<gh_stars>1-10
import math

# cgs units to match ARTIS
EV = 1.6021772e-12  # eV in erg
H = 6.6260755e-27   # in erg s
ME = 9.1093897e-28  # mass of electron in g
QE = 4.80325E-10    # elementary charge in statcoulomb
H_ionpot = 13.5979996 * EV  # ionisation potential of hydrogen
CLIGHT = 2.99792458e+10  # speed of light in in cm/s
K_B = 8.617333262145e-5  # eV / K
PI = math.pi

import math

# cgs units to match ARTIS
EV = 1.6021772e-12  # eV in erg
H = 6.6260755e-27   # in erg s
ME = 9.1093897e-28  # mass of electron in g
QE = 4.80325E-10    # elementary charge in statcoulomb
H_ionpot = 13.5979996 * EV  # ionisation potential of hydrogen
CLIGHT = 2.99792458e+10  # speed of light in in cm/s
K_B = 8.617333262145e-5  # eV / K
PI = math.pi
# cgs units to match ARTIS # eV in erg # in erg s # mass of electron in g # elementary charge in statcoulomb # ionisation potential of hydrogen # speed of light in in cm/s # eV / K