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Sorin Gabriel Pascu (Horia Hulubei National Institute of Physics and Nuclear Engineering (RO))27/04/2026, 13:00
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Vassil Karayonchev27/04/2026, 13:25
In this talk, the current status of the FATIMA array will be presented. Recent highlights from experiments performed at GSI Helmholtz Centre for Heavy Ion Research will be discussed, demonstrating the performance of the array under in-beam conditions. Ongoing efforts to upgrade the array, including developments in the data acquisition system and detector technology, will be outlined. Future...
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Dr Marek Stryjczyk (Institut Laue-Langevin (FR))27/04/2026, 13:50
Nuclear lifetimes are one of the key observables providing a direct access to the structure of excited states. The commonly used technique that allows for their extraction is the fast-timing method which benefits from the use of fast scintillators. However, it also requires large datasets collected by highly granular setups. This limitation can be overcome by using a strong flux of thermal...
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Simone Bottoni (Università degli Studi e INFN Milano (IT))27/04/2026, 14:15
In this work, we present recent results obtained in different neutron-induced fission campaigns at Lohengrin (ILL), using a hybrid setup made of HPGe clover detectors and LaBr3 scintillators. The latter were employed to measure lifetimes, down to a few ps, using γ-ray fast-timing techniques [1]. In particular, results on $^{131}$Sb [2] and $^{96}$Rb [3] will be discussed. In the first case,...
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Pär-Anders Söderström (ELI-NP/IFIN-HH)27/04/2026, 15:10
While the $\gamma$-ray beams at ELI-NP are still under implementation, the instrumentation for nuclear structure and reaction studies at the $\gamma$-ray beam facilities are already completed and operational. Some of the scientific cases at ELI-NP will be the measurement of electromagnetic dipole response and strength distribution in different nuclei, pygmy dipole resonance excitations and...
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Ms Rashmi Umashankar (TRIUMF/UBC)27/04/2026, 15:35
Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei (GRIFFIN) is a high-efficiency gamma-ray spectrometer designed for use in decay spectroscopy experiments with low-energy radioactive ion beams provided by TRIUMF’s Isotope Separator and Accelerator (ISAC-I) facility in Vancouver, Canada. The 16 Compton suppressed HPGe clover detectors are complemented by a fast-timing array...
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Dr Pete Jones (iThemba LABS, National Research Foundation (ZA))27/04/2026, 16:00
The Portable African Neutron-Gamma Laboratory for Innovative Nuclear Science (PANGoLINS) [1] project aims to investigate measurements of both gamma rays and neutrons which forms an important component part on site or in transit and the detection of both fissile material for the use in decarbonised energy sources or disposal thereof. A core component of the project is to miniaturize the weight...
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Andrej Špaček (Heavy Ion Laboratory at the University of Warsaw)27/04/2026, 16:20
The EAGLE array (European Array for Gamma Levels Evaluations) [1] is a multi-configuration detector setup for in-beam nuclear spectroscopy studies at the Heavy Ion Laboratory (HIL) of the University of Warsaw. It can accommodate up to 30 Compton-suppressed HPGe detectors.
Building on this foundation, a new campaign, FLASH (Fast-Timing LaBr$_3$ Array for Spectroscopy at HIL), is planned...
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Nikita Bernier (Universidad Complutense (ES))27/04/2026, 16:40
The ISOLDE facility at CERN is one of the most versatile and prolific facilities worldwide for the production of exotic isotopes using the Isotope Separation On-Line (ISOL) method. The HIE-ISOLDE project has realized a cutting-edge superconducting post-accelerator capable of delivering radioactive ion beams with energies up to 10 MeV/u, making ISOLDE a unique facility worldwide to accelerate...
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Volker Werner (TU Darmstadt)28/04/2026, 09:30
With the advent of relatively high-energy resolution (around 2-3 %) fast scintillators the use of fast timing techniques has had a revival in the past two decades, and led to a large number of efforts in instrumentation and development of techniques in almost all laboratories for nuclear spectroscopy. This includes stable beam facilities as well as the most advanced rare-isotope...
