High-resolution gamma-ray radiography produced by a laser-plasma driven electron source.
An electron beam from a laser-plasma accelerator is converted into a gamma-ray source using bremsstrahlung radiation in a dense material. The gamma-ray beam has a pointlike source size because it is generated by a high quality electron beam with a small source size and a low divergence. Using this gamma-ray source, the radiography of complex and dense objects with submillimeter resolution is performed. It is the first evidence of a gamma-ray source size of a few hundreds micrometers produced with laser-driven accelerators. This size is consistent with results from Monte Carlo simulations.
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Laboratoire d'Optique Appliquée-ENSTA, UMR 7639, CNRS, Ecole Polytechnique, 91761 Palaiseau, France.
Faure
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Dain
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Darbon
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Hosokai
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Santos
J J
JJ
Lefebvre
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E
Rousseau
J P
JP
Burgy
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Mercier
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B
Malka
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