R. J. Charity, G. H. Sargsyan, K. D. Launey
et al.
Levels in 8B have been investigated experimentally using the invariant-mass technique and compared to ab initio calculations. Data sets obtained using E/A=69-MeV 9C and 13O beams on a Be target have been further analyzed to extend the level scheme of 8B for Ex<10 MeV. New levels were observed in the 2p+6Li, p+3He+alpha, and the p+7Be+gamma exit channels. Momentum correlations between the decay fragments were also investigated in order to deduce the decay pathways and whether the decays are prompt or sequential. This nucleus and its mirror were also investigated in the ab initio symmetry-adapted no-core shell model. Correspondence between the newly observed and predicted levels were made based on the level energy and the decay modes. For positive parity levels with J<=3, all predicted levels can be connected to an experimental counter part (as least tentatively) for Ex<8.4 MeV.
In the article ESEARCH ON AN IMPROVED PARTICLE SWARM OPTIMIZATION ALGORITHM FOR INVERSION OF ELEMENT YIELD IN PULSE NEUTRON GAMMA FORMATION ELEMENT LOGGING by Bo XIE, Lijiao ZHANG, and Shangping XIE published in the journal Nuclear Technology & Radiation Protection, 40 (2025), 1, pp. 37-46, a mistake in the title occured. It should be as follows: RESEARCH ON AN IMPROVED PARTICLE SWARM OPTIMIZATION ALGORITHM FOR INVERSION OF ELEMENT YIELD IN PULSE NEUTRON GAMMA FORMATION ELEMENT LOGGING Editorial Board offers an apology for this mistake to the authors and readers of the Nuclear Technology & Radiation Protection journal. Link to the corrected article 10.2298/NTRP2501037X
BINGO is a project aiming to set the grounds for large-scale bolometric neutrinoless double-beta-decay experiments capable of investigating the effective Majorana neutrino mass at a few meV level. It focuses on developing innovative technologies (a detector assembly, cryogenic photodetectors and active veto) to achieve a very low background index, of the order of $10^{-5}$ counts/(keV kg yr) in the region of interest. The BINGO demonstrator, called MINI-BINGO, is designed to investigate the promising double-beta-decay isotopes $^{100}$Mo and $^{130}$Te and it will be composed of Li$_2$MoO$_4$ and TeO$_2$ crystals coupled to bolometric light detectors and surrounded by a Bi$_4$Ge$_3$O$_{12}$-based veto. This will allow us to reject a significant background in bolometers caused by surface contamination from $α$-active radionuclides by means of light yield selection and to mitigate other sources of background, such as surface contamination from $β$-active radionuclides, external $γ$ radioactivity, and pile-up due to random coincidence of background events. This paper describes an R\&D program towards the BINGO goals, particularly focusing on the development of an innovative assembly designed to reduce the passive materials within the line of sight of the detectors, which is expected to be a dominant source of background in next-generation bolometric experiments. We present the performance of two prototype modules -- housing four cubic (4.5-cm side) Li$_2$MoO$_4$ crystals in total -- operated in the Canfranc underground laboratory in Spain within a facility developed for the CROSS double-beta-decay experiment.
Wojciech Brylinski, Marek Gazdzicki, Francesco Giacosa
et al.
Recently, the NA61/SHINE collaboration at the CERN SPS reported evidence of isospin-symmetry violation in high-energy nuclear collisions [Nature Commun. 16, 2849 (2025)]. The effect was observed in the relative yields of charged and neutral kaons and cannot be explained by known sources of isospin symmetry breaking. In this work, we extend the theoretical and phenomenological aspects of that study. We discuss the historical background and introduce the concepts of isospin transformations and symmetry. Importantly, we relate isospin symmetry to the QCD flavor symmetry, and we present both conceptual and analytical proofs demonstrating the equality of the mean multiplicities of charged and neutral kaons for an initial ensemble of colliding systems that is invariant under charge-symmetry transformation.
