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Dosimetry of 40 and 70 MeV/n $^{16}$O beams

Abstract : Using CR-39 plastic track detectors the range values of O-16 ions at two different energies (initially in the beam line, 39.97 MeV/n and 69.98 MeV/n) were measured after escaping the beam pipe and found to be (3050 +/- 40) mu m and (8210 +/- 90) mu m, respectively. The longitudinal and projected angular spread of oxygen ions of an initial energy of 69.98 MeV/n in the region of the Bragg peak was derived from the measured geometrical parameters of tracks. Based on a calibration curve (etch rate ratio vs total linear energy transfer in CR-39) and the measured track length distribution at the range end of oxygen ions, the complete depth dose profile of a 67.7 MeV/n O-16 beam in CR-39 (plateau, extended Bragg peak and residual ionization caused by projectile like fragments) was obtained.
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Submitted on : Monday, March 20, 2000 - 1:09:27 PM
Last modification on : Wednesday, September 16, 2020 - 4:03:23 PM


  • HAL Id : in2p3-00015108, version 1



A.N. Golovchenko, J. Skvarc, R. Ilic, S. Slavic, R. Freeman, et al.. Dosimetry of 40 and 70 MeV/n $^{16}$O beams. Radiation Measurements, Elsevier, 1997, 28, pp.455-462. ⟨in2p3-00015108⟩



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