Figure 1:
a) Idealized neutron time-of-flight distribution F(tau) expected from the Coulomb de-excitation process.
b) Histogram: measured time-of-flight spectrum of neutrons from the charge exchange reaction pi¯ p -> pi° n, after background subtraction, for a flight path of 4.73 m. The time is measured from the centre of the neutron peak corresponding to v0 = 0.894 cm/ns [2]. Curves: fits to the data including Coulomb de-excitation processes. The numbers n -> n´ indicate the fitted positions of the steps in the TOF distribution of neutrons which are emitted after the corresponding Coulomb de-excitation. For comparison, the fit using the parameterization of Ref. [2] (two uniform kinetic-energy distributions of the pi¯p-atoms) is shown in the inserts.
c) Same as b); here the neutron flight path is 8.35 m.

Last updated by J. Schottmüller on 3-Feb-1997