标题： 碳-14长寿命之谜的新解决方案 显示英文标题

标题： New solution to the puzzle of the long lifetime of 14C

摘要： 一种新的集群模型解决方案用于解决长期存在的核结构问题，即描述14C异常长的半衰期。 14O到14N状态的相关β衰变数据，14N中低能正宇称状态之间的γ衰变数据，以及从14N的弹性与非弹性磁偶极子电子散射数据都由该模型非常准确地描述。 A=14系统的β谱形状也由该模型很好地再现。 该模型引入了由于三核子和四核子相互作用产生的四核子四面体对称空间相关性，这为集群提供了高度的SU(4)单态结构，并为双幻数16O基态提供了四面体固有形状。 这里首次获得了14N基态的大四极矩，这是由于模型中固有的几乎100%的d波氘核类似空穴集群结构所致。 显示英文摘要

摘要： A new cluster model solution to the long standing nuclear structure problem of describing the anomalously long lifetime of 14C is presented. Related beta-decay data for 14O to states in 14N, gamma decay data between low lying positive parity states in 14N and the elastic and inelastic magnetic dipole electron scattering from 14N data are all shown to be very accurately described by the model. The shapes of the beta spectra for the A=14 system are also well reproduced by the model. The model invokes four-nucleon tetrahedral symmetric spatial correlations arising from three- and four-nucleon interactions which yields a high degree of SU(4) singlet structure for the clusters and a tetrahedral intrinsic shape for the doubly magic 16O ground state. The large quadrupole moment of the 14N ground state is obtained here for the first time and arises because of the almost 100% d-wave deuteron-like-hole cluster structure inherent in the model.