Abstract
The energy sensitive detection of the signal is highly important for temporally resolved images. The proton beam usually has a broad and continuous energy distribution—but the energetic protons are all accelerated within 1–2 ps [5, 11–14]. Starting at nearly the same time from the target, they reach the interaction target at different times. Fast (higher energetic) protons reach the object to probe earlier than slower (less energetic) protons. Hence, every exposed layer contains information of different times. The film stacks allow series of temporal snapshots, whereas the number of the exposed layers depends on the maximum energy of the proton beam. With proton energies up to 2–4 MeV, as in the present experiments at the MBI, only one or two snapshots can be recorded. For these reasons a new detecting method was applied. For the first time multi-channel plate technology was used for the specific purpose of proton imaging.
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Sokollik, T. (2011). Principle of Proton Imaging. In: Investigations of Field Dynamics in Laser Plasmas with Proton Imaging. Springer Theses. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-15040-1_9
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