Alternating magnetic field linear hall thruster and alternating magnetic field linear hall propulsion method

An alternating magnetic field linear hall thruster includes a linear discharge chamber, an anode, and solenoidal coils. The anode is disposed within the linear discharge chamber and opposite to an opening of the linear discharge chamber along a first direction. The anode is used to provide an electric field. The direction of the electric field and the axial direction of each solenoidal coil are parallel to the first direction. The solenoidal coils are used to provide a magnetic field at the opening. The direction of the magnetic field is parallel to a second direction orthogonal to the first direction. The solenoidal coils include upper solenoidal coils and lower solenoidal coils. The linear discharge chamber is sandwiched between the upper solenoidal coils and the lower solenoidal coils along the second direction. The solenoidal coils are further used to make the direction of the magnetic field alternately reverse at a frequency.