منابع مشابه
Microbeams of heavy charged particles.
We have established a single cell irradiation system, which allows selected cells to be individually hit with defined number of heavy charged particles, using a collimated heavy-ion microbeam apparatus at JAERI-Takasaki. This system has been developed to study radiobiological processes in hit cells and bystander cells exposed to low dose and low dose-rate high-LET radiations, in ways that canno...
متن کاملMutagenic effects of heavy charged particles.
Heavy charged particles constitute the most important radiation risk in space. Since mutations can give rise to cancer the investigation of their induction may be helpful for risk quantification. This paper describes experiments in a number of mammalian cells performed with a large range of linear energy transfer (LET). RBE values are always found to increase with LET up to about 100 keV/microm...
متن کاملTumor Therapy with Heavy Charged Particles
The inverse depth dose profile i.e. the increase of the dose with penetration depth make heavy charged particles like protons and heavy ions an ideal tool for the radiotherapy of deep-seated tumors. For carbon ions this good dose profile is potentiated by an additional increase in the relative biological effectiveness (RBE) towards the end of the particle range. The physical and biological basi...
متن کاملEnergy Straggling of Heavy Charged Particles in Thick Absorbers
Department 0,( Physics, Berea College, Berea, Kentucky 40403 t;,.. (Received 29 August 1968; revised manuscript received 23 January 1969) " , j The theory of energ}. straggling attempts to calculate F(E,S), where F(E,S)dli is the fraction of the heavy i charged particles which have an energy bet\veen II: and I:'+dl:: after a path length S has been traversed in 1 absorbing medium. This paper dev...
متن کاملExposure to heavy charged particles affects thermoregulation in rats.
Rats exposed to 0.1-5 Gy of heavy particles (56Fe, 40Ar, 20Ne or 4He) showed dose-dependent changes in body temperature. Lower doses of all particles produced hyperthermia, and higher doses of 20Ne and 56Fe produced hypothermia. Of the four HZE particles, 56Fe particles were the most potent and 4He particles were the least potent in producing changes in thermoregulation. The 20Ne and 40Ar parti...
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ژورنال
عنوان ژورنال: Biological Sciences in Space
سال: 2004
ISSN: 0914-9201,1349-967X
DOI: 10.2187/bss.18.235