A combined system for generating a uniform magnetic field and its application in the investigation of Efimov physics
Yao Rui1, 2, Sun Zhen-Dong1, 2, Zhou Shu-Yu1, †, Wang Ying3, ‡, Wang Yu-Zhu1
       

(color online) The magnetic field generated by a pair of coils. (a) The magnetic field strength along the z axis. (b) The magnetic field strength along the x axis. (c) The magnetic field gradient along the z axis. (d) The magnetic field gradient along the x axis.