Calculation of primary ionization for a track structure Monte Carlo code - Application of the continuum distorted wave approximation (CDW-EIS)
نویسندگان
چکیده
For heavy ion treatment planning, the Local Effect Model (LEM) [1] is applied to determine the biologically equivalent dose. One of its major constituents is the radial dose distribution around stopping ions in water. Presently, a simple amorphous track structure model is used based on experimental data and Monte Carlo simulations. In order to improve this model, possibly by applying results of Monte Carlo simulations directly to the LEM, we investigate the double differential cross sections of primary ionization processes due to ion-target interactions.
منابع مشابه
An Efficiency Studying of an Ion Chamber Simulation Using Vriance Reduction Techniques with EGSnrc
Background: Radiotherapy is an important technique of cancer treatment using ionizing radiation. The determination of total dose in reference conditions is an important contribution to uncertainty that could achieve 2%. The source of this uncertainty comes from cavity theory that relates the in-air cavity dose and the dose to water. These correction factors are determined from Monte Carlo calcu...
متن کاملTheoretical ionization and capture cross sections for DNA nucleobases impacted by light ions.
PURPOSE Although DNA lesions are considered of prime importance for describing the post-irradiation cellular survival, they still remain rarely studied on both experimental and theoretical sides. Under these conditions, we here propose different theoretical models for predicting the single ionization and single capture total cross sections for DNA bases impacted by protons. MATERIAL AND METHO...
متن کاملStrong double K–K transfer channel in near symmetric collision of Si + Ar at intermediate velocity range
We present a combined study of single and double K–K electron transfer cross sections along with the single and double K-shell ionization of Ar induced by Si projectiles in the energy range 0.9–4.0 MeV u−1. The charge-state dependence of the normal and hypersatellite x-rays was used to derive the cross sections for the oneand two-electron processes, respectively. The enhancement in the fluoresc...
متن کاملThe effect of electronic disequilibrium on the received dose by lung in small fields with photon beams: Measurements and Monte Carlo study
Background: Prediction of the absorbed dose in irradiated volume plays an important role in the outcome of radiotherapy. Application of small fields for radiotherapy of thorax makes the dose calculation process inaccurate due to the existence of electronic disequilibrium and intrinsic deficiencies in dose calculation algorithms. To study the lung absorbed dose in radiotherapy with smal...
متن کاملAssessment of The Relation Between Energy Of Primary Protons And Undesired Neutron Dose During Proton Therapy By Monte Carlo Method
Introduction: High-energy beams of protons offer significant advantages for the treatment of deepseated local tumors. Their physical depth-dose distribution in tissue is characterized by a small entrance dose and a distinct maximum -Bragg peak- near the end of range with a sharp fall-off at the distal edge. Alongside its advantages there are some point that they need to meticul...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008