Ideguchi E, Sarantites D G, Reviol W, Afanasjev A V, Devlin M, Baktash C, Janssens R V, Rudolph D, Axelsson A, Carpenter M P, Galindo-Uribarri A, LaFosse D R, Lauritsen T, Lerma F, Lister C J, Reiter P, Seweryniak D, Weiszflog M, Wilson J N
Chemistry Department, Washington University, St. Louis, Missouri 63130, USA.
Phys Rev Lett. 2001 Nov 26;87(22):222501. doi: 10.1103/PhysRevLett.87.222501. Epub 2001 Nov 8.
A rotational band with seven gamma-ray transitions between states with spin 2 Planck's constant and 16 Planck's constant has been observed in the doubly magic, self-conjugate nucleus (40)(20)Ca(20). The measured transition quadrupole moment of 1.80(+0.39)(-0.29)eb indicates a superdeformed shape with a deformation beta(2) = 0.59(+0.11)(-0.07). The features of this band are explained by cranked relativistic mean field calculations to arise from an 8-particle 8-hole excitation.
在双幻、自共轭核(^{40}{20}Ca{20})中观测到一个转动带，其在自旋为(2\hbar)和(16\hbar)的态之间有七个伽马射线跃迁。测量得到的跃迁四极矩为(1.80(+0.39)(-0.29)eb)，表明其为超形变形状，形变参数(\beta_2 = 0.59(+0.11)(-0.07))。通过推转相对论平均场计算对该转动带的特征进行了解释，其源于一个(8)粒子(8)空穴激发。
