Argon-40 discovery on MoonDate: 15 March 2022 Tags: Space
CHACE-2 on board Chandrayaan-2 has managed to find traces of Argon-40 in the tenuous lunar exosphere.
The study has managed to find out evidences of Argon in the equatorial and mid-latitude regions of the Moon.
Argon has been previously identified but was limited to near-equatorial regions as seen by the Apollo-17 mission.
The density of Argon-40 increases near the sunrise terminator, decreases along the dayside, shows a secondary peak near the sunset terminator, and a night-side minimum.
The observations provide insights into the lunar exospheric species and activities which would help in understanding the composition of the lunar surface.
Chandra’s Atmospheric Composition Explorer-2 (CHACE-2)
The CHACE-2 is an upgradation of the CHACE experiment on the Moon Impact Probe (MIP) of Chandrayaan-1 mission.
Its main aim is to provide insight on the dynamics of lunar exospheric species as well as on the radiogenic activities below the lunar surface.
Argon is an inert, odorless and colorless noble gas. The majority of the gas on earth is in form of isotope Argon-40.
Argon-40 is formed due to radioactive disintegration of Potassium-40 (K-40) present below the surface.
It is used in a wide range of industrial applications like welding and lighting purposes, in food & drink industry and in healthcare.