ATLAS Offline Software
Namespaces | Variables
PhysicalConstants.py File Reference

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Namespaces

 python.PhysicalConstants
 

Variables

float python.PhysicalConstants.pi = 3.14159265358979323846
 
int python.PhysicalConstants.twopi = 2*pi
 
float python.PhysicalConstants.halfpi = pi/2
 
float python.PhysicalConstants.pi2 = pi*pi
 
float python.PhysicalConstants.Avogadro = 6.0221367e+23/mole
 
float python.PhysicalConstants.c_light = 2.99792458e+8 * m/s
 
float python.PhysicalConstants.c_squared = c_light * c_light
 
float python.PhysicalConstants.h_Planck = 6.6260755e-34 * joule*s
 
float python.PhysicalConstants.hbar_Planck = h_Planck/twopi
 
float python.PhysicalConstants.hbarc = hbar_Planck * c_light
 
float python.PhysicalConstants.hbarc_squared = hbarc * hbarc
 
 python.PhysicalConstants.electron_charge = - eplus
 
 python.PhysicalConstants.e_squared = eplus * eplus
 
float python.PhysicalConstants.electron_mass_c2 = 0.51099906 * MeV
 
float python.PhysicalConstants.proton_mass_c2 = 938.27231 * MeV
 
float python.PhysicalConstants.neutron_mass_c2 = 939.56563 * MeV
 
float python.PhysicalConstants.amu_c2 = 931.49432 * MeV
 
float python.PhysicalConstants.amu = amu_c2/c_squared
 
int python.PhysicalConstants.mu0 = 4*pi*1.e-7 * henry/m
 
int python.PhysicalConstants.epsilon0 = 1./(c_squared*mu0)
 
 python.PhysicalConstants.elm_coupling = e_squared/(4*pi*epsilon0)
 
float python.PhysicalConstants.fine_structure_const = elm_coupling/hbarc
 
float python.PhysicalConstants.classic_electr_radius = elm_coupling/electron_mass_c2
 
float python.PhysicalConstants.electron_Compton_length = hbarc/electron_mass_c2
 
float python.PhysicalConstants.Bohr_radius = electron_Compton_length/fine_structure_const
 
float python.PhysicalConstants.alpha_rcl2 = fine_structure_const*classic_electr_radius*classic_electr_radius
 
int python.PhysicalConstants.twopi_mc2_rcl2 = twopi*electron_mass_c2*classic_electr_radius*classic_electr_radius
 
float python.PhysicalConstants.k_Boltzmann = 8.617385e-11 * MeV/kelvin
 
float python.PhysicalConstants.STP_Temperature = 273.15*kelvin
 
int python.PhysicalConstants.STP_Pressure = 1.*atmosphere
 
int python.PhysicalConstants.kGasThreshold = 10.*mg/cm3
 
int python.PhysicalConstants.universe_mean_density = 1.e-25*g/cm3