# conversion constants to atomic units

hbar = 1.0

m_e = 1.0

a_0 = 1.0

e = 1.0

hartree = 1.0

Eh = hartree

nm = 1.8897261246257702e1

Å = 1.8897261246257702

eV = 0.03674932217565499

ps = 4.134137333518212e4

picoseconds = 4.134137333518212e4

fs = 4.134137333518212 * 10.

femtoseconds = 4.134137333518212 * 10.

V = 0.03674932217565499

V_m = 1.9446903811488876e-12

T = 4.254382157326325e-06

m = 1.8897261246257702e10

C = 6.241509074460763e+18

s = 4.134137333518173e+16

Hz = 2.4188843265857225e-17

kg = 1.0977691057577634e30

J = 2.293712278396328e+17

A = 150.974884744557

# some physical constants, expressed in atomic units

k = 0.5 # hbar**2 / (2*m_e)

m_p = 1836.1526734400013

𝜇0 = 0.0006691762566207213

ε0 = 0.0795774715459477

c = 137.035999083818

α = 0.0072973525693