MEASUREMENT OF S-FACTOR FOR THE 11B(p, α)2α REACTION AT LOW ENERGIES: CARBON BUILD-UP EFFECT

Authors : Osman ALAÇAYIR, Nilgün BAYDOĞAN, Adnan BAYKAL, Tamer YALÇIN, Recep BIYIK

Pages : 1-15

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Publication Date : 2022-07-07

Article Type : Research Paper

Abstract :The astrophysical S-factor for the 11Binsert ignore into journalissuearticles values(p, α);2α reaction has been evaluated at effective center of mass insert ignore into journalissuearticles values(CM); energies of 110, 113, 115, 117, 119, 121, 124, 126, 128, 131, and 133 keV. It was observed that there was a significant difference between the calculated values and the literature values. Another difference with literature is the increased yield ratio N0/N1 of the reaction channels 11Binsert ignore into journalissuearticles values(p,α0);8Be and 11Binsert ignore into journalissuearticles values(p,α1);8Be with increasing energy. The reason for the discrepancy was attributed to being carbon build-up on the target surface during irradiation. Due to the carbon build-up effect in the energy range studied, effective energy insert ignore into journalissuearticles values(Eeff); values for the 11Binsert ignore into journalissuearticles values(p, α);2α reaction decreased by about 30 keV.
Keywords : S factor, carbon build up, 11B p, α, 8Be, 11B p, α, 2α reaction