Conveners
Plenary
- Vladimir Zherebchevsky (Saint-Petersburg State University (SPbSU))
Plenary
- Yuri Novikov (1. St.Petersburg State University, Universitetskaya nab. 7/9, St.Petersburg, Russia 2.Petersburg Nuclear Physics Institute of “Kurchatov Research Center”, Gatchina, Russia)
- Vladimir Andrianov (SPbU)
Plenary
- Grigori Feofilov (St Petersburg State University (RU))
Plenary
- Vladimir Kovalenko (St Petersburg State University (RU))
Plenary
- Alexandr Andrianov
- Vladimir Zherebchevsky (Saint-Petersburg State University (SPbSU))
In 2020, we celebrate 80 years since the discovery of the fundamental phenomenon - spontaneous fission of uranium - a type of radioactive decay that defines the boundaries of the Periodic system of elements. The paper with the results of research carried out by K. Petrzhak (Radium Institute) and G. Flerov (Leningrad Institute for Physics and Technology) was sent to Physical Review on June 14,...
The global beta-decay calculations are presented which are based on the Density Functional developed by Fayans et.al. [1] and Continuum Quasiparticle Random-Phase Approximation. The DF3+CQRPA model [2] describes the data on the half-lives and probabilities of delayed neutron emission for more than 200 (quasi) spherical nuclei with Z = 18 - 52 and T1/2 < 5c within the factor of 2 and 3...
Development of radioactive ion beam (RIB) facilities is the highway of the low-energy nuclear physics development in the world the last 3 decades. RIB studies in Russian Federation at the moment are conducted only in one place – ACCULINNA/ACCULINNA-2 facility at Flerov Laboratory of Nuclear Reactions of the Joint Institute for Nuclear Research. However, scientific opportunities of these...
The artificial r-(rapid)-process of nucleosynthesis goes under high neutron flux densities: the obtained neutron fluencies in the irradiated volume of thermo-nuclear devices reach ~1025 neutrons/cm2 during the time interval ~10-6 s. Under (thermo) nuclear explosions the obtained conditions in neutron flux and temperature (~ 108 °K) reach extreme values. The creation of transuranium nuclides...
On behalf of the JUNO collaboration
The Jiangmen Underground Neutrino Observatory (JUNO) is a next generation multi-purpose liquid-scintillator neutrino experiment under construction in South China. Exploitingthe anti-neutrinos produced by the nearby nuclear power plants, JUNO will be able to study the neutrino mass hierarchy, one of the open key questions in neutrino physics. The ...
For the KATRIN collaboration
The KArlsruhe TRItium Neutrino experiment (KATRIN) is designed to improve the existed direct limit on the effective electron antineutrino mass by an order of magnitude, with a projected sensitivity of 0.2 eV/c2 at the 90% confidence level. To achieve this KATRIN is using a windowless gaseous tritium source containing up to 100 GBq activity and electrostatic...
The GERDA (GERmanium Detector Array) experiment, located at the Laboratori Nazionali del Gran Sasso (LNGS) of the Istituto Nazionale di Fisica Nucleare (INFN) in Italy, searches for the neutrinoless double beta decay (0$\nu\beta\beta$) of $^{76}$Ge. During Phase II, 35.6 kg of bare high purity germanium diodes enriched in $^{76}$Ge have been deployed in liquid argon; they serve both as source...
Ultra-high-energy cosmic rays (UHECRs) are the highest energy messengers in the universe, with energies up to $10^{20}$ eV. Studies of astrophysical particles (nuclei, electrons, neutrinos and photons) at their highest observed energies have implications for fundamental physics as well as astrophysics. The primary particles interact in the atmosphere (or in the Earth) and generate extensive...
The primary goal of the PHENIX experiment at RHIC is the experimental study of the quark-gluon plasma (QGP) using relativistic heavy ion collisions. In recent years, the unique set of small collision systems has provided evidence for collective flow in such systems that is driven by the initial state geometry. Hydrodynamical models, which include the formation of a short-lived QGP droplet,...
