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ky525252(金币+20, 翻译EPI+1):谢谢好心人 2010-10-30 14:05:45
Physical magnetic rotation of the proposal is to turn the relay nuclei backbending phenomenon superdeformed rotational band, followed by another major achievement. With the usual high-spin states and superdeformed rotational band is different from magnetic rotational band usually occurs in nearly spherical or weakly deformed nucleus. the magnetic rotational band, is the magnetic dipole moment in the rotation, rather than the usual electric quadrupole rotation. magnetic dipole moment comes from a small number of protons - particles (or holes) and neutron - hole (or particles) between the coupling and the rotation around the total angular momentum. In the first rotational band, proton, neutron angular momentum nearly vertical, the result of the coupling between the angular momentum vector inclined to the inertia of the spindle in the nucleus. Since the deformation of the system small, to obtain the angular momentum, the most likely outcome is that the angular momentum of protons and neutrons to move closer to each other, and little change in the direction of total angular momentum, which can form a regular rotational spectra. Since the angular momentum as protons and neutrons a pair of scissors are closed, so vividly described as "scissors with." However, unlike in the rotating deformed nucleus formed by the normal rotation of collective belt, this pair of scissors with commonly found in nearly spherical or weakly deformed nucleus. different from the normal rotational bands (called power rotation), from the physical point of view, it is known as magnetic rotational bands. experiment, the magnetic rotational bands to be confirmed in the first time in 199Pd. At present, it has already in the 100 area, 130 area, and 200 were found the phenomenon of magnetic rotation.
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