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

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.
Authors:
; ; ;  [1] ;  [2] ;  [1] ;  [3] ;  [3] ;  [1] ;  [4] ;  [1] ;  [5] ;  [5]
  1. Max-Born-Institut, Max-Born-Str. 2a, 12489 Berlin (Germany)
  2. XFEL GmbH, Notkestr. 85, 22607 Hamburg (Germany)
  3. (Russian Federation)
  4. (Korea, Republic of)
  5. (Germany)
Publication Date:
OSTI Identifier:
22311175
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DISTRIBUTION; EVOLUTION; INTERFACES; LASER RADIATION; MAGNETIC FIELDS; ONE-DIMENSIONAL CALCULATIONS; OPTICAL PUMPING; PLASMA; PROTON BEAMS; PROTON PROBES; SPATIAL RESOLUTION