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Dr Stefan Lalkovski (Sofia University)28/04/2026, 09:55
j-1 anomaly remains a mystery [1] 60 years after the first observations that something is not quite right with the low-energy poitive-parity states in the odd-A medium-mass Ag nuclei. Within the Shell model, nuclei with three particles or holes on g9/2, should have 9/2+ as their lowest-lying state. Instead, these nuclei have 7/2+ at even lower energies, which is considered to be anomalous...
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Rob Shearman28/04/2026, 10:20
For over a decade, the National Physical Laboratory in Teddington UK has used novel scintillators for nuclear metrology within the laboratory for measurements of industrial application as well as more fundamental blue-sky research. The high light yield, possibility for low internal background, suitable energy resolution and low cost of the devices make them attractive counters for coincidence...
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Frank Wu (Simon Fraser University)28/04/2026, 11:00
The semi-magic Sn nuclei, extending beyond the $N=50$ and $N=82$ shell closures, present one of the most-studied isotopic chains on the nuclear chart. $^{118}_{50}$Sn$_{68}$ and $^{120}_{50}$Sn$_{70}$ lie in the neutron mid-shell, where shape coexistence was proposed with the signature of deformed excited $0^+$ states intruding into the seniority-like spherical yrast bands. However, transition...
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David O'Donnell28/04/2026, 11:25
The atomic nuclei in the actinide region exhibit some of the most striking examples of collective structure in the nuclear chart, including strong quadrupole deformation, octupole correlations, and the emergence of reflection-asymmetric (pear-shaped) configurations. These phenomena give rise to enhanced electric dipole (E1) and octupole (E3) transition strengths, parity doublets, and low-lying...
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Jesús Sánchez Prieto (Consejo Superior de Investigaciones Cientificas (CSIC) (ES))28/04/2026, 11:50
The region around N≈60 with Z≤40 has generated considerable interest as it features the most abrupt shape transition known to date in the nuclear chart, when crossing from N=58 to N=60 [1]. This transition is closely linked to shape coexistence [2], a phenomenon where two or more states with different intrinsic shapes coexist within the same nucleus at low excitation energy and within a narrow...
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Pablo Gonzalez-Tarrio Vicente (Universidad Complutense (ES))28/04/2026, 12:10
Abstract
The region around the doubly-magic $^{78}\mathrm{Ni}$ ($Z = 28$ and $N = 50$) is crucial for nuclear structure studies since it provides an ideal testing ground to investigate shell evolution and the interplay between single-particle and collective effects. Currently, many experimental and theoretical efforts are dedicated to investigate this region of the nuclear...
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Fabien Dubar (LUXIUM SOLUTIONS)28/04/2026, 13:30
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Mr Yuri Venturini (CAEN SpA)28/04/2026, 14:00
High-precision time measurements are crucial for both high-energy physics experiments and advanced medical imaging applications, such as Positron Emission Tomography (PET). Future detector systems require readout electronics that combine sub-10 ps timing resolution with scalability, compactness, and efficient multi-channel integration.
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The CAEN A5203 module, part of the FERS 5200 system,... -
Himanshu Kumar Singh28/04/2026, 14:30
Chirality is one of the most intriguing phenomena observed in atomic nuclei. It has been extensively reported in doubly odd nuclei within the mass region around A ≈ 130 [1]. A vital test for confirming the presence of chirality in nuclei involves examining the behavior of their in-band transition probabilities [2]. Given this context, precise lifetime measurements of excited states are...
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Michał Młynarczyk (Faculty of Physics, University of Warsaw, PL-02-093 Warsaw, Poland)28/04/2026, 14:35
The study of $\beta$-decay properties of neutron-rich nuclei in the A $\approx$ 120 region provides key insights into nuclear-structure evolution and serves as a critical benchmark for modern theoretical models, as well as for astrophysical r-process simulations. In this context, the $\beta$-decay of $^{118}$Pd ($Z$ = 46, $N$ = 72), populating excited states in $^{118}$Ag, has been...
