镜像核13N-13C和15N-15O中的激发态晕或皮
경상핵13N-13C화15N-15O중적격발태훈혹피
Halo or Skin in the Excited States of Two Couples of Mirror Nuclei 13N-13C and 15N-15O
  • 万方数据
    原子核物理评论 원자핵물리평론
    Nuclear Physics Review
    2005年 1期 11-16 ,共6页

    陈金根%蔡翔舟%沈文庆%马余刚%任中洲%蒋潍舟%钟晨%魏义彬%郭威%周星飞%马国亮%王鲲

    진금근%채상주%침문경%마여강%임중주%장유주%종신%위의빈%곽위%주성비%마국량%왕곤

    镜像核%激发态%相对论平均场%晕(皮) 鏡像覈%激髮態%相對論平均場%暈(皮)
    경상핵%격발태%상대론평균장%훈(피)
    mirror nuclei%excited state%relativistic mean field%halo (skin)
    用非线性相对论平均场对两对镜像核13N-13C和15N-15O进行了研究.发现无论在基态还是激发态, 用两套参数所得的结合能都跟实验值很接近.计算结果显示13N的第一激发态(2s1/2)和第三激发态(1d5/2)各存在一个非束缚的质子晕, 而13C的第三激发态(1d5/2)存在一个弱束缚的中子皮.另外研究表明, 在另一对镜像核15N-15O的第二激发态(2s1/2)和第一激发态(2s1/2)分别存在一个中子晕和质子皮.
    용비선성상대론평균장대량대경상핵13N-13C화15N-15O진행료연구.발현무론재기태환시격발태, 용량투삼수소득적결합능도근실험치흔접근.계산결과현시13N적제일격발태(2s1/2)화제삼격발태(1d5/2)각존재일개비속박적질자훈, 이13C적제삼격발태(1d5/2)존재일개약속박적중자피.령외연구표명, 재령일대경상핵15N-15O적제이격발태(2s1/2)화제일격발태(2s1/2)분별존재일개중자훈화질자피.
    Properties of two pairs of mirror nuclei 13N-13C and 15N-15O are investigated by using the nonlinear relativistic mean-field theory. It is found that all the calculated binding energies with two different parameter sets are very close to the experimental ones for both the ground states and the excited states. The calculations show that the first excited state (2s1/2) and the third excited state (1d5/2) in 13N are both unbound resonances with proton halo structure, whereas the third excited state (1d5/2) in 13C is weakly bound with a neutron skin. It is also predicted that there has a proton halo in the second excited state (2s1/2) of 15N as well as a neutron skin in the first excited state (2s1/2) of 15O.
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