Raw and processed experimental data for hydrogen-isotope emission in the spontaneous fission of 252Cf

The files are separated according to the measurement or analysis periods identified by month in the filenames.Each ROOT file contains processed data from both telescope detectors, including the measured energy loss in the ΔE detector, residual energy measured by the Timepix detector, ΔE–E particle-identification distributions, and analysis results obtained after applying the selected data-quality and particle-identification cuts.The dataset also includes talys_proton_energy_spectrum.ods, which contains the calculated proton-energy spectrum for the ²⁷Al(α,p) reaction obtained using the TALYS nuclear-reaction code.

These calculated data were used to evaluate the contribution of proton-producing reactions involving alpha particles and aluminium and to support interpretation of the measured proton-energy distribution.The experimental uncertainties arise mainly from detector energy resolution, calibration accuracy, electronic noise, counting statistics, event-selection criteria, and the boundaries used for particle identification. The calculated TALYS results additionally depend on the selected reaction-model parameters, nuclear-data libraries, and computational settings.The files may be reused for charged-particle identification, comparison of ΔE–E selection procedures, validation of detector-response simulations, analysis of proton, deuteron, and triton emission, and comparison between experimental spectra and nuclear-reaction model calculations.