(33)S as a cooperative capturer for BNCT.
(33)S is a stable isotope of sulfur for which the emission of an α-particle is the dominant exit channel for neutron-induced reactions. In this work the enhancement of both the absorbed and the equivalent biologically weighted dose in a BNCT treatment with 13.5keV neutrons, due to the presence of (33)S, has been tested by means of Monte Carlo simulations. The kerma-fluence factors for the ICRU-4 tissue have been calculated using standard weighting factors. The simulations depend crucially on the scarce (33)S(n,α)(30)Si cross-section data. The presence of a high resonance at 13.5keV was established by previous authors providing discrepant resonance parameters. No experimental data below 10keV are available. All of this has motivated a proposal of experiment at the n_TOF facility at CERN. A setup was designed and tested in 2011. Some results of the successful test will be shown. The experiment is scheduled for the period November to December 2012.
Universidad de Sevilla, Spain; Centro Nacional de Aceleradores (US-JA-CSIC), Seville, Spain. Electronic address: jpraena@us.es.
J
J
Praena
Universidad de Sevilla, Spain; Centro Nacional de Aceleradores (US-JA-CSIC), Seville, Spain.
M
M
Sabaté-Gilarte
Universidad de Granada, Spain.
I
I
Porras
Physics and Astronomy, University of British Columbia, Vancouver, Canada.
P L
PL
Esquinas
Universidad de Sevilla, Spain.
J M
JM
Quesada
Laboratori Nazionali di Legnaro, INFN, Padova, Italy.
P
P
Mastinu
D065638:Absorption, Radiation; D016754:Boron Neutron Capture Therapy / Q000295:instrumentation*; D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D015233:Models, Statistical; D010315:Particle Accelerators / Q000295:instrumentation*; D011874:Radiometry / Q000295:instrumentation*; D011879:Radiotherapy Dosage; D012542:Scattering, Radiation; D013460:Sulfur Isotopes / Q000737:chemistry* / Q000528:radiation effects*
D013460:Sulfur Isotopes
Cross-section measurement; Epithermal neutron beam; Monte Carlo simulations; Neutron capture therapy