Beta Decay of Cesium-137

137Cs → 137Ba + e− + ν̄e + γ

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Cesium Cs 1 (s)
생성물 Barium Ba 1 (s)

일상 속 예시

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

산업적 중요성

Cs-137은 산업용 측정, 석유 탐사의 검층, 식품 조사 처리, 그리고 방사선 감지기의 교정 선원으로 사용됩니다.

성질

유형
Nuclear
가역 반응
아니오
에너지
발열
ΔH
-127000000.0 kJ/mol

관련 반응

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.