Experimental neutron capture data of 58Ni from the CERN n_TOF facility
Visualitza/Obre
Experimental neutron capture data of 58Ni from the CERN n_TOF facility (1,222Mb) (Accés restringit)
Sol·licita una còpia a l'autor
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Cita com:
hdl:2117/21392
Tipus de documentArticle
Data publicació2014-01-09
Condicions d'accésAccés restringit per política de l'editorial
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
The 58Ni(n,γ ) cross section has been measured at the neutron time of flight facility n_TOF at CERN, in
the energy range from 27 meV up to 400 keV. In total, 51 resonances have been analyzed up to 122 keV.
Maxwellian averaged cross sections (MACS) have been calculated for stellar temperatures of kT = 5–100 keV
with uncertainties of less than 6%, showing fair agreement with recent experimental and evaluated data up to
kT = 50 keV. The MACS extracted in the present work at 30 keV is 34.2 ± 0.6stat ± 1.8sys mb, in agreement
with latest results and evaluations, but 12% lower relative to the recent KADoNIS compilation of astrophysical cross sections.When included in models of the s-process nucleosynthesis in massive stars, this change results in
a 60% increase of the abundance of 58Ni, with a negligible propagation on heavier isotopes. The reason is that,
using both the old or the new MACS, 58Ni is efficiently depleted by neutron captures.
CitacióZugec, P. [et al.]. Experimental neutron capture data of 58Ni from the CERN n_TOF facility. "Physical review C", 09 Gener 2014, vol. 89, núm. 1, p. 014605-1-014605-9.
ISSN0556-2813
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
PhysRevC.89.014605.pdf | Experimental neutron capture data of 58Ni from the CERN n_TOF facility | 1,222Mb | Accés restringit |