Exploration of the hot and dense nuclear matter produced in collisions of heavy ions is one of the main goals of modern relativistic nuclear physics. The Relativistic Heavy Ion Collider (RHIC) provides a unique opportunity to map the QCD phase diagram colliding different nuclei species and varying the energy of collisions. RHIC has already begun the second phase of the Beam Energy Scan (BES)...
The research programme of the NA61/SHINE Collaboration covers a wide range of hadronic physics in the CERN SPS energy range (beam momentum 13A - 158A GeV/c), encompassing measurements of hadron-hadron, hadron-nucleus as well as nucleus-nucleus collisions. Data are analysed to better understand the properties of hot and dense nuclear matter. This talk will present the energy dependence of...
An overview on the most recent results by the ALICE collaboration at the LHC is presented for both heavy-ion collisions (Pb--Pb and Xe--Xe) and small systems (pp and p--Pb). A broad range of topics is covered, which includes bulk particle observables and particle chemistry, heavy flavour and quarkonia production, jet-medium interaction and electromagnetic probes. Motivations and status of the...
During the ongoing Long Shutdown of the LHC, ALICE is installing detector upgrades that will allow to collect the full 50 kHz interaction rate of the LHC, collecting 2 orders of magnitude more events than in run 1 and 2. This, together with the improved track-resolution will allow ALICE to significantly improve the precision of measurements of rare signals such as heavy flavour and di-lepton...
One of the main goals of the ongoing upgrade of ALICE during the second long LHC shutdown (LS2) is to signficantly improveme the charged particle tracking and secondary vertex reconstruction, as well as the readout rate capabilities of the detector system. The ALICE physics programme of measurements of low momentum charm and beauty hadrons and low-mass dielectrons in heavy-ion collisions at...
Heavy-ion collision experiments offer a unique opportunity to study the production of (anti-)hyperon-baryons bound systems, called (anti-)hypernuclei. ALICE at the LHC measured the production of (anti-)hypertriton analyzing data collected in Pb-Pb collisions at the two center-of-mass energies of 5.02 and 2.76 TeV. The analysis was performed by exploiting the excellent particle identification...
The CMS detector at the LHC was designed originally as a particle physics experiment but has performed exceptionally well in the high-multiplicity environment of heavy-ion collisions. Over the past decade, the CMS collaboration had delivered multiple ground-breaking results on quark-gluon plasma produced in such collision events. In this talk, I will review the recent CMS results from the...
Spectroscopic factors are intensely used in the analysis of nuclear reactions. However, spectroscopic factors are absent in the rigorous theory of nuclear reactions. They arise only within the standard version of the distorted-wave Born approximation (DWBA) as a result of the replacement of a rigorous many-particle overlap function by a two-body wave function. This approach has no serious...
A structure of atomic nuclei have many examples of a phase transitions with increase of the excitation energy, rotational moment and changing of the number of nucleons. These are phase transitions in the equilibrium shape and structure of the ground and low-lying excited states related to symmetry changed. The problem of phase transitions has caused of new wave of researches of the structure...
The problem of significant disagreements [1] between partial photoneutron reaction cross sections obtained using the method of neutron multiplicity-sorting at Livermore (USA) and Saclay (France) was investigated in detail. As a rule for 19 nuclei from $^{51} \mathrm{V}$ to $^{238} \mathrm{U}(\gamma, 1 \mathrm{n})$ reaction cross sections are larger at Saclay, but $(\gamma, 2 n)$ cross sections...
Total reaction cross sections for interaction of ${}^8$Li and ${}^8$He secondary beam with ${}^{28}$Si, ${}^{59}$Co, ${}^{181}$Ta target nuclei in the energy range 25–45 A MeV were measured. Modified transmission method based on registration of prompt $n$, $\gamma$ radiation by a multi-detector $\gamma$-spectrometer [1, 2] was used. Energy dependences of total reaction cross sections were...
