Abstract
Recently, detections of the r-process elements have been done for several metal-deficient halo stars with metallicity of [ Fe H ] ∼ −1.5 −−3.0. They have indicated that the observed abundance pattern of heavy elements is very similar to that of the solar r-process elements for the mass region 56 < Z < 70, although the abundance of light neutron capture elements have a large scattering. We discuss the mechanism of this universality of the pattern and the possible way to set restriction to the nuclear mass models.
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