Editing Smiling Buddha (section)

== Weapon design ==
[[File:Implosion Nuclear weapon.svg|thumb|An [[Nuclear weapon design#Implosion-type weapon|implosion-type nuclear weapon]]]]
The device was of the [[Nuclear weapon design#Implosion-type weapon|implosion-type]] design with a plutonium core, similar to ''[[Fat Man]]'', the American nuclear bomb [[Atomic bombings of Hiroshima and Nagasaki#Bombing of Nagasaki|detonated over Nagasaki in 1945]]. The implosion system was assembled at the TBRL of the DRDO in [[Chandigarh]]. The detonation system was developed at the HEMRL of the DRDO in [[Pune]].<ref name="Smiling Buddha"/> The 6&nbsp;kg of plutonium came from the CIRUS reactor at BARC and the neutron initiator was of the [[polonium]]–[[beryllium]] type, code-named ''Flower''. The entire nuclear bomb was engineered and assembled by Indian engineers at BARC before transportation to the test site. The fully assembled device had a hexagonal cross section, {{cvt|1.25|m}} in diameter, and weighed {{cvt|1400|kg}}. The device was mounted on a hexagonal metal tripod, and was transported to the shaft on rails which the army kept covered with sand.<ref name="Smiling Buddha"/><ref>{{cite web|url=https://shodhganga.inflibnet.ac.in/bitstream/10603/7823/7/07_chapter%203.pdf|title=Pokhran-I|work=Information and Library Network, [[University Grants Commission (India)|University Grants Commission]], Govt. of India|access-date=18 September 2020|archive-date=22 January 2015|archive-url=https://web.archive.org/web/20150122074340/http://shodhganga.inflibnet.ac.in/bitstream/10603/7823/7/07_chapter%203.pdf|url-status=live}}</ref>