Mössbauer Magnets and Bucking Coils

Some experiments such as Mössbauer effect measurements require that the magnetic field be reduced close to one end of a magnet. This is readily accomplished by winding a bucking coil on the end of a magnet. A typical field profile peaks slightly below the center of the solenoid and decreases along the axis in the Z direction (Compensated Region). The field near the end of the bucking coil is reduced to a minimal level (and can be reversed slightly in the negative direction). A minor peak normally occurs before the field decreases monotonically. The field in the compensated region is typically reduced to 30 to 100 gauss.

Bucking coils can be incorporated into solenoids, split coils, or nuclear demagnetization magnets.

To assist in selecting a magnet for your application, please be prepared to provide your AMI Technical Sales Representative with the information in the table below. For more complex field profiles or requirements, please contact AMI.

Main Coil Strength: ________ Tesla
Clear Bore: ________ inches
Main Field Homogeneity: ±_______ % in 1 cm DSV
Maximum Compensated Field Region: ________ gauss
Compensated Field Position**: Z(max) ________ inches
Z(min) ________ inches
Special Requirements:

** Z=0 is defined as the physical center of the main solenoid.

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