Mf. Yeh et al., SEARCH FOR A 2485-KEV GAMMA-RAY IN PB-208 WITH THE INELASTIC NEUTRON-SCATTERING REACTION, Physical review. C. Nuclear physics, 54(2), 1996, pp. 942-944
The inelastic neutron scattering reaction has been employed to search
for a 2485-keV gamma ray which has been reported as a deexciting trans
ition from one of the higher-spin members of the two-phonon octupole q
uartet in Pb-208. Although other states of similar spin and excitation
energy are observed, no evidence for a 2485-keV gamma ray is obtained
in either gamma-ray singles or gamma-gamma coincidence measurements.