CONSIDERATIONS REGARDING THE MAGNET USED IN THE BIPM SUSCEPTOMETER
Abstract
A susceptometer developed at the Bureau International des Poids et Mesures is used by many national laboratories to determine the magnetic properties of stainless-steel mass standards. This device relies on a small, cylindrical magnet to simulate a magnetic point dipole. According to simple theoretical considerations, a) the magnetic moment of the cylindrical magnet which is used can be determined by the susceptometer itself, b) the uncertainty in the magnetic moment contributes weakly to the combined uncertainty of any measured susceptibility provided that unknowns are measured relative to a standard of similar size, and c) a cylindrical magnet whose ratio of height/diameter is 0.87 best approximates a point dipole. Experimental tests of these assertions will be presented.
Event details
- Event
- TC3 Conference 2001
- Technical Committee
- TC3
- Place
- Istanbul, TURKEY
- Time
- 17 September 2001 - 21 September 2001