Abdul Qadeer Khan
born 1 April 1936), also known by some in Pakistan
(Urdu: محسن پاکِستان
, lit. “Benefactor of Pakistan”), more popularly known as Dr. A. Q. Khan
, is a Pakistani nuclear scientist
and a metallurgical engineer
, colloquially regarded as the founder of HEU
based Gas-centrifuge uranium enrichment
program for Pakistan’s integrated atomic bomb project
Khan founded and established the Kahuta Research Laboratories
(KRL) in 1976, being both its senior scientist and the director-general
until his retirement in 2001, and he was an early and vital figure in other science projects
. Apart from participating in Pakistan’s atomic bomb project
, he made major contributions in molecular morphology
, physical martensite
, and its integrated applications in condensed
and material physics
Abdul Qadeer Khan was one of Pakistan’s top scientists,
and was involved in the country’s various scientific programs until his dismissal.
In January 2004, Khan was officially summoned for a debriefing on his suspicious activities
in other countries after the United States provided evidence to the Pakistan Government
, and confessed it a month later.
Some have alleged that these activities were sanctioned by the authorities, though the Pakistan government sharply dismissed the claims.
After years of nominal house arrest, the Islamabad High Court
(IHC) on 6 February 2009 declared Abdul Qadeer Khan to be a free citizen
of Pakistan, allowing him free movement inside the country. The verdict was rendered by Chief Justice Sardar Muhammad Aslam
In September 2009, expressing concerns over the Islamabad High Court
‘s decision to end all security restrictions on Khan, the United States warned that Khan still remains a “serious proliferation risk”
Research in Europe
In 1972, the year he received his doctorate
, Abdul Qadeer Khan through a former university classmate
, and a recommendation from his old professor and mentor, Martin J. Brabers, joined the senior staff of the Physics Dynamics Research Laboratory in Amsterdam
There, he began his studies on the high-strength metals
to be used for the development of gas centrifuges
The gas centrifuges were first studied by Jesse Beams
during the Manhattan Project
in 1940s but research was discontinued in 1944. The Physics Laboratory was a subcontractor for URENCO Group
, the uranium enrichment research facility at Almelo
, Netherlands, which was established in 1970 by the Netherlands
to assure a supply of enriched uranium
for nuclear power plants
in the Netherlands.
Soon when the URENCO Group
offered him to join the senior scientific staff there, Qadeer Khan left the Physics Laboratories.
There, he was tasked to perform physics experiments on uranium metallurgy
to produce commercial-grade uranium metals usable for light water reactors
In the meantime, the URENCO Group handed him the drawings of centrifuges for the mathematical solution of the physics problems in the gas centrifuges.
Uranium enrichment is a difficult physical process
, as 235U
exists in natural uranium at a concentration of only 0.7%; URENCO used Zippe-type centrifuges
for that purpose to separate the isotopes 235U
from non-fissile 238U
by spinning UF6
gas at up to 100,000RPM
Abdul Qadeer Khan’s academic and leading-edge research in metallurgy brought laurels to the URENCO Group.
URENCO enjoyed a good academic relationship with him, and had him as one of its most senior scientists at the facility where he researched and studied.
At URENCO, Abdul Qadeer Khan pioneering research to improve the efficiency of the centrifuges greatly contributed to the technological advancement of the Zippe centrifuges, a method that was developed by mechanical engineer Gernot Zippe
in the Soviet Union during the 1940s
URENCO granted Qadeer Khan access to the most restricted areas of its facility as well as to highly classified documentation on gas centrifuge technology.
After it was revealed in 1979 that Pakistan through Mr Khan gained access to Urenco UC technology, a formal investigation was launched by the Dutch govt into the matter. Mr Khan was busy in Pakistan with the nuclear program and stayed absent from the trial. He was found guilty and in 1985 the Dutch court sentenced him to 4 years of imprisonment in his absence.
1971 war and return to Pakistan
The nuclear test greatly alarmed the Government of Pakistan
and the people.
Prime minister Zulfikar Bhutto squeezed
the time limit
of the atomic bomb project from five years to three years, in a vision to evolve and derived
the country’s scientific atomic project as from the “atomic capability
to sustainable nuclear power”
Sensing the importance of this test, Munir Ahmad Khan secretly launched the Project-706
, a codename of a secret uranium enrichment program under the domain of the atomic project.
Following the news about Pakistan, Khan wanted to contribute to the post-war military posture and approached the Pakistan government officials
, offering to assist in Pakistan’s secret atomic bomb project through his knowledge acquired at URENCO.
He insisted in joining the atomic bomb project
but was disuated by the military scientists who considered as “hard to find” a job in PAEC as a “metallurgist”.
