1995/08/02 by H. Jeon, Hunmoo Jeon, M. Longo +1 · 35 citations
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Astrobiology #Astrophysics #Astrophysics and Cosmic Phenomena #Condensed matter physics #Geomagnetism and Paleomagnetism Studies #Magnetic monopole #Magnetism #Meteorite #Nuclear physics #Particle accelerators and beam dynamics #Physics #Quantum mechanics #Superconductivity #hep-ex
paper · pdf · doi:10.1103/physrevlett.75.1443
published in Physical Review Letters 75(8), 1443-1446 (American Physical Society) · 6 pages, rev tex, no figures
arxiv created 1995/08/02 · openalex publication_date 1995/08/21 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
There have been many searches for magnetic monopoles in flight, but few for monopoles in matter. We have searched for magnetic monopoles in meteorites, schists, ferromanganese nodules, iron ores, and other materials. The detector was a superconducting induction coil connected to a superconducting quantum interference device with a room temperature bore 15 cm in diameter. We tested a total of more than 331 kg of material including 112 kg of meteorites. We found no monopole and conclude the overall monopole /nucleon ratio in the samples is <1.2\ifmmode×\else\texttimes\fi10^\ensuremath-29 with a 90% confidence level.