Author/Authors :
P. Golubev، نويسنده , , V. Avdeichikov، نويسنده , , K.G. Fissum، نويسنده , , B. Jakobsson، نويسنده , , I.A. Pshenichnov، نويسنده , , W.J. Briscoe، نويسنده , , G.V. OʹRielly، نويسنده , , J. Annand، نويسنده , , K. Hansen، نويسنده , , L. Isaksson، نويسنده , , H. J?derstr?m، نويسنده , , M. Karlsson، نويسنده , , M. Lundin، نويسنده , , B. Schroder، نويسنده , , L. Westerberg، نويسنده ,
Abstract :
The very first data from MAX-lab in Lund, Sweden on pion photoproduction at threshold energies are presented. The decrease of the total π+ yield in γ+12C, 27Al reactions below 200 MeV as well as the dσ/dΩ cross-section data essentially follow the predictions of an intranuclear-cascade model with an attractive potential for the pion–nucleus interaction. However, View the MathML source, 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.
Keywords :
27Al(? , ?+X) , Measured , ? , ?(? , e) , Comparison with other data , Intranuclear cascade model , E=176 MeV , Nuclear reactions , 2H , 12C
