Investigation of semicoherent interactions of 1-GeV protons with silicon |
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Authors: | A A Vasenko N D Galanina K E Gusev V S Demidov E V Demidova I V Kirpichnikov A Yu Sokolov A S Starostin N A Khaldeeva |
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Institution: | (1) Institute for Theoretical and Experimental Physics, Bol’shaya Cheremushkinskaya ul. 25, Moscow, 117218, Russia |
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Abstract: | An experiment on studying the 28Si(p, p′ γ 0 X)24Mg semicoherent reaction is carried out at the MAG setup on the 1-GeV proton beam of the U-10 ITEP accelerator. Two particles, proton and γ-ray photon, which accompanies the transition of the 24Mg* nucleus from the first excited state to the ground state, are detected. When the events with the proton emission angle from 3° to 6.5° are selected, the following four processes are observed: the direct knockout of a nuclear α cluster by a proton, the formation of a ΔSi isobaric nucleus, the formation of a Δ1232 isobar, and the production of a π 0 meson at rest in the nuclear coordinate system. The cross sections for the indicated processes are obtained. |
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