Beta Decay of Cesium-137

137Cs → 137Ba + e− + ν̄e + γ

概述

Cesium-137 beta decays to barium-137m (metastable), which then emits a 662 keV gamma ray to reach stable barium-137. Cs-137 has a half-life of 30.2 years and is a major fission product. It is water-soluble and mimics potassium biologically, distributing throughout soft tissues.

参与者

角色 物质 系数 状态
反应物 Cesium Cs 1 (s)
产物 Barium Ba 1 (s)

日常示例

Cs-137 is used in industrial level and thickness gauges, and in radiation therapy devices. The Goiânia accident in Brazil showed its hazards.

工业重要性

Cs-137用于工业测量、石油勘探的测井、食品辐照,以及作为辐射探测器的校准源。

属性

类型
Nuclear
可逆
否
能量
放热
ΔH
-127000000.0 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 Beta Decay of Strontium-90 Alpha Decay of Polonium-210 Americium-241 Alpha Decay Beta Decay of Cobalt-60 Electron Capture by Beryllium-7

Frequently Asked Questions

What is the equation for Beta Decay of Cesium-137?
The balanced equation is: ¹³⁷Cs → ¹³⁷Ba + e⁻ + ν̄ₑ + γ.
What type of reaction is Beta Decay of Cesium-137?
Beta Decay of Cesium-137 is a nuclear reaction.
Is Beta Decay of Cesium-137 exothermic or endothermic?
Beta Decay of Cesium-137 is exothermic (releases energy). The enthalpy change (ΔH) is -127000000.0 kJ/mol.