Measurement of magnetic field gradients by the hall effect Redin, Robert Danielson, G.
dc.contributor.department Ames Laboratory 2018-02-13T17:13:13.000 2020-06-29T23:18:21Z 2020-06-29T23:18:21Z 2013-11-10 1955-12-01
dc.description.abstract <p>A magnetic field gradient measuring device, which uses the Hall effect in germanium, has been constructed. The field sensitive element is a bar of germanium 1 mm by 1 mm by 12 mm with two sets of Hall leads attached 2 mm either side of its center. One hundred cycle alternating current flows in the long direction of the bar. In a magnetic field two 100 cycle Hall voltages are obtained. These voltages, which are proportional to the magnetic field strength at two points of the field 4 mm apart, are subtracted to give an output directly proportional to the magnetic field gradient. The instrument will also measure field strengths and relative gradients. The instrument was tested in a calculable magnetic field produced by step pole pieces. Gradients from 5 gauss/inch to 500 gauss/inch in magnetic fields below 5000 gauss were measured. The usefulness of the instrument is still uncertain owing to errors caused by excessive field dependence of the gradient voltage.</p>
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dc.identifier archive/
dc.identifier.articleid 1117
dc.identifier.contextkey 4809031
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_iscreports/108
dc.language.iso en
dc.relation.ispartofseries ISC-685
dc.source.bitstream archive/|||Fri Jan 14 18:28:07 UTC 2022
dc.subject.disciplines Engineering
dc.subject.disciplines Physics
dc.subject.keywords Ames Laboratory
dc.title Measurement of magnetic field gradients by the hall effect
dc.type article
dc.type.genre report
dspace.entity.type Publication
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
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