Effects of the Giant Resonance on the Energy Spectra of Neutrons Emitted Following Muon Capture inC12andO16

Abstract
The spectra of neutrons emitted following muon capture in carbon and oxygen are presented with a resolution of 6.5% at 5 MeV and a precision of 5%. The carbon spectrum is dominated by a broad peak at 4.2 MeV, while the oxygen spectrum is dominated by a narrower peak at 5.1 MeV. Partial transition rates for these two peaks are given. This structure supports theoretical predictions of the excitation of the giant resonance in the capture process.