Formation of 24Mg* in the Splitting of 28Si Nuclei by 1-GeV Protons

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dc.creatorVasenko, A. A.
dc.creatorGalanina, N. D.
dc.creatorGusev, K. E.
dc.creatorDemidov, V. S.
dc.creatorDemidova, E. V.
dc.creatorKirpichnikov, I. V.
dc.creatorSokolov, A. Yu.
dc.creatorStarostin, A. S.
dc.creatorKhaldeeva, N. A.
dc.date2006-09-01
dc.date.accessioned2026-07-07T12:17:00Z
dc.date.available2026-07-07T12:17:00Z
dc.descriptionThe 28Si(p, p' gamma)24Mg reaction has been studied at the ITEP accelerator by the hadron-gamma coincidence method for a proton energy of 1 GeV. Two reaction products are detected: a 1368.6-keV gamma-ray photon accompanying the transition of the 24Mg* nucleus from the first excited state to the ground state and a proton p' whose momentum is measured in a magnetic spectrometer. The measured distribution in the energy lost by the proton in interaction is attributed to five processes: the direct knockout of a nuclear alpha cluster, the knockout of four nucleons with a total charge number of 2, the formation of the DeltaSi isobaric nucleus, the formation of the Delta isobar in the interaction of the incident proton with a nuclear nucleon, and the production of a pi meson, which is at rest in the nuclear reference frame. The last process likely corresponds to the reaction of the formation of a deeply bound pion state in the 28P nucleus. Such states were previously observed only on heavy nuclei. The cross sections for the listed processes have been estimated.
dc.description14 pages, 3 figures submitted to JETP Letters
dc.identifierhttps://arxiv.org/abs/nucl-ex/0609001
dc.identifierhttp://arxiv.org/abs/nucl-ex/0609001
dc.identifierJETPLett.83:433,2006; PismaZh.Eksp.Teor.Fiz.83:504-509,2006; Erratum-ibid.84:354,2006
dc.identifierdoi:10.1134/S002136400610002X 10.1134/S0021364006180172
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211984
dc.subjectNuclear Experiment
dc.titleFormation of 24Mg* in the Splitting of 28Si Nuclei by 1-GeV Protons
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