Helium gas

 
Why in News?
Helium gas is currently making global headlines due to a severe supply crisis triggered by geopolitical conflict in the Middle East, specifically following drone and missile strikes on Qatar’s Ras Laffan Industrial City. 
 
Key Properties

• Physical State: A colourless, odourless, and non-toxic noble gas.

• Thermal Extremes: It has the lowest boiling point (-268.9°C) of all elements, making it essential for reaching temperatures near absolute zero.

• Abundance vs. Scarcity: While it is the second most abundant element in the universe, it is rare on Earth because it is light enough to escape the atmosphere and cannot be produced synthetically. 

Critical Applications
Helium is considered a "strategic utility" because it often has no viable substitute: 

• Healthcare (MRI): Liquid helium cools superconducting magnets in MRI scanners. If the gas runs out, the magnet can "quench," causing permanent damage.

• Semiconductors: Essential for cooling silicon wafers and providing inert atmospheres for chip manufacturing.

• Aerospace: Used to "purge" and pressurize rocket fuel tanks (used by NASA’s Artemis program and SpaceX).

• Quantum Computing: Helium-3 is vital for ultra-low temperature cooling in next-gen quantum processors. 

Global Supply

• Legacy Sources: Historically, helium was a by-product of natural gas. Major producers included the USA, Qatar, and Algeria.

• Emerging "Primary" Projects: Companies are now racing to develop deposits where helium is the main target (primary helium) in Tanzania and Minnesota, which are not tied to volatile oil/gas markets.

• Technology Transition: The 2026 crisis has accelerated the development of "helium-free" MRI machines (using closed-loop cooling), though these still represent less than 5% of the global market.