The Institute for Transuranium Elements (ITU) is a
nuclear
Nuclear may refer to:
Physics
Relating to the nucleus of the atom:
*Nuclear engineering
*Nuclear physics
*Nuclear power
*Nuclear reactor
*Nuclear weapon
*Nuclear medicine
*Radiation therapy
*Nuclear warfare
Mathematics
* Nuclear space
*Nuclear ...
research
Research is creative and systematic work undertaken to increase the stock of knowledge. It involves the collection, organization, and analysis of evidence to increase understanding of a topic, characterized by a particular attentiveness to ...
institute in
Karlsruhe
Karlsruhe ( ; ; ; South Franconian German, South Franconian: ''Kallsruh'') is the List of cities in Baden-Württemberg by population, third-largest city of the States of Germany, German state of Baden-Württemberg, after its capital Stuttgart a ...
,
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
. The ITU is one of the seven institutes of the
Joint Research Centre
The Joint Research Centre (JRC) is the European Commission's science and knowledge service which employs scientists to carry out research in order to provide independent scientific advice and support to European Union (EU) policy.
Leadersh ...
, a Directorate-General of the
European Commission
The European Commission (EC) is the primary Executive (government), executive arm of the European Union (EU). It operates as a cabinet government, with a number of European Commissioner, members of the Commission (directorial system, informall ...
. The ITU has about 300 staff. Its specialists have access to an extensive range of advanced facilities, many unavailable elsewhere in Europe.
Mission statement
The Directorate General-Joint Research Centre is the European Commission's science and knowledge service. Its mission is to support EU policies with independent evidence throughout the whole policy cycle. Its work has a direct impact on the lives of citizens by contributing with its research outcomes to a healthy and safe environment, secure energy supplies, sustainable mobility and consumer health and safety. The JRC hosts specialist laboratories and unique research facilities and is home to thousands of scientists working to support EU policy. The JRC has ten Directorates and is located across five EU Member States (Belgium, Germany, Italy, the Netherlands and Spain).
The Directorate involved in this project is Directorate G – Nuclear Safety and Security within which the JRC's nuclear work programme, funded by the
EURATOM Research and Training Programme, is carried out. It contributes to the scientific foundation for the protection of the European citizen against risks associated with the handling and storage of highly radioactive material, and scientific and technical support for the conception, development, implementation, and monitoring of community policies related to nuclear energy. Research and policy support activities of Directorate G contribute towards achieving effective safety and safeguards systems for the
nuclear fuel cycle
The nuclear fuel cycle, also known as the nuclear fuel chain, describes the series of stages that nuclear fuel undergoes during its production, use, and recycling or disposal. It consists of steps in the ''front end'', which are the preparation o ...
, to enhance nuclear security then contributing to achieving the goal of low carbon energy production.
The research programmes are carried out at the JRC sites in Germany (Karlsruhe), Belgium (Geel), The Netherlands (Petten) and Italy (Ispra) and consist of research, knowledge management and training activities on nuclear safety and security. They are performed in collaboration and/or in support to the EU Member States and relevant international organizations. Today the Directorate G is one of the leading nuclear research establishments for nuclear science and technology and a unique provider of nuclear data measurements. Typical research and policy support activities are experimental and modelling studies covering nuclear reactor and fuel cycle safety, including current and innovative nuclear energy systems. Fundamental properties, irradiation effects and behaviour under normal and accident conditions of nuclear fuels and structural materials are studied. The activities cover also studies of structural integrity and functioning of nuclear components, emergency preparedness and radioactivity
environmental monitoring
Environmental monitoring is the processes and activities that are done to characterize and describe the state of the environment. It is used in the preparation of environmental impact assessments, and in many circumstances in which human activit ...
, nuclear waste management and decommissioning, as well as the study of non-energy technological and medical applications of radionuclides. A dedicated functional entity is devoted to the management and dissemination of knowledge and to facilitate open access to JRC nuclear facilities including training and education.
Security
Normally, entry for visitors to the ITU was by prior invitation only for security reasons; a person wishing to enter the site as a visitor will be required to hand over their passport, before passing through a combined metal and radiation detector. The details of the devices used to test visitors for radioactive and nuclear materials are not public knowledge (for security reasons). Also on entry visitors are subject to a search by a security officer. All bags are examined using an
x-ray
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 ...
machine similar to that used in an airport.
Activities
The work of the ITU can be divided into a series of smaller activities.
Alpha-immunotherapy
A
cancer
Cancer is a group of diseases involving Cell growth#Disorders, abnormal cell growth with the potential to Invasion (cancer), invade or Metastasis, spread to other parts of the body. These contrast with benign tumors, which do not spread. Po ...
treatment involving the production of
antibodies
An antibody (Ab) or immunoglobulin (Ig) is a large, Y-shaped protein belonging to the immunoglobulin superfamily which is used by the immune system to identify and neutralize antigens such as bacteria and viruses, including those that caus ...
bearing
alpha particle
Alpha particles, also called alpha rays or alpha radiation, consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus. They are generally produced in the process of alpha decay but may also be produce ...
-emitting radioisotopes which bind to
cancer cells. The idea is to create a "magic bullet" which will seek and destroy cancer wherever it is hidden within the body. This treatment has reached clinical trials.
Bismuth
Bismuth is a chemical element; it has symbol Bi and atomic number 83. It is a post-transition metal and one of the pnictogens, with chemical properties resembling its lighter group 15 siblings arsenic and antimony. Elemental bismuth occurs nat ...
