Scientists unravel chemistry of Titan’s hazy atmosphere
Washington: In a new research, a team of scientists has unravelled the chemical evolution of the orange-brownish colored atmosphere of Saturn’s moon Titan, the only solar system body besides Venus and Earth with a solid surface and thick atmosphere.
Scientists at University of Hawai’i at Manoa carried out the research.
The UH Manoa team, including Xibin Gu and Seol Kim, conducted simulation experiments mimicking the chemical reactions in Titan’s atmosphere utilizing crossed molecular beams in which the consequence of a single collision between molecules can be followed.
The team’s experiments indicate that triacetylene can be formed by a single collision of a “radical” ethynyl molecule and a diacetylene molecule.
An ethynyl radical is produced in Titan’s atmosphere by the photo dissociation of acetylene by ultraviolet light.
Photo dissociation is a process in which a chemical compound is broken down by photons.
“Surprisingly, the photochemical models show inconsistent mechanisms for the production of polyynes,” said Kaiser, who is the principal investigator of this study.
The mechanism involved in the formation of triacetylene, was also confirmed by accompanying theoretical calculations by Alexander Mebel, a theoretical chemist at Florida International University.
These theoretical computations also provide the 3D distribution of electrons in atoms and thus the overall energy level of a molecule.
To apply these findings to the real atmosphere of Titan, Danie Liang and Yuk Yung, planetary scientists at Taiwan’s Academia Sinica and California Institute of Technology (Caltech), respectively, performed photochemical modelling studies of Titan’s atmosphere.
All data together suggest that triacetylene may serve as a building block to form more complex and longer polyynes and produce potential precursors for the aerosol-based layers of haze surrounding Titan.
The study demonstrated for the first time that a sensible combination of laboratory simulation experiments with theory and modelling studies can shed light on decade old unsolved problems crucial to understand the origin and chemical evolution of the solar system.
The researchers hope to unravel next the mystery of the missing ethane lakes on Titan – postulated to exist for half a century, but not detected conclusively within the framework of the Cassini-Huygens mission.
In the future, the UH Manoa team will combine the research results with terrestrial-based observations of Titan’s atmosphere.
More from India
More from World
More from Sports
More from Entertaiment
- What Muslims think about Ram Mandir issue?
- Shiv Sena MP Ravindra Gaikwad barred from flying after his assault on AI staffer
- Martyrs' Day: Nation remembers Bhagat Singh, Sukhdev and Rajguru for their sacrifice
- London terrorist attack leaves five dead, including police officer
- Do not put unnecessary pressure on police: PM Modi tells UP BJP MPs
- Hukumdev Narain Yadav to be new Vice-President of India?
- 400 Trinamool Congress members including many TMC stalwarts join BJP in Tripura
- Unable to meet educational expenses, Muslim girl writes to PM Narendra Modi – Know what happened next
- Bhagat Singh, Sukhdev, Rajguru were hanged on 23 March 1931 – This is how PM Modi paid tribute today
- Mulayam Singh Yadav's son Prateek, his daughter-in-law Aparna meet UP CM Yogi Adityanath - Know why