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. 2011 May 9;10(7):M111.009431. doi: 10.1074/mcp.M111.009431

Fig. 7.

Fig. 7.

Ion motion within an ICR cell. A, Force affecting a charged particle moving in the homogeneous magnetic field causes the particle to assume circular trajectory. B, As the magnetic field can confine the ions only in the radial direction, no confinement exists in the axial direction along the magnetic field.