On October 16, 2023, a change took place in the position of Deputy Director for Science at NCBJ. The former director, Professor Ewa Rondio, passed on her duties to Professor Agnieszka Pollo, an astrophysicist who has been successfully leading the rapidly developing Department of Astrophysics.

The team of researchers from France, Poland, and the United Kingdom has proposed a new hypothesis suggesting that interactions between dark matter and neutrinos could shed light on certain anomalies in the distribution of the cosmic microwave background radiation. The details of the analysis have been described in articles published in the prestigious scientific journals, Monthly Notices of the Royal Astronomical Society: Letters and Physics of the Dark Universe.

On October 27, after a modernization break, the MARIA research reactor resumed operation. Thus, the long-awaited production of radioisotopes began again, mainly for medical purposes. In a special letter, the director of NCBJ thanked the people involved in the complex modernization works.

The ceremony for the signing of the Polish-Japanese Memorandum of Cooperation (MoC) in the field of High-Temperature Gas-Cooled Reactors (HTGR) between the Ministry of Climate and Environment and the Japanese Ministry of Education, Culture, Sports, Science, and Technology (MEXT) took place on November 16th, 2023. NCBJ is the main implementing institution of the agreement on the Polish side.

Defects in the crystal structure of semiconductors used in space and nuclear industry can have an impact on the functioning of devices built with them. A master's student from Instituto Superior Técnico in Portugal, in collaboration with NCBJ scientists, investigated defects that arise in gallium nitride when bombarded with argon. The use of the McChasy computer program developed in Świerk was a crucial aspect of the research.

The Main Prize in the 19th edition of the Science Popularizer competition was awarded to the Education and Training Division Team at NCBJ. The award was given "For their longstanding contributions to popularizing knowledge about ionizing radiation, radioactivity, nuclear energy, and natural radioactivity. These efforts are of particular significance in the context of implementing Poland's energy transformation program." The competition has been organized for almost 20 years by the Polish Press Agency. In previous years, the institute and its employees have been nominated and awarded multiple times.

A comprehensive methodology for computational fluid dynamics (CFD) has been developed in research conducted at the National Centre for Nuclear Research to accurately model turbulent flow and heat exchange phenomena in tightly packed fuel assembly geometry. These efforts were recognized at the international SCOPE conference.

In early December, the ATF Cladding project, jointly submitted by scientists from Poland and South Korea, was approved for implementation. The National Centre for Nuclear Research (NCBJ) represents the Polish side, while the consortium includes Seoul National University, the Korean Atomic Energy Research Institute, and DAEKYUNG TECH & TESTERS on the Korean side. The aim of the project is to perform a detailed study on the structural stability and associated changing functional properties of a new type of fuel cladding jackets coated with a protective layer, designed for nuclear reactors. These materials will enhance the tolerance to nuclear events of such components and are called Accident Tolerant Fuel.

The CERAD cyclotron, designed and built by the Belgian company IBA (Ion Beam Applications S.A.), has been installed at the National Centre for Nuclear Research (NCBJ). The cyclotron will accelerate protons and alpha particles to an energy of 30 MeV and deuterons to an energy of 15 MeV. By bombarding appropriately selected targets with these particles, it will be possible to produce radionuclides such as 89Zr or 211At, which have not been produced at NCBJ to date and have not been widely available in Poland. Thanks to the new device in Świerk, it will be possible to conduct research on new radiopharmaceuticals, in particular those that will be specially designed for the needs of individual patients.

A third comprehensive X-ray scanner for non-intrusive inspection of large-scale goods for the detection of threats or smuggling attempts has been delivered to the Polish border. The new MultiControl CanisMatic Rail device will operate at the Hrubieszów railway border crossing. Like the two previous devices already operating in Kuźnica Białostocka and Korsze, it is the work of the Polish company MultiControl sp. z o.o., and was created thanks to advanced NCBJ technology.