Passage: H+3 has been detected in two types of celestial environments: Jovian planets and interstellar clouds. In Jovian planets, it has been detected in the planet's ionospheres, the region where the Sun's high energy radiation ionizes the particles in the atmosphere. Since there is a high level of H2 in these atmospheres, this radiation can produce a significant amount of H+3. Also, with a broadband source like the Sun, there is plenty of radiation to pump the H+3 to higher energy states from which it can relax by stimulated and spontaneous emission.

Question: What is the reaction result of H2 and radiation?
H+3