bei48482_FM

bei48482_endpapers.qxd

Physical Constants and Conversion Factors

Atomic mass unit u 1.66054 10 ^27 kg

931.49 MeVc^2

Avogadro’s number N 0 6.022 1026 kmol^1

Bohr magneton B 9.274 10 ^24 JT

5.788 10 ^5 eV/T

Bohr radius a 0 5.292 10 ^11 m

Boltzmann’s constant k 1.381 10 ^23 J/K

8.617 10 ^5 eV/K

Compton wavelength of electron c 2.426 10 ^12 m

Electron charge e 1.602 10 ^19 C

Electron rest mass me 9.1095 10 ^31 kg

5.486 10 ^4 u

0.5110 MeV/c^2

Electronvolt eV 1.602 10 ^19 J

eV/c 5.344 10 ^28 kgm/s

eV/c^2 1.783 10 ^30 kg

Hydrogen atom, ground-state energy E 1 2.179 10 ^18 J

13.61 eV

rest mass mH 1.6736 10 ^27 kg

1.007825 u

938.79 MeV/c^2

Joule J 6.242 1018 eV

Kelvin K °C273.15

Neutron rest mass mn 1.6750 10 ^27 kg

1.008665 u

939.57 MeV/c^2

Nuclear magneton N 5.051 10 ^27 J/T

3.152 10 ^8 eV/T

Permeability of free space  0 4  10 ^7 Tm/A

Permittivity of free space  0 8.854 10 ^12 C^2 /Nm^2

1  4  0 8.988 109 Nm^2 /C^2

Planck’s constant h 6.626 10 ^34 Js

4.136 10 ^15 eVs

h 2  1.055 10 ^34 Js

6.582 10 ^16 eVs

Proton rest mass mp 1.6726 10 ^27 kg

1.007276 u

938.28 MeV/c^2

Rydberg constant R 1.097 107 m^1

Speed of light in free space c 2.998 108 m/s

Stefan’s constant 5.670 10 ^8 W/m^2 K^4

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