Title :
Research of long-time stability of an atomic magnetic resonance standard system for reproduction of direct current and magnetic flux density
Author :
Shifrin, V.Ya. ; Khorev, N. ; Shilov, A.E. ; Park, P.G.
Author_Institution :
Mendeleyev Inst. for Metrol., St. Petersburg, Russia
Abstract :
At the D. I. Mendeleyev Institute for Metrology (VNIIM) a standard system using helium-4 atomic magnetic resonance has operated during the past 10 years for reproduction of low magnetic flux density and direct current. Research of the base elements of this system for the last 5 years have shown that non-stability of the coil-constant of a standard solenoid and nonlinearity of the frequency-to-current conversion coefficient of a quantum system for current reproduction in the range 0.1 A to 1 A are less than 1 /spl times/ 10/sup -7/.
Keywords :
atomic beam magnetic resonance; calibration; electric current measurement; magnetic flux; magnetometers; measurement standards; solenoids; /sup 4/He-Cs; 0.1 to 1 A; VNIIM; atomic magnetic resonance standard system; coil-constant; direct current; frequency-to-current conversion coefficient; helium-4; long-time stability; magnetic flux density; solenoid; Atomic measurements; Current measurement; Electrical resistance measurement; Magnetic field measurement; Magnetic flux density; Magnetic resonance; Magnetometers; Measurement standards; Solenoids; Stability;
Conference_Titel :
Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-7242-5
DOI :
10.1109/CPEM.2002.1034698
