Investigation of semicoherent interactions of 1-GeV protons with silicon

Autor: N. A. Khaldeeva, A. A. Vasenko, N. D. Galanina, V. S. Demidov, I. V. Kirpichnikov, E. V. Demidova, A. S. Starostin, K. E. Gusev, A. Yu. Sokolov
Rok vydání: 2007
Předmět:
Zdroj: Physics of Atomic Nuclei. 70:1160-1169
ISSN: 1562-692X
1063-7788
DOI: 10.1134/s1063778807070034
Popis: 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.
Databáze: OpenAIRE