Answer the following question: - residence is mumbai , india    - prizes is padma -rrb- bhushan -lrb- 1975 -rrb- bhatnagar award -lrb- 1971    - known for is nuclear neutron scattering cold fission program of india operation smiling buddha operation shakti    - fields is nuclear physics    - death date is 21 december 2011    - doctoral advisor is bertram neville brockhouse      - work institution is department research centre atomic energy commission of india government college university of july 2013 atomic energy -lrb- dae -rrb- bhabha atomic    - birth date is 29 june 1931      - nationality is indian    - death place is mumbai , india    - birth place is thiruvananthapuram , kerala    Given the details above, guess who could this information be about.
Answer:
p. k. iyengar