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Hans Georg Dehmelt

 

 
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Hans Georg Dehmelt
 
 
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Hans Georg Dehmelt (born September 9, 1922 in Görlitz
Görlitz

File:Typisches Haus der G?rlitzer Innenstadt.jpgG?rlitz is a town in Germany on the Lusatian Neisse River, in the States of Germany of Saxony....
, Germany
Germany

Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium, and the Netherlands....
) is a German
Germany

Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium, and the Netherlands....
-born American
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
 physicist
Physicist

A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many Physics#Major fields of physics spanning all length scales: from atom particles of which all ordinary matter is made to the behavior of the material Universe as a whole ....
, who co-developed the ion trap
Ion trap

An ion trap is a combination of electric or magnetic fields that captures ions in a region of a vacuum system or tube. The two most common types of ion traps are the Penning trap and the Paul trap ....
 technique with Wolfgang Paul
Wolfgang Paul

Wolfgang Paul was a Germany physicist, who co-developed the ion trap. He received the Nobel Prize in Physics in 1989 for this work.Wolfgang Paul was born on 10 August 1913 in Lorenzkirch, Germany....
, for which they both received the Nobel Prize in Physics
Nobel Prize in Physics

The Nobel Prize in Physics is awarded once a year by the Royal Swedish Academy of Sciences. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895 and awarded since 1901; the others are the Nobel Prize in chemistry, Nobel Prize in literature, Nobel Peace Prize, and Nobel Prize in physiology or medicine....
 in 1989. The technique was used for high precision measurement of the electron
Electron

The electron is a subatomic particle that carries a negative electric charge. It has elementary particle and is believed to be a point particle....
 g-factor
G-factor

A g-factor is a dimensionless quantity which characterizes the magnetic moment and gyromagnetic ratio of a particle or atomic nucleus. It is essentially a proportionality constant that relates the observed magnetic moment ? of a particle to the appropriate angular momentum quantum number and the appropriate fundamental quantum unit of ma...
.

Biography
At the age of ten Dehmelt enrolled in the Berlinisches Gymnasium zum Grauen Kloster
Berlinisches Gymnasium zum Grauen Kloster

The Berlinisches Gymnasium zum Grauen Kloster is the oldest Gymnasium in Berlin and continues to this day as the Evangelisches Gymnasium zum Grauen Kloster....
, a Latin school in Berlin
Berlin

Berlin is the Capital of Germany city and one of sixteen States of Germany of Germany. With a population of 3.4 million within its city limits, Berlin is the country's largest city....
, where he was admitted on a scholarship. After graduating in 1940, he volunteered for service in the German army
German Army

The German Army is the land component of the armed forces of the Federal Republic of Germany. Traditionally the German military forces have been composed of the Army, the Deutsche Marine, and an Luftwaffe after World War I....
, which ordered him to attend the University of Breslau to study physics
Physics

Physics is the natural science which examines basic concepts such as energy, force, and spacetime and all that derives from these, such as mass, charge, matter and its Motion ....
 in 1943.






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Encyclopedia


Hans Georg Dehmelt (born September 9, 1922 in Görlitz
Görlitz

File:Typisches Haus der G?rlitzer Innenstadt.jpgG?rlitz is a town in Germany on the Lusatian Neisse River, in the States of Germany of Saxony....
, Germany
Germany

Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium, and the Netherlands....
) is a German
Germany

Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium, and the Netherlands....
-born American
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
 physicist
Physicist

A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many Physics#Major fields of physics spanning all length scales: from atom particles of which all ordinary matter is made to the behavior of the material Universe as a whole ....
, who co-developed the ion trap
Ion trap

An ion trap is a combination of electric or magnetic fields that captures ions in a region of a vacuum system or tube. The two most common types of ion traps are the Penning trap and the Paul trap ....
 technique with Wolfgang Paul
Wolfgang Paul

Wolfgang Paul was a Germany physicist, who co-developed the ion trap. He received the Nobel Prize in Physics in 1989 for this work.Wolfgang Paul was born on 10 August 1913 in Lorenzkirch, Germany....
, for which they both received the Nobel Prize in Physics
Nobel Prize in Physics

The Nobel Prize in Physics is awarded once a year by the Royal Swedish Academy of Sciences. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895 and awarded since 1901; the others are the Nobel Prize in chemistry, Nobel Prize in literature, Nobel Peace Prize, and Nobel Prize in physiology or medicine....
 in 1989. The technique was used for high precision measurement of the electron
Electron

The electron is a subatomic particle that carries a negative electric charge. It has elementary particle and is believed to be a point particle....
 g-factor
G-factor

A g-factor is a dimensionless quantity which characterizes the magnetic moment and gyromagnetic ratio of a particle or atomic nucleus. It is essentially a proportionality constant that relates the observed magnetic moment ? of a particle to the appropriate angular momentum quantum number and the appropriate fundamental quantum unit of ma...
.

