GOBET, F.; BARBERET, P.; COURTOIS, L.; DEVES, G.; GARDELLE, J.; LEBLANC, S.; PLAWINSKI, L.; SEZNEC, H.

doi:10.1063/5.0036284

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GOBET, F.
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]

BARBERET, P.
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]

COURTOIS, L.
Centre d'études scientifiques et techniques d'Aquitaine (CESTA-CEA) [CESTA]

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Applied Physics Letters. 2021, vol. 118, n° 4, p. 044102

American Institute of Physics

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A compact low-energy and high-intensity x-ray source for radiation biology applications is presented. A laser-induced plasma moves inside a 30 kV diode and produces a beam of 1014 electrons at the anode location. An aluminum foil converts a part of the energy of these electrons into x-ray photons, which are characterized using filtered imaging plates. The dose that would be deposited by these x-ray photons in C. elegans larvae is calculated from Geant4 simulations. It can be set to a value ranging between 10 μGy and 10 mGy per laser shot by simply changing the aluminum foil thickness and the diode voltage. Therefore, this versatile and compact x-ray source opens a new path to explore the radiation effects induced by dose rates varying over several orders of magnitude.< Leer menos

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X-ray photons produced from a plasma-cathode electron beam for radiation biology applications

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