Elsevier

Nuclear Physics A

Volume 216, Issue 1, 26 November 1973, Pages 145-156
Nuclear Physics A

Negative pion capture on 4He with emission of neutron-proton, neutron-deuteron and neutron-triton pairs

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Abstract

The energies and opening angles for neutron-proton, and neutron-deuteron pairs emitted after π capture in 4He have been measured. The data are compared to available theoretical calculations. Both energetic protons and deuterons are strongly correlated in direction with an energetic neutron, being emitted at approximately 180° to each other. A strong enhancement at the high-energy end of the deuteron spectrum is attributed to a strong final state interaction between the remaining two neutrons.

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Present address: Los Alamos Scientific Laboratory, Los Alamos, New Mexico, 87544, USA.

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