Biography


At the age of ten Dehmelt enrolled in the Berlinisches Gymnasium zum Grauen Kloster
Berlinisches Gymnasium zum Grauen Kloster

The Berlinisches Gymnasium zum Grauen Kloster is the oldest Gymnasium in Berlin and continues to this day as the Evangelisches Gymnasium zum Grauen Kloster....
, a Latin school in Berlin
Berlin

Berlin is the Capital of Germany city and one of sixteen States of Germany of Germany. With a population of 3.4 million within its city limits, Berlin is the country's largest city....
, where he was admitted on a scholarship. After graduating in 1940, he volunteered for service in the German army
German Army

The German Army is the land component of the armed forces of the Federal Republic of Germany. Traditionally the German military forces have been composed of the Army, the Deutsche Marine, and an Luftwaffe after World War I....
, which ordered him to attend the University of Breslau to study physics
Physics

Physics is the natural science which examines basic concepts such as energy, force, and spacetime and all that derives from these, such as mass, charge, matter and its Motion ....
 in 1943. After a year of study he returned to army service and was captured during the Battle of the Bulge
Battle of the Bulge

The Ardennes Offensive was a major German offensive launched towards the end of World War II through the forested Ardennes of Belgium , France and Luxembourg on the Western Front ....
.

After his release from an American prisoner of war camp in 1946, Dehmelt returned to his study of physics
Physics

Physics is the natural science which examines basic concepts such as energy, force, and spacetime and all that derives from these, such as mass, charge, matter and its Motion ....
 at the University of Göttingen, where he supported himself by repairing and bartering old, pre-war radio sets. He completed his master's thesis in 1948 and received his Ph.D.
Ph.D.

Ph.D. or PHD may stand for:* Doctor of Philosophy, an academic degree* Ph.D. , a 1980s British group* Piled Higher and Deeper, a web comic strip...
 in 1950, both from the University of Göttingen. He was then invited to Duke University
Duke University

Duke University is a private university research university located in Durham, North Carolina, North Carolina, United States. Founded by Methodism and Religious Society of Friends in the present-day town of Trinity, North Carolina in 1838, the school moved to Durham in 1892....
 as a postdoctoral associate, emigrating in 1952.

Dehmelt became an assistant professor at the University of Washington
University of Washington

University of Washington, founded in 1861, is a public research university in Seattle, Washington, Washington, United States. Also known as Washington and locally as UW or the U, it is the largest university in the northwestern United States and the oldest public university on the west coast....
 in Seattle, Washington
Seattle, Washington

Seattle is the most populous city in the US state of Washington and the Northwestern United States. The encompassing Seattle metropolitan area is the 15th largest in the United States, and the largest in the Pacific Northwest....
 in 1955, an associate professor in 1958, and a full professor in 1961. He conducted his work on ion trap
Ion trap

An ion trap is a combination of electric or magnetic fields that captures ions in a region of a vacuum system or tube. The two most common types of ion traps are the Penning trap and the Paul trap ....
s from the University of Washington
University of Washington

University of Washington, founded in 1861, is a public research university in Seattle, Washington, Washington, United States. Also known as Washington and locally as UW or the U, it is the largest university in the northwestern United States and the oldest public university on the west coast....
, where he remained until his retirement in October 2002. He was married to Irmgard Lassow, now deceased, and the couple had a son Gerd. Later Dr. Dehmelt married Diana Dundore, a practising physician
Physician

A physician, medical practitioner, doctor of medicine, or medical doctor practices medicine, and is concerned with maintaining or restoring human health through the study, diagnosis, and treatment of disease and injury....
.

Scientific Contributions


Awards and honors


  • Davisson-Germer Prize in 1970.
  • Rumford Prize
    Rumford Prize

    In 1796, Benjamin Thompson, known as Count Rumford, made two separate gifts of $5,000 each to the Royal Society of London and the American Academy of Arts and Sciences to enable them to give awards every two years for outstanding scientific research on heat or light....
     in 1985.
  • Nobel Prize in Physics
    Nobel Prize in Physics

    The Nobel Prize in Physics is awarded once a year by the Royal Swedish Academy of Sciences. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895 and awarded since 1901; the others are the Nobel Prize in chemistry, Nobel Prize in literature, Nobel Peace Prize, and Nobel Prize in physiology or medicine....
     in 1989.
  • National Medal of Science
    National Medal of Science

    The National Medal of Science is an honor bestowed by the President of the United States to individuals in science and engineering who have made important contributions to the advancement of knowledge in the fields of behavioral science and social sciences, biology, chemistry, engineering, mathematics and physics....
     in 1995.


External links