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  1. Neutron data

    The JRC is by far the largest provider of neutron data in the European Union. The data is generated by measurements at its two large-scale particle accelerators, and is used for the safe operation of nuclear reactors, handling of nuclear waste and investi ...

    22 June 2015

  2. EUFRAT Program Advisory Committee meeting

    05 Jul 2016 JRC-Geel is organising the 5th Project Advisory Committee meeting of the EUFRAT Transnational Access project on July 5, 2016. The Joint Research Centre, in Geel is running a successful open access programme, entitled 'European Facilities ...

    16 June 2016

  3. New light on how nuclear fission fragments cool down

    16 Jun 2016 In close collaboration with the Swedish University of Chalmers, JRC scientists investigated prompt fission gamma-ray spectra from plutonium isotopes to reduce statistical uncertainties on the model parameters.  The investigation of prompt fiss ...

    16 June 2016

  4. Neutron multiplicity counting

    Neutron multiplicity counting is a technique used for non-destructively assaying the quantity of fissile material such as, e.g. uranium (U), plutonium (Pu), californium (Cf), etc. Neutron multiplicity counting is based upon the fact that neutrons from spo ...

    20 May 2016

  5. Target Preparation laboratory

    The JRC produces and characterises a variety of targets for high-precision measurements of neutron-reaction data at the GELINA and Van de Graaff accelerators. Targets The targets are thin stable deposits of 6,7,nat LiF, metallic Li, 10 B, tristearine or t ...

    14 July 2014

  6. Evaluation of Am-Li Neutron Spectra Data for Active Well Type Neutron Multiplicity Measurements of Uranium

    Safeguarding nuclear material is an important and challenging task for the international community. One particular safeguards technique commonly used for uranium assay is active neutron correlation counting. This technique involves irradiating unused uran ...

    17 June 2016

  7. Linear electron accelerator facility

    GELINA Among the pulsed white spectrum neutron sources available in the world, the linear electron accelerator facility at IRMM (Gelina) is the one with the best time resolution. Gelina combines four specially designed and distinct units: a high-power pul ...

    07 May 2014

  8. Van de Graaff accelerator

    Van de Graaff The high intensity quasi mono-energetic neutron source at IRMM is driven by a vertical 7 MV Van de Graaff accelerator producing either continuous or pulsed ion beams. The installation has two pulsing systems. One is a fast beam pulsing gener ...

    07 May 2014

  9. HADES underground laboratory

    HADES IRMM operates a laboratory for ultra-sensitive radioactivity measurements inside the 225 m deep underground laboratory HADES, which is operated by EURIDICE (www.euridice.be) and located at the premises of the Belgian Nuclear Research Centre (www.sck ...

    12 June 2014

  10. Radionuclide metrology laboratories

    The radionuclide metrology sector was the first to be established at JRC-Geel in 1959 (at that time called CBNM – Central Bureau for Nuclear Measurements). Its main objective was the accurate measurement of radioactivity and decay properties of radionucli ...

    07 May 2014

  11. Finite size effects in chains of antiferromagnetically coupled spins

    The current race into miniaturization of magnetic devices for information storage and processing is reaching the ultimate limit of few atoms per magnetic unit, a promising new route being offered by the exploitation of the spins of atoms organized in shor ...

    24 June 2016

  12. Exploring actinide magnetism with XMCD

    Experiments performed on AmFe2 have demonstrated that magnetic dipole term of actinide materials can be determined by x-ray magnetic circular dichroism (XMCD) together with the spin and orbital magnetic moments. Accessing this information with a single ex ...

    24 June 2016

  13. A novel method to produce homogeneous certified reference materials for neutron activation analysis

    14 Jan 2016 Scientists from the JRC, in collaboration with colleagues from the University of Leoben (Austria), the Atomic Centre Bariloche (Argentina) and Umicore (Belgium) developed a novel approach for the production of an Al-Au alloy certified referenc ...