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Pawel Wakuluk (University of Warsaw (PL))28/04/2026, 14:40
Over the past several years, extensive studies have been devoted to the structure of neutron-rich tin isotopes, which possess a closed proton shell, with ¹³²Sn being a doubly magic nucleus. For this reason, these nuclei play a particularly important role in testing the validity of the nuclear shell model and serve as a benchmark for theoretical predictions. Information obtained in this region...
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P. Koseoglou (Department of Physics, National and Kapodistrian University of Athens, Zografou Campus, GR-15784 Athens, Greece)28/04/2026, 14:45
All rare-earth isotopic chains are known to undergo a transition from spherical to deformed shapes between the magic neutron number N = 82 and the neutron mid-shell region around neutron number N = 104. Both $^{176}$Yb and $^{178}$Yb isotopes (with N = 106 and 108, respectively) show signs of strong deformation, standing on the deformed side of the ytterbium isotopic chain, with R$_{4/2}$ =...
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Pedro Miguel Da Rocha Rodrigues (Universidade do Porto (PT))28/04/2026, 14:50
Advancements in low-cost FPGA-integrated digitizers are reshaping timing techniques in nuclear spectroscopy, enabling compact digital solutions for coincidence measurements. In this work, we present a fully digital time-differential perturbed angular correlation (TDPAC) spectrometer based on a commercial CAEN DT5730S digitizer (8 channels, 14-bit ADC, 500 MS/s) combined with PACIFIC², an...
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Gabriel Garcia De Lorenzo (Universidad Complutense (ES))28/04/2026, 14:55
Regions near closed shells in areas of the nuclear chart far from stability are very interesting from the point of view of nuclear structure, since a shell model description based on single-particle states can be challenged by collective effects. One of the most interesting regions is the one around the doubly-magic $^{78}$Ni nucleus, with $Z = 28$ and $N = 50$ [Taniuchi2019].
Odd-$A$ $N =...
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Antonio Duarte Neves Cesario (Universidade do Porto (PT))28/04/2026, 15:00
In recent years, nuclear spectroscopy experiments have progressively replaced traditional analog setups with compact and affordable digital data acquisition systems. These systems reduce size and electronic complexity while maintaining adequate performance for a wide range of applications.
More recently, digital Time Differential Perturbed Angular Correlation (PAC) spectroscopy setups have...
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Vlad-Mihai Placinta (Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH RO))28/04/2026, 15:04
The LHCb Ring Imaging Cherenkov (RICH) sub-detectors will undergo a major upgrade of their opto-electronics chain in the next decade. The upgrade will take place in two steps and will start first with the electronics chain upgrade during the LS3 Enhancement program for RUN 4, followed by a sensor replacement for Upgrade II during RUN 5. A novel front-end ASIC, the FastRICH, was designed to...
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Manfred Jaftha (University of the Western Cape)28/04/2026, 15:08
Neutron deficient nuclei in the A=80 mass region present a rich-nuclear structure where subshell effects give rise to sudden shape changes, from highly deformed nuclides in the N≤40 region to spherical isotopes near N=50. Systematics of low-lying states and transitions in neutron-deficient strontium isotopes show a steady reduction in excitation energies and a corresponding increase in reduced...
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Geneva Anelska April (University of the Western Cape (ZA))28/04/2026, 15:12
Nuclides in the A ≈ 80 mass region provide an important testing ground for shape coexistence driven by sub-shell gaps and configuration mixing. The nucleus ⁸⁰Sr is predicted to exhibit coexisting shapes at low excitation energy [1], but experimental information on non-yrast states and excited 0⁺ levels remain limited. The first excited 0⁺ state has been tentatively assigned near 1 MeV in...
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Piotr Michal Garczynski (University of Warsaw (PL))28/04/2026, 15:16
Prompt and delayed gamma-ray spectroscopy of fission products is a robust method for measuring fragment yields in fusion-fission reactions. Currently, the analysis of $\gamma$-$\gamma$-$\gamma$ cascades and decay curves enables the extraction of absolute independent fragment yields, as demonstrated in recent studies on heavy-ion induced fission of the $^{215}$Fr and $^{194}$Hg systems at high...
