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Microdosimetry near the Trajectory of High-Energy Heavy Ions
Single-event energy distributions were measured in a 1.3-μm-diameter site as a function of radial distance from the trajectory of high-energy iron ions having an energy of about 600 MeV/amu. It was found that beyond distances of a few micrometers the average lineal energy of the (mostly single) seco...
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Published in: | Radiation research 1988-11, Vol.116 (2), p.183-195 |
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Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that cite this one |
Online Access: | Get full text |
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Summary: | Single-event energy distributions were measured in a 1.3-μm-diameter site as a function of radial distance from the trajectory of high-energy iron ions having an energy of about 600 MeV/amu. It was found that beyond distances of a few micrometers the average lineal energy of the (mostly single) secondary electrons (δ rays) is of the order of 3 keV/μm. This is similar to the value found in a medium irradiated by 170-keV photons. The frequency-mean specific energy for δ rays occurring at large distances from the path of the primary ion exceeds the calculated (radial) absorbed dose by two orders of magnitude. |
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ISSN: | 0033-7587 1938-5404 |
DOI: | 10.2307/3577456 |