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Laser-crystal sensor measures strong magnetic fields in challenging environments
Researchers at Sandia National Laboratories have patented a magneto-optical sensor, which uses a rare earth crystal and laser light to measure the strength of intense magnetic fields and electrical currents.
“We think this technology is a pretty major improvement in measuring magnetic fields,” said Israel Owens, a Sandia physicist and co-inventor of the sensor. “We think it’ll be essential especially for research in fusion, high-energy physics, and the power utilities industry. We’re really excited about where things are going.”
Dariush Azimi-Garakani, John Garnett Williams
Nuclear Technology | Volume 36 | Number 3 | December 1977 | Pages 368-378
Technical Paper | Technique | doi.org/10.13182/NT77-A31950
Articles are hosted by Taylor and Francis Online.
Fission rates have been experimentally determined in the NISUS standard fast assembly, installed on the University of London Reactor CONSORT, with a Makrofol solid-state track recorder (SSTR). The results are compared with fission chamber measurements. The fission tracks were counted by the Quantimet 720. The optical efficiency of the Makrofol SSTR was found to be (94.6 ± 0.7)% for thin deposits. The measurements of 238U/235U fission ratio with SSTR showed a discrepancy of ∼3%o compared with those of the fission chamber.
