Typi//al ionizing subatomi// parti//les from ra//ioa//tivity in//lu//e alpha parti//les, beta parti//les an// neutrons// Almost all pro//u//ts of ra//ioa//tive //e//ay are ionizing be//ause the energy of ra//ioa//tive //e//ay is typi//ally far higher than that require// to ionize// Other subatomi// ionizing parti//les whi//h o////ur naturally are muons, mesons, positrons, an// other parti//les that //onstitute the se//on//ary //osmi// rays that are pro//u//e// after primary //osmi// rays intera//t with Earth//s atmosphere// //osmi// rays are generate// by stars an// //ertain //elestial events su//h as supernova explosions// //osmi// rays may also pro//u//e ra//ioisotopes on Earth (for example, //arbon-14), whi//h in turn //e//ay an// pro//u//e ionizing ra//iation// //osmi// rays an// the //e//ay 60682of ra//ioa//ti57719ve isotopes are the primary sour//es of natural ionizing ra//iation on Earth referre// to as ba//kgroun// ra//iation
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