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Experimental study of the astrophysical γ -process reaction Xe 124 (α,γ) Ba 128
(2016-10-10)
Background: The synthesis of heavy, proton rich isotopes in the astrophysical γ process proceeds through photodisintegration reactions. For the improved understanding of the process, the rates of the involved nuclear ...
Be 7 (n,α) He 4 Reaction and the Cosmological Lithium Problem : Measurement of the Cross Section in a Wide Energy Range at n-TOF at CERN
(2016-10-03)
The energy-dependent cross section of the Be7(n,α)He4 reaction, of interest for the so-called cosmological lithium problem in big bang nucleosynthesis, has been measured for the first time from 10 meV to 10 keV neutron ...
Recent results in nuclear astrophysics at the n-TOF facility at CERN
(2016-09-11)
The neutron time of flight (n-TOF) facility at CERN is a spallation source characterized by a white neutron spectrum. The innovative features of the facility, in the two experimental areas, (20 m and 185 m), allow for an ...
The role of fission on neutron star mergers and its impact on the r-process peaks
(American Institute of Physics (AIP), 2016-06-21)
The comparison between observational abundance features and those obtained from nucleosynthesis predictions of stellar evolution and/or explosion simulations can scrutinize two aspects: (a) the conditions in the astrophysical ...
Theory considerations for nucleosynthesis beyond Fe with special emphasis on p-nuclei in massive stars
(American Institute of Physics (AIP), 2016-06-21)
Nucleosynthesis of heavy elements requires the use of different experimental and theoretical methods to determine astrophysical reaction rates than light element nucleosynthesis. Additionally, there are also larger ...
Integral measurement of the 12C(n, p)12B reaction up to 10 GeV
(2016-04-22)
The integral measurement of the 12C(n, p)12B reaction was performed at the neutron time-of-flight facility n_TOF at CERN. The total number of 12B nuclei produced per neutron pulse of the n_TOF beam was determined using the ...
Towards the high-accuracy determination of the 238U fission cross section at the threshold region at CERN - N-TOF
(EDP Sciences, 2016-03-15)
The 238U fission cross section is an international standard beyond 2 MeV where the fission plateau starts. However, due to its importance in fission reactors, this cross-section should be very accurately known also in the ...
Fission Fragment Angular Distribution measurements of 235U and 238U at CERN n-TOF facility
(EDP Sciences, 2016-03-15)
Neutron-induced fission cross sections of 238U and 235U are used as standards in the fast neutron region up to 200 MeV. A high accuracy of the standards is relevant to experimentally determine other neutron reaction cross ...
Hybrid method to resolve the neutrino mass hierarchy by supernova (anti)neutrino induced reactions
(2016-02-03)
We introduce a hybrid method to determine the neutrino mass hierarchy by simultaneous measurements of responses of at least two detectors to antineutrino and neutrino fluxes from accretion and cooling phases of core-collapse ...
Current hot questions on the s process in AGB stars
(2016-01-05)
Asymptotic giant branch (AGB) stars are a main site of production of nuclei heavier than iron via the s process. In massive (>4 M⊙) AGB stars the operation of the 22Ne neutron source appears to be confirmed by observations ...