Track “core” effects in heavy ion radiolysis
نویسندگان
چکیده
منابع مشابه
Track “Core” Effects in Heavy Ion Radiolysis
By assuming that HO2 ● radical production in water and H2 production in benzene are 2 hit processes, and applying the concepts of track physics, we are able to obtain a parametric fit to the yields of these reactions by heavy ion radiolysis from knowledge of the radial dose distribution about a heavy ion’s path. We make no use of the concept of a track core, for no clearly definable track core ...
متن کاملHeavy Ion Track-Etching of PEEK Membranes
Heavy ion tracks in polymer membranes can be transformed into microand nano-channels by means of wet-chemical etching. Up to now most commonly polycarbonate (PC), polyethylene therephthalate (PET) and polyimide (PI) membranes were employed for this purpose. For some applications such as proton conductive membranes for fuel cells, high resistance of the material against heat and solvents as well...
متن کاملVisualisation of γH2AX Foci Caused by Heavy Ion Particle Traversal; Distinction between Core Track versus Non-Track Damage
Heavy particle irradiation produces complex DNA double strand breaks (DSBs) which can arise from primary ionisation events within the particle trajectory. Additionally, secondary electrons, termed delta-electrons, which have a range of distributions can create low linear energy transfer (LET) damage within but also distant from the track. DNA damage by delta-electrons distant from the track has...
متن کاملHeavy-ion effects: from track structure to DNA and chromosome damage
The use of carbon ions for the treatment of certain tumour types, especially radioresistant tumours, is becoming more frequent due to the carbonion dose localization and high relative biological effectiveness (RBE) in the Bragg peak region. Human beings can also be exposed to heavy ions in space, since galactic cosmic rays are a mixed field consisting of not only high-energy protons and He ions...
متن کاملCore-corona separation in ultrarelativistic heavy ion collisions.
Simple geometrical considerations show that the collision zone in high energy nuclear collisions may be divided into a central part ("core"), with high energy densities, and a peripheral part ("corona"), with smaller energy densities, more like in pp or pA collisions. We present calculations that allow us to separate these two contributions, and which show that the corona contribution is quite ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry
سال: 1989
ISSN: 1359-0197
DOI: 10.1016/1359-0197(89)90031-3