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Author Lingenfelter, R. E. ♦ Flamm, E. J.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ATMOSPHERE ♦ CARBON 14 ♦ COSMIC RADIATION ♦ EARTH ♦ INTERACTIONS ♦ NEUTRONS ♦ NITROGEN ♦ NUMERICALS ♦ PRODUCTION ♦ PROTONS ♦ STARS ♦ SUN
Abstract The rate of production of carbon-14 by interaction of solar-proton- produced neutrons with atmospheric nitrogen is calculated for the period 1956-61. A time-average production rate of 0.05 to 0.l2 carbon-14 atoms cm/sup -2/ sec/sup -1/, less than 5 per cent of the rate of production by galactic cosmic-ray neutrons, is obtained. Solar particle radiation of the intensity observed during the last solar cycle increases the neutron flux at high altitudes by more than an order or magnitude for shont periods but does not significantly affect the atmospheric reservoir of carbon-14. (auth)
Educational Use Research
Learning Resource Type Article
Publisher Date 1964-03-01
Journal J. Atmospheric Sci.
Volume Number 21
Organization Univ. of California, Los Angeles


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