Particle Physics - FSU Physics Department
Particle Physics - FSU Physics Department
Particle Physics - FSU Physics Department
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About Units<br />
Energy - electron-volt<br />
• 1 electron-volt = kinetic energy of an electron when<br />
moving through potential difference of 1 Volt;<br />
o 1 eV = 1.6 × 10 -19 Joules = 2.1 × 10 -6 W•s<br />
o 1 kW•hr = 3.6 × 10 6 Joules = 2.25 × 10 25 eV<br />
o 1 MeV = 10 6 eV, 1 GeV = 10 9 eV, 1 TeV = 10 12 eV<br />
mass - eV/c 2<br />
o 1 eV/c 2 = 1.78 × 10 -36 kg<br />
o electron mass = 0.511 MeV/c 2<br />
o proton mass = 938 MeV/c 2 = 0.938 GeV/ c 2<br />
o neutron mass = 939.6 MeV/c 2<br />
momentum - eV/c:<br />
o 1 eV/c = 5.3 × 10 -28 kg m/s<br />
o momentum of baseball at 80 mi/hr ≈ 5.29 kgm/s ≈ 9.9 × 10 27<br />
eV/c<br />
Distance<br />
o 1 femtometer (“Fermi”) = 10 -15 m<br />
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