Max Christian Theodor Steenbeck (21 March 1904 – 15 December 1981) was a German nuclear physicist who invented the
betatron
A betatron is a type of cyclic particle accelerator for electrons. It consists of a torus-shaped vacuum chamber with an electron source. Circling the torus is an iron transformer core with a wire winding around it. The device functions simil ...
in
1934
Events
January–February
* January 1 – The International Telecommunication Union, a specialist agency of the League of Nations, is established.
* January 15 – The 8.0 1934 Nepal–Bihar earthquake, Nepal–Bihar earthquake strik ...
during his employment at the
Siemens AG
Siemens AG ( ) is a German multinational technology conglomerate. It is focused on industrial automation, building automation, rail transport and health technology. Siemens is the largest engineering company in Europe, and holds the posit ...
.
After the
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, Steenbeck was taken into the
Soviet custody and held in Russia where he was one of many German nuclear physicists in the
Soviet program of nuclear weapons. After accepting the teaching position at the University of Jena, Steenback was
reparated back to Germany where he devoted his career in teaching courses in university academia.
Early life
Steenbeck was born in
Kiel
Kiel ( ; ) is the capital and most populous city in the northern Germany, German state of Schleswig-Holstein. With a population of around 250,000, it is Germany's largest city on the Baltic Sea. It is located on the Kieler Förde inlet of the Ba ...
,
Schleswig-Holstein
Schleswig-Holstein (; ; ; ; ; occasionally in English ''Sleswick-Holsatia'') is the Northern Germany, northernmost of the 16 states of Germany, comprising most of the historical Duchy of Holstein and the southern part of the former Duchy of S ...
, on 21 March 1904. From 1920–29, he attended the
University of Kiel
Kiel University, officially the Christian Albrecht University of Kiel, (, abbreviated CAU, known informally as Christiana Albertina) is a public research university in the city of Kiel, Germany. It was founded in 1665 as the ''Academia Holsator ...
where he earned his bachelor's degree in physics and completed his
doctoral studies in physics. He completed his thesis on
x-rays
An X-ray (also known in many languages as Röntgen radiation) is a form of high-energy electromagnetic radiation with a wavelength shorter than those of ultraviolet rays and longer than those of gamma rays. Roughly, X-rays have a wavelength ran ...
under
Walther Kossel
Walther Ludwig Julius Kossel (; 4 January 1888 – 22 May 1956) was a German chemist and physicist known for his theory of the chemical bond (ionic bond/octet rule), Sommerfeld–Kossel displacement law of atomic spectra, the Kossel–Stranski ...
; he submitted the thesis in 1927/1928 and his doctorate was awarded in January 1929.
While a student at Kiel, he formulated the concept of the
cyclotron
A cyclotron is a type of particle accelerator invented by Ernest Lawrence in 1929–1930 at the University of California, Berkeley, and patented in 1932. Lawrence, Ernest O. ''Method and apparatus for the acceleration of ions'', filed: Januar ...
.
Career
Early years
From 1927 to 1945, Steenbeck was a senior staff scientist at the
Siemens AG in
Berlin
Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...
. From 1934, he was a laboratory director, and it was in that year that he submitted a patent for the
betatron
A betatron is a type of cyclic particle accelerator for electrons. It consists of a torus-shaped vacuum chamber with an electron source. Circling the torus is an iron transformer core with a wire winding around it. The device functions simil ...
. In 1943, he was appointed technical director of a static converter plant at Siemens, conducting research in gas-discharge physics. Additionally, at his plant, he was head of the
Volkssturm
The (, ) was a ''levée en masse'' national militia established by Nazi Germany during the last months of World War II. It was set up by the Nazi Party on the orders of Adolf Hitler and established on 25 September 1944. It was staffed by conscri ...
(people's army), the organised civilian resistance at the plant, which was to, as a last resort, defend the territory.
In Russia
At the close of the
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, Steenbeck was taken in the
Soviet custody with the
Red Army
The Workers' and Peasants' Red Army, often shortened to the Red Army, was the army and air force of the Russian Soviet Republic and, from 1922, the Soviet Union. The army was established in January 1918 by a decree of the Council of People ...
holding him at a concentration camp in
Poznań
Poznań ( ) is a city on the Warta, River Warta in west Poland, within the Greater Poland region. The city is an important cultural and business center and one of Poland's most populous regions with many regional customs such as Saint John's ...
in
Poland
Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...
. Eventually, he directed a letter to the Soviet intelligence service, the
NKVD
The People's Commissariat for Internal Affairs (, ), abbreviated as NKVD (; ), was the interior ministry and secret police of the Soviet Union from 1934 to 1946. The agency was formed to succeed the Joint State Political Directorate (OGPU) se ...
