"Gamma siā-sòaⁿ" pán-pún chi-kan bô-kāng--ê tē-hng

[[ImageFile:Cobalt_60.png|thumb|240px|⁶⁰Co soe-piàn ê koè-têng ē sán-seng 1.17 MeV and 1.33 MeV ê γγ siā-soàⁿ.]]

'''Gamma siā-soàⁿ''' (gamma ray) tiāⁿ siá chò '''γγ siā-soàⁿ''', sī [[tiān-chû-pho]] ê 1 chióng hêng-sek, tī [[hòng-siā-sèng soe-piàn]] (radioactive decay) he̍k-chiá [[tiān-chú chiàⁿ-chú bia̍t-bô]] (electron-positron annihilation) chit chióng [[hu̍t-chú]] ia̍h [[chhù-goân-chú]] hoán-èng ê koè-têng--nih lóng ē sán-seng.

γγ siā-soàⁿ [[pîn-lu̍t]] chin koân, iok-liōng 10²⁰[[Hz]] kaù 10²²[[Hz]], [[pho-tn̂g]] chin té, iok-liōng 10^-14[[m]] kaù 10^-12[[m]], [[lêng-liōng]] chin toā, ē-tit thàng koè [[kim-sio̍k]] ham [[âng-mn̂g-thô͘]].