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Fig. 3 Energy (left) and time (right) spectra of a 5 × 5 mm 2 cell irradiated with a 129 Xe beam at
10 MeV/u. On both spectra the x-axis is given in channels. The time spectrum was obtained from
the time difference between the cell signal (START) and the cyclotron frequency signal (STOP).
The Gaussian fits drawn provided the FWHM for the energy and time resolution
Fig. 4 Variation of the signal amplitude (left) and time difference between the cell and time signal
from CIME (right) as a function of the number of recorded events during irradiation of a 10 × 10
mm 2 solar cell with a 84 Kr beam at 15 MeV/u at a 703 k pps intensity for 1 h
affecting the energy resolution by 4%, while the time spectra remains essentially
unchanged during the irradiation time. In total, after such irradiation more than
2500 M ions had impinged on the cell. Its radiation damage resistance can only
be appreciated considering that a Si detector is reported to only withstand 250 M
ions of 1 A MeV at a rate of 1000 pps.
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