A study of Rhizophora spp wood phantom for dosimetric purposes using high-energy photon and electron beams

Previous scattering and depth-dose investigations involving use of the Malaysian hardwood Rhizophora spp have shown this medium to produce good agreement with measurements made in water. Present study extends the comparison, now including measurements of percentage depth-dose made for photons at 6 MV and 5 and 12 MeV electron beams. For the 6 MV photon and 5 MeV electron beams, discrepancies between percentage depth-dose for Rhizophora spp and water, at all depths, are found to be within 2.6 and 2.4% respectively. At 12 MeV electron energies, measured percentage depth-doses in Rhizophora spp beyond 3.5 cm depth are found to be in significant discord with those for water. The absorbed dose in water measured in Rhizophora spp at dmax for all three beams produces discrepancies of no more than 1.1% when compared with measurements made in water.