Open AccessInvestigation of the 7Li(p,n) neutron fields at high energies
Author(s) -
Benjamin Brückner,
P. Erbacher,
K. Göbel,
T. Heftrich,
Kafa Khasawneh,
D. Kurtulgil,
C. Langer,
R. Nolte,
Markus Reich,
R. Reifarth,
M. Weigand,
M. Wiescher,
M. Volknandt
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1668/1/012003
Subject(s) - neutron , physics , proton , nuclear physics , r process , spectral line , s process , bonner sphere , neutron capture , neutron stimulated emission computed tomography , nuclear reaction , neutron cross section , neutron temperature , atomic physics , nucleosynthesis , astronomy
The neutron activation method has been proven to be a well-suited tool for the investigation of neutron capture cross sections relevant for the main component of the s-process. Neutrons produced via the 7 Li(p,n) 7 Be reaction at a proton energy of E p = 1912 keV can be used to recreate a quasi-stellar neutron energy distribution mimicking the astrophysical s-process scenario at k B T = 25keV. For the weak s-process, which takes place in massive stars at temperatures between k B T = 25 keV and k B T = 90 keV, the activation method has not yet been successful in recreating quasi-stellar neutron spectra. However, simulations show that the activation method can be improved in order to recreate a quasi-stellar neutron spectrum at different energies by linear combination of different neutron spectra. In order to verify these simulations the neutron fields of the reaction have to be measured at different proton energies.