, where he explained his scientific background, which allowed him to be taken to recuperate at the
dacha
A dacha (Belarusian, Ukrainian language, Ukrainian and rus, дача, p=ˈdatɕə, a=ru-dacha.ogg) is a seasonal or year-round second home, often located in the exurbs of former Soviet Union, post-Soviet countries, including Russia. A cottage (, ...
in
Opalikha railway station at the end of 1945, after which he was sent to work at
Manfred von Ardenne's Institute A, in Sinop, a suburb of
Sukhumi
Sukhumi or Sokhumi is a city in a wide bay on the Black Sea's eastern coast. It is both the Capital city, capital and largest city of Abkhazia, a partially recognised state that most countries consider a part of Georgia (country), Georgia. The ...
. He headed a group working on both electromagnetic and
centrifugal isotope separation
Isotope separation is the process of concentrating specific isotopes of a chemical element by removing other isotopes. The use of the nuclides produced is varied. The largest variety is used in research (e.g. in chemistry where atoms of "marker" n ...
for the enrichment of
uranium
Uranium is a chemical element; it has chemical symbol, symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Ura ...
, with the latter having the highest priority. Steenbeck and his group were pioneers in the development of supercritical centrifuges. Steenbeck’s group, at its largest, included from 60 to 100 German and Russian personnel. Steenbeck was kept in the Soviet custody until 1956, when he went to
East Germany
East Germany, officially known as the German Democratic Republic (GDR), was a country in Central Europe from Foundation of East Germany, its formation on 7 October 1949 until German reunification, its reunification with West Germany (FRG) on ...
.
While Steenbeck developed the theory of the centrifugal isotope separation process,
Gernot Zippe, an
Austria
Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Aust ...
n engineer, headed the experimental effort in Steenbeck’s group. Zippe, a
POW
POW is "prisoner of war", a person, whether civilian or combatant, who is held in custody by an enemy power during or immediately after an armed conflict.
POW or pow may also refer to:
Music
* P.O.W (Bullet for My Valentine song), "P.O.W" (Bull ...
from the
Krasnogorsk camp, joined the group in the summer of 1946. Zippe returned to Germany in 1956. In 1957, he attended a conference on centrifugal isotope separation; it was then that he realized how advanced the work had been in Steenbeck’s group, and Zippe then applied for a patent on short-bowl centrifuge technology, known as the
Zippe-type centrifuge
The Zippe-type centrifuge is a gas centrifuge designed to enrich the rare fissile isotope uranium-235 (235U) from the mixture of isotopes found in naturally occurring uranium compounds. The Isotope separation, isotopic separation is based on the sl ...
. He was invited to repeat the experiments at the
University of Virginia
The University of Virginia (UVA) is a Public university#United States, public research university in Charlottesville, Virginia, United States. It was founded in 1819 by Thomas Jefferson and contains his The Lawn, Academical Village, a World H ...
. Shortly after completing the work, at the request of the United States, all centrifuge research in Germany became classified on August 1, 1960. The work of Steenbeck and Zippe shaped
Europe
Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...
an,
Japan
Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
ese, and Pakistan's enrichment processes.
Steenbeck and Zippe, before being allowed to leave the Soviet Union, were put into quarantine in the second half of 1952. During the quarantine period, they only performed unclassified work. First they went to
Leningrad
Saint Petersburg, formerly known as Petrograd and later Leningrad, is the List of cities and towns in Russia by population, second-largest city in Russia after Moscow. It is situated on the Neva, River Neva, at the head of the Gulf of Finland ...
, after which they worked in the Institute of Semiconductors of the Academy of Sciences in
Kiev
Kyiv, also Kiev, is the capital and most populous List of cities in Ukraine, city of Ukraine. Located in the north-central part of the country, it straddles both sides of the Dnieper, Dnieper River. As of 1 January 2022, its population was 2, ...
. They both left the Soviet Union in 1956.
Return to (East) Germany

In 1956, Steenbeck became an ordinarius professor of plasma physics at the
University of Jena
The University of Jena, officially the Friedrich Schiller University Jena (, abbreviated FSU, shortened form ''Uni Jena''), is a public research university located in Jena, Thuringia, Germany.
The university was established in 1558 and is cou ...
, and, from 1956 to 1959, he was also director of the Institute for Magnetic Materials at
Jena
Jena (; ) is a List of cities and towns in Germany, city in Germany and the second largest city in Thuringia. Together with the nearby cities of Erfurt and Weimar, it forms the central metropolitan area of Thuringia with approximately 500,000 in ...
. From 1958 to 1969, he was director of the German Academy of Science Institute for
Magnetohydrodynamics
In physics and engineering, magnetohydrodynamics (MHD; also called magneto-fluid dynamics or hydromagnetics) is a model of electrically conducting fluids that treats all interpenetrating particle species together as a single Continuum ...
, also in Jena. From 1957 to 1963, he was the head of the Technological Science Bureau on Reactor Construction, in Berlin. From 1962 to 1964, he was vice-president and in 1965 president of the German Academy of Science. In 1970, he was president of the East German Committee on European Security. In 1976, Steenbeck was honorary president of the East German Research Council. He died in
East Berlin
East Berlin (; ) was the partially recognised capital city, capital of East Germany (GDR) from 1949 to 1990. From 1945, it was the Allied occupation zones in Germany, Soviet occupation sector of Berlin. The American, British, and French se ...
