منابع مشابه
Oxygen in space radiation biology
Ionizing radiation at low LET is more effective in the presence of oxygen than in its absence in producing most biological effects. Most experimental radiobiological irradiations are conducted in the presence of oxygen at sufficient concentration to produce a “full oxygen effect”. To understand the full oxygen effect it is helpful to review the traditional definition of OER, which is the ratio ...
متن کاملGeant4 hadronic physics for space radiation environment.
PURPOSE To test and to develop Geant4 (Geometry And Tracking version 4) Monte Carlo hadronic models with focus on applications in a space radiation environment. MATERIALS AND METHODS The Monte Carlo simulations have been performed using the Geant4 toolkit. Binary (BIC), its extension for incident light ions (BIC-ion) and Bertini (BERT) cascades were used as main Monte Carlo generators. For co...
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1. Space Radiation Environment and Modeling • The Earth’s geomagnetic field and its effect on high-energy, ionizing particles including electrons, protons, and some heavy ions • The Earth's trapped radiation environment and Trapped radiation models, the characteristics of the Van Allen belts and South Atlantic Anomaly • Effects of trapped radiation on spacecraft and components • Space Weather c...
متن کاملRadiation Physics and Chemistry
We review an atomic resolution imaging method based on the analysis of the fine structure in X-ray absorption anisotropy, which results from incident beam diffraction. For a polychromatic X-ray beam, due to the suppression of higher order diffraction fringes, X-ray absorption anisotropy patterns can be interpreted as distorted real-space projections of the atomic structure around absorbing atom...
متن کاملRadiation Safety and Physics
Radiation technology is increasingly involved in the care of breast patients in the modern era, both in the diagnosis of benign and malignant conditions and in the treatment of cancer. Accordingly, surgeons managing breast patients must have a fundamental understanding of radiation physics, its biological effects, and the rationale and methodology used to protect the patient, the surgeon, and a...
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ژورنال
عنوان ژورنال: RADIOISOTOPES
سال: 2019
ISSN: 0033-8303,1884-4111
DOI: 10.3769/radioisotopes.68.403