About: Physics of Particles and Nuclei is an academic journal published by IOP Publishing. The journal publishes majorly in the area(s): Neutrino & Quantum chromodynamics. It has an ISSN identifier of 1063-7796. Over the lifetime, 1585 publications have been published receiving 10045 citations. The journal is also known as: Fizika elementarnykh chastits i atomnogo yadra.
TL;DR: In this article, the authors reviewed the development of methods for instrumental neutron activation analysis (INAA) and their applications in the life sciences, focusing on epithermal activation with reactor neutrons (ENAA), and the advantages of this technique in analysis of environmental objects.
Abstract: Development of methods for instrumental neutron activation analysis (INAA) and their applications in the life sciences are reviewed. Emphasis is placed on epithermal activation with reactor neutrons (ENAA), and the advantages of this technique in analysis of environmental objects are shown. The results of applied INAA studies in the field of the life sciences carried out at the world’s leading nuclear centers are reported. Experience in employing a radioanalytical complex at the IBR-2 reactor (Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna) for such studies is summarized.
TL;DR: In this article, a review is devoted to the elucidation of the basic problems arising in the theoretical investigation of systems with Bose-Einstein condensate and its relation to global gauge symmetry breaking.
Abstract: The review is devoted to the elucidation of the basic problems arising in the theoretical investigation of systems with Bose-Einstein condensate. Understanding these challenging problems is necessary for the correct description of Bose-condensed systems. The principal problems considered in the review are as follows: (i) What is the relation between Bose-Einstein condensation and global gauge symmetry breaking? (ii) How to resolve the Hohenberg-Martin dilemma of conserving versus gapless theories? (iii) How to describe Bose-condensed systems in strong spatially random potentials? (iv) Whether thermodynamically anomalous fluctuations in Bose systems are admissible? (v) How to create nonground-statc condensates? Detailed answers to these questions are given in the review. As examples of nonequilibrium condensates, three cases are described: coherent modes, turbulent superfluids, and heterophase fluids.
TL;DR: In this article, various aspects of the formation of the fragment mass-energy distributions from the fission of excited nuclei in the range Z 2 /A=20 −43 in heavy-ion reactions are reviewed.
Abstract: The various aspects of the formation of the fragment mass–energy distributions from the fission of excited nuclei in the range Z 2 /A=20–43 in heavy-ion reactions are reviewed. These are: the actual temperature of the fissioning nucleus after the emission of prefission particles, the effect of the angular momentum transferred to the nucleus by the incident ion, the static features of the formation of the fragment distributions of very light nuclei, the role and nature of dynamical effects in the descent of the nucleus from the saddle point to the scission point in the case of heavy nuclei, and the properties of quasi-fission. A fairly complete summary is given of both the experimental data on all these aspects and the theoretical understanding based on current ideas about the fission process.
TL;DR: In this paper, a non-local modified gravity model with an analytical function of the d'Alembert operator is considered, which is a possible way of resolving the singularities problem in cosmology.
Abstract: A non-local modified gravity model with an analytical function of the d’Alembert operator, is considered. This model has been recently proposed as a possible way of resolving the singularities problem in cosmology. We present exact bouncing solution, which is simpler compared to the already known one in this model, in the sense it does not require an additional matter to satisfy all gravitational equations.