Figure 2
From: First on-line detection of radioactive fission isotopes produced by laser-accelerated protons
Proton spectrum of calibration laser shots recorded with RCFs \(5 \, \hbox {cm}\) behind the laser acceleration source. To reflect the aperture of the uranium target container, only \(1 \, \hbox {cm}\) of the RCFs in the middle were evaluated. The exponential function is obtained by an iterative t to the deposited energy in the RCF layers. Above the dotted line at \(15 \, \hbox {MeV}\) the protons contribute significantly to the fission process.
