N. Kivel
Neutron spectroscopy of 26 Mg states: Constraining the stellar neutron source 22 Ne( α , n ) 25 Mg
Kivel, N.; Karadimos, D.; Käppeler, F.; Kadi, Y.; Krti?ka, M.; Kopecky, S.; Kokkoris, M.; Koehler, P.; Leal-Cidoncha, E.; Langer, C.; Lampoudis, C.; Kroll, J.; Losito, R.; Lo Meo, S.; Leeb, H.; Lederer, C.; Mastromarco, M.; Martínez, T.; Marganiec, J.; Manousos, A.; Mallick, A.; Musumarra, A.; Mondelaers, W.; Mirea, M.; Mingrone, F.; Mengoni, A.; Mendoza, E.; Praena, J.; Plompen, A.; Piersanti, L.; Pignatari, M.; Perkowski, J.; Pavlik, A.; Paradela, C.; Schillebeeckx, P.; Saxena, A.; Sarmento, R.; Sabaté-Gilarte, M.; Rubbia, C.; Riego, A.; Reifarth, R.; Rauscher, T.; Žugec, P.; Wright, T.; Wynants, R.; Weiß, C.; Weigand, M.; Ware, T.; Wallner, A.; Vlastou, R.; Vlachoudis, V.; Vermeulen, M.J.; Ventura, A.; Vaz, P.; Variale, V.; Van Rijs, I.; Vannini, G.; Valenta, S.; Massimi, C.; Altstadt, S.; Andrzejewski, J.; Audouin, L.; Barbagallo, M.; Bécares, V.; Bečvář, F.; Belloni, F.; Berthoumieux, E.; Billowes, J.; Bisterzo, S.; Bosnar, D.; Brugger, M.; Calviani, M.; Calviño, F.; Cano-Ott, D.;...
Authors
D. Karadimos
F. Käppeler
Y. Kadi
M. Krti?ka
S. Kopecky
M. Kokkoris
P. Koehler
E. Leal-Cidoncha
C. Langer
C. Lampoudis
J. Kroll
R. Losito
S. Lo Meo
H. Leeb
C. Lederer
M. Mastromarco
T. Martínez
J. Marganiec
A. Manousos
A. Mallick
A. Musumarra
W. Mondelaers
M. Mirea
F. Mingrone
A. Mengoni
E. Mendoza
J. Praena
A. Plompen
L. Piersanti
M. Pignatari
J. Perkowski
A. Pavlik
C. Paradela
P. Schillebeeckx
A. Saxena
R. Sarmento
M. Sabaté-Gilarte
C. Rubbia
A. Riego
R. Reifarth
T. Rauscher
P. Žugec
T. Wright
R. Wynants
C. Weiß
M. Weigand
T. Ware
A. Wallner
R. Vlastou
V. Vlachoudis
M.J. Vermeulen
A. Ventura
P. Vaz
V. Variale
I. Van Rijs
G. Vannini
S. Valenta
C. Massimi
S. Altstadt
J. Andrzejewski
L. Audouin
M. Barbagallo
V. Bécares
F. Bečvář
F. Belloni
E. Berthoumieux
J. Billowes
S. Bisterzo
D. Bosnar
M. Brugger
M. Calviani
F. Calviño
D. Cano-Ott
C. Carrapiço
D. M. Castelluccio
F. Cerutti
E. Chiaveri
L. Cosentino
M. Chin
G. Clai
N. Colonna
G. Cortés
M. A. Cortés-Giraldo
S. Cristallo
M. Diakaki
C. Domingo-Pardo
I. Duran
R. Dressler
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
S. Kopecky
M. Krti?ka
J. Kroll
C. Lampoudis
C. Langer
E. Leal-Cidoncha
C. Lederer
H. Leeb
L. S. Leong
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
M. Mirea
W. Mondelaers
A. Musumarra
C. Paradela
A. Pavlik
J. Perkowski
M. Pignatari
L. Piersanti
A. Plompen
J. Praena
J. M. Quesada
T. Rauscher
R. Reifarth
A. Riego
M. S. Robles
C. Rubbia
M. Sabaté-Gilarte
R. Sarmento
A. Saxena
P. Schillebeeckx
Abstract
This work reports on accurate, high-resolution measurements of the 25 Mg(n,γ) 26 Mg and 25 Mg(n,tot) cross sections in the neutron energy range from thermal to about 300 keV, leading to a significantly improved 25 Mg(n,γ) 26 Mg parametrization. The relevant resonances for n+ 25 Mg 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 26 Mg. With this information experimental upper limits of the reaction rates for 22 Ne(α,n) 25 Mg and 22 Ne(α,γ) 26 Mg 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 ⊙ .
Citation
Kivel, N., Karadimos, D., Käppeler, F., Kadi, Y., Krtička, M., Kopecky, S., …Schillebeeckx, P. (2017). Neutron spectroscopy of 26 Mg states: Constraining the stellar neutron source 22 Ne( α , n ) 25 Mg. Physics letters. B, 768, 1-6. https://doi.org/10.1016/j.physletb.2017.02.025
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 12, 2017 |
Online Publication Date | Feb 16, 2017 |
Publication Date | May 10, 2017 |
Deposit Date | Jun 28, 2018 |
Publicly Available Date | Mar 28, 2024 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Print ISSN | 0370-2693 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 768 |
Pages | 1-6 |
DOI | https://doi.org/10.1016/j.physletb.2017.02.025 |
Keywords | s Process; α+²²Ne; Neutron spectroscopy |
Public URL | https://hull-repository.worktribe.com/output/556659 |
Publisher URL | https://www.sciencedirect.com/science/article/pii/S0370269317301260 |
Related Public URLs | http://eprints.whiterose.ac.uk/115675/ |
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