RAMBHA-LP Payload
02-09-2023
1 min read
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Overview:
Recently, RAMBHA-LP payload on board Chandrayaan-3’s lander Vikram has completed the first in-situ measurements of the surface-bound lunar plasma environment over the south polar region.
About RAMBHA-LP Payload:
- The Radio Anatomy of Moon Bound Hypersensitive ionosphere and Atmosphere - Langmuir Probe, named after American chemist and physicist Irving Langmuir, who was awarded the Nobel Prize in Chemistry.
- It is a device used for characterising plasma.
- The probe operates without interruption, aiming to explore the changes occurring in the near-surface plasma environment throughout the lunar day.
- The device features a 5 cm metallic spherical probe mounted on a 1-metre boom attached to the Chandrayaan-3 lander’s upper deck.
- It was led by Space Physics Laboratory (SPL), Vikram Sarabhai Space Centre (VSSC), Thiruvananthapuram.
- Key findings
- The initial assessment indicates that the plasma near the lunar surface is relatively sparse.
- It is characterised by a number density ranging from approximately 5 to 30 million electrons per cubic meter.
- This evaluation specifically pertains to the early stages of the lunar daytime.
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Q1) What is the Ionosphere?
The Ionosphere is part of Earth’s upper atmosphere, between 80 and about 600 km where Extreme UltraViolet (EUV) and x-ray solar radiation ionizes the atoms and molecules thus creating a layer of electrons. the ionosphere is important because it reflects and modifies radio waves used for communication and navigation