Bruno Pontecorvo - nuclear physicist

Defection to Soviet Union sparked unsolved mystery 

Bruno Pontecorvo hailed from a family
of talented individuals

Bruno Pontecorvo, a nuclear physicist whose defection to the Soviet Union in 1950 led to  suspicions of espionage after he had worked on research programmes in the United States, Canada, and the United Kingdom, was born on this day in 1913 in Marina di Pisa.

One of eight children born to Massimo Pontecorvo - a Jewish textile manufacturer who owned three factories - Bruno was from a family rich in intellectual talent. One of his brothers was the film director Gillo Pontecorvo, another the geneticist Guido Pontecorvo.

After high school, he enrolled at the University of Pisa to study engineering, but after two years switched to physics in 1931. He received a doctorate to study at the University of Rome La Sapienza, where Enrico Fermi had gathered together a group of promising young scientists, whom he dubbed “the Via Panisperna boys” after the name of the street where the Institute of Physics  was then situated.

Fermi described the 18-year-old Pontecorvo as one of the brightest young men he had met and invited Pontecorvo to work with him on his experiments bombarding atomic nuclei with slow neutrons.

Everything changed, however, after Benito Mussolini’s Fascist government passed a series of race laws, one of which excluded Jews from participating in higher education.

Enrico Fermi (above) rated Pontecorvo
as one of his brightest young scientists

Pontecorvo fled to Paris to work at the laboratory of Frédéric Joliot-Curie. During this period, influenced by his cousin, Emilio Sereni, he became a supporter of the ideals of communism and married Marianne Nordblom, a Swedish woman working in Paris as a nanny.

When Paris was invaded by the Germans in 1940, he became unsettled again.  He could not return to Italy and instead travelled to the United States, where Fermi had also gone. His new wife accompanied him.

In 1943 Pontecorvo joined the Anglo-Canadian nuclear research team at Chalk River, Ontario. There he worked on the design of the world’s first nuclear reactor using heavy water as a neutron moderator.

Despite earlier being seen as “undesirable”, in 1948 he was granted British citizenship. He joined the Atomic Energy Authority research station at Harwell, Berkshire, where classified research was being conducted.

Once Mussolini had been toppled, Pontecorvo had felt comfortable to begin taking holidays in Italy but during on such trip, in 1950, instead of returning to London, he and Marianne and their three children flew to Stockholm in Sweden and then on to Helsinki in Finland, at which point they disappeared.

Pontecorvo worked in France, the United States and
the United Kingdom before his defection in 1950

Ten months earlier, one of Pontecorvo’s colleagues at Harwell, Klaus Fuchs, confessed to spying for the Soviet Union - be was blamed by the US for Russia's development of nuclear weapons - and there was speculation that Pontecorvo had followed suit.

Pontecorvo’s relatives, including his sister, Anna, who lived in London, were at a loss to explain his disappearance, insisting he had given no indication that he was planning to fly from Rome to Stockholm.

Nothing was heard of him until 1955, when Pontecorvo appeared at a press conference in Moscow to promote the peaceful use of nuclear power. He denied ever having worked on nuclear weapons research.

Nonetheless, amid speculation that he and Fuchs and others had seriously endangered the West, he was stripped of his British passport. It has never been established why he left so abruptly and there is no concrete evidence that he was ever a spy. An alternative theory is that, because of his links with Fuchs - although they were not close friends - he was under surveillance by agents from America's FBI and feared for his safety if he remained in the West.

He would remain in the Soviet Union for the rest of his life, mainly at the Joint Institute for Nuclear Research (JINR) in Dubna, outside Moscow.

Pontecorvo received numerous awards for his work in Russia, including the Lenin Prize (1963) and the Order of Lenin (1983). After his death,  the JINR founded the annual Bruno Pontecorvo Prize to honour work done in particle physics. 

In accordance with his wishes, half of Pontecorvo's ashes were buried in the Protestant Cemetery in Rome, and another half in Dubna.

