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Title: Ultralow-dose, feedback imaging with laser-Compton X-ray and laser-Compton gamma ray sources

Ultralow-dose, x-ray or gamma-ray imaging is based on fast, electronic control of the output of a laser-Compton x-ray or gamma-ray source (LCXS or LCGS). X-ray or gamma-ray shadowgraphs are constructed one (or a few) pixel(s) at a time by monitoring the LCXS or LCGS beam energy required at each pixel of the object to achieve a threshold level of detectability at the detector. An example provides that once the threshold for detection is reached, an electronic or optical signal is sent to the LCXS/LCGS that enables a fast optical switch that diverts, either in space or time the laser pulses used to create Compton photons. In this way, one prevents the object from being exposed to any further Compton x-rays or gamma-rays until either the laser-Compton beam or the object are moved so that a new pixel location may be illumination.
Inventors:
Issue Date:
OSTI Identifier:
1453045
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
Patent Number(s):
9,983,151
Application Number:
15/320,047
Contract Number:
AC52-07NA27344
Resource Relation:
Patent File Date: 2015 May 07
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Works referenced in this record:

Source of Femtosecond Laser Pulses
patent-application, January 2011

Inverse compton scattering gamma ray source
journal, September 2009
  • Boucher, S.; Frigola, P.; Murokh, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 608, Issue 1, p. S54-S56
  • DOI: 10.1016/j.nima.2009.05.035

High-Power Picosecond Pulse Recirculation for Inverse Compton Scattering
journal, November 2008