The 25Mg(p, gamma)26Al reaction at low astrophysical energies
- 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
DOIAbstract
In the present work we report on a new measurement of resonance strengths ωγ in the reaction 25Mg(p, γ )26Al at Ecm = 92 and 189 keV. This study was performed at the LUNA facility in the Gran Sasso underground laboratory using a 4π BGO summing crystal. For the first time the 92 keV resonance was directly observed and a resonance strength ωγ = (2.9 ± 0.6) × 10−10 eV was determined. Additionally, the γ -ray branchings and strength of the 189 keV resonance were studied with a high resolution HPGe detector yielding an ωγ value in agreement with the BGO measurement, but 20% larger compared to previous works
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