摘要
The angular distributions,excitation functions and absolute cross sections of a parti-cles from p-<sup>11</sup>B reaction for proton energies from 778 keV to 3389 keV are measured.The PIPS（Passivated Implanted Planar Silicon）and ΔE detector spectrometer is used to distinguish theprotons and α particles based on the fact that proton peak has larger displacement when protonspass through the ΔE detector.Whole spectra of <sup>11</sup>B（p,2α）<sup>4</sup>He subsequential decay via the firstexcited state of <sup>8</sup>Be are first measured.The behavior of the cross section is discussed.
The angular distributions,excitation functions and absolute cross sections of a parti- cles from p-<sup>11</sup>B reaction for proton energies from 778 keV to 3389 keV are measured.The PIPS （Passivated Implanted Planar Silicon）and ΔE detector spectrometer is used to distinguish the protons and α particles based on the fact that proton peak has larger displacement when protons pass through the ΔE detector.Whole spectra of <sup>11</sup>B（p,2α）<sup>4</sup>He subsequential decay via the first excited state of <sup>8</sup>Be are first measured.The behavior of the cross section is discussed.
基金
The project supported in part by Natiortal Natural Science Foundation of China and Nucleat Industry Science Foundation of China
