TY  - JOUR
AU  - Wasilewska, B. et al
AU  - Gaudilla, V.
PY  - 2022
DA  - 2022//
TI  - gamma decay to the ground state from the excitations above the neutron threshold in the Pb-208(p, p ' gamma) reaction at 85 MeV
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 014310
EP  - 7pp
VL  - 105
IS  - 1
PB  - Amer Physical Soc
AB  - A new measurement of gamma decay from the states above the neutron threshold in Pb-208 has been performed at Cyclotron Centre Bronowice in Krakow, Poland. The main goal of the experiment was to observe the gamma decay to the ground state from the isoscalar giant quadrupole resonance (ISGQR). To this day, the only published observation of this phenomenon dates back to the late 1980s, where gamma decay to the ground state branching ratio was reported. At variance with the existing measurement using inelastic scattering of O-17, here proton inelastic scattering is employed. In particular, data were obtained for Pb-208(p, p'gamma) at 85 MeV beam energy, where gamma rays were measured for proton scattering angles 8.9 degrees, 10.7 degrees, 12.5 degrees, and 14.3 degrees. By applying a similar analysis method as in the previous experiment, the branching ratio of ISGQR gamma decay to the ground state was extracted from the data.
SN  - 2469-9985
UR  - https://doi.org/10.1103/PhysRevC.105.014310
DO  - 10.1103/PhysRevC.105.014310
LA  - English
N1  - WOS:000752560800007
ID  - Wasilewska+Gaudilla2022
ER  -