Record Details

Title:
All-optical structuring of laser-driven proton beam profiles
Affiliation(s):
EuXFEL staff, Other
Author group:
Instrument HED
Topic:
Scientific area:
Abstract:
Extreme field gradients intrinsic to relativistic laser-interactions with thin solid targets enable compact MeV proton accelerators with unique bunch characteristics. Yet, direct control of the proton beam profile is usually not possible. Here we present a readily applicable all-optical approach to imprint detailed spatial information from the driving laser pulse onto the proton bunch. In a series of experiments, counter-intuitively, the spatial profile of the energetic proton bunch was found to exhibit identical structures as the fraction of the laser pulse passing around a target of limited size. Such information transfer between the laser pulse and the naturally delayed proton bunch is attributed to the formation of quasi-static electric fields in the beam path by ionization of residual gas. Essentially acting as a programmable memory, these fields provide access to a higher level of proton beam manipulation.
Imprint:
2018
Journal Information:
Nature Communications, 9 (1), 5292 (2018)
Related external records:
Language(s):
English


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 Record created 2019-01-17, last modified 2019-01-30

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