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27 April 2024

» arxiv » 1112.3313

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The 25Mg(p,g)Al reaction at low astrophysical energies
LUNA Collaboration ; F. Strieder ; B. Limata ; A. Formicola ; G. Imbriani ; M. Junker ; D. Bemmerer ; A. Best ; C. Broggini ; A. Caciolli ; P. Corvisiero ; H. Costantini ; A. DiLeva ; Z. Elekes ; Zs. Fülöp ; G. Gervino ; A. Guglielmetti ; C. Gustavino ; Gy. Gyürky ; A. Lemut ; M. Marta ; C. Mazzocchi ; R. Menegazzo ; P. Prati ; V. Roca ; C. Rolfs ; C. Rossi Alvarez ; E. Somorjai ; O. Straniero ; F. Terrasi ; H. P. Trautvetter ;
Date:	14 Dec 2011
Abstract:	In the present work we report on a new measurement of resonance strengths in the reaction 25Mg(p,gamma)26Al at E_cm= 92 and 189 keV. This study was performed at the LUNA facility in the Gran Sasso underground laboratory using a 4pi BGO summing crystal. For the first time the 92 keV resonance was directly observed and a resonance strength omega-gamma=(2.9+/-0.6)x10E-10 eV was determined. Additionally, the gamma-ray branchings and strength of the 189 keV resonance were studied with a high resolution HPGe detector yielding an omega-gamma value in agreement with the BGO measurement, but 20% larger compared to previous works.
Source:	arXiv, 1112.3313
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