The yacht harbour at Marina di Pisa, the town where
the Pontecorvo family grew up

Travel tip:

Pisa used to be one of Italy’s major maritime powers, rivalling Genoa and Venice, until silt deposits from the Arno river gradually changed the landscape and ultimately cut the city off from the sea in the 15th century. Nowadays, almost 15km (9 miles) inland, it is a university city renowned for its art and architectural treasures, notably the Campo dei Miracoli, formerly known as Piazza del Duomo, located at the northwestern end of the city, which contains the cathedral (Duomo), baptistery and famously the tilting campanile known as the Leaning Tower of Pisa.  Marina di Pisa is situated where the Arno now meets the sea.  A popular seaside resort with a mix of sand and pebble beaches, it is home to the modern Port of Pisa yacht harbour.

The Via Panisperna (right) looking towards the Basilica di Santa
Maria Maggiore from the junction with Via Cesare Balbo

Travel tip:

The Via Panisperna is a Roman street that runs from Largo Angelicum, close to Trajan’s Forum and the Villa Aldobrandini in the direction of the Basilica di Santa Maria Maggiore. It forms part of the Rione Monti Roma district. It follows a straight, undulating path and crosses three of Rome’s seven hills - the Quirinale, the Viminale and the Esquilino.  The street is thought to take it name from the practice of the nearby convent of the Order of the Poor Clares for distributing “pane e perna” - bread and ham - among the local poor. The Church of San Lorenzo in Panisperna can reputedly trace its history to the reign of Emperor Constantine I in the early fourth century, only 100 years after the martyrdom of St Lawrence.

More reading:

Enrico Fermi - the Roman scientist who produced the world's first nuclear reactor

The first woman to head up Europe's major nuclear research body

Why Gillo Pontecorvo's most famous film was banned in France

Also on this day:

1599: The death of influential composer Luca Marenzio

1849: Austria launches world's first 'air raid' against Venice

1914: The death of Bishop Giacomo Radini-Tedeschi


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Gillo Pontecorvo - film director

Most famous film was banned in France

Gillo Pontecorvo was a journalist before being inspired
to make a career as a film director

The film director Gillo Pontecorvo, whose best known film, La battaglia di Algeri (The Battle of Algiers) won the Golden Lion at the Venice Film Festival in 1966 and was nominated for three Academy Awards, died on this day in 2006 in Rome, aged 86.

A former journalist who had been an Italian Resistance volunteer and a member of the Italian Communist Party, Pontecorvo had been in declining health for some years, although he continued to make documentary films and commercials until shortly before his death.

Although it was made a decade or so after the peak years of the movement, La battaglia di Algeri is in the tradition of Italian neorealism, with newsreel style footage and mainly non-professional actors.

Pontecorvo also won acclaim for his 1960 film Kapò, set in a Second World War concentration camp, and Burn! (1969) - titled Queimada in Italy - which was about the creation of a so-called banana republic on the fictitious Caribbean island of Queimada, starring Marlon Brando and loosely based on the failed slave revolution in Guadeloupe.

A poster for the US release of the
film La battaglia di algeri

Kapò, which was also was nominated for an Oscar, won a Italian National Syndicate of Film Journalists Silver Ribbon award for Didi Perego as best supporting actress, and the Mar del Plata Film Festival award for Susan Strasberg for best actress.

La battaglia di Algeri, which focussed on the Algerian War of Independence against the occupying French, caused great controversy in France, where it was banned for five years after the government objected to its sympathetic treatment of the Algerian rebels. Its co-star and joint producer, Saadi Yacef, was one of the leaders of the Algerian Liberation Front.

Pontecorvo was born in November 1919, in Pisa, into a high-achieving family. His father, Massimo, owned three textile factories employing more than 1,000 people. His eldest brother among seven siblings, Guido, later became an eminent geneticist, his second brother, Paolo, an engineer who worked on radar during the Second World War II and his third brother, Bruno, a renowned nuclear physicist.

