Stopping force and straggling of 0.6–4.7 MeV H, He and Li ions in the polyhydroxybutyrate foil

Stopping force and straggling of 0.6–3.5 MeV 1H ions, 2.0–4.7 MeV 4He ions and 1.4–4.4 MeV 7Li ions in the polyhydroxybutyrate (PHB) foil were measured by means of a transmission technique. The measured stopping forces are in well agreement with the SRIM 2008 calculation and the ICRU Report tables, except for the lower energy region. The obtained energy loss straggling deviates from the Bohr’s value by as much as 23.6% for the energies under study. The validity of the Bragg’s rule has also been demonstrated in the stopping force and straggling for 1H, 4He and 7Li ions in the PHB foil.