Speaker
Description
We have performed in-beam muon activation measurements to deduce the
production branching ratio of the isotopes produced by the muon
capture reaction of Pd isotopes.
The muon capture reaction is a capture of a negative muon into the
proton via the weak interaction. While muon capture is analogous to
electron capture, the excitation energy populated by the muon capture
is much higher at about 5-50 MeV because of the large reaction Q
value, and the residual nuclei emit several neutrons and gamma rays.
Hence, the branching ratio of the produced isotopes provides the
distribution of the excitation energies.
The experiment was performed at Rutherford Appleton Laboratory
(RIKEN-RAL). The low-energy muon beam was obtained by the decay of the
pion, which was produced by the reaction of a high-intensity proton
beam on the graphite target. The muon is stopped at the targets and
forms the muonic atom and induced muon capture reaction. Thanks to the
time structure of the pulsed muon beam from the synchrotron,
beta-gamma spectroscopy is used to measure the radioactivity of the
produced isotopes between beam pulses and deduce their branching
ratio.
We will report the result of the experiment in the poster presentation.
