Master of Science, Madras University, 1958. Doctor of Philosophy, Indian Institute School, Bangalore, 1962.
Science officer, Bhabha Atomic Research Center, Bombay, l962-74; head neutron physics division, Bhabha Atomic Research Center, Bombay, l974-84; director physics group, Bhabha Atomic Research Center, Bombay, l984-90; member Executive Committee, International Union Crystallography, since 1990. Director Bhabha Atomic Research Centre, since 1990. Member Atomic Energy Commission.
Fellow Indian National Science Academy (council), Indian Academy of Sciences (council).
Married Chella Mani, July 3, l963. Children: Nirmala, Nithya.