"the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay"@en-us . "0.0937738"^^ . . "112781027"@en-us . . . . "0.0"^^ . "0"^^ . "0.0157302"^^ . . "0.0916668"^^ . "0.0"^^ . "0"^^ . "0.0"^^ . . . "0.779294"^^ . "radioactivity"@en-us . . "0.0195354"^^ . "radiation"^^ . "13545184-n"^^ . "radiation"@en-us . . . "113545184"^^ . .