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The evolution of the fireball resulting from the August 2020 Beirut explosion is traced using amateur footage taken during the first $\sim$ 230 $ms$ after the detonation. 38 frames separated by $\sim$ 16.66 - 33.33 $ms$ are extracted from 6…

Popular Physics · Physics 2021-10-20 Charles Aouad , Wissam Chemissany , Paolo Mazzali , Yehia Temsah , Ali Jahami

We calculate the low-momentum N-N effective potential obtained in the OBE approximation, inside a nuclear plasma at finite temperature, as described by the relativistic $ \sigma $-$ \omega $ model. We analyze the screening effects on the…

Nuclear Theory · Physics 2019-08-15 J. Diaz Alonso , E. Gallego , A. Perez

The creation of transuranium nuclides under pulsed neutron fluxes of thermonuclear explosions is investigated within the kinetic model of the astrophysical r process, taking into account the time dependence of the external parameters and…

Nuclear Theory · Physics 2017-11-21 Yu. S. Lutostansky , V. I. Lyashuk

The structure effects of the fission fragments on their yields are studied within the statical theory with the inputs, like, excitation energies and level density parameters for the fission fragments at a given temperature calculated using…

Nuclear Theory · Physics 2017-01-04 Bharat Kumar , M. T. Senthil kannan , M. Balasubramaniam , B. K. Agrawal , S. K. Patra

Hard-scattering of point-like constituents (or partons) in p-p collisions was discovered at the CERN-ISR in 1972 by measurements utilizing inclusive single or pairs of hadrons with large transverse momentum ($p_T$). It was generally assumed…

Nuclear Experiment · Physics 2008-06-04 M. J. Tannenbaum

Accounting for viscous damping within Fokker-Planck equations led to various improvements in the understanding and analysis of nuclear fission of heavy nuclei. Analytical expressions for the fission time are typically provided by Kramers'…

Nuclear Theory · Physics 2017-12-06 Chris Eccles , Sanil Roy , Thomas H. Gray , Alessio Zaccone

Enrico Fermi estimated the yield of the Trinity test to be about 10 kilotons by dropping small pieces of paper and observing their motion in the blast wave. This is about 40% of the radiochemically derived value of $25 \pm 2$ kilotons that…

History and Philosophy of Physics · Physics 2021-12-08 J. I. Katz

Isotope-resolved post-neutron fission yields in the Ba and Xe chains are calculated and benchmarked against evaluated reference data, with emphasis on element-resolved isotopic chains $Y(N_f)$ at fixed fragment charge $Z$ and on the…

Nuclear Theory · Physics 2026-02-26 K. Pomorski , A. Augustyn , T. Cap , Y. J. Chen , M. Kowal , B. Nerlo-Pomorska , M. Warda , Z. G. Xiao

The September 11 terrorist attack against America has caused a lot of concern to the American public and the entire world, which is suspecting a new attack sooner or later. The most frightening scenario is the one involving the detonation…

Physics and Society · Physics 2014-02-18 Theodore Liolios

The availability of high-intensity, heavy-ion beams coupled to sensitive, large solid-angleacceptance spectrometers has enabled a detailed examination of the fission fragments produced in induced-fission reactions. The abrasion-fission…

We consider a model where, for a finite disintegrating system, yields of composites can be calculated to arbitrary accuracy. An analytic answer for yields is also known in the thermodynamic limit. In the range of temperature and density…

Nuclear Theory · Physics 2009-11-07 C. B. Das , S. Das Gupta , A. Majumder

Brent and McMillan introduced in 1980 a new algorithm for the computation of Euler's constant $\gamma$, based on the use of the Bessel functions I\_0(x) and K\_0(x). It is the fastest known algorithm for the computation of $\gamma$. The…

Classical Analysis and ODEs · Mathematics 2017-12-12 Jean-Pierre Demailly

Neutron-induced reaction rates, including fission, are calculated in the temperature range 1.d8 <T (K) < 1.d10 within the framework of the statistical model for targets with atomic number 83 < Z < 119 (from Po to Uuo) from the neutron to…

Solar and Stellar Astrophysics · Physics 2015-05-14 I. V. Panov , I. Yu. Korneev , T. Rauscher , G. Martínez-Pinedo , A. Kelić-Heil , N. T. Zinner , F. -K. Thielemann

The neutrino-nucleus reaction cross sections of 4He and 12C are evaluated using new shell model Hamiltonians. Branching ratios of various decay channels are calculated to evaluate the yields of Li, Be, and B produced through the nu-process…

Astrophysics · Physics 2009-11-13 T. Yoshida , T. Suzuki , S. Chiba , T. Kajino , H. Yokomakura , K. Kimura , A. Takamura , D. H. Hartmann

In 1943 fear that the German war machine might use atomic bombs was abating and among physicists another fear was taking its place - that of a postwar nuclear arms race with worldwide proliferation of nuclear weapons. Manhattan Project…

History and Philosophy of Physics · Physics 2008-11-26 Nina Byers

The concept of fission barrier - a parameter which enters in quantitative estimates of various observables related to nuclear fission - is presented from the point of view of theory based on the picture of nuclear deformation and energy…

Nuclear Theory · Physics 2022-04-27 Michał Kowal , Janusz Skalski

We suggest a small set of fission observables to be used as test cases for validation of theoretical calculations. The purpose is to provide common data to facilitate the comparison of different fission theories and models. The proposed…

Nuclear Theory · Physics 2016-01-26 G. F. Bertsch , W. Loveland , W. Nazarewicz , P. Talou

The isoscaling is investigated using the fragment yield data from fully reconstructed quasi-projectiles observed in peripheral collisions of 28Si with 124,112Sn at projectile energies 30 and 50 MeV/nucleon. The excitation energy dependence…

Nuclear Experiment · Physics 2009-11-10 M. Veselsky , G. A. Souliotis , S. J. Yennello

When multiple fission modes coexist in a given nucleus, distinct fragment yield distributions appear. Multimodal fission has been observed in a number of fissioning nuclei spanning the nuclear chart, and this phenomenon is expected to…

One of the most remarkable results to emerge from heavy-ion collisions over the past two decades is the striking regularity shown by particle yields at all energies. This has led to several very successful proposals describing particle…

High Energy Physics - Phenomenology · Physics 2011-05-05 J. Cleymans , H. Oeschler , K. Redlich , S. Wheaton