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Object-oriented Scientific Computing Library: Version 0.910
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Constants in units of fm. More...
In nuclear physics is frequently convenient to work in units of with
. Several useful constants are given here.
For example, mev gives 1 in units of
(the solution to the equation
). If you have a number in
, you can multiply by mev to get a number in units of
. Alternatively, mev is a number with units
. These can be combined, so that erg divided by sec is 1
in units of
.
/todo Make e.g. neutron mass consistent with the GSL ones somehow.
Variables | |
const double | mev = 1.0/o2scl_const::hc_mev_fm |
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const double | kg = mev*5.60958885e29 |
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const double | Kelvin = 8.6173324e-11*mev |
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const double | joule = kg/gsl_mks::speed_of_light/gsl_mks::speed_of_light |
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const double | msun_per_km3 = gsl_mks::solar_mass/1.0e54*kg |
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const double | erg = kg/1.0e3/gsl_cgs::speed_of_light/gsl_cgs::speed_of_light |
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const double | sec = gsl_mks::speed_of_light*1.0e15 |
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const double | ec_gauss_fm2 |
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const double | gauss2_fm4 = ec_gauss_fm2*ec_gauss_fm2/gsl_num::fine_structure |
Conversion factor from ![]() ![]() | |
From http://physics.nist.gov/cuu/index.html (7/27/11) | |
const double | mass_neutron = 939.565379/o2scl_const::hc_mev_fm |
Neutron mass in ![]() | |
const double | mass_proton = 938.272046/o2scl_const::hc_mev_fm |
Proton mass in ![]() | |
const double | mass_electron = 0.510998928/o2scl_const::hc_mev_fm |
Electron mass in ![]() | |
const double | mass_muon = 105.6583715/o2scl_const::hc_mev_fm |
Muon mass in ![]() | |
const double | mass_amu = 931.494061/o2scl_const::hc_mev_fm |
Atomic mass unit in ![]() | |
const double | mass_alpha = 3727.379240/o2scl_const::hc_mev_fm |
Alpha particle mass in ![]() | |
Masses from Particle Physics Booklet | |
(see also D.E. Groom, et. al., Euro. Phys. J. C 15 (2000) 1.) | |
const double | mass_lambda = 1115.683/o2scl_const::hc_mev_fm |
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const double | mass_sigmam = 1197.45/o2scl_const::hc_mev_fm |
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const double | mass_sigma = 1192.642/o2scl_const::hc_mev_fm |
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const double | mass_sigmap = 1189.37/o2scl_const::hc_mev_fm |
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const double | mass_cascadem = 1321.3/o2scl_const::hc_mev_fm |
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const double | mass_cascade = 1314.8/o2scl_const::hc_mev_fm |
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const double | mass_omega = 782.57/o2scl_const::hc_mev_fm |
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const double | mass_rho = 769.3/o2scl_const::hc_mev_fm |
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const double o2scl_fm::mass_alpha = 3727.379240/o2scl_const::hc_mev_fm |
This does not include the mass of the additional two electrons which are present in a helium atom.
Definition at line 1040 of file constants.h.
const double o2scl_fm::ec_gauss_fm2 |
Definition at line 1091 of file constants.h.
const double o2scl_fm::gauss2_fm4 = ec_gauss_fm2*ec_gauss_fm2/gsl_num::fine_structure |
This is useful, e.g. in converting magnetic field squared to an energy density.
Definition at line 1100 of file constants.h.
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