In the articles THERMAL-HYDRAULIC ANALYSIS OF LIGHT WATER REACTORS UNDER DIFFERENT STEADY-STATE OPERATING CONDITIONS Part 1 - Boiling Water Reactor by Ezddin HUTLI 1 and Ramadan KRIDAN 2 and THERMAL-HYDRAULIC ANALYSIS OF LIGHT WATER REACTORS UNDER DIFFERENT STEADY-STATE OPERATING CONDITIONS Part 2 - Pressurized Water Reactor by Ezddin HUTLI 1 and Ramadan KRIDAN 2 published in the journal Nuclear Technology & Radiation Protection, 37 (2022), 4, pp. 259-275, and pp. 276-288, the authors' affiliations are incompletely listed. In both articles, the affiliations should have read as follows: Ezddin HUTLI 1,2 and Ramadan KRIDAN 3 1 Centre for Energy Research (CER), Budapest, Hungary 2 Institute of Nuclear Techniques, Budapest University of Technology and Economics, Budapest, Hungary 3 Department of Nuclear Engineering, Faculty of Mechanical Engineering, Al-Fattah University, Tripoli, Libya Editorial Board offers an apology for this mistake to the articles' writers and the readers of the Nuclear Technology & Radiation Protection journal. <br><br><font color="red"><b> Link to the corrected article <u><a href="http://dx.doi.org/10.2298/NTRP2204259H">10.2298/NTRP2204259H</a></b></u> <br><br><font color="red"><b> Link to the corrected article <u><a href="http://dx.doi.org/10.2298/NTRP2204276H">10.2298/NTRP2204276H</a></b></u>
Editorial Board of the Nuclear Technology & Radiation Protection journal regrets to inform the audience of the journal that in the list of authors of the article STUDY ON OCCUPATIONAL EXPOSURE OF MEDICAL STAFF CAUSED BY INDUCED RADIOACTIVITY IN THE TREATMENT ROOM OF MEDICAL HEAVY-ION FACILITY by Changli LUO, Wuyuan LI, Bo YANG, Youwu SU, Yang LI, Shakhboz KHASANOVA, Wang MAO, Xuebo LIU, Weiwei YAN, Zongqiang LI published in the Vol. 38 (2023), 1, pp. 39-47, was made a mistake concerning the sixth author's name. It should be as follows: Shakhboz KHASANOV Editorial Board offers an apology for this mistake to Mr. Shakhboz Khasanov and the readers of the Nuclear Technology & Radiation Protection journal. <br><br><font color="red"><b> Link to the corrected article <u><a href="http://dx.doi.org/10.2298/NTRP2301039L">10.2298/NTRP2301039L</a></b></u>
Novel transverse-momentum technique is used to analyse charged-particle exclusive data for collective motion in the Ar+KCl reaction at 1.8 GeV/nucl. Previous analysis of this reaction, employing the standard sphericity tensor, revealed no significant effect. In the present analysis, collective effects are observed, and they are substantially stronger than in the Cugnon cascade model, but weaker than in the hydrodynamical model.
V. A. Plujko, O. M. Gorbachenko, K. M. Solodovnyk
et al.
The average gamma-ray spectrum $^{114}$Cd after thermal neutron capture in $^{113}$Cd was evaluated in units of mb/MeV. Two approaches are considered for estimation of the average gamma-ray spectrum with normalization of the experimental data: mean spectra for all gamma-energies were found by averaging frequency polygon for experimental data histogram, and mean spectra were estimated as the combination of theoretical values at low gamma-ray energies and averaging experimental data in high-energy range. The experi mental spectra were evaluated from the gamma-intensities presented by Mheemeed et al. [A. Mheemeed et al., Nucl. Phys. A 412 (1984) 113] and Belgya et al [T. Belgya et al., EPJ Web of Conf. 146 (2017) 05009]. They were normalized to the average theoretical spectrum which was calculated using EMPIRE and TALYS codes. The procedure of normalization of the high-energy part of the spectrum was described. Estimated $γ$- spectra for $^{113}$Cd(n,{x$γ$}) reaction induced by thermal neutrons were presented.