Recently unique experiments have been carried out to measure the fully (FDCS) and single (SDCS) differential cross sections of Compton ionization of helium atoms near the threshold of single ionization [1]. The photon energy was about 2 keV, and the energy of the detected electrons did not exceed 10 eV.
An adequate theoretical description in this energy range can be carried out in the...
The sequential $n$-stage ($n\geq2$) decay of the compound nucleus $A$: $A \rightarrow {b_1}+A_1 \rightarrow \ldots \rightarrow {b_1}+\ldots +{b_n}+A_n$ with the formation of the real particles $b_1, \ldots, b_n$, intermediate nuclei $A_1,\ldots, A_{n-1}$ and the final nucleus $A_n$ with internal energies $E_{b_1},\ldots, E_{b_n}$ and $E_{A_1},\ldots,E_{A_n}$, correspondingly, has been...
Recent developments of the relativistic nuclear field theory (NFT) on the fermionic correlation functions will be presented. The general non-perturbative equation of motion framework is formulated in terms of a closed system of non-linear equations for one-body and two-body propagators. The present formulation provides a direct link to ab-initio theories and extends the explicit treatment of...
The experiment Neutrino-4 had started in 2014 with a detector model and then was continued witha full-scale detector. All steps of preparatory work on this experiment are presented. Measurements were carried out in two phases. The first phase measurements with reactor under operation hadstarted in June 2016 and were continued till June 2018. The second phase from September 2018 to July 2019...
For the first time, a new nuclear-physical phenomenon is described - the flight out from complex nuclei of the lightest clusters with mass numbers from 1 to 4. The interpretation of the phenomenon consists in the assertion that the multiclusters recently experimentally discovered in the volume of nuclei [1] spontaneously enter into thermonuclear fusion reactions with each other. While they...
Cancer is a critical societal issue. Worldwide, in 2018 alone, 18.1 million cases were diagnosed, 9.6 million people died and 43.8 million people were living with cancer. Current projections anticipate an increase with approximately 24,6 million newly diagnosed patients, 13 million related deaths by 2030.. The efforts that are currently carried out worldwide to improve the effectiveness of RT...
The investigations of the processes and mechanisms of medium-range nuclear systems (formed in reactions with protons) formation, with the evaporation of one or more nucleons in the final stages, are not only the significant fundamental task, but also have practical importance. These tasks become particularly relevant for production of medical radionuclides which are used for effective early...
Having uncovered the explicit source for <2% of the mass of visible matter, attention is now shifting to searches for the origin and the explanation of the remaining >98%. That emergent mass is contained within atomic nuclei, which lie at the core of everything we can see. At the first level of approximation, the atomic weight of a nucleus is simply the sum of the masses of all the neutrons...
One of the main questions relating to heavy ion collisions “How much of incident energy is converted into a compression of nuclear matter?” has not found a definite answer yet. Equation of State (EoS) which describes density dependence of the energy density achieved in a hot and dense nuclear matter is not specified yet for heavy ion collisions. High compression should change both the initial...
The neutral pion two gamma decay amplitude is determined by the Chiral anomaly. Recent calculations made within Chiral Perturbation Theory predict this value at percent level accuracy. Precise determination of this decay width gives a possibility to check the theoretical calculations. The PrimEx experiment used the Primakoff effect to measure neutral pion radiative decay width. The final...
It is entirely plausible that during the primordial quark – hadron phase transition, microseconds after the Big Bang, the universe may experience supercooling accompanied by mini inflation leading to a first – order phase transition from quarks to hadrons. The relics, in the form of quark nuggets, with baryon number beyond a critical value will survive the evolution of the universe. The quark...
Modern medicine has a large arsenal of equipment for diagnostic and therapeutic purposes, which uses sources of ionizing radiation - these are x-ray tubes, natural and artificial isotopes, accelerators. The science of physical radiation and devices, medical diagnostic devices, facilities and technologies, the ability to diagnose and treat diseases of the human body using methods and means of...
