title: The average energy required to produce an ion pair in argon, nitrogen, and air for 1- to 5-MeV alpha particles.
mesh_terms: D000388:Air; D000512:Alpha Particles / Q000295:instrumentation*; D001128:Argon; D004735:Energy Transfer; D009584:Nitrogen; D011059:Polonium
chemical_list: D001128:Argon; D011059:Polonium; D009584:Nitrogen