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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…

物理学史与哲学 · 物理学 2008-11-26 Nina Byers

We investigate Big Bang nucleosynthesis (hereafter, BBN) in a cosmic environment characterized by a distribution of small-scale matter/antimatter domains. Production of antimatter domains in a baryo-asymmetric universe is predicted in some…

天体物理学 · 物理学 2009-10-30 Jan B. Rehm , Karsten Jedamzik

Pioneering experiments on production of hypernuclei can be performed with nuclotron beams on fixed targets, and at the future NICA facility. The peripheral collisions of relativistic ions are very promising for searching mutli-strange and…

核理论 · 物理学 2013-05-24 A. S. Botvina

A long time ago, at a laboratory far, far away, the Fermilab Tevatron collided protons and antiprotons at $\sqrt{s} = 1.96$ TeV. The CDF and D0 experiments each recorded datasets of about 10 fb$^{-1}$. As such experiments may never be…

高能物理 - 实验 · 物理学 2019-08-21 Kenneth Bloom

Enrico Fermi and Leo Szilard worked together at Columbia in 1939-40, just after nuclear fission was discovered, to ascertain the feasibility of a nuclear chain reaction, and then on the construction of the first nuclear reactor. Szilard…

物理学史与哲学 · 物理学 2007-05-23 Nina Byers

Invited talk presented by the first author at the XIVth European Conference of Few-Body Problems in Physics, Amsterdam, August 23-28, 1993

核理论 · 物理学 2007-05-23 R. Timmermans , Th. A. Rijken , J. J. de Swart

The fundamental question of baryogenesis and the problem of matter-antimatter asymmetry motivate this study into the formation and evolution of antimatter objects in the early Universe. Hypothesize is the existence of isolated antimatter…

高能天体物理现象 · 物理学 2026-02-04 Sattvik Yadav

In response to the growing interest in building a Neutrino Factory to produce high intensity beams of electron- and muon-neutrinos and antineutrinos, in October 1999 the Fermilab Directorate initiated two six-month studies. The first study,…

To world-wide notice, in 2002 the ATHENA collaboration at CERN (in Geneva, Switzerland) announced the creation of order 100,000 low energy antihydrogen atoms. Thus, the concept of using condensed antihydrogen as a low-weight, powerful fuel…

天体物理学 · 物理学 2007-05-23 Michael Martin Nieto , Michael H. Holzscheiter , Slava G. Turyshev

Quite a long time ago several authors (see,e.g., \cite{Der}, \cite{Pe} ) mentioned that among pioneers of the quark idea we should take into consideration one more (in addition to M. Gell-Mann and G. Zweig) author, Andr\'{e} Petermann (1922…

物理学史与哲学 · 物理学 2020-01-16 Vladimir A. Petrov

Antineutrinos are electrically neutral, nearly massless fundamental particles produced in large numbers in the cores of nuclear reactors and in nuclear explosions. In the half century since their discovery, major advances in the…

核实验 · 物理学 2012-03-27 A. Bernstein , G. Baldwin , B. Boyer , M. Goodman , J. Learned , J. Lund , D. Reyna , R. Svoboda

Nuclear collisions recreate conditions in the universe microseconds after the Big Bang. Only a very small fraction of the emitted fragments are light nuclei, but these states are of fundamental interest. We report the observation of…

核实验 · 物理学 2010-03-11 The STAR Collaboration , B. I. Abelev

The production and propagation of light antimatter nuclei has been calculated using inclusive antiproton production cross sections from a new data analysis, and coalescence models for the production of composite particles. Particles were…

天体物理学 · 物理学 2007-05-23 B. Baret , R. Duperray , G. Boudoul , A. Barrau , Maurin D. Derome , K. Protasov , M. Buenerd

Antiproton-induced reactions on nuclei at the beam energies from hundreds MeV up to several GeV provide an excellent opportunity to study interactions of the antiproton and secondary particles (mesons, baryons and antibaryons) with…

核理论 · 物理学 2015-05-12 A. B. Larionov

High-energy nuclear collisions create an energy density similar to that of the universe microseconds after the Big Bang, and in both cases, matter and antimatter are formed with comparable abundance. However, the relatively short-lived…

核实验 · 物理学 2015-03-19 STAR Collaboration

Fermilab has long had the world's most intense antiproton source. Despite this, opportunities for low-energy antiproton physics at Fermilab have in the past been limited and--with the antiproton source now exclusively dedicated to serving…

高能物理 - 实验 · 物理学 2015-06-25 Daniel M. Kaplan

This article is set during the 1944 and 1945 final push to complete Project Y -- the Manhattan Project at Los Alamos -- and focuses primarily on overcoming the challenge of creating and demonstrating a successful convergent explosive…

物理学史与哲学 · 物理学 2021-03-11 E. N. Brown , D. L. Borovina

Naturally occurring nuclear reactors existed in uranium deposits on Earth long before Enrico Fermi built the first man-made nuclear reactor beneath Staggs Field in 1942. In the story of their discovery, there are important lessons to be…

物理教育 · 物理学 2007-05-23 J. Marvin Herndon

Dark-matter particles like neutralinos should decouple from the hot cosmic plasma at temperatures of about 40 GeV. Later they can annihilate each other into standard-model particles, which are injected into the dense primordial plasma and…

高能天体物理现象 · 物理学 2016-11-30 Igor N. Mishustin

A theoretical model describing neutron-proton scattering developed by Majorana as early as in 1932, is discussed in detail with the experiments that motivated it. Majorana using collisions' theory, obtained the explicit expression of…

物理学史与哲学 · 物理学 2011-10-04 E. Di Grezia