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Abstract: This paper highlights the importance of collisional processes in astrophysical environments, including the interstellar medium, planetary atmospheres, and laboratory studies. We emphasize the critical roles of heavy-particle ionization and dissociative recombination, underscoring the need for accurate cross-section data. Our research focuses on calculations of cross sections and rate coefficients needed for modeling. We also discuss future research directions.
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Last update: February 02, 2026