N. Bianchi et al., ABSOLUTE MEASUREMENT OF THE TOTAL PHOTOABSORPTION CROSS-SECTION FOR CARBON IN THE NUCLEON RESONANCE REGION, Physics letters. Section B, 309(1-2), 1993, pp. 5-9
We present the results of an absolute measurement of the total nuclear
photoabsorption cross section for carbon in the higher nucleon resona
nce region. In the DELTA region our results agree with existing data,
while at higher energies they show a damping in the excitation of the
higher nucleon resonances, clearly seen in the photon absorption on pr
oton and deuteron.