Clocks, isotopes, and collaborations

Some isotopes are fussy thermometers; others are stopwatches for the early Solar System. The fun—and the work—is that the same nuclear quirks that make a laboratory spectrum interesting also decide whether a stellar model can match what we see in meteorites.

This post is a stub you can replace with a longer essay migrated from your previous site. A natural outline:

1. Why ²⁰⁵Pb—²⁰⁵Tl physics shows up in both AG-branch models and geochronology.
   
2. Why storage rings help when “rare decay” really means “rare in the lab too.”
   
3. How large collaborations keep messy datasets usable years after the beam time ends.