Tracing ultrafast dynamics of strong fields at plasma-vacuum interfaces with longitudinal proton probing

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Title
Tracing ultrafast dynamics of strong fields at plasma-vacuum interfaces with longitudinal proton probing
Author(s)
Abicht, F; Braenzel, J; Priebe, G; Koschitzki, C; Andreev, AA; P. V. Nickles; Sandner, W; Schnurer, M
Publication Date
2014-07
Journal
APPLIED PHYSICS LETTERS, v.105, no.3, pp.34101-1 - 34101-5
Publisher
AMER INST PHYSICS
Abstract
If regions of localized strong fields at plasma-vacuum interfaces are probed longitudinally with laser accelerated proton beams their velocity distribution changes sensitively and very fast. Its measured variations provide indirectly a higher temporal resolution as deduced from deflection geometries which rely on the explicit temporal resolution of the proton beam at the position of the object to probe. With help of reasonable models and comparative measurements changes of proton velocity can trace the field dynamics even at femtosecond time scale. In longitudinal probing, the very low longitudinal emittance together with a broad band kinetic energy distribution of laser accelerated protons is the essential prerequisite of the method. With a combination of energy and one-dimensional spatial resolution, we resolve fast field changes down to 100 fs. The used pump probe setup extends previous schemes and allows discriminating simultaneously between electric and magnetic fields in their temporal evolution. VC 2014 AIP Publishing LLC.
URI
http://pr.ibs.re.kr/handle/8788114/984
DOI
10.1063/1.4891167
ISSN
0003-6951
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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