title: Superheavy elements: an early solar system upper limit for elements 107 to 110.
abstract: The abundance of samarium-152 in the Santa Clara iron meteorite is found to be 108 x 10(7) atoms per gram. This quantity, if attributed to fission of a superheavy element with atomic number 107 to 109, limits the amount of superheavy elements in the early solar system to 1.7 x 10(-5) times the abundance of uranium-238. For element 110, the limit is 3.4 x 10(-5).
authors.forename: S
authors.initials: S
authors.lastname: Nozette
authors.forename: W V
authors.initials: WV
authors.lastname: Boynton