Tritium Beta Decay

3H → 3He + e− + ν̄e

概述

Tritium (hydrogen-3) undergoes beta decay to helium-3 with a half-life of 12.3 years, emitting a very low energy electron (max 18.6 keV). The low beta energy means tritium radiation cannot penetrate skin and is only hazardous if ingested or inhaled. Tritium is produced in nuclear reactors and by cosmic rays.

参与者

角色 物质 系数 状态
反应物 Hydrogen H 1 (g)
产物 Helium He 1 (g)

日常示例

Self-luminous exit signs and watch dials use tritium gas sealed in phosphor-coated glass tubes that glow without batteries for over 10 years.

工业重要性

氚用于自发光装置、水文学示踪剂、核武器及D-T聚变反应堆燃料，是重要的核工业原料。

属性

类型
Nuclear
可逆
否
能量
放热
ΔH
-1800000.0 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 Tritium Beta Decay?
The balanced equation is: ³H → ³He + e⁻ + ν̄ₑ.
What type of reaction is Tritium Beta Decay?
Tritium Beta Decay is a nuclear reaction.
Is Tritium Beta Decay exothermic or endothermic?
Tritium Beta Decay is exothermic (releases energy). The enthalpy change (ΔH) is -1800000.0 kJ/mol.