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William Marshall (University of York)29/04/2026, 09:30
The HYPATIA (HYbrid Photon detector Array To Investigate Atomic nuclei) [1] is an array under construction at the RIBF that consists of GAGG and CeBr3 scintillator crystals coupled to large area SiPM photosensors. In particular, the Hamamatsu S14161-6050HS-04 4x4 SiPM array. Excellent timing response from HYPATIA is important for reducing the non-prompt background induced by particles emitted...
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Victor Martinez Nouvilas (Universidad Complutense (ES))29/04/2026, 09:50
The HIE-ISOLDE Timing Array for Reaction Studies (HISTARS) array is being developed for the measurement of lifetimes of excited nuclear states produced in reactions at HIE-ISOLDE (CERN). It is based on fast particle and gamma scintillator detectors that will require a fast data acquisition system capable of handling more than 60 channels with good time and energy resolution. Digitizing the...
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Miriam Caballero Rodriguez (Universidad Complutense (ES))29/04/2026, 10:10
In the framework of the HIE-ISOLDE Timing Array for Reaction Studies (HISTARS) project at ISOLDE/CERN, a detector system is being developed to measure lifetimes of excited nuclear states populated in reactions at HIE-ISOLDE. For particle detection, plastics or fast inorganic scintillators such as GAGG(Ce) and YSO(Ce) are promising candidates due to their non-hygroscopic nature, high density,...
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Juan Francisco Gonzalez Linares (Instituto de Estructura de la Materia - CSIC)29/04/2026, 10:30
In recent years, perovskites have been widely studied as materials for the development of fast scintillators [1]. Due to their excellent carrier dynamics and excitonic behavior—particularly when present as nanocrystals—perovskites can emit light between 20 and 1,000 times faster than other semiconductors [2]. These properties make them promising candidates for fast-timing applications such as...
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Dr Polytimos Vasileiou (Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH))29/04/2026, 11:10
The neutron-deficient region around the $Z=50$ major shell closure provides fertile grounds for nuclear structure studies, as single-particle degrees of freedom compete with collective phenomena to form several of the observed spectroscopic properties. Pd isotopes, sitting 4 protons below the shell closure,present especially attractive study cases, with recent theoretical and experimental work...
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Michal Mikolajczuk29/04/2026, 11:30
The region "south-west" of $^{132}$Sn is of interest for both theoretical and experimental efforts to comprehend nuclear shell structure in the vicinity of proton (Z=50) and neutron (N=82) shell closures. The half-lives of excited nuclear states are a crucial source of information on nuclear shell structure, and advanced experimental methods had to be developed to obtain the necessary data....
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Krzysztof Albert Solak (University of Warsaw (PL))29/04/2026, 11:50
The astrophysical rapid neutron-capture process (r-process) is responsible for producing approximately half of the heavy elements in the Universe; however, its quantitative modeling remains limited by the scarcity of experimental knowledge of the structure of neutron-rich nuclei far from stability. In particular, nuclei in the $A \approx 115$ region provide an important benchmark for nuclear...
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LUDOVICO LAPO LUPERI (CEA Paris-Saclay)29/04/2026, 12:10
Low-lying 1/2$^+$ and 5/2$^+$ states, interpreted as resulting from 1p-2h excitation through the N=50 shell gap, have been observed in several neutron-rich N=49 nuclei. In particular, charge radii measured for the ground state and the 1p-2h 1/2$^+$ isomer in $^{79}$Zn provide evidence for a deformed character of the latter [1].
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In this context, fast-timing measurements have been performed... -
Shrabasti Banerjee (Variable Energy Cyclotron Centre, Kolkata)Nuclear structure from fast-timing measurementsOral presentation
Cs isotopes (Z = 55, N < 82) occupy the transitional region of the nuclear chart between deformed and near-spherical nuclei. Nuclei in this region exhibit a variety of interesting structural phenomena such as $\gamma$-softness, triaxiality and octupole correlations. Lifetime measurements serve as valuable probes of nuclear structure as they provide direct access to reduced transition...
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