Jožef Stefan Institute

The Jožef Stefan Institute (IJS) (Slovene: Institut "Jožef Stefan") is the largest research institute in Slovenia. The main research areas are physics, chemistry, molecular biology, biotechnology, information technologies, reactor physics, energy and environment. At the beginning of the 2013 the institute had 962 employees, 404 of them were Ph.D scientists.

Jožef Stefan Institute
Institut "Jožef Stefan"
TypeResearch institute
Established1949 (1949)

The mission of the Jožef Stefan Institute is the accumulation and dissemination of knowledge at the frontiers of natural science and technology to the benefit of society at large through the pursuit of education, learning, research, and development of high technology at the highest international levels of excellence.


The institute was founded by the State Security Administration (Yugoslavia) in 1949 for atomic weapons research. Initially, the Vinča Nuclear Institute in Belgrade was established in 1948, followed by Ruđer Bošković Institute in Zagreb in 1950 and the Jožef Stefan Institute as an Institute for Physics in the Slovenian Academy of Sciences and Arts. It is named after the distinguished 19th-century physicist Josef Stefan (Slovene: Jožef Stefan), best known for his work on the Stefan–Boltzmann law of black-body radiation.

IJS is today involved in a wide variety of fields of scientific and economic interest. After close to 60 years of scientific achievement, the institute has become part of the image of Slovenia.

Over the last 60 years it has created a number of important institutions, such as the University of Nova Gorica, the Jožef Stefan International Postgraduate School[1] and the Ljubljana Technology park.[2]



The institute has facilities in two locations. The main facilities and the headquarters are on Jamova 39 in Ljubljana, the other location is the Institute's Reactor Center Podgorica located in Brinje, Dol pri Ljubljani near Ljubljana.

Research reactorEdit

The institute's Reactor Center Podgorica is home to a pool type research reactor. The General Atomics TRIGA Mark II reactor is rated for a nominal 250 kW thermal. The reactor was first licensed in 1966 and is expected to continue operation at least into the 2030s.[3]

The Central Radioactive Waste Storage of Slovenia is co-located at the Institute's reactor facility. in Brinje is used for storage of the low and intermediate level solid radioactive waste from the Reactor Center and other, non-Institute small waste producers such as medical, research, and industrial applications of ionising radiation.[3]

Selection of online services from the instituteEdit


  1. ^ "The 2013/2014 CALL FOR ENROLMENT to postgraduate study programmes". Jožef Stefan International Postgraduate School.
  2. ^ "Tehnološki Park Ljubljana".
  3. ^ a b Slovenian Nuclear Safety Administration. Slovenian Report on Nuclear Safety. Slovenian 8th National Report as Referred in Article 5 of the Convention on Nuclear Safety. July 2019.

External linksEdit

Coordinates: 46°2′32.29″N 14°29′15.97″E / 46.0423028°N 14.4877694°E / 46.0423028; 14.4877694