The impact parameter dependence of the inactivation of Bacillus subtilisspores has been measured using a heavy-ion mini-beam facility, which permits single-ion exposure of individual spores with a spatial accuracy of about 1 μm. The apparatus consists basically of a collimator and a microscope used to position the biological objects directly behind the collimator. Measurements were obtained for nickel, tin, and uranium ions at 1.4 MeV/u. for central hits the results show an inactivation probability of less than one with a continuous decrease in inactivation with increasing distance. Long-ranging effects which extend beyond the range of the δ electrons could not be confirmed.
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Research Article| March 01 1992
Heavy-Ion Effects on Bacteria Spores: The Impact Parameter Dependence of the Inactivation
Radiat Res (1992) 129 (3): 250–257.
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U. Weisbrod, H. Bücker, G. Horneck, G. Kraft; Heavy-Ion Effects on Bacteria Spores: The Impact Parameter Dependence of the Inactivation. Radiat Res 1 March 1992; 129 (3): 250–257. doi: https://doi.org/10.2307/3578023
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