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<p>reaction (p is <a href="page.php?w=proton">proton</a>):</p>

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: + n ->  + p + 0.626 MeV</p>

<p>The highest rate of carbon-14 production takes place at altitudes of 9 to 15 km and at high <a href="page.php?w=geomagnetic_latitude">geomagnetic latitude</a>s.</p>

<p>The rate of C production can be modeled, yielding values of 16,400 or 18,800 atoms of  per second per square meter of Earth's surface, which agrees with the global <a href="page.php?w=Emissions_budget">carbon budget</a> that can be used to backtrack, but attempts to measure the production</p><p>
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