Spectroscopic study of 26Si for application to nova gamma-ray emission.
N. de Sereville
(1)
,
M. Assié
(1)
,
I. Bahrini
(1)
,
D. Beaumel
(1)
,
M. Chabot
(1)
,
A. Coc
(2)
,
I. Deloncle
(2)
,
F. de Oliveira
(3)
,
J. Duprat
(2)
,
M. Ferraton
(1)
,
S. Fortier
(1)
,
S. Franchoo
(1)
,
S. Giron
(1)
,
F. de Grancey
(3)
,
F. Hammache
(1)
,
C. Hammadache
(2)
,
J. Kiener
(2)
,
L. Lamia
,
M. Lebois
(1)
,
A. Lefebvre-Schuhl
(2)
,
F. Marechal
(1)
,
A. Matta
(1)
,
B. Mouginot
(1)
,
C. Petrache
(1)
,
G. Pizzonne
,
S. Romano
,
Pierre Roussel
(1)
,
J. A. Scarpaci
(1)
,
I. Stefan
(1)
,
J.C. Thomas
(3)
,
D. Verney
(1)
,
Muriel Fallot
(4)
,
Lydie Giot
(4)
M. Assié
- Function : Author
- PersonId : 179830
- IdHAL : marlene-assie
- ORCID : 0000-0002-1876-6296
- IdRef : 130690139
I. Deloncle
- Function : Author
- PersonId : 742159
- IdHAL : isabelle-deloncle
- IdRef : 19712898X
J. Duprat
- Function : Author
- PersonId : 739924
- IdHAL : jean-duprat
- ORCID : 0000-0001-7408-3089
- IdRef : 116736127
L. Lamia
- Function : Author
A. Matta
- Function : Author
- PersonId : 740837
- IdHAL : adrien-matta
- ORCID : 0000-0002-0331-1563
- IdRef : 158499972
G. Pizzonne
- Function : Author
S. Romano
- Function : Author
J. A. Scarpaci
- Function : Author
- PersonId : 742300
- IdHAL : jean-antoine-scarpaci
- IdRef : 087196514
I. Stefan
- Function : Author
- PersonId : 179537
- IdHAL : iulian-stefan
- ORCID : 0000-0001-7923-8908
- IdRef : 114633401
J.C. Thomas
- Function : Author
- PersonId : 738662
- IdHAL : jean-charles-thomas
- ORCID : 0000-0001-6618-9772
Muriel Fallot
- Function : Author
- PersonId : 177532
- IdHAL : muriel-fallot
- ORCID : 0000-0001-8650-2578
- IdRef : 070163537
Lydie Giot
- Function : Author
- PersonId : 173004
- IdHAL : lydie-giot
- ORCID : 0000-0001-9764-5005
- IdRef : 077686071
Abstract
26Al was the first cosmic radioactivity ever detected in the galaxy. Its nucleosynthesis in novae outbursts is still uncertain mainly due to the lack of nuclear information concerning the 25Al(p,g )26Si reaction. We report here on a neutron-gamma coincidence measurement of the 24Mg(3He,ng )26Si reaction performed at the Orsay TANDEM facility aiming at the spectroscopic study of astrophysically important 26Si states. A new level in the Gamow peak is observed at EX = 5:888 MeV and the gamma-ray decay scheme of all levels below the proton threshold is confirmed.