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Science 9 April 1971:
Vol. 172. no. 3979, pp. 154 - 157
DOI: 10.1126/science.172.3979.154
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Articles

Cosmic-Ray Tracks in Plastics: The Apollo Helmet Dosimetry Experiment

G. M. Comstock 1, R. L. Fleischer 1, W. R. Giard 1, H. R. Hart Jr. 1, G. E. Nichols 1, and P. B. Price 1

1 General Electric Research and Development Center, Schenectady, New York 12301

Counts of tracks from heavy cosmic-ray nuclei in helmets from Apollo missions 8 and 12 show variations caused by solar modulation of the galactic cosmic-ray flux. Specific estimates of the biological damage to certain nonreplaceable cells by track-forming particles during these space missions indicate that the fraction of deactivated cells could range from a lower limit of 3 x 10-7 to an upper limit of 1.4 x 10-4.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Apollo 14 and Apollo 16 Heavy-Particle Dosimetry Experiments.
R. L. Fleischer, R. L. Fleischer, H. R. Hart Jr., G. M. Comstock, M. Carter, A. Renshaw, and A. Hardy (1973)
Science 181, 436-438
   Abstract »    PDF »
Particle Track Etching: Diverse technological uses range from virus identification to uranium exploration.
R. L. Fleischer, R. L. Fleischer, H. W. Alter, S. C. Furman, P. B. Price, and R. M. Walker (1972)
Science 178, 255-263
   PDF »


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