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Gamma stari

Mākslinicisks zīmējums, kas parāda gamma kvanta izstarošanu no atoma kodola

Gamma stari ir elektromagnētiskie viļņi ar viļņa garumu, kas ir mazāks kā rentgenstariem. Gamma stariem ir lielāka caurspiešanās spēja. Tos aiztur svina ekrāns un citi biezi šķēršļi. Tie veidojas atomu radioaktīvajā sabrukšanā. Gamma staru viļņa garums ir 0,01 nm un mazāks, frekvence ir lielāka par 2,42 EHz. Gamma starus var uzskatīt par augstas enerģijas fotonu — gamma kvantu — plūsmu. Gamma stari ir jonizējošais starojums. Tie ir caurspiedīgāki par alfa un bēta starojumu, taču ir mazāk jonizējoši. Gamma stari ir bīstami dzīvībai.

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Gamma stari
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