-213 is one of the isotopes which has been used: this is made by the
alpha decay
Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus). The parent nucleus transforms or "decays" into a daughter product, with a mass number that is reduced by four and an a ...
of
actinium
Actinium is a chemical element; it has chemical symbol, symbol Ac and atomic number 89. It was discovered by Friedrich Oskar Giesel in 1902, who gave it the name ''emanium''; the element got its name by being wrongly identified with a substa ...
-225, which in turn is made by the irradiation of
radium
Radium is a chemical element; it has chemical symbol, symbol Ra and atomic number 88. It is the sixth element in alkaline earth metal, group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, ...
-226 with a
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 ...
.
Basic actinide research
Work has included the
superconductivity
Superconductivity is a set of physical properties observed in superconductors: materials where Electrical resistance and conductance, electrical resistance vanishes and Magnetic field, magnetic fields are expelled from the material. Unlike an ord ...
and magnetic properties of
actinides such as
plutonium
Plutonium is a chemical element; it has symbol Pu and atomic number 94. It is a silvery-gray actinide metal that tarnishes when exposed to air, and forms a dull coating when oxidized. The element normally exhibits six allotropes and four ...
and
americium
Americium is a synthetic element, synthetic chemical element; it has Chemical symbol, symbol Am and atomic number 95. It is radioactive and a transuranic member of the actinide series in the periodic table, located under the lanthanide element e ...
.
Safety of nuclear fuel
The ITU is involved in a range of different areas of research on
nuclear safety
Nuclear safety is defined by the International Atomic Energy Agency (IAEA) as "The achievement of proper operating conditions, prevention of accidents or mitigation of accident consequences, resulting in protection of workers, the public and the ...
.
Accidents
The ITU's work includes the study of fuel behaviour during "out of control nuclear-reactor" conditions.
In the 2004 annual report from the ITU some results of the PIE on PHEBUS (FPT2) fuel are reported. PHEBUS is a series of experiments where fuel was overheated and damaged under very strictly controlled conditions, in order to obtain data on what would happen in a serious nuclear power reactor accident.
Waste forms
The long-term performance of waste and the systems designed to isolate it from "man and his environment" are studied here. For instance the
corrosion
Corrosion is a natural process that converts a refined metal into a more chemically stable oxide. It is the gradual deterioration of materials (usually a metal) by chemical or electrochemical reaction with their environment. Corrosion engine ...
of
uranium dioxide
Uranium dioxide or uranium(IV) oxide (), also known as urania or uranous oxide, is an oxide of uranium, and is a black, radioactive, crystalline powder that naturally occurs in the mineral uraninite. It is used in nuclear fuel rods in nuclear reac ...
is studied at the ITU.
Spent fuel characterisation
The ITU performs
Post Irradiation Examination of spent nuclear fuel.
Partitioning and transmutation
Partitioning is the separation of nuclear wastes into different elements, see
nuclear reprocessing
Nuclear reprocessing is the chemical separation of fission products and actinides from spent nuclear fuel. Originally, reprocessing was used solely to extract plutonium for producing nuclear weapons. With commercialization of nuclear power, the ...
for more details. The ITU is involved in both
aqueous
An aqueous solution is a solution in which the solvent is water. It is mostly shown in chemical equations by appending (aq) to the relevant chemical formula. For example, a solution of table salt, also known as sodium chloride (NaCl), in wat ...
and pyro separation methods. They have published papers on the DIAMEX process.
See
nuclear transmutation
Nuclear transmutation is the conversion of one chemical element or an isotope into another chemical element. Nuclear transmutation occurs in any process where the number of protons or neutrons in the nucleus of an atom is changed.
A transmutat ...
for details.
Measurement of radioactivity in the environment
The ITU is funded by the
European Union
The European Union (EU) is a supranational union, supranational political union, political and economic union of Member state of the European Union, member states that are Geography of the European Union, located primarily in Europe. The u ...
, and theoretically has no "pro-" or "anti-nuclear" policy. The ITU is able to examine environmental samples in order to decide if dangerous levels of radioactive
contamination
Contamination is the presence of a constituent, impurity, or some other undesirable element that renders something unsuitable, unfit or harmful for the physical body, natural environment, workplace, etc.
Types of contamination
Within the scien ...
are present. For instance,
hot particles found on a beach in
Scotland
Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...
near
Dounreay
Dounreay (; ) is a small settlement and the site of two large nuclear establishments on the north coast of Caithness
Caithness (; ; ) is a Shires of Scotland, historic county, registration county and Lieutenancy areas of Scotland, lieutena ...
were examined at the ITU.
Much of this work is aimed at the measurement of very low levels of radioactivity; the ITU's analytical service uses
inductively coupled plasma mass spectrometry to measure most radioactive isotopes with greater sensitivity than those possible with direct
radiometric
Radiometry is a set of techniques for measuring electromagnetic radiation, including visible light. Radiometric techniques in optics characterize the distribution of the radiation's power in space, as opposed to photometric techniques, which ch ...
measurements.
Radioactivity in the Environment
. Itu.jrc.ec.europa.eu. Retrieved on 2011-04-16.
Nuclear security and safeguards
The ITU has a service which assists police and other law enforcement organisations by examining any seized radioactive or nuclear material. Materials are analysed to discover what they are, where they come from, and what possible use they might have been.
Karlsruhe Nuclide Chart
The ITU manages the various versions and editions of the Karlsruhe Nuclide Chart.
References
External links
Institute for Transuranium Elements
Karlsruhe Nuclide Chart
{{DEFAULTSORT:Institute for Transuranium Elements
Nuclear medicine organizations
International research institutes
Research institutes in Germany
Nuclear reprocessing sites
Nuclear technology in Germany
Nuclear research institutes