The Gaudi Framework
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PhysicalConstants.py File Reference
Go to the source code of this file.
Namespaces
namespace
GaudiKernel
namespace
GaudiKernel.PhysicalConstants
Variables
float
GaudiKernel.PhysicalConstants.pi
= 3.14159265358979323846
int
GaudiKernel.PhysicalConstants.twopi
= 2 *
pi
float
GaudiKernel.PhysicalConstants.halfpi
=
pi
/ 2
float
GaudiKernel.PhysicalConstants.pi2
=
pi
*
pi
float
GaudiKernel.PhysicalConstants.Avogadro
= 6.02214076e23 / Units.mole
float
GaudiKernel.PhysicalConstants.c_light
= 2.99792458
e8
* Units.m / Units.s
float
GaudiKernel.PhysicalConstants.c_squared
=
c_light
*
c_light
float
GaudiKernel.PhysicalConstants.h_Planck
= 6.62607015e-34 * Units.joule * Units.s
float
GaudiKernel.PhysicalConstants.hbar_Planck
=
h_Planck
/
twopi
float
GaudiKernel.PhysicalConstants.hbarc
=
hbar_Planck
*
c_light
float
GaudiKernel.PhysicalConstants.hbarc_squared
=
hbarc
*
hbarc
GaudiKernel.PhysicalConstants.electron_charge
= -Units.eplus
GaudiKernel.PhysicalConstants.e_squared
= Units.eplus * Units.eplus
float
GaudiKernel.PhysicalConstants.electron_mass_c2
= 0.510998910 * Units.MeV
float
GaudiKernel.PhysicalConstants.proton_mass_c2
= 938.272013 * Units.MeV
float
GaudiKernel.PhysicalConstants.neutron_mass_c2
= 939.56536 * Units.MeV
float
GaudiKernel.PhysicalConstants.amu_c2
= 931.494028 * Units.MeV
float
GaudiKernel.PhysicalConstants.amu
=
amu_c2
/
c_squared
int
GaudiKernel.PhysicalConstants.mu0
= 4 *
pi
* 1.0e-7 * Units.henry / Units.m
float
GaudiKernel.PhysicalConstants.epsilon0
= 1.0 / (
c_squared
*
mu0
)
GaudiKernel.PhysicalConstants.elm_coupling
=
e_squared
/ (4 *
pi
*
epsilon0
)
float
GaudiKernel.PhysicalConstants.fine_structure_const
=
elm_coupling
/
hbarc
float
GaudiKernel.PhysicalConstants.classic_electr_radius
=
elm_coupling
/
electron_mass_c2
float
GaudiKernel.PhysicalConstants.electron_Compton_length
=
hbarc
/
electron_mass_c2
float
GaudiKernel.PhysicalConstants.Bohr_radius
=
electron_Compton_length
/
fine_structure_const
float
GaudiKernel.PhysicalConstants.alpha_rcl2
=
fine_structure_const
*
classic_electr_radius
*
classic_electr_radius
tuple
GaudiKernel.PhysicalConstants.twopi_mc2_rcl2
float
GaudiKernel.PhysicalConstants.k_Boltzmann
= 8.617333e-11 * Units.MeV / Units.kelvin
float
GaudiKernel.PhysicalConstants.STP_Temperature
= 273.15 * Units.kelvin
float
GaudiKernel.PhysicalConstants.STP_Pressure
= 1.0 * Units.atmosphere
float
GaudiKernel.PhysicalConstants.kGasThreshold
= 10.0 * Units.mg / Units.cm3
float
GaudiKernel.PhysicalConstants.universe_mean_density
= 1.0e-25 * Units.g / Units.cm3
GaudiKernel
python
GaudiKernel
PhysicalConstants.py
Generated on Tue Oct 14 2025 10:04:00 for The Gaudi Framework by
1.13.1