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1.
Adv Space Res ; 17(2): 87-94, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-11540376

RESUMO

As a part of the physical-technical program of the heavy-ion therapy project at GSI we have investigated the nuclear fragmentation of high-energy ion beams delivered by the heavy-ion synchrotron SIS, using water as a tissue-equivalent target. For a direct comparison of fragmentation properties, beams of 10B, 12C, 14N, and 16O were produced simultaneously as secondary beams from a primary 18O beam and separated in flight by magnetic beam analysis. The Z-distributions of beam fragments produced in the water target were measured via energy loss in a large ionisation chamber and a scintillator telescope. From these data we obtained both total and partial charge-changing cross sections. In addition we have performed Bragg measurements using two parallel-plate ionization chambers and a water target of variable length. The detailed shape of the measured Bragg curves and the measured cross sections are in good agreement with model calculations based on semi-empirical formulae.


Assuntos
Boro , Carbono , Nitrogênio , Física Nuclear , Oxigênio , Transferência de Energia , Íons , Radioisótopos de Oxigênio , Doses de Radiação , Radioterapia , Síncrotrons , Água
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