We report the measurement of reaction cross sections ($σ_R^{\rm ex}$) of $^{27,29}$F with a carbon target at RIKEN. The unexpectedly large $σ_R^{\rm ex}$ and derived matter radius identify $^{29}$F as the heaviest two-neutron Borromean halo to date. The halo is attributed to neutrons occupying the $2p_{3/2}$ orbital, thereby vanishing the shell closure associated with the neutron number $N = 20$. The results are explained by state-of-the-art shell model calculations. Coupled-cluster computations based on effective field theories of the strong nuclear force describe the matter radius of $^{27}$F but are challenged for $^{29}$F.
In the article A COMPARATIVE STUDY BETWEEN NANO-CADMIUM OXIDE AND LEAD OXIDE REINFORCED IN HIGH DENSITY POLYETHYLENE AS GAMMA RAYS SHIELDING COMPOSITES by Gharam A. ALHARSHAN, Dalal A. ALORAINI, Mohamed Abd ELZAHER, Mohamed S. BADAWI, Mahmoud T. ALABSY, Mahmoud I. ABBAS, and Ahmed M. EL-KHATIB published in the journal Nuclear Technology & Radiation Protection, 35 (2020), 1, pp. 42-49, the authors omitted the acknowledgement.
Editorial Board of the Nuclear Technology & Radiation Protection regrets to inform the audience of the journal that in the previous issue of this year (Nucl Technol Radiat, Vol. XXXIV, No. 1, 2019) two errors were made in the names of the authors of the articles. <br><br><font color="red"><b> Link to the corrected article <u><a href="http://dx.doi.org/10.2298/NTRP180621001A">10.2298/NTRP180621001A</a></b></u> <br><br><font color="red"><b> Link to the corrected article <u><a href="http://dx.doi.org/10.2298/NTRP180718017S">10.2298/NTRP180718017S</a></b></u>
We discuss the impact of the uncertainty ($\pm 8$ keV) in the excitation energy of the astrophysically important 6.356 MeV $1/2^+_2$ state of $^{17}$O on the precision with which the Coulomb reduced ANC ($\widetilde{C}$) for the $\left<^{17}\mathrm{O}(1/2^+_2) \mid \protect{^{13}\mathrm{C}} + α\right>$ overlap can be extracted from direct reaction data. We find a linear dependence of $\widetilde{C}^2$ on the binding energy, the value extracted varying by a factor of 4 over the range $E_{\mathrm{ex}} = 6.356$ -- $6.348$ MeV. This represents an intrinsic limit on the precision with which $\widetilde{C}^2$ can be determined which cannot be improved unless or until the uncertainty in $E_{\mathrm{ex}}$ is reduced.
In this study, we describe a procedure of topology optimization in the framework of the linear Boltzmann equation, implemented using a reference Monte-Carlo particle transport code. This procedure can design complex structures that optimize the transport of particles, according to preset objectives and constraints. Although simple and perfectible, this procedure was successfully tested on a series of difficult problems, with results outperforming human capabilities. Improved, it could be used to assist or automate the design of particle optics or nuclear devices.
Commentary on the article entitled ?The spatial and urban planning concerns related to nuclear facilities locations - Case Study of the Vinca Institute Location? by Nebojsa D. STEFANOVIC, Natasa M. DANILOVIC HRISTIC, and Bosko D. JOSIMOVIC published in the journal Nuclear Technology & Radiation Protection: Year 2017, Vol. 32, No. 1, pp. 99-108
J. Scherzinger, R. Al Jebali, J. R. M. Annand
et al.
