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static constexpr auto | c = 299'792'458._rt |
| vacuum speed of light [m/s] More...
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static constexpr auto | ep0 = 8.8541878128e-12_rt |
| vacuum permittivity: dielectric permittivity of vacuum [F/m] More...
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static constexpr auto | mu0 = 1.25663706212e-06_rt |
| vacuum permeability: magnetic permeability of vacuum = 4.0e-7 * pi [H/m] More...
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static constexpr auto | q_e = 1.602176634e-19_rt |
| elementary charge [C] More...
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static constexpr auto | m_e = 9.1093837015e-31_rt |
| electron mass [kg] More...
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static constexpr auto | m_p = 1.67262192369e-27_rt |
| proton mass [kg] More...
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static constexpr auto | m_u = 1.66053906660e-27_rt |
| dalton: unified atomic mass unit [kg] More...
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static constexpr auto | hbar = 1.054571817e-34_rt |
| reduced Planck Constant = h / tau [J*s] More...
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static constexpr auto | alpha = 0.007297352573748943_rt |
| fine-structure constant = mu0/(4*pi)*q_e*q_e*c/hbar [dimensionless] More...
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static constexpr auto | r_e = 2.817940326204929e-15_rt |
| classical electron radius = 1./(4*pi*ep0) * q_e*q_e/(m_e*c*c) [m] More...
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static constexpr double | xi = 1.3050122447005176e-52 |
| xi: nonlinearity parameter of Heisenberg-Euler effective theory = (2.*alpha*alpha*ep0*ep0*hbar*hbar*hbar)/(45.*m_e*m_e*m_e*m_e*c*c*c*c*c) More...
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static constexpr auto | xi_c2 = 1.1728865132395492e-35_rt |
| xi times c2 = xi*c*c. This should be usable for single precision instead of xi; very close to smallest float32 number possible (1.2e-38) More...
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static constexpr auto | kb = 1.380649e-23_rt |
| Boltzmann constant (exact) [J/K]. More...
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static constexpr auto | eV = q_e |
| 1 eV in [J] More...
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static constexpr auto | MeV = q_e * 1e6_rt |
| 1 MeV in [J] More...
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static constexpr auto | eV_invc = eV / c |
| 1 eV/c in [kg*m/s] More...
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static constexpr auto | MeV_invc = MeV / c |
| 1 MeV/c in [kg*m/s] More...
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static constexpr auto | eV_invc2 = eV / (c * c) |
| 1 eV/c^2 in [kg] More...
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static constexpr auto | MeV_invc2 = MeV / (c * c) |
| 1 MeV/c^2 in [kg] More...
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Physical constants
Values are the 2018 CODATA recommended values https://physics.nist.gov/cuu/Constants/index.html
New additions here should also be considered for addition to warpx_constants
in WarpXUtil.cpp's makeParser
, so that they're available in parsing and evaluation of PICMI expressions, as well as the corresponding Python definitions