation laser beams configured to produce a standing wave for inducing a periodic spatial modulation of the ultracold atomic gas along a beam propagation direction; and an ionization laser configured to induce photo-ionization of the ultracold atomic gas.

Description

technical field [0001] The present invention generally relates to x-ray sources. More specifically, it relates to devices and methods for generating tunable, intense, narrowband, fully coherent, soft X-rays. Background technique [0002] X-ray methods are the most powerful non-destructive tools for analyzing matter. Electromagnetic radiation in the extreme ultraviolet (EUV) or soft X-ray spectral range (1–100 nm wavelength or 0.01–1 keV photon energy) is rapidly becoming important in fundamental research and industrial applications. [0003] However, successful application depends critically on the brightness of the available sources. Currently, the coherence and average photon flux required for advanced applications are only available on large-scale synchronous devices and EUV free-electron lasers (FELS), severely limiting the scope of applications. Contents of the invention [0004] In one aspect, the present invention provides a compact, lab-sized, and affordable sof...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05G2/00
CPCH05G2/00H05G2/008H05G2/006H05H7/02H05H2007/025
Inventor O·J·卢伊坦J·G·H·弗兰森
Owner TECH UNIV EINDHOVEN