In these exercises, students will study events in which a muon coming to rest inside the MINERvA detector subsequently undergoes a radioactive decay in mere microseconds.

Muon Radioactive Decay

Students learn how to identify radioactive decay events and get a feel for the random nature of the decay process. Later, a more quantitative analysis can measure the half-life of the muon. Students also examine the energies of the electrons to gain insight into the decay mechanism.

Arachne Event Display

The sample event above shows a muon beta decay. The second "time slice" in this event contains a muon skidding to a halt in the material of the MINERvA detector. The third time slice reveals a 35 Mega-electron-Volt electron emmitted by the muon when it decays radioactively 2.45 microseconds after it stopped in the detector.

This exercise provides a library of these decay events for your students to analyze.

Analyzing the Muon Lifetime

Essential Questions

Activities and Resources

Radioactive decay of muons

Essential Questions

Activities and Resources

Advanced: The Mechanics of Muon Decay

Essential Questions

Activities and Resources