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In the A=70-80 mass region, a lot of complicated phenomena of nuclear structure were found, such as large shape deformation, shape coexistence, shape transition, signature splitting, signature inversion and so on. 74As nucleus, composed of 33 protons and 40 neutrons, is in the midst of a trend that the shapes of nuclei are transformed from spherical shape to large deformed shape. Therefore, 74As is a good candidate for us to study the nuclear structure in this mass region.
In the A = 70-80 mass region, a lot of complicated phenomena of nuclear structure were found, such as large shape deformation, shape coexistence, shape transition, signature splitting, signature inversion and so on. 74As nucleus, composed of 33 protons and 40 neutrons, is in the midst of a trend that the shapes of nuclei are transformed from spherical shapes to large deformed shapes. Thus, 74As is a good candidate for us to study the nuclear structure in this mass region.