Andrei Sakharov

Andrei Sakharov: The Bomb-Maker Who Changed Sides

On 12 August 1953 the Soviet Union detonated its first hydrogen bomb, built to a design of Andrei Sakharov's called *Sloika* — the Layer Cake. He was thirty-two. Within the year he was the youngest man ever elected to the Soviet Academy of Sciences and had received the first of his Hero of Socialist Labour awards, the highest civilian honour the USSR could bestow. Within a decade he was writing to the Politburo, pleading with them to stop testing the weapon he had given them.

A Physics Teacher's Son

He was born on 21 May 1921 in Moscow. His father Dmitri was a physics teacher and the author of physics textbooks — an inheritance that mattered. Sakharov passed his final school examination with distinction in 1938 and entered the Faculty of Physics at Moscow University, was evacuated to Ashkhabad when the Germans invaded, and graduated with distinction in 1942.

From 1942 to 1945 he worked as an engineer and inventor at a munitions factory on the Volga. It was practical war work, and it gave a theoretician's mind an unusually concrete education in how devices actually get built.

Tamm's Student

In 1945 he began doctoral study at the Lebedev Institute under Igor Tamm, one of the outstanding Soviet physicists of the century, defending a thesis in nuclear physics in 1947. The following year Tamm's group was folded into the top-secret weapons programme, and Sakharov with it. He was present at the first Soviet atomic detonation on 29 August 1949.

The Layer Cake

His central contribution was the *Sloika*: alternating layers of deuterium and uranium arranged so that fission would ignite fusion, an approach broadly parallel to Edward Teller's early American thinking. Tested in August 1953, it made the Soviet Union a thermonuclear power and made Sakharov, at thirty-two, an academician and a decorated national asset.

It is worth registering that his physics was not confined to weapons. In 1950, with Tamm, he did foundational work on the controlled thermonuclear reaction — the theoretical ancestry of magnetic-confinement fusion research. In 1951 he began experiments on magnetic generators, and in 1964 he set a record magnetic field of 25 million gauss.

Second Thoughts

By the late 1950s the doubts had started. Sakharov became preoccupied with the hazards of testing and with proliferation, and he did what a physicist does: he calculated. He worked out the radiological consequences of atmospheric detonations, published on the fallout hazard, and wrote directly to Soviet leaders urging that atmospheric testing stop. That campaign contributed to the 1963 Limited Test Ban Treaty.

The turning point was Tsar Bomba, detonated on 30 October 1961 — the most powerful nuclear weapon ever exploded. Sakharov emerged from it with a settled sense of personal responsibility for what he had helped create.

Reflections, 1968

In 1968 he wrote *Reflections on Progress, Peaceful Coexistence and Intellectual Freedom*. It attacked Soviet suppression of civil liberties directly, called for an end to the arms race and for cooperation with the United States, and argued for a democratic, pluralistic society free of intolerance and dogmatism. A smuggled copy reached the *New York Times*. By 1969 more than eighteen million copies were circulating around the world.

The state's response was immediate. Sakharov was removed from secret work and dismissed from the Soviet Atomic Energy Commission. He turned his research to elementary particles, the theory of gravitation and cosmology, and his public life to human rights.

The Committee, and the Prize

In 1970 he co-founded the Committee for Human Rights in Moscow with Valery Chalidze, Andrei Tverdokhlebov and others. He argued that in the most complex questions "only moral criteria, coupled with mental objectivity" could serve as a guide.

In 1975 he was awarded the Nobel Peace Prize. The Soviet authorities refused him permission to travel to Oslo, and his wife, Yelena Bonner, accepted it on his behalf. "Both now and for always," he wrote, "I intend to hold fast to my belief in the hidden strength of the human spirit."

Gorky

In January 1980 Sakharov publicly denounced the Soviet invasion of Afghanistan. He was seized and exiled without trial to Gorky — now Nizhny Novgorod — a closed city 250 miles east of Moscow, cut off from foreign contact. Bonner, herself a formidable activist, was convicted of anti-Soviet activity in 1984 and exiled alongside him.

He fought back with the only instrument left to him. In 1985 he undertook a hunger strike lasting six months, demanding that Bonner be allowed to travel to the United States for heart surgery. He won. In December 1986 Mikhail Gorbachev telephoned him personally, ended the exile, and invited him back to Moscow.

The Last Year

In April 1989 Sakharov was elected to the Congress of People's Deputies, becoming joint leader of the democratic opposition and a member of the commission drafting a new constitution. He died in Moscow on 14 December 1989, having just argued before the Congress for economic liberalisation and political pluralism. He did not live to see the union dissolve, but he had spent twenty years describing the country that would have to replace it.

Why Andrei Is Called a Genius

Two different claims are usually bundled under the word, and they should be separated. The scientific claim is solid: the Layer Cake design was a genuine and independent solution to the thermonuclear problem, election to the Academy at thirty-two made him its youngest member ever, and his work with Tamm on controlled fusion stands at the origin of the magnetic-confinement research programme still running today. He also had the physicist's characteristic reflex of turning a moral intuition into an arithmetic problem — his opposition to atmospheric testing began not with a feeling but with a calculation of how many people the fallout would kill.

The second claim is about moral intelligence, and it is the rarer thing. Sakharov had everything a Soviet citizen could want and stood to lose all of it. He published anyway, and then spent two decades in harassment, internal exile and hunger strikes without recanting.

The counter-case must be stated plainly. He built the weapon first. For roughly a decade he was an enthusiastic and highly effective architect of a thermonuclear arsenal, and he accepted the state's honours for it; the conscience arrived after 1953 and hardened only after 1961. As a pure physicist, his post-1968 work on particles, gravitation and cosmology is respected but does not place him among the century's great theorists — his scientific eminence rests substantially on weapons engineering done under conditions no one would call free inquiry. And there is a category question worth being honest about: courage and intellect are not the same faculty. Sakharov's supreme distinction may be moral rather than cognitive, which is a larger compliment than "genius," not a smaller one.

Legacy

The European Parliament's prize for freedom of thought carries his name. So does the argument he made and lost in his lifetime: that a state which cannot tolerate an honest scientist cannot, in the end, be trusted with anything, least of all with the weapons that scientist built for it.

Achievements

• Nobel Peace Prize — 1975
• Held posts at Lebedev Physical Institute
• Educated at MSU Faculty of Physics
• Fields of research: physics