[en] With the advent of the Spiral-2 linear accelerator and the associated S3 spectrometer at the Ganil laboratory in France, new realms of intermediate-mass Ν=Ζ and very heavy nuclei will soon become available for research in nuclear structure. After their production and selection in the spectrometer, the ions of interest will be stopped in a buffer gas, neutralised, resonantly re-ionised, cooled and bunched. This will bring us in an adequate position to perform laser spectroscopy, mass measurements and decay spectroscopy of their ground and isomeric states. In this contribution we report on the ongoing commissioning of the detector set-up. (author)

[en] This paper presents the calculated results of the thermal neutron inelastic scattering cross sections of Bismuth and Sapphire crystals. In these calculations, the effects of thermal neutron scattering on crystal’s phonon vibration and lattice parameters were taken into account by using the NJOY code. These calculated results were updated into the related ACE format data file for MCNP simulation of thermal neutron beams filtered at the Dalat research reactor. (author)

[en] Since 1996, gaining the approval of Ministry of Science and Technology, Vietnam Conference on Nuclear Science and Technology (VINANST) has been successfully co-organized by Vietnam Atomic Energy Institute (VINATOM) and Vietnam Atomic Energy Society (VAES). As a biennial event, the conference aims to bring together Vietnamese scientists as well as foreign specialists for the exchange of information on the latest research findings and applications in the field of nuclear science and technology, and hence, to foster research and business partnerships among the Institutes, universities and the industry. In addition, VINANST is considered to provide an ideal opportunity for young researchers to approach great sources of specialized knowledge and a range of competencies and skills in their particular disciplines. Following the success of VINANST-12, the conference VINANST-13 has taken place in Halong Bay, a World Heritage site in Vietnam on 7-9 August 2019 in close collaboration between VINATOM and Quang Ninh Department of Science and Technology. As usual, the event held attention for domestic and international experts, scientists, senior managers, researchers, especially representatives from IAEA and its Member States with developed nuclear science and technology.

[en] The momentum distribution of residual fragments from knockout reactions provides information on the wave function of incident nuclei. This is important data to study nuclear structure. This report presents details of the experimental set-up and momentum distribution analysis results of ⁴⁹Cl from SEASTAR (“Shell Evolution and Systematic Search for 2⁺₁ Energies”) experiments, performed at RIKEN, Japan. The experiment used SAMURAI spectrometer, which is characterized by a large angular- and momentum- acceptance, multi-particle detection in coincidence. ⁴⁹Cl isotope was a product of knockout reactions on a hydrogen target. (author)

[en] Calculations and design for development of a new thermal neutron beam have been carried out at the horizontal channel No.1 of the Dalat research reactor. This thermal neutron beam is expected to be open for research and education on experimental neutron physics at the Dalat Nuclear Research Institute. The results of optimal beam design and Monte Carlo simulations are presented in this report. (author)

[en] SERPENT, a continuous-energy Monte Carlo Reactor Physics burnup calculation code, was used to create a reactor core that approximates available information on the KLT- 40S reactor. Fission product inventory and decay heat values were extracted from the results and fed into ASTEC (Accident Source Term Evaluation Code), alongside other required physical parameters. A vessel break was simulated to obtain the accident progression and amount of volatile fission products released. These values were then fed into ARGOS, which is an atmospheric dispersion code based on the RIMPUFF (Riso Mesoscale PUFF) model, as the accident source term. The regional radiological impact of the accident was investigated for a hypothetical location and date of the accident, based on real weather data.(author)

[en] In order to investigate on hydrodynamic phenomena in two-phase flow conditions in nuclear safety analysis, a series of two-phase flow experiments were conducted using a single flow channel in which air and water were simultaneously injected into the test section. The experiments under atmospheric pressure condition were carried out with the water velocity and the air velocity covering the ranges from 0.2 to 1.5 m/s and 0.05 to 0.2 m/s respectively. The technique of two-sensor conductivity probe was used for the measurement of bubble parameters The experimental results presented in this study are the local time-averaged void fraction, bubble velocities at three axial positions L/D = 10, 50 and 70.(author)

[en] This paper presents the development of simulated workplace neutron standard fields at the Institute for Nuclear Science and Technology with the ²⁴¹Am-Be source moderated by polyethylene spheres with diameters of 15 cm and 30 cm. The characterization of the standard fields (in terms of neutron fluence rates and neutron ambient dose equivalent rates) was performed using Bonner sphere spectrometer system together with MAXED and FRUIT unfolding codes. The related quantities such as neutron dose equivalent-averaged energies and fluence-to-ambient dose equivalent conversion coefficients were also determined. The discrepancies of values are satisfied the standard uncertainty criteria as recommended by the International Standard Organization 12789 series. It implies that the simulated workplace neutron standard fields can be applied in the practical works for calibration purposes. (author)

[en] The emerging photo-fission experimental campaign with the gamma beam system at ELI-NP is presented along with the physics cases to be addressed, with emphasis on prepared day-one experiments. The design of the state-of-the-art detector arrays, which are under construction for such experiments, is reported. The results of the performance tests of the constructed prototypes are presented. Plans for further extension of the photo-fission experimental programme at ELI-NP are discussed. (author)

[en] Radioactive iodine (RAI) refractoriness is a serious disease with poor prognosis and more frequent in older patients, in those with large metastases, in poorly differentiated thyroid cancer, and in those tumors with high 18-fluordeoxyglucose uptake on PET/CT. These patients have a 10-year survival rate of less than 10%. Many patients may survive in the absence of treatment for years with a stable or slowly progressive disease. However, a few patients may require treatment when the tumor burden is large and when progression has been documented. For these reasons, it is important to adequately select patients who should be treated and then manage them with an interdisciplinary approach. Our paper outlines the diagnostic and therapeutic strategies in radioactive iodine refractory patients. (author)