India, April 7 -- India's indigenously developed atomic reactor, the Prototype Fast Breeder Reactor (PFBR) at Kalpakkam in Tamil Nadu, has achieved 'criticality', according to a statement by the Centre.

This means the reactor can now achieve a self-sustaining nuclear fission reaction without external intervention. A nuclear fission reaction usually produces neutrons.

The Prime Minister hailed the achievement. India, he said, has taken a defining step forward in its civil nuclear journey, marking significant progress in the second stage of its nuclear programme. Modi emphasised that the advanced reactor, which has the capability to generate more fuel than it consumes, showcases the country's strong scientific capabilities and robust engi...