Hans Suess
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Hans Eduard Suess (December 16, 1909 – September 20, 1993) was an
Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...
n born American
physical chemist Physical chemistry is the study of macroscopic and microscopic phenomena in chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, thermodynamics, quantum chemistry, statistical mech ...
and nuclear physicist. He was a grandson of the Austrian geologist
Eduard Suess Eduard Suess (; 20 August 1831 - 26 April 1914) was an Austrian geologist and an expert on the geography of the Alps. He is responsible for hypothesising two major former geographical features, the supercontinent Gondwana (proposed in 1861) and t ...
.


Career

Suess earned his
Ph.D. A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields. Because it is ...
in chemistry from the
University of Vienna The University of Vienna (german: Universität Wien) is a public research university located in Vienna, Austria. It was founded by Duke Rudolph IV in 1365 and is the oldest university in the German-speaking world. With its long and rich hist ...
in 1935 under the supervision of Philipp Gross. During
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
, he was part of a team of German scientists studying
nuclear power Nuclear power is the use of nuclear reactions to produce electricity. Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. Presently, the vast majority of electricity from nuclear power is produced ...
and was advisor to the production of heavy water in a Norwegian plant (see
Operation Gunnerside The Norwegian heavy water sabotage ( nb, Tungtvannsaksjonen; nn, Tungtvassaksjonen) was a series of Allied-led efforts to halt German heavy water production via hydroelectric plants in Nazi Germany-occupied Norway during World War II, involvi ...
). After the war, he collaborated on the
shell model The SHELL model is a conceptual model of human factors that clarifies the scope of aviation human factors and assists in understanding the human factor relationships between aviation system resources/environment (the flying subsystem) and the huma ...
of the
atomic nucleus The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment. After the discovery of the neutron ...
with future (1963) Nobel Prize winner Hans Jensen. In 1950, Suess emigrated to the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
. He did research in the field of
cosmochemistry Cosmochemistry (from Greek κόσμος ''kósmos'', "universe" and χημεία ''khemeía'') or chemical cosmology is the study of the chemical composition of matter in the universe and the processes that led to those compositions. This is done ...
, investigating the abundance of certain elements in meteorites with
Harold Urey Harold Clayton Urey ( ; April 29, 1893 – January 5, 1981) was an American physical chemist whose pioneering work on isotopes earned him the Nobel Prize in Chemistry in 1934 for the discovery of deuterium. He played a significant role in th ...
(
Nobel Prize in Chemistry ) , image = Nobel Prize.png , alt = A golden medallion with an embossed image of a bearded man facing left in profile. To the left of the man is the text "ALFR•" then "NOBEL", and on the right, the text (smaller) "NAT•" then "M ...
, 1934) at the
University of Chicago The University of Chicago (UChicago, Chicago, U of C, or UChi) is a private university, private research university in Chicago, Illinois. Its main campus is located in Chicago's Hyde Park, Chicago, Hyde Park neighborhood. The University of Chic ...
. In 1955, Suess was recruited for the faculty of Scripps Institution of Oceanography, and in 1958 he became one of the four founding faculty members of the
University of California, San Diego The University of California, San Diego (UC San Diego or colloquially, UCSD) is a public land-grant research university in San Diego, California. Established in 1960 near the pre-existing Scripps Institution of Oceanography, UC San Diego is t ...
. He remained at UCSD as Professor until 1977 and as Emeritus Professor thereafter. He established a laboratory at UCSD for carbon-14 determinations, where he trained students including Ellen R.M. Druffel, now the Fred Kavli Professor of Earth System Science at
University of California, Irvine The University of California, Irvine (UCI or UC Irvine) is a public land-grant research university in Irvine, California. One of the ten campuses of the University of California system, UCI offers 87 undergraduate degrees and 129 graduate and p ...
. Suess's most recent research was focused on the distribution of carbon-14 and
tritium Tritium ( or , ) or hydrogen-3 (symbol T or H) is a rare and radioactive isotope of hydrogen with half-life about 12 years. The nucleus of tritium (t, sometimes called a ''triton'') contains one proton and two neutrons, whereas the nucleus of ...
in the oceans and atmosphere. On basis of
radiocarbon Carbon-14, C-14, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons. Its presence in organic materials is the basis of the radiocarbon dating method pioneered by Willard Libby and c ...
analyses of annual growth-rings of trees he contributed to * the calibration of the radiocarbon dating scale, and * the study of the magnitude of the dilution of atmospheric radiocarbon by carbon dioxide from fossil fuels burned since the industrial revolution. This dilution is known as the Suess effect (see articles about the anthropogenic
greenhouse effect The greenhouse effect is a process that occurs when energy from a planet's host star goes through the planet's atmosphere and heats the planet's surface, but greenhouse gases in the atmosphere prevent some of the heat from returning directly ...
). The mineral '' suessite'', a Fe, Ni-silicide in Enstatit-Chondrites, is named after him.


Death

On September 20, 1993, Suess died in a La Jolla retirement home.


Name confusion

Suess was frequently confused—by the
US Postal Service The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the U. ...
among others—with a contemporary, the famed children's writer
Dr. Seuss Theodor Seuss Geisel (;"Seuss"
'' La Jolla, California. The two names have been posthumously linked as well: both men's personal papers are housed in the Geisel Library at the
University of California, San Diego The University of California, San Diego (UC San Diego or colloquially, UCSD) is a public land-grant research university in San Diego, California. Established in 1960 near the pre-existing Scripps Institution of Oceanography, UC San Diego is t ...
.


Notes


References

*
A Biographical Memoir, from the National Academy PressA Biographical Memoir, from the National Academy Press
* * * *Robert Jungk in ''Brighter Than a Thousand Suns'' (Middlesex: Penguin Books, 1958), quotes Suess about the production of heavy water by the Vemork plant. From page 110: ''"... Jomar Brun, a former technical manager of the ..heavy water works at Rjukan in Norway ..stated that he had been told by Hans Suess, the German atomic expert employed there, that production ..could not attain the dimensions important for war production in much less than five years."'' Jomar Brun fled to Sweden after the occupation by German troops in 1940. Brun's letters (1950–1987), archived in
''Hans Suess Papers''
''Series 2, Correspondence:b4/f29'', contain a discussion of secret war operations and Brun's role in the production of heavy water.
Hitler's Sunken Secret, a NOVA production airing in November 2005
undertakes a forensics approach to evaluate the heavy water threat. * Brun, Jomar. ''Brennpunkt Vemork 1940-1945''. , 119 pages (1985), Universitetsforlaget. * {{DEFAULTSORT:Suess, Hans 1909 births 1993 deaths Austrian nuclear physicists Austrian emigrants to the United States Nuclear program of Nazi Germany Austrian physical chemists American physical chemists American nuclear physicists Members of the United States National Academy of Sciences Scientists from Vienna Recipients of the V. M. Goldschmidt Award