ᵻlˈɛktɹɑːn bˈiːmz kæn biː dʒˈɛnɚɹˌeɪɾᵻd baɪ θˌɜːmɪˈɑːnɪk ɪmˈɪʃən, fˈiːld ᵻlˈɛktɹɑːn ɪmˈɪʃən ɔːɹ ðɪ ænˈɑːdɪk ˈɑːɹk mˈɛθəd.
Electron beams can be generated by thermionic emission, field electron emission or the anodic arc method.