Magnetic Form Factor of NpAs sub 2 : A Crystal Field Wave Function for 5F Electrons.

摘要

Neptunium magnetic form factor measurements in the ferromagnetic phase of NpAs sub 2 (T = 4.2 K, H = 4.6 T) are analysed under different assumptions: Np exp 3+ , Np exp 4+ or Np exp 5+ , with a free ion wave-function (Russel-Saunders and intermediate coupling scheme) or with a Crystal Field Wave function for 5f electrons: sub(m)sup( sigma )asub(m)asub(m)/J,m>. The experimental results are compatible with either a 3+ or 4+ state. (Atomindex citation 14:762739)