Understanding the Impact of H<sub>2</sub> Diffusion Energy on the Formation Efficiency of H<sub>2</sub> on the Interstellar Dust Grain Surface

doi:10.1088/1674-4527/ad707a

	Understanding the Impact of H₂ Diffusion Energy on the Formation Efficiency of H₂ on the Interstellar Dust Grain Surface
	Guo, Xiaoying 1; Iqbal, Wasim2,3 ; Chang, Qiang1 ; Li, Xiao-Hu2,3
	2024-09-01
Source Publication	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN	1674-4527
Volume	24 Issue:9 Pages:095017
Contribution Rank	2
Abstract	We use microscopic Monte Carlo simulation techniques to investigate the impact of H-2 diffusion energy on the recombination efficiency of H-2 on interstellar dust grain surfaces under diffuse and translucent cloud conditions. We constructed five models representing different possible conditions encountered by adsorbed H and H-2 on interstellar dust grains. We implemented adsorption sites with multiple binding energies for surface species; the Encounter-Desorption mechanism was also included. The study focused on silicate surfaces in diffuse clouds and water ice surfaces in translucent clouds. The results show that the recombination efficiency of H-2 on dust surfaces decreases as H-2 diffusion energy increases. An interesting finding of this work is that considering different binding sites for H and H-2 gives rise to multiple steady phases, during which the recombination efficiency remains constant with a change in H-2 diffusion energy.
Keyword	astrochemistry atomic processes ISM: molecules
DOI	10.1088/1674-4527/ad707a
Indexed By	SCI
Language	英语
WOS Keyword	MOLECULAR-HYDROGEN FORMATION ; ENCOUNTER DESORPTION ; ABUNDANCE ; ATOMS ; GAS
Funding Project	National Natural Science Foundation of China[12173023]
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:001315425700001
Publisher	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Funding Organization	National Natural Science Foundation of China
Citation statistics
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/6991
Collection	射电天文研究室_天体化学研究团组
Corresponding Author	Iqbal, Wasim
Affiliation	1.Shandong Univ Technol, Sch Phys & Optoeletron Engn, Zibo 255000, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China
Corresponding Author Affilication	Xinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation GB/T 7714	Guo, Xiaoying,Iqbal, Wasim,Chang, Qiang,et al. Understanding the Impact of H₂ Diffusion Energy on the Formation Efficiency of H₂ on the Interstellar Dust Grain Surface[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2024,24(9):095017.
APA	Guo, Xiaoying,Iqbal, Wasim,Chang, Qiang,&Li, Xiao-Hu.(2024).Understanding the Impact of H₂ Diffusion Energy on the Formation Efficiency of H₂ on the Interstellar Dust Grain Surface.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,24(9),095017.
MLA	Guo, Xiaoying,et al."Understanding the Impact of H₂ Diffusion Energy on the Formation Efficiency of H₂ on the Interstellar Dust Grain Surface".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 24.9(2024):095017.

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