n.光致离解；光解作用

Photodissociation is a crucial process in the upper atmosphere of planets, where UV light from the sun breaks down molecules like ozone.
光解作用在行星高层大气中是一个关键过程，其中来自太阳的紫外线会分解如臭氧等分子。
The photodissociation of water vapor leads to the production of hydrogen and oxygen atoms in space.
水蒸气的光解作用会导致太空中产生氢原子和氧原子。
In the study of interstellar chemistry, photodissociation plays a significant role in regulating the abundances of various molecules.
在星际化学的研究中，光解作用对于调控各种分子丰度具有重要意义。
The rate of photodissociation depends on the intensity of the incident radiation and the absorption cross-section of the molecule.
光解速率取决于入射辐射的强度以及分子的吸收截面。
UV photodissociation of CO2 can produce carbon monoxide and an excited state of oxygen atom.
二氧化碳的紫外光解可以生成一氧化碳和激发态的氧原子。
The reaction mechanism of photodissociation often involves the formation of short-lived intermediates or radicals.
光解反应机制通常涉及形成寿命短暂的中间体或自由基。
In astronomy, photodissociation regions (PDRs) mark the boundary between regions of gas that are ionized by starlight and those that remain neutral.
在天文学中，光解区域（PDRs）标志着由星光电离的气体区域与仍保持中性的气体区域之间的边界。
Through photodissociation, complex organic molecules in interstellar clouds could be broken down into simpler building blocks for the synthesis of new stars and planets.
通过光解作用，星际云中的复杂有机分子可能被分解为更简单的构成单元，进而用于新恒星和行星的合成。
The study of photodissociation dynamics helps us understand the chemical evolution of the universe over cosmic time.
对光解动力学的研究有助于我们了解宇宙随时间推移的化学演化。
In photochemistry, photodissociation serves as a fundamental step for understanding and predicting the behavior of molecules under light exposure conditions.
在光化学领域，光解作用是理解和预测分子在光照条件下行为的基本步骤。