Isotopic effects in the (π±, 2N) reactions on 16O and 18O

A. Altman, D. Ashery, E. Piasetzky, J. Lichtenstadt, A. I. Yavin, W. Bertl, L. Felawka, H. K. Walter, R. J. Powers, R. G. Winter, J. v.d. Pluym

Research output: Contribution to journalArticlepeer-review


The (π+, 2p), (π+, pn) and (π-, pn) reactions on 16O and 18O were studied at 165 MeV. The cross section for the (π+, 2p) reaction on 18O is larger than that for 16O be only 5% ± 3%, while the total π+ absorption cross section is larger by 17% ± 5%. This supports the assumption that two-nucleon absorption occurs mainly on nucleons in the same shell. It is further concluded that Δ++n → pp is not only absorption mechanism that couples strongly to the nucleon knock out reactions.

Original languageEnglish
Pages (from-to)337-340
Number of pages4
JournalPhysics Letters B
Issue number5-6
StatePublished - 6 Sep 1984


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