hydro::units::nuclear Namespace Reference

The defining quantities of the nuclear fm-MeV/c^2-fm/c unit system. More...

Variables
constexpr double	mass_unit
	mass_nuclear = mass_unit * mass_geometric Heuristically a solar mass in MeV/c^2
constexpr double	length_unit = cgs::length_unit / (1.0e-13)
	length_nuclear = length_unit * length_geometric Heuristically GM_sun/c^2 in fm
constexpr double	time_unit
	time_nuclear = time_unit * time_geometric Heuristically GM_sun/c^3 in fm/c
constexpr double	pressure_unit = mass_unit / (length_unit * square(time_unit))
	pressure_nuclear = pressure_geometric * pressure_geometric Heuristically the rest-mass energy density of ~2200 the density of atomic nucli expressed in MeV/fm^3
constexpr double	rest_mass_density_unit = mass_unit / cube(length_unit)
	rest_mass_density_nuclear = rest_mass_density_geometric * rest_mass_density_geometric Heuristically ~2200 the density of atomic nucli expressed in MeV/c^2/fm^3
constexpr double	neutron_mass
constexpr double	atomic_mass_unit
constexpr double	proton_mass
	The proton mass in MeV, uncertainty at 5.8eV.
constexpr double	saturation_number_density = 0.16
	The saturation number density of baryons in nuclear matter, in units of 1/fm^3. This is a standard value, consistent with e.g. https://journals.aps.org/prc/abstract/10.1103/PhysRevC.102.044321.

Detailed Description

The defining quantities of the nuclear fm-MeV/c^2-fm/c unit system.

Constants are defined in terms of cgs units where possible, which are, in many cases known exactly due to their relation to SI.

Variable Documentation

atomic_mass_unit

double hydro::units::nuclear::atomic_mass_unit

constexpr

Initial value:

=
    cgs::atomic_mass_unit /
    (1.0e6 * cgs::electron_volt / square(cgs::speed_of_light))

mass_unit

double hydro::units::nuclear::mass_unit

constexpr

Initial value:

=
     cgs::mass_unit /
    (1.0e6 * cgs::electron_volt / square(cgs::speed_of_light))

mass_nuclear = mass_unit * mass_geometric Heuristically a solar mass in MeV/c^2

neutron_mass

double hydro::units::nuclear::neutron_mass

constexpr

Initial value:

=
    cgs::neutron_mass /
    (1.0e6 * cgs::electron_volt / square(cgs::speed_of_light))

proton_mass

double hydro::units::nuclear::proton_mass

constexpr

Initial value:

=
    cgs::proton_mass /
    (1.0e6 * cgs::electron_volt / square(cgs::speed_of_light))

The proton mass in MeV, uncertainty at 5.8eV.

time_unit

double hydro::units::nuclear::time_unit

constexpr

Initial value:

=
     cgs::time_unit / (1.0e-13 / cgs::speed_of_light)

time_nuclear = time_unit * time_geometric Heuristically GM_sun/c^3 in fm/c