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Artificial Production of a New Kind of Radio-Element
We show that when an aluminium foil is irradiated on a polonium preparation, the emission of positrons does not cease immediately, when the active preparation is removed. Expand
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Preuves expérimentales de l'annihilation des électrons positifs
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching andExpand
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Mass of the Neutron
THE mass of the neutron has been calculated by Chadwick on the assumption that the neutrons of boron are emitted by the isotope 115B, according to the nuclear reaction Using the exact masses of 115B,Expand
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Liberation of Neutrons in the Nuclear Explosion of Uranium
RECENT experiments1,2 have revealed the existence of a new kind of nuclear reaction: neutron bombardment of uranium and thorium loads to an explosion of the nucleus, which splits up into particles ofExpand
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Energy of Neutrons liberated in the Nuclear Fission of Uranium induced by Thermal Neutrons
IT has been shown that fast neutrons are liberated in the process of nuclear fission induced in uranium by primary thermal neutrons. Two different methods of detection have been used: in the firstExpand
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Number of Neutrons Liberated in the Nuclear Fission of Uranium
RECENT experiments have shown that neutrons are liberated in the nuclear fission of uranium induced by slow neutron bombardment: secondary neutrons have been observed which show spatial1, energetic2Expand
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Paul Langevin, 1872-1946
  • F. Joliot
  • Art
  • Obituary Notices of Fellows of the Royal Society
  • 1 November 1951
Paul Langevin naquit à Paris, dans le quartier de Montmartre, le 23 Janvier 1872. Sa famille était de condition fort modeste. Son père, après avoir servi comme zouave dans l’Armée, devintExpand
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