.
The ''Max-Steenbeck Gymnasium'' in Cottbus, an academic high school offering extended mathematical-scientific-technical training, was named in his honour. .
Max-Steenbeck-Gymnasium
– Cottbus.
Selected literature
* W. Kossel and M. Steenbeck ''Absolute Messung des Quantenstroms im Röntgenstrahl'', ''Zeitschrift für Physik'' Volume 42, Numbers 11-12, 832-834 (1927). The authors were cited as being from the ''Physikalisches Institut'', Kiel. The article was received on 14. March 1927.
*Alfred von Engel and Max Steenbeck ''On the Gas-Temperature in the Positive Column of an Arc'' ''Phys. Rev. '' Volume 37, Issue 11, 1554 - 1554 (1931). The authors were cited as being at ''Wissenschaftliche Abteilung, der Siemens-Schuckertwerke A.-G.'', Berlin. The article was received on 28 April 1931.
Books
*Max Steenbeck ''Probleme und Ergebnisse der Elektro- und Magnetohydrodynamik'' (Akademie-Verl., 1961)
*Max Steenbeck, Fritz Krause, and Karl-Heinz Rädler ''Elektrodynamische Eigenschaften turbulenter Plasmen'' (Akademie-Verl., 1963)
*Max Steenbeck ''Wilhelm Wien und sein Einfluss auf die Physik seiner Zeit'' (Akademie-Verl., 1964)
*Max Steenbeck ''Die wissenschaftlich-technische Entwicklung und Folgerungen für den Lehr- und Lernprozess im System der Volksbildung der Deutschen Demokratischen Republik'' (VEB Verl. Volk u. Wissen, 1964)
*Max Steenbeck ''Wachsen und Wirken der sozialistischen Persönlichkeit in der wissenschaftlich-technischen Revolution'' (Dt. Kulturbund, 1968)
*Max Steenbeck ''Impulse und Wirkungen. Schritte auf meinem Lebensweg.'' (Verlag der Nation, 1977)
Bibliography
*Albrecht, Ulrich, Andreas Heinemann-Grüder, and Arend Wellmann ''Die Spezialisten: Deutsche Naturwissenschaftler und Techniker in der Sowjetunion nach 1945'' (Dietz, 1992, 2001)
* Barwich, Heinz and Elfi Barwich ''Das rote Atom'' (Fischer-TB.-Vlg., 1984)
*Heinemann-Grüder, Andreas ''Keinerlei Untergang: German Armaments Engineers during the Second World War and in the Service of the Victorious Powers'' in Monika Renneberg and Mark Walker (editors) ''Science, Technology and National Socialism'' 30-50 (Cambridge, 2002 paperback edition)
*Hentschel, Klaus (editor) and Ann M. Hentschel (editorial assistant and translator) ''Physics and National Socialism: An Anthology of Primary Sources'' (Birkhäuser, 1996)
*Holloway, David ''Stalin and the Bomb: The Soviet Union and Atomic Energy 1939 – 1956'' (Yale, 1994)
*Naimark, Norman M. ''The Russians in Germany: A History of the Soviet Zone of Occupation, 1945-1949'' (Hardcover - Aug 11, 1995) Belknap
*Oleynikov, Pavel V. ''German Scientists in the Soviet Atomic Project'', ''The Nonproliferation Review'' Volume 7, Number 2, 1 – 30
(2000)
The author has been a group leader at the Institute of Technical Physics of the Russian Federal Nuclear Centre in Snezhinsk (Chelyabinsk-70).
*Riehl, Nikolaus and Frederick Seitz ''Stalin’s Captive: Nikolaus Riehl and the Soviet Race for the Bomb'' (American Chemical Society and the Chemical Heritage Foundations, 1996) . This book is a translation of Nikolaus Riehl’s book ''Zehn Jahre im goldenen Käfig (Ten Years in a Golden Cage)'' (Riederer-Verlag, 1988); Seitz has written a lengthy introduction to the book. This book is a treasure trove with its 58 photographs.
External links
Lawrence and His Laboratory
- ''II — A Million Volts or Bust'' in Heilbron, J. L., and Robert W. Seidel ''Lawrence and His Laboratory: A History of the Lawrence Berkeley Laboratory', Volume I.'' (Berkeley: University of California Press, 2000)
Tracking the technology
– Nuclear Engineering International, 31 August 2004
– William J. Broad ''Slender and Elegant, It Fuels the Bomb'', ''New York Times'' March 23, 2004
Notes
{{DEFAULTSORT:Steenbeck, Max
1904 births
1981 deaths
People from Kiel
People from the Province of Schleswig-Holstein
University of Kiel alumni
German physicists
20th-century German physicists
Scientists from Kiel
Volkssturm personnel
German expatriates in the Soviet Union
Nuclear weapons program of the Soviet Union people
East German scientists
Foreign members of the USSR Academy of Sciences
Recipients of the Lomonosov Gold Medal
Members of the German Academy of Sciences at Berlin