Undaunted, he wrote to Prime minister Zulfikar Ali Bhutto
, highlighting his specific experience and encouraged Prime Minister Bhutto to work on an atomic bomb using uranium.
According to Kuldip Nayyar, although the letter was received by Prime minister Secretariat, Qadeer Khan was still unknown to the Government, leading Bhutto to ask the ISI
to run a complete background check on Khan and prepare an assessment report on him.
declared him as “incompetent” in the field of nuclear technology
based on his academic discipline.
Unsatisfied with ISI’
s report, Bhutto was eager to know more about him, and asked Munir Ahmad Khan to dispatch a team of PAEC’s scientists to meet him.
The PAEC team including Sultan Mahmood travelled to Amsterdam and arrived at his family home at night. Discussions were held until the next day.
After the team’s return to Pakistan, Bhutto decided to meet with Khan, and directed a confidential letter to him. Soon after, Abdul Qadeer Khan took a leave from URENCO Group, and departed for Pakistan in 1974.
Initiation and atomic bomb project
Main article: Project-706
In December 1974, Abdul Qadeer Khan went to Pakistan and took a taxi straight to the Prime minister Secretariat.
The session with Bhutto was held at midnight and remained under extreme secrecy.
There, Qadeer Khan met with Zulfikar Bhutto, Munir Khan
, and Dr. Mübaschir Hassan
, government Science Adviser
At this session, he enlightened the importance of uranium as opposed to plutonium, but Bhutto remain unconvinced to adopt uranium instead of plutonium for the development of an atomic bomb.
Although Bhutto ended the session quickly he remarked to his friends that: “He seems to make sense.”
Early morning the next day another session was held where he focussed the discussion on uranium
against plutonium, with other PAEC officials presented.
Even though he explained to Bhutto why he thought the idea of “plutonium” would not work, Qadeer Khan was fascinated by the possibility of atomic bomb.
Many of the theorists at that time, including Munir Khan
maintained that “plutonium and the nuclear fuel cycle
has its significance”,
and Munir Khan insisted that with the “French extraction plant in the offing, Pakistan should stick with its original plan.”
Bhutto did not disagree, but saw the advantage of mounting a parallel effort toward acquiring HEU
At the last session with Zulfikar Bhutto, Khan also advocated for the development of a fused design
to compress the single fission element in the metalized gun-type
atomic device, which many of his fellow theorists said would be unlikely to work.
Finally in 1976, he joined the atomic bomb project, and became a member of the enrichment division at PAEC.
Calculations performed by him were valuable contributions to centrifuges and vital link to nuclear weapon research.
He continued to push his ideas for uranium methods even though they had a low priority, with most efforts still aimed to produce military-grade plutonium.
Because of his interest in uranium, and his frustration at having been passed over for director of the uranium division (the job was instead given to Bashiruddin Mahmood
), Qadeer Khan refused to engage in further research and caused tensions with other researchers.
He became highly unsatisfied and bored with the research led by Mahmood; finally, he submitted a critical report to Bhutto, in which he explained that the “enrichment program” was nowhere near success.
Kahuta Research Laboratories
Bhutto sensed great danger as the scientists were split between uranium and plutonium routes.
Therefore, he called Khan for a meeting, which was held at the prime minister secretariat. With the backing of Bhutto, Qadeer Khan took over the enrichment program and renamed the project to Engineering Research Laboratories
Abdul Qadeer Khan insisted to work with the Corps of Engineers
to lead the construction of the suitable operational enrichment site, which was granted. The E-in-C
directed Brigadier Zahid Ali Akbar
of Corps of Engineers to work with Qadeer Khan in Project-706
The Corps of Engineers and Brigadier Akbar quickly acquired the lands of the village of Kahuta for the project.
At first, the ERL suffered many setbacks, and relied heavily on the knowledge from URENCO brought by Qadeer Khan.
Meanwhile in April 1976, theorist Ghulam Dastigar Alam
accomplished a great feat by successfully rotating
the first generation centrifuges to ~30,000 RPM.
When the news reached Qadeer Khan, he immediately requested to Bhutto for G.D. Alam’s assistance which was granted by the PAEC, dispatching a team of scientists including G.D. Alam to ERL.
At ERL, Qadeer Khan joined the team of theoretical physicists headed by theorist dr. GD Allam
, working on the physics problems involving the differential equations
in the centripetal forces
and angular momentum
calculations in the ultra-centrifuges.
On 4 June 1978, the enrichment program became fully functional after Dr. G.D. Alam succeeded in separated the 235U
and 238U isotopes
in an important experiment in which Dr. A.Q Khan also took part.
Contrary to his expectation, the military approved to the appointment of Major-General Zahid Ali as the scientific director of entire uranium division.