NASA NTRS · 19720033022
Radiative pion capture by C12.
Abstract
The energy spectrum of neutrons from radiative pion capture by carbon is investigated. Radiative pion capture is identified by coincidence of a stop signal and a signal from one of six lead-glass gamma detectors when negative pions traverse a beam telescope and are stopped in a carbon target. The energy of the neutrons is measured using the time interval between a stop signal coincident with a gamma-counter signal and a signal from a liquid-oscillator neutron counter. Asymmetry in the neutron-photon angular correlation increases with neutron energy and is accounted for by direct neutron emission.
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Lam, W. C., Gotow, K., Macdonald, B., Trower, W. P., Anderson, D. K.. 1972-01-10. Radiative pion capture by C12.. https://ntrs.nasa.gov/citations/19720033022
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