1 results listed
The contribution of neutron scattering to progress
in the physics of magnetism is very large and important,
especially its contribution to the understanding of magnetism
in metals. The spin wave dispersion relations of Fe and Ni were
measured by neutron scattering techniques, around 1970 and
the results were in good agreement with the band theory based
on a generalized random phase approximation (RPA).
Therefore, band theory can explain the magnetism in metals
not only for the ground state but also for the excited states.
Otherwise, the high strength and hardness properties, cobaltbased alloys have been used as structural materials in nuclear
reactors and activated cobalt materials in corrosion products
are significant in determination of dose levels during
maintenance after a coolant leak at a nuclear fusion reactor.
In this study, we have been investigated some nuclear and
magnetic properties of Fe-Co and Co-Ni alloys. Magnetic
behaviours of these alloys can be investigated by Monte Carlo
simulations for different and predefined exchange energies or
coupling strengths. For ferromagnetic interactions,
magnetization and susceptibility curves of the alloys have been
computed with Monte Carlo method based on classical
Heisenberg model. Magnetic characters of these type of alloys
can be reached by neutron scattering experiments as well. The
cross sections values for 59Co(n,p)59Fe and 59Co(p,n)59Ni
nuclear reactions have been calculated with TALYS code and
have been compared with the available experimental cross
section data reported in the literature. Also, the half-lives of
these transitions have been calculated in the proton-neutron
Quasi Particle Random Phase Approximation (pn-QRPA)
framework. The obtained results are compared with the
experimental data and the other theoretical values.
International Iron & Steel Symposium
UDCS
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Rıdvan Baldık
Ulvi Kanbur