The response of a NE-213 liquid-scintillator detector has been measured using tagged neutrons from 2--6 MeV originating from an Am/Be neutron source. The neutron energies were determined using the time-of-flight technique. Pulse-shape discrimination was employed to discern between gamma-rays and neutrons. The behavior of both the fast (35 ns) and the combined fast and slow (475 ns) components of the neutron scintillation-light pulses were studied. Three different prescriptions were used to relate the neutron maximum energy-transfer edges to the corresponding recoil-proton scintillation-light yields, and the results were compared to simulations. Parametrizations which predict the fast or total light yield of the scintillation pulses were also tested. Our results agree with both existing data and existing parametrizations. We observe a clear sensitivity to the portion and length of the neutron scintillation-light pulse considered.
Makoto Tabata, Akihisa Toyoda, Hideyuki Kawai
et al.
This study presents the development of hydrophobic silica aerogel for use as a radiator in threshold-type Cherenkov counters. These counters are to be used for separating positrons and positive muons produced by kaon decay in the J-PARC TREK/E36 experiment. We chose to employ aerogel with a refractive index of 1.08 to identify charged particles with momenta of approximately 240 MeV/$c$, and the radiator block shape was designed with a trapezoidal cross-section to fit the barrel region surrounding the kaon stopping target in the center of the TREK/E36 detector system. Including spares, we obtained 30 crack-free aerogel blocks segmented into two layers, each layer having a thickness of 2 cm and a length of 18 cm, to fill 12 counter modules. Optical measurements showed that the produced aerogel tiles had the required refractive indices and transparency.
We present a nucleon-nucleon potential at fifth order in chiral effective field theory. We find a substantial improvement in the description of nucleon-nucleon phase shifts as compared to the fourth-order results of Ref. [E. Epelbaum, H. Krebs, U.-G. Meißner, arXiv:1412.0142 [nucl-th]]. This provides clear evidence of the corresponding two-pion exchange contributions with all low-energy constants being determined from pion-nucleon scattering. The fifth-order corrections to nucleon-nucleon observables appear to be of a natural size which confirms the good convergence of the chiral expansion for nuclear forces. Furthermore, the obtained results provide strong support for the novel way of quantifying the theoretical uncertainty due to the truncation of the chiral expansion proposed in Ref. [E. Epelbaum, H. Krebs, U.-G. Meißner, arXiv:1412.0142 [nucl-th]]. Our work opens up new perspectives for precision ab initio calculations in few- and many-nucleon systems and is especially relevant for ongoing efforts towards a quantitative understanding the structure of the three-nucleon force in the framework of chiral effective field theory.
Bernard Borderie, S. Piantelli, M. F. Rivet
et al.
Simulations based on experimental data obtained from multifragmenting quasi-fused nuclei produced in central $^{129}$Xe + $^{nat}$Sn collisions have been used to deduce event by event freeze-out properties in the thermal excitation energy range 4-12 AMeV [Nucl. Phys. A809 (2008) 111]. From these properties and the temperatures deduced from proton transverse momentum fluctuations, constrained caloric curves have been built. At constant average volumes caloric curves exhibit a monotonic behaviour whereas for constrained pressures a backbending is observed. Such results support the existence of a first order phase transition for hot nuclei.
Ephraim Fischbach, J. Thomas Gruenwald, Daniel Javorsek,
et al.
We show that apparently conflicting results on the time-variation of the measured Cl-36 decay rates can be readily understood as arising from solar variability beyond the simple Earth-Sun distance model, and hence are not an indication of instrumental effects.
Total reaction cross sections of light projectile nucleus (H-2, H-3, He-3 and He-4) interactions with nuclei are calculated using Geant4 models, and compared with experimental data. It is shown that the models give various predictions at low energies, in the region of the Coulomb barrier. "Shen model" (W.-Q. Shen et al., Nucl. Phys. {\bf A491} (1989) 130) is identified as an improvement over other models.