Beta Decay of Strontium-90

90Sr → 90Y + e− + ν̄e

概要

Strontium-90 undergoes beta decay to yttrium-90 with a half-life of 28.8 years. Sr-90 is a major fission product and is biologically dangerous because it mimics calcium and concentrates in bones. Nuclear fallout from atmospheric testing deposited Sr-90 worldwide during the 1950s-60s.

参加者

役割 物質 係数 状態
反応物 Strontium Sr 1 (s)
生成物 Yttrium Y 1 (s)

日常の例

Sr-90 was detected in children's milk teeth during the nuclear testing era, leading to the 1963 Nuclear Test Ban Treaty.

産業上の重要性

Sr-90は放射性同位体熱電気転換器(RTG)、工業用厚さ計に使用され、娘核種のY-90はがん治療に使用されています。

特性

タイプ
Nuclear
可逆的
いいえ
エネルギー
発熱性
ΔH
-55000000.0 kJ/mol

関連する反応

Alpha Decay of Radium-226 Alpha Decay of Radon-222 Alpha Decay of Thorium-232 Neutron Capture by Uranium-238 Beta Decay of Iodine-131 Alpha Decay of Polonium-210 Americium-241 Alpha Decay Beta Decay of Cobalt-60 Plutonium-239 Fission Electron Capture by Beryllium-7

Frequently Asked Questions

What is the equation for Beta Decay of Strontium-90?
The balanced equation is: ⁹⁰Sr → ⁹⁰Y + e⁻ + ν̄ₑ.
What type of reaction is Beta Decay of Strontium-90?
Beta Decay of Strontium-90 is a nuclear reaction.
Is Beta Decay of Strontium-90 exothermic or endothermic?
Beta Decay of Strontium-90 is exothermic (releases energy). The enthalpy change (ΔH) is -55000000.0 kJ/mol.