From Wikipedia:

The Albuquerque Isotopes are a minor league baseball team based in Albuquerque, New Mexico. The team, which plays in the Pacific Coast League, is the Triple-A affiliate of the Los Angeles Dodgers. Albuquerque was previously represented in the PCL as a Dodgers’ affiliate by the Albuquerque Dukes, who won several PCL championships in the 1970s and 1980s before relocating to Portland, Oregon, as the Portland Beavers in 2001. The Isotopes began play in 2003 when the Calgary Cannons relocated to New Mexico.

The Isotopes’ mascot is Orbit, a big fuzzy electron.
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The fictional Springfield Isotopes from the long running TV series The Simpsons were the influence for the new name of the team. In the episode “Hungry Hungry Homer”, Homer Simpson attempts to thwart the team’s plan to move to Albuquerque. Subsequently, when an Albuquerque Tribune online survey helped the team decide its new name, “Isotopes” received 67 percent of the 120,000 votes.