Mumbai, Sep 24 - India's May 1998 nuclear tests were fully successful and helped the country achieve capability to build fission and thermonuclear fusion weapons and there was no need to carry out any more tests, two top scientists said here Thursday.

In a joint statement, Anil Kakodkar, chairman of the Atomic Energy Commission (AEC) and R. Chidambaram, principal scientific advisor to the government, responded point-by-point to all doubts and questions raised by retired scientists K. Santhanam and P.K. Iyengar on the five tests conducted at Pokharan, Rajashtan, on May 11 and 13, 1998.

The two top officials of India's nuclear energy establishment maintained that the Pokhran-II had achieved the desired scientific objectives.

The two scientists also spoke to mediapersons on the controversy created by Santhanam, a former Defence Research and Development Organisation (DRDO) scientist who had coordinated the nuclear tests but now says that the thermonuclear device test was a failure.

Kakodkar said that on the basis of the capability, India had the ability to meet national security requirements and does not require carrying out more such tests.

Chidambaram, the architect of Pokhran-II, said that several yield measurements had confirmed the yields from the tests.

He added that noted US seismologist Jack Evernden had made estimations of the tests taking into consideration geological and seismological differences between the test sites and they tallied with India's results.

Chidambaram stressed that several research papers have been written on the test results and have been peer-reviewed in reputed international journals.