Beta Decay of Cesium-137

137Cs → 137Ba + e− + ν̄e + γ

概要

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.

参加者

役割 物質 係数 状態
反応物 Cesium Cs 1 (s)
生成物 Barium Ba 1 (s)

日常の例

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

産業上の重要性

Cs-137は工業用計測、石油探査における検層、食品照射、そして放射線検出器の較正源として使用されています。

特性

タイプ
Nuclear
可逆的
いいえ
エネルギー
発熱性
ΔH
-127000000.0 kJ/mol

関連する反応

Alpha Decay of Radon-222 Neutron Capture by Uranium-238 Beta Decay of Strontium-90 Beta Decay of Cobalt-60 Beta Decay of Carbon-14 Proton-Proton Chain (Solar Fusion) Uranium-235 Fission Positron Emission of Carbon-11 Positron Emission of Fluorine-18 (PET Scan) Alpha Decay of Radium-226

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.