DOSE EFFECT OF THE S-33(n,alpha) (SI)-S-30 REACTION IN BNCT USING THE NEW n_TOF-CERN DATA

作者：Sabate Gilarte M^*; Praena J; Porras I; Quesada J M

来源：Radiation Protection Dosimetry, 2018, 180(1-4): 342-345.

DOI：10.1093/rpd/ncx178

S-33 is a stable isotope of sulphur which is being studied as a potential cooperative target for Boron Neutron Capture Therapy (BNCT) in accelerator-based neutron sources because of its large (n, alpha) cross section in the epithermal neutron energy range. Previous measurements resolved the resonances with a discrepant description of the lowest-lying and strongest one (at 13.5 keV). However, the evaluations of the major databases do not include resonances, except EAF-2010 which shows smaller values in this range than the experimental data. Furthermore, the glaring lack of data below 10 keV down to thermal (25.3 meV) has motivated a new measurement at n_TOF at CERN in order to cover the whole energy range. The inclusion of this new S-33(n, alpha) cross section in Monte Carlo simulations provides a more accurate estimation of the deposited kerma rate in tissue due to the presence of S-33. The results of those simulations represent the goal of this work.

• 出版日期2018-8