8 #ifndef ABLASTR_CONSTANT_H_
9 #define ABLASTR_CONSTANT_H_
20 using namespace amrex::literals;
23 static constexpr amrex::Real
pi = 3.14159265358979323846_rt;
26 static constexpr amrex::Real
tau = 2.0_rt *
pi;
41 using namespace amrex::literals;
44 static constexpr
auto c = 299'792'458._rt;
46 static constexpr
auto ep0 = 8.8541878128e-12_rt;
48 static constexpr
auto mu0 = 1.25663706212e-06_rt;
50 static constexpr
auto q_e = 1.602176634e-19_rt;
52 static constexpr
auto m_e = 9.1093837015e-31_rt;
54 static constexpr
auto m_p = 1.67262192369e-27_rt;
56 static constexpr
auto m_u = 1.66053906660e-27_rt;
59 static constexpr
auto hbar = 1.054571817e-34_rt;
61 static constexpr
auto alpha = 0.007297352573748943_rt;
63 static constexpr
auto r_e = 2.817940326204929e-15_rt;
65 static constexpr
double xi = 1.3050122447005176e-52;
67 static constexpr
auto xi_c2 = 1.1728865132395492e-35_rt;
70 static constexpr
auto kb = 1.380649e-23_rt;
75 static constexpr
auto MeV =
q_e * 1e6_rt;
static constexpr auto r_e
classical electron radius = 1./(4*pi*ep0) * q_e*q_e/(m_e*c*c) [m]
Definition: constant.H:63
static constexpr auto alpha
fine-structure constant = mu0/(4*pi)*q_e*q_e*c/hbar [dimensionless]
Definition: constant.H:61
static constexpr auto MeV
1 MeV in [J]
Definition: constant.H:75
static constexpr auto xi_c2
xi times c2 = xi*c*c. This should be usable for single precision instead of xi; very close to smalles...
Definition: constant.H:67
static constexpr auto MeV_invc
1 MeV/c in [kg*m/s]
Definition: constant.H:79
static constexpr auto c
vacuum speed of light [m/s]
Definition: constant.H:44
static constexpr auto eV_invc
1 eV/c in [kg*m/s]
Definition: constant.H:77
static constexpr auto MeV_invc2
1 MeV/c^2 in [kg]
Definition: constant.H:83
static constexpr auto ep0
vacuum permittivity: dielectric permittivity of vacuum [F/m]
Definition: constant.H:46
static constexpr auto eV
1 eV in [J]
Definition: constant.H:73
static constexpr auto m_p
proton mass [kg]
Definition: constant.H:54
static constexpr auto kb
Boltzmann constant (exact) [J/K].
Definition: constant.H:70
static constexpr auto mu0
vacuum permeability: magnetic permeability of vacuum = 4.0e-7 * pi [H/m]
Definition: constant.H:48
static constexpr auto hbar
reduced Planck Constant = h / tau [J*s]
Definition: constant.H:59
static constexpr auto m_e
electron mass [kg]
Definition: constant.H:52
static constexpr auto eV_invc2
1 eV/c^2 in [kg]
Definition: constant.H:81
static constexpr double xi
xi: nonlinearity parameter of Heisenberg-Euler effective theory = (2.*alpha*alpha*ep0*ep0*hbar*hbar*h...
Definition: constant.H:65
static constexpr auto m_u
dalton: unified atomic mass unit [kg]
Definition: constant.H:56
static constexpr auto q_e
elementary charge [C]
Definition: constant.H:50
static constexpr amrex::Real tau
https://tauday.com/tau-manifesto
Definition: constant.H:26
static constexpr amrex::Real pi
ratio of a circle's circumference to its diameter
Definition: constant.H:23
Definition: constant.H:16