Pregled bibliografske jedinice broj: 863601
Neutron spectroscopy of 26Mg states: Constraining the stellar neutron source 22Ne(α, n)25Mg
Neutron spectroscopy of 26Mg states: Constraining the stellar neutron source 22Ne(α, n)25Mg // Physics letters. B, 768 (2017), 1-6 doi:10.1016/j.physletb.2017.02.025 (međunarodna recenzija, članak, znanstveni)
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Naslov
Neutron spectroscopy of 26Mg states: Constraining the stellar neutron source 22Ne(α, n)25Mg
Autori
Massimi, C. ; ... ; Bosnar, Damir ; ... ; Žugec, Petar
Izvornik
Physics letters. B (0370-2693) 768
(2017);
1-6
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
s Process, α+22Ne, Neutron spectroscopy
Sažetak
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.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
