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Supermassive magnetic monopoles flux from the oldest mica samples

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Publication Date
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DOI: 10.1209/0295-5075/12/1/005
OAI: oai:inspirehep.net:302418
Source
INSPIRE-HEP
Keywords
  • Experiment-Hep
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Abstract

Here we report the results of an experimental search for the stored monopole tracks in our 9  108 y old mica sample. We selected a few pieces of mica sample etched with hydrofluoric acid and scanned in transmitted light under polarizing microscope to search for etch pits originating from the lattice defects produced in mica due to elastic nuclear collisions of nucleus-monopole boundpair. The absence of any etch pit characterizing monopole track in our most oldest sample searched so far sets an upper limit of 10-16 to 10-18 cm-2 sr-1 s-1 on the flux of the supermassive monopoles having velocity 3  10-4 to 1.5  10-3 c, which is slightly lower than the results of Price et al.

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