#include <GaudiKernel/SystemOfUnits.h>

Include dependency graph for PhysicalConstants.h:

This graph shows which files directly or indirectly include this file:

Namespaces
	Gaudi
	This file provides a Grammar for the type Gaudi::Accumulators::Axis It allows to use that type from python with a format liks : ( nbins, min, max, title ) where title can be ommited.

	Gaudi::Units

Variables
constexpr double	Gaudi::Units::pi = 3.14159265358979323846

constexpr double	Gaudi::Units::twopi = 2 * pi

constexpr double	Gaudi::Units::halfpi = pi / 2

constexpr double	Gaudi::Units::pi2 = pi * pi

constexpr double	Gaudi::Units::Avogadro = 6.0221367e+23 / mole

constexpr double	Gaudi::Units::c_light = 2.99792458e+8 * m / s

constexpr double	Gaudi::Units::c_squared = c_light * c_light

constexpr double	Gaudi::Units::h_Planck = 6.62606896e-34 * joule * s

constexpr double	Gaudi::Units::hbar_Planck = h_Planck / twopi

constexpr double	Gaudi::Units::hbarc = hbar_Planck * c_light

constexpr double	Gaudi::Units::hbarc_squared = hbarc * hbarc

constexpr double	Gaudi::Units::electron_charge = -eplus

constexpr double	Gaudi::Units::e_squared = eplus * eplus

constexpr double	Gaudi::Units::electron_mass_c2 = 0.510998910 * MeV

constexpr double	Gaudi::Units::proton_mass_c2 = 938.272013 * MeV

constexpr double	Gaudi::Units::neutron_mass_c2 = 939.56536 * MeV

constexpr double	Gaudi::Units::amu_c2 = 931.494028 * MeV

constexpr double	Gaudi::Units::amu = amu_c2 / c_squared

constexpr double	Gaudi::Units::mu0 = 4 * pi * 1.e-7 * henry / m

constexpr double	Gaudi::Units::epsilon0 = 1. / ( c_squared * mu0 )

constexpr double	Gaudi::Units::elm_coupling = e_squared / ( 4 * pi * epsilon0 )

constexpr double	Gaudi::Units::fine_structure_const = elm_coupling / hbarc

constexpr double	Gaudi::Units::classic_electr_radius = elm_coupling / electron_mass_c2

constexpr double	Gaudi::Units::electron_Compton_length = hbarc / electron_mass_c2

constexpr double	Gaudi::Units::Bohr_radius = electron_Compton_length / fine_structure_const

constexpr double	Gaudi::Units::alpha_rcl2 = fine_structure_const * classic_electr_radius * classic_electr_radius

constexpr double	Gaudi::Units::twopi_mc2_rcl2 = twopi * electron_mass_c2 * classic_electr_radius * classic_electr_radius

constexpr double	Gaudi::Units::k_Boltzmann = 8.617343e-11 * MeV / kelvin

constexpr double	Gaudi::Units::STP_Temperature = 273.15 * kelvin

constexpr double	Gaudi::Units::STP_Pressure = 1. * atmosphere

constexpr double	Gaudi::Units::kGasThreshold = 10. * mg / cm3

constexpr double	Gaudi::Units::universe_mean_density = 1.e-25 * g / cm3

Namespaces

Variables