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| .p12 1913 Bohr "planetary" model for electron, except solar system planets denser than electrons in atoms .p13 quarks smaller than 1e-4 nuclear radius |
.p12 1913 Bohr "planetary" model for electron, except solar system planets denser than electrons in atoms .p13 quarks smaller than 1e-4 nuclear radius .p15 [[ https://en.wikipedia.org/wiki/Patrick_Blackett | Patrick Blackett ]] 1921-4 23,000 cloud chamber photographs of alphas bombarding nitrogen, eight examples of proton ejection and an oxygen .p19 Chadwick neutron 1932 .p23 Pauli hypothesized neutrino 1931 . proton, neutron, electron, neutrino spin 1/2 .p25 irradiated aluminum with alpha (helium) particles from radium (or polonium?), produced phosphorus-30 with 3 minute half life .p26 Al[13p14n] + He[2p2n] => n + P[15p15n] ( 3 min ) => Si[16p14n] + positron + neutrino .p26 1935 Nobel, Frédéric suggests "transmutations of an explosive type" .p27 [[ Hahn | https://en.wikipedia.org/wiki/Otto_Hahn ]] and [[ Strassmann | https://en.wikipedia.org/wiki/Fritz_Strassmann ]] fission 1938, Fermi slow neutrons with paraffin or water so they don't shatter nuclei .026 [[ | ]] |
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| More later | More later |
Nuclear Physics, A Very Short Introduction
Frank Close 2015, Tigard Lib 539.7 CLO
- p11 1909-11 Rutherford and Marsden bombard gold foil with alphas, 1/10000 bounce back, demonstrates dense positive nucleus less than 1e-12 by volume.
- p12 1913 Bohr "planetary" model for electron, except solar system planets denser than electrons in atoms
- p13 quarks smaller than 1e-4 nuclear radius
p15 Patrick Blackett 1921-4 23,000 cloud chamber photographs of alphas bombarding nitrogen, eight examples of proton ejection and an oxygen
- p19 Chadwick neutron 1932
- p23 Pauli hypothesized neutrino 1931
- proton, neutron, electron, neutrino spin 1/2
- p25 irradiated aluminum with alpha (helium) particles from radium (or polonium?), produced phosphorus-30 with 3 minute half life
p26 Al[13p14n] + He[2p2n] => n + P[15p15n] ( 3 min ) => Si[16p14n] + positron + neutrino
- p26 1935 Nobel, Frédéric suggests "transmutations of an explosive type"
p27 https://en.wikipedia.org/wiki/Otto_Hahn and https://en.wikipedia.org/wiki/Fritz_Strassmann fission 1938, Fermi slow neutrons with paraffin or water so they don't shatter nuclei
More later
Note, reference Nuclear Power A.V.S.I. by Maxwell Irvine 2011 online at Internet Archive Digital Library. Some about plasma fusion physics, but not much help calculating fusion cross section.