Neutron particle-hole structure of states in 208 Pb determined

Proton scattering on 208 Pb via isobaric analog resonances (IARs) in 209 Bi generates neutron particle-hole configurations in excited states of 208 Pb. The spin and parity of the neutron particle corre- spond to the spin and parity of the resonance. We performed experiments on the 208 Pb(p, p � ) reaction via all known isobaric analog resonances in 209 Bi with the Q3D magnetic spectrograph in Munchen. We observed more than 130 levels in the range of excitation energies Ex < 6.4 MeV. In the proton decay of the d5/2 resonance, 29 levels have cross-sections larger than 5% of the maximum cross-section of any level. Six levels in the range 4.6 semiconductor detectors reveals details of the structure of at least 18 states in the range 4.6

Keywords:

• Resonance
• Proton decay
• Neutron
• Scattering
• Proton
• Excited state
• Nuclear magnetic resonance
• Spin-½
• Semiconductor detector
• Physics
• Atomic physics
• Excitation
• Parity (mathematics)
• Spins

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