o2scl_fm Namespace Reference


Detailed Description

Constants in units of fm.

In nuclear physics is frequently convenient to work in units of $\mathrm{fm}$ with $\hbar=c=k_B=1$. Several useful constants are given here.

For example, mev gives 1 $\mathrm{MeV}$ in units of $\mathrm{fm}^{-1}$ (the solution to the equation $ 1 \mathrm{MeV} = x~\mathrm{fm}^{-1}$). If you have a number in $\mathrm{MeV}$, you can multiply by mev to get a number in units of $\mathrm{fm}^{-1}$. Alternatively, mev is a number with units $\mathrm{MeV}^{-1}\cdot\mathrm{fm}^{-1}$. These can be combined, so that erg divided by sec is 1 $\mathrm{erg/sec}$ in units of $\mathrm{fm}^{-2}$.


Variables

const double mev = 1.0/o2scl_const::hc_mev_fm
 1 $\mathrm{MeV}$ in $\mathrm{fm}^{-1}$
const double kg = mev/1.782661731e-30
 1 $\mathrm{kg}$ in $\mathrm{fm}^{-1}$
const double msun_per_km3 = gsl_mks::solar_mass/1.0e54*kg
 1 $M_{\odot}/km^{3}$ in $\mathrm{fm}^{-4}$
const double Kelvin = 8.617342e-11*mev
 1 $\mathrm{Kelvin}$ in $\mathrm{fm}^{-1}$
const double joule = kg/gsl_mks::speed_of_light/gsl_mks::speed_of_light
 1 $\mathrm{Joule}$ in $\mathrm{fm}^{-1}$
const double erg = kg/1.0e3/gsl_cgs::speed_of_light/gsl_cgs::speed_of_light
 1 $\mathrm{erg}$ in $\mathrm{fm}^{-1}$
const double sec = gsl_mks::speed_of_light*1.0e15
 1 $\mathrm{second}$ in $\mathrm{fm}$
Masses from Particle Physics Booklet
(see also D.E. Groom, et. al., Euro. Phys. J. C 15 (2000) 1.)

const double mass_electron = 0.510998902/o2scl_const::hc_mev_fm
 Electron mass in $ \mathrm{fm}^{-1} $.
const double mass_muon = 105.658357/o2scl_const::hc_mev_fm
 Muon mass in $ \mathrm{fm}^{-1} $.
const double mass_amu = 931.494013/o2scl_const::hc_mev_fm
 Atomic mass unit in $ \mathrm{fm}^{-1} $.
const double mass_neutron = 939.565/o2scl_const::hc_mev_fm
 Neutron mass in $ \mathrm{fm}^{-1} $.
const double mass_proton = 938.272/o2scl_const::hc_mev_fm
 Proton mass in $ \mathrm{fm}^{-1} $.
const double mass_lambda = 1115.683/o2scl_const::hc_mev_fm
 $\Lambda$ mass in $ \mathrm{fm}^{-1} $
const double mass_sigmam = 1197.45/o2scl_const::hc_mev_fm
 $\Sigma^{-}$ mass in $ \mathrm{fm}^{-1} $
const double mass_sigma = 1192.642/o2scl_const::hc_mev_fm
 $\Sigma^{0}$ mass in $ \mathrm{fm}^{-1} $
const double mass_sigmap = 1189.37/o2scl_const::hc_mev_fm
 $\Sigma^{+}$ mass in $ \mathrm{fm}^{-1} $
const double mass_cascadem = 1321.3/o2scl_const::hc_mev_fm
 $\Xi^{-}$ mass in $ \mathrm{fm}^{-1} $
const double mass_cascade = 1314.8/o2scl_const::hc_mev_fm
 $\Xi^{0}$ mass in $ \mathrm{fm}^{-1} $
const double mass_omega = 782.57/o2scl_const::hc_mev_fm
 $\omega$ mass in $ \mathrm{fm}^{-1} $
const double mass_rho = 769.3/o2scl_const::hc_mev_fm
 $\rho$ mass in $ \mathrm{fm}^{-1} $
www.nist.gov
const double mass_alpha = 3727.37905/o2scl_const::hc_mev_fm
 Alpha particle mass in $ \mathrm{fm}^{-1} $.


Variable Documentation

const double mass_alpha = 3727.37905/o2scl_const::hc_mev_fm

Alpha particle mass in $ \mathrm{fm}^{-1} $.

This does not include the mass of the additional two electrons which are present in a helium atom.

Definition at line 1066 of file constants.h.


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