33RD INTERNATIONAL COSMIC RAY CONFERENCE, RIO DE JANEIRO 2013 THE ASTROPARTICLE PHYSICS CONFERENCE Search for superheavy elements in galactic cosmic rays

Abstract: An original method of studying chemically etched tracks of heavy nuclei in olivine from pallasite meteorites was used to obtain a charge distribution of approximately 6000 nuclei with charge more than 55 in galactic cosmic rays. Three superheavy nuclei were detected whose charge is within the range of 105 < Z < 130. Regression analysis enabled amending the charge of one of those three nuclei to 119+10−6 with the probability of 95%. Exactly such nuclei should form islands of stability; their occurrence in nature supports the validity of theoretical predictions and justifies efforts for their synthesis under the Earth conditions