Beta Decay of Cesium-137

¹³⁷Cs → ¹³⁷Ba + e⁻ + ν̄_e + γ

Visão geral

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.

Participantes

Papel	Substância	Coeficiente	Estado
Reagente	Cesium Cs	1	(s)
Produto	Barium Ba	1	(s)

Exemplo do cotidiano

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

Importância industrial

O Cs-137 é utilizado em medição industrial, em perfilagem de poços na exploração de petróleo, irradiação de alimentos e como fonte de calibração para detetores de radiação.

Propriedades

Tipo: Nuclear
Reversível: Não
Energia: Exotérmico
ΔH: -127000000,0 kJ/mol

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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.