Photoproton Reaction inBe9

Reaction efficiencies in nucleon channels for 7Li and 9Be nuclei

“…We note that the continuous curve connecting the experimen tal points is given only for the sake of clarity, and is not a result of calculations or adjustment. It should be noted that the total cross section σ tot in [16] for the process was varied virtually from the threshold with a high degree of accuracy and a resolu tion energy step of 0.05 MeV. It can be seen from Fig.…”

“…5. Experi mental data [16] that were collected as far back as in 1962 but still have not found a theoretical interpreta tion are presented in Fig. 5 for comparison.…”

“…5 that the resonant structure is clearly pronounced in the cross section of the process. Resonances are observed in the experimental data from [16] at energies of 1.56, 1.93, and 2.18 MeV. As for the results from the theoretical calculations in [15], they repro duce the above three resonances at energies of 1.59, 1.94, and 2.20 MeV quite well, but there is a notable difference between the results from theoretical calcu lations in [15] and the available experimental data ( ) γ [16].…”

Alpha particles from the photodisintegration of 9Be in the photon energy region 18 to 26 MeV

“…(6) and Clikernan et a/. (7) were obtained by ~iieasuring the induced beta activity of 'Li and colisequently excluded any (y,np/pn) contribution. Komar and Maklinovsky (8) and Denisov and Kul'chilskii (9) on the other hand liieasured photoproton spectra that included protons from the (y,np/pn) reactions.…”