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  • C. Massimi
  • S. Altstadt
  • J. Andrzejewski
  • L. Audouin
  • M. Barbagallo
  • V. Bécares
  • F. Bečvář
  • F. Belloni
  • E. Berthoumieux
  • J. Billowes
  • S. Bisterzo
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  • M. Brugger
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  • F. Calviño
  • D. Cano-Ott
  • C. Carrapiço
  • D.M. Castelluccio
  • F. Cerutti
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  • L. Cosentino
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  • N. Colonna
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  • M.A. Cortés-Giraldo
  • S. Cristallo
  • M. Diakaki
  • C. Domingo-Pardo
  • I. Duran
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  • C. Eleftheriadis
  • A. Ferrari
  • P. Finocchiaro
  • K. Fraval
  • S. Ganesan
  • A.R. García
  • G. Giubrone
  • I.F. Gonçalves
  • E. González-Romero
  • E. Griesmayer
  • C. Guerrero
  • F. Gunsing
  • A. Hernández-Prieto
  • D.G. Jenkins
  • E. Jericha
  • Y. Kadi
  • F. Käppeler
  • D. Karadimos
  • N. Kivel
  • P. Koehler
  • M. Kokkoris
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  • M. Krtička
  • J. Kroll
  • C. Lampoudis
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  • E. Leal-Cidoncha
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  • S. Lo Meo
  • R. Losito
  • A. Mallick
  • A. Manousos
  • J. Marganiec
  • T. Martínez
  • P.F. Mastinu
  • M. Mastromarco
  • E. Mendoza
  • A. Mengoni
  • P.M. Milazzo
  • F. Mingrone
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  • C. Paradela
  • A. Pavlik
  • J. Perkowski
  • M. Pignatari
  • L. Piersanti
  • A. Plompen
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  • J.M. Quesada
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  • M.S. Robles
  • C. Rubbia
  • M. Sabaté-Gilarte
  • R. Sarmento
  • A. Saxena
  • P. Schillebeeckx
  • S. Schmidt
  • D. Schumann
  • G. Tagliente
  • J.L. Tain
  • D. Tarrío
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  • A. Tsinganis
  • S. Valenta
  • G. Vannini
  • I. Van Rijs
  • V. Variale
  • P. Vaz
  • A. Ventura
  • M.J. Vermeulen
  • V. Vlachoudis
  • R. Vlastou
  • A. Wallner
  • T. Ware
  • M. Weigand
  • C. Weiß
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  • P. Žugec
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Original languageEnglish
Number of pages6
Pages (from-to)1-6
JournalPhysics Letters B
Journal publication date10 May 2017
Volume768
Early online date16 Feb 2017
DOIs
Publication statusPublished - 10 May 2017

Abstract

This work reports on accurate, high-resolution measurements of the 25Mg(n,γ)26Mg and 25Mg(n,tot) cross sections in the neutron energy range from thermal to about 300 keV, leading to a significantly improved 25Mg(n,γ)26Mg parametrization. The relevant resonances for n+25Mg were characterized from a combined R-matrix analysis of the experimental data. This resulted in an unambiguous spin/parity assignment of the corresponding excited states in 26Mg. With this information experimental upper limits of the reaction rates for 22Ne(α,n)25Mg and 22Ne(α,γ)26Mg were established, potentially leading to a significantly higher (α,n)/(α,γ) ratio than previously evaluated. The impact of these results has been studied for stellar models in the mass range 2 to 25 M⊙.

Notes

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. Open Access funded by SCOAP³ - Sponsoring Consortium for Open Access Publishing in Particle Physics. C. Massimi, et al, 'Neuron spectroscopy of 26Mg states: Constraining the stellar neutron source 22Ne (a,n) 25Mg', Physics Letters B, Vol. 768, first published online 16 February 2017. The version of record is available online at doi: http://dx.doi.org/10.1016/j.physletb.2017.02.025 © 2017 The Authors. Published by Elsevier B. V.

ID: 11223981