세슘-137의 베타 붕괴

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 세슘 Cs 1 (s)
생성물 바륨 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.

자주 묻는 질문

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