23#ifndef CLASSIC_Physics_HH 
   24#define CLASSIC_Physics_HH 
   30    constexpr double pi         = 3.14159265358979323846;
 
   39    constexpr double e          = 2.7182818284590452354;
 
   42    constexpr double log10e     = 0.43429448190325182765;
 
   45    constexpr double c          = 299792458.0;
 
   48    constexpr double mu_0       = 1.25663706212e-06;
 
   54    constexpr double h_bar      = 6.582119569e-25;
 
   57    constexpr double Avo        = 6.02214076e23;
 
   60    constexpr double kB         = 8.617333262e-5;
 
   63    constexpr double E_ryd      = 13.605693122994e-9;
 
   66    constexpr double a0         = 5.29177210903e-11;
 
   69    constexpr double q_e        = 1.602176634e-19;
 
   72    constexpr double alpha      = 7.2973525693e-03;
 
   75    constexpr double amu        = 0.93149410242;
 
   78    constexpr double m_e        = 0.51099895000e-03;
 
   81    constexpr double r_e        = 2.8179403262e-15;
 
   84    constexpr double lamda_e    = 3.8615926796e-13;
 
   87    constexpr double a_e        = 1.15965218128e-03;
 
   90    constexpr double m_p        = 0.93827208816e+00;
 
   93    constexpr double r_p        = 1.53469857e-18;
 
   96    constexpr double lamda_p    = 2.10308910336e-16;
 
   99    constexpr double a_p        = 1.792847386e+00;
 
  105    constexpr double m_c        = 11.9967074146787 * 
amu;
 
  114    constexpr double m_mu       = 0.1056583755;
 
  117    constexpr double m_d        = 2.013553212745 * 
amu;
 
  126    constexpr double m_h        = 1.00782503224 * 
amu;
 
  134    constexpr double PMASS      = 1.67262192369e-27; 
 
  136    constexpr double EMASS      = 9.1093837015e-31; 
 
  141    constexpr double Ia         = 17.045148e+03;
 
  143    constexpr double e0m        = 1.75882001076e+11;
 
constexpr double lamda_e
The reduced Compton wave length for electrons in m.
 
constexpr double u_two_pi
The value of.
 
constexpr double m_xe
The xenon-129 (fully-stripped) rest mass in GeV.
 
constexpr double kB
Boltzman's constant in eV/K.
 
constexpr double m_alpha
The alpha particle rest mass in GeV.
 
constexpr double m_u
The uranium-238 (fully-stripped) rest mass in GeV.
 
constexpr double amu
The atomic mass unit energy equivalent in GeV.
 
constexpr double two_pi
The value of.
 
constexpr double lamda_p
The reduced Compton wave length for protons in m.
 
constexpr double a_p
The magnetic momentum anomaly for protons, no dimension.
 
constexpr double a0
Bohr radius in m.
 
constexpr double h_bar
The reduced Planck constant in GeVs.
 
constexpr double epsilon_0
The permittivity of vacuum in As/Vm.
 
constexpr double Avo
The Avogadro's number.
 
constexpr double m_p
The proton rest mass in GeV.
 
constexpr double m_h3p
The H3+ rest mass in GeV.
 
constexpr double m_h2p
The H2+ rest mass in GeV.
 
constexpr double z_p
The charge of proton.
 
constexpr double alpha
The fine structure constant, no dimension.
 
constexpr double q_e
The elementary charge in As.
 
constexpr double a_e
The magnetic momentum anomaly for electrons, no dimension.
 
constexpr double m_e
The electron rest mass in GeV.
 
constexpr double m_hm
The H- rest mass in GeV.
 
constexpr double E_ryd
Rydberg's energy (Rydberg's constant times hc) in GeV.
 
constexpr double m_h
The hydrogen atom rest mass in GeV.
 
constexpr double m_mu
The muon rest mass in GeV.
 
constexpr double e
The value of.
 
constexpr double mu_0
The permeability of vacuum in Vs/Am.
 
constexpr double c
The velocity of light in m/s.
 
constexpr double m_c
The carbon-12 (fully-stripped) rest mass in GeV.
 
constexpr double r_p
The classical proton radius in m.
 
constexpr double m_d
The deuteron rest mass in GeV.
 
constexpr double pi
The value of.
 
constexpr double r_e
The classical electron radius in m.
 
constexpr double log10e
The logarithm of $e$ to the base 10.