Beta Decay of Strontium-90

90Sr → 90Y + e− + ν̄e

概述

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.

参与者

角色 物质 系数 状态
反应物 Strontium Sr 1 (s)
产物 Yttrium Y 1 (s)

日常示例

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

工业重要性

Sr-90用于放射性同位素热电发电机(RTG)、工业厚度测量仪,其子体Y-90用于癌症治疗。

属性

类型
Nuclear
可逆
否
能量
放热
ΔH
-55000000.0 kJ/mol

相关反应

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.