    14 January 2016

  14. Local even-odd effect based on the number of configurations of pre-formed and formed fragmentations in a fissioning nucleus

    In the present paper a new model of the local even-odd effect is proposed. This modeling takes into account the number of configurations in a nucleus undergoing fission at two stages along its fission path. One is the fissioning nucleus stage just after p ...

    15 May 2016

  15. JRC researchers improve the methodology for the analysis of cross section measurements at a cold neutron beam

    16 Nov 2015 In close collaboration with international nuclear research organisations, scientists from the JRC described a method to improve the analysis of cross section measurements at a cold neutron beam. This work is part of the JRC contribution to imp ...

    16 November 2015

  16. Study on the total excitation energy of accelerated fragments

    15 Oct 2015 The partition of the total excitation energy of fission fragments at scission is a crucial quantity for the determination of e.g. prompt emission of neutrons. Scientists from the JRC  in close collaboration with the University of Bucharest and ...

    15 October 2015

  17. Neutron Resonance Densitometry workshop

    04 Mar 2015 to 05 Mar 2015 The JRC and the Japanese Atomic Energy Agency (JAEA- Integrated Support Centre for Nuclear Nonproliferation and Nuclear Security (ISCN) and Nuclear Science and Engineering Centre (NSEC)) are pleased to announce a workshop on tec ...

    30 January 2015

  18. Comparison of resonance integrals of cross sections from JEFF-3.2 library for some problematic reactions

    The quality of the capture cross sections in JEFF-3.2 for a selection of nuclides has been assessed in comparison to other evaluated nuclear data libraries (ENDF/B-VII.1, JENDL-4.0, TENDL-2014 and IRDFF v1.05). The incident neutron capture reactions of th ...

    02 April 2016

  19. The 3rd Neutron Resonance Analysis School

    15 Dec 2014 to 19 Dec 2014 The Third Neutron Resonance Analysis School will be hosted at the JRC-IRMM in Geel, Belgium. Previous schools took place in 2008 and 2011. The school is organised within the FP7 project CHANDA (Solving Challenges in Nuclear Data ...

    08 December 2014

  20. Fragment-mass, kinetic energy, and angular distributions for 234U(,) at incident neutron energies from n = 0.2 MeV to 5.0 MeV

    This work investigates the neutron-induced fission of 234U and the fission-fragment properties for neutron energies between n = 0.2 MeV and 5.0 MeV with a special highlight on the prominent vibrational resonance at n = 0.77 MeV. Angular-, energy- and mass ...

    10 March 2016

  21. Measurement of the 477.6-keV γ-ray production cross section following inelastic neutron scattering by 7Li

    The γ-ray production cross section for the 477.6-keV 1/2− → 3/2−g.s. transition in 7Li following inelastic neutron scattering has been measured from the reaction threshold up to 18 MeV. This cross section is interesting as a possible standard for other γ- ...

    25 March 2016

  22. First results from the new double velocity-double energy spectrometer VERDI

    The VERDI spectrometer (VElocity foR Direct mass Identification) is a two arm time-of-flight spectrometer built at the European Commission Joint Research Centre IRMM. It determines fragment masses and kinetic energy distributions produced in nuclear fissi ...

    04 March 2016

  23. Calibration with MCNP of NaI detector for the determination of natural radioactivity levels in the field

    In view of assessing natural radioactivity with on-site quantitative gamma spectrometry, efficiency calibration of NaI(Tl) detectors is investigated. A calibration based on Monte Carlo simulation of detector response is proposed, to render reliable quanti ...

    12 March 2016

  24. Characterization of special nuclear material by neutron resonance spectroscopy

    Neutrons can be used as a tool to study materials and objects. Cross sections of neutron induced reactions show characteristic resonance structures which can be used as fingerprints to determine the elemental and isotopic composition of materials and obje ...

    27 January 2016

  25. Technique of neutron resonance transmission analysis for active neutron NDA

    Neutron Resonance Transmission Analysis (NRTA) is a Non-Destructive Analysis (NDA) technique that relies on the use of resonance structures in neutron induced reaction cross sections. An active NDA system based on NRTA is under development to identify and ...

    23 January 2016