Microdosimetry of Range-Modulated Bearns of Heavy Ions: I. Determination of the Yield of Projectile Fragments from Microdosimetric Spectra for Neon- 10 Beams

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Abstract
A method for the calculation of projectile fragmentation of spectra from microdosimetric distributions for heavy ions is proposed. The fundamental quantity determined in microdosimetric measurements is the distribution of energy deposited in a specified volume. For high-energy heavy-ion beams, the nuclear interactions are dominated by projectile fragmentation in which the secondary particles are emitted with a velocity nearly equal to that of the primary particle. It is possible to calculate the distributinon of energy deposited for each particle type; the microdosimetric spectra can then be used to determine the relative contributions from each type of particle. Experimental microdosimetric data obtained for a range-modulated beam of 557 MeV/amu [atomic mass unit] Ne ions are presented and the data in the plateau are analyzed as an example of this technique.

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