Measurement of the branching ratio for β -delayed α decay of 16 N
| العنوان: | Measurement of the branching ratio for β -delayed α decay of 16 N |
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| المؤلفون: | H. O. U. Fynbo, J. Refsgaard, M. V. Lund, Riccardo Raabe, Lorenz Willmann, A. Sytema, M N Portela, Oliver S. Kirsebom, G. Randisi, Hans Wilschut, Elwin Dijck, Francesca Renzi, S. Sambi |
| المساهمون: | Precision Frontier |
| المصدر: | Physics Letters B, 752, 296-301. ELSEVIER SCIENCE BV Physics Letters B Physics Letters B, Vol 752, Iss C, Pp 296-301 (2016) Refsgaard, J, Kirsebom, O S, Dijck, E A, Fynbo, H O U, Lund, M V, Portela, M N, Raabe, R, Randisi, G, Renzi, F, Sambi, S, Sytema, A, Willmann, L & Wilschut, H W 2016, ' Measurement of the branching ratio for β-delayed α decay of 16N ', Physics Letters B: Particle Physics, Nuclear Physics and Cosmology, vol. 752, pp. 296-301 . https://doi.org/10.1016/j.physletb.2015.11.047 |
| بيانات النشر: | Elsevier BV, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Nuclear and High Energy Physics, S-factor, C-12, β decay, FOS: Physical sciences, chemistry.chemical_element, Properties of specific nuclei 6 <= Lambda <= 19, Properties of specific nuclei 6≤A≤19, 01 natural sciences, Ion, ENERGY, Particle decay, Stellar helium burning, Nucleosynthesis, 0103 physical sciences, Nuclear astrophysics, O-16, Nuclear Experiment (nucl-ex), PARTICLE DECAY, 010306 general physics, Nuclear Experiment, Helium, NUCLEOSYNTHESIS, Physics, MEV 2-STATE, S FACTOR, 010308 nuclear & particles physics, Branching fraction, GAMMA)O-16, Beta decay, lcsh:QC1-999, chemistry, Properties of specific nuclei 6 ≤ A ≤ 19, beta decay, Atomic physics, CROSS-SECTION, lcsh:Physics, MASSIVE STARS |
| الوصف: | © 2015 The Authors. While the 12C(α,γ)16O reaction plays a central role in nuclear astrophysics, the cross section at energies relevant to hydrostatic helium burning is too small to be directly measured in the laboratory. The β-delayed α spectrum of 16N can be used to constrain the extrapolation of the E1 component of the S-factor, however, with this approach the resulting S-factor becomes strongly correlated with the assumed βα branching ratio. We have remeasured the βα branching ratio by implanting 16N ions in a segmented Si detector and counting the number of βα decays relative to the number of implantations. Our result, 1.49(5)×10-5, represents a 24% increase compared to the accepted value and implies an increase of ≈10% in the extrapolated S-factor. We thank James de Boer and Karsten Riisager for helpful dis-cussion on the R-matrix analysis. OSK acknowledges support from the Villum Foundation. We also acknowledge financial support from the European Research Council under ERC starting grant LOBENA, No. 307447, the Stichting voor Fundamenteel Onderzoek der Materie (FOM) under Programme 114 (TRIμP), the European Commission within the Seventh Framework Programme through IA-ENSAR (contract no. RII3-CT-2010-262010), FWO-Vlaanderen (Belgium), GOA/2010/010 (BOF KU Leuven) and the Interuniver-sity Attraction Poles Programme initiated by the Belgian Science Policy Office (BriX network P7/12). ispartof: Physics Letters B vol:752 pages:293-301 status: published |
| وصف الملف: | application/pdf |
| تدمد: | 0370-2693 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04443e1ad003c8d879902f11fbbc7b73 https://doi.org/10.1016/j.physletb.2015.11.047 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....04443e1ad003c8d879902f11fbbc7b73 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 03702693 |
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