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Pion emission in H-2, C-12, Al-27(gamma, pi(+)) reactions at threshold
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2008 (English)In: Nuclear Physics A, ISSN 0375-9474, E-ISSN 1873-1554, Vol. 806, 216-229 p.Article in journal (Refereed) Published
Abstract [en]

NUCLEAR REACTIONS H-2, C-12, Al-27(gamma . pi + X), E=176 MeV, measured sigma,sigma(theta, E). Comparison with other data and intranuclear cascade model/k The very first data from MAX-lab in Lund, Sweden on pion photoproduction at threshold energies are presented. The decrease of the total pi(+) yield in gamma + C-12, Al-27 reactions below 200 MeV as well as the d sigma/d Omega cross-section data essentially follow the predictions of an intranuclear-cascade model with an attractive potential for the pion-nucleus interaction. However, d(2)sigma/d Omega dT, cross-section data at 176 MeV show deviations which call for refinements of the model and possibly also for the inclusion of coherent pion-production mechanisms.

Place, publisher, year, edition, pages
2008. Vol. 806, 216-229 p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-110052DOI: 10.1016/j.nuclphysa.2008.02.308ISI: 000256566000013OAI: oai:DiVA.org:uu-110052DiVA: diva2:275076
Available from: 2009-11-03 Created: 2009-11-02 Last updated: 2017-12-12

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