Relative effectiveness of mixed radiation fields.

Simplified RBE-dose calculations for mixed radiation fields.

Design and calibration of a passive detector for separating neutron, proton and alpha particles in mixed radiation fields

In this study, calibration process was carried out for deigned new CR-39 nuclear track detector for protons, neutrons and alpha particles separately under the same etching condition. In order to aim this purpose, americium-beryllium standard source (241Am-Be) and Plexiglas phantom for neutron irradiation, brass collimators and americium standard source (241Am) for alpha irradiation and the acce...

Evaluation of variable relative biological effectiveness and the creation of homogenous biological dose in the tumor region in helium ion radiation to the V79 cell line

In radiation therapy, ions heavier than proton have more biological advantages than a proton beam. Recently, ion helium has been considered due to high linear energy transfer (LET) to the medium and a higher relative biological effect (RBE). To design the spread-out Bragg peak (SOBP) of biological dose for radiation with any type of ion, we need exact values of RBE, which is dependent to dose, ...

Nuclear fragmentation models and uncertainties in cosmic ray transport and radiobiology studies.

The biological effects of relativistic nuclei are of interest because of their potential hazards to astronauts during spaceflight and for possible radiotherapy treatment for cancer patients. Nuclear fragmentation alters the composition of relativistic ion beams as they pass through tissue or other shielding materials, providing a mixed radiation field and complica­ ting the understanding of bio...

Investigation of neutron flux by thermoluminescence dosimeters in the neutron-gamma mixed field

Introduction: Neutrons have many applications in various fields, such as medicine. The important application of neutron in medical science is in Boron Neutron Capture Therapy (BNCT). Because of this, determination of neutron dose and flux is critical for the health maintaining of workers and patients exposed to this beam. The neutron radioisotope sources produce gamma rays in ...