Gillo enrolled at the University of Pisa to study chemistry but dropped out, taking the decision when Mussolini’s race laws came into force in 1938 to follow Bruno in fleeing to Paris, where he found work as a journalist.

When the German Army closed in on Paris, in June 1940, Pontecorvo and Bruno, along with their cousin Emilio Sereni, their friend, the future Nobel Prize-winning microbiologist Salvador Luria, and Pontecorvo’s future wife, Henrietta, fled the city on bicycles.

Marlon Brando played the lead character
in Pontecorvo's film Burn!

Pontecorvo reached St Tropez, where he earned money by drawing on his talent as a tennis player, providing lessons for rich residents.

By 1941, he had secretly joined the Italian Communist Party, and began to make regular trips to Italy to help organize anti-Fascist partisans.  Going by the pseudonym Barnaba, he spent the summer of 1943 working for his party’s underground newspaper, L'Unità, in Milan. From there he moved to Turin, where he began to organise factory workers.

After the war, he returned to Paris as the representative of Italy in the Youth World Federation and the Communist-backed World Federation of Democratic Youth.  Although his political philosophy remained Marxist, he broke his ties with the Communist party in 1956 after the Soviet intervention to suppress the Hungarian Revolution.

By then, his career as a filmmaker was established.  Although for many years an enthusiast for the cinema, it was after seeing Roberto Rossellini’s film, Paisà, that he gave up journalism and, using his own money and a 16mm camera, began to shoot political documentaries.

In 1957 he directed his first full-length film, La grande strada azzurra (The Wide Blue Road), which explored the life of a fisherman and his family facing hard times on a small island off the Dalmatian coast of Italy. The film won a prize at the Karlovy Vary International Film Festival.

Pontecorvo was director of
the Venice Film Festival 

Pontecorvo’s output was relatively small, largely because he spent months and sometimes years in research as he sought to produce authentic portrayals of events.

His last full-length feature film was Ogro (1979), which was inspired by the car bomb murder by ETA terrorists of Carrerro Blanco, the prime minister of Spain under Franco in 1973.  The film brought Pontecorvo his second David di Donatello award for Best Director, which he had also won for Burn! (Queimada).

Director of the Venice Film Festival from 1992 to 1994, Pontecorvo was married twice. His second wife, Teresa Ricci, bore him three sons - Ludovico, Marco and Simone.  Marco Pontecorvo followed his father’s footstep and became a filmmaker.

The Campo dei Miracoli in Pisa, with the baptistery in the
foreground and the Leaning Tower beyond the cathedral

Travel tip:

Pisa used to be one of Italy’s major maritime powers, rivalling Genoa and Venice, until silt deposits from the Arno river gradually changed the landscape and ultimately cut the city off from the sea in the 15th century. Nowadays, almost 15km (9 miles) inland, it is a university city renowned for its art and architectural treasures with a 10.5km (7 miles) circuit of 12th century walls. The Campo dei Miracoli, formerly known as Piazza del Duomo, located at the northwestern end of the city, contains the cathedral (Duomo), baptistery and famously the tilting campanile known as the Leaning Tower of Pisa, all built in black and white marble between the 11th and 14th centuries.

Giorgio Vasari's Palazzo della Carovana used to be the
headquarters of a Medici military order

Travel tip:

In the centre of Pisa, the elegant Piazza dei Cavalieri is dominated by Palazzo della Carovana, built and lavishly decorated by Giorgio Vasari between 1562 and 1564. Originally the headquarters of the Knights of St. Stephen, a Roman Catholic dynastic military order founded in 1561 by Cosimo I de' Medici, first Grand Duke of Tuscany, it is now the main building of the Scuola Normale Superiore di Pisa, one of three universities in Pisa, the others being the University of Pisa and the Scuola Superiore Sant’Anna.

More reading:

How Roberto Rossellini changed Italian cinema

Francesco Rosi - master of neorealism

The brilliance of Oscar-winner Vittorio de Sica

Also on this day:

1492: The death of Renaissance painter Piero della Francesca

1935: The birth of tenor Luciano Pavarotti


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