Keldysh Parameter calculator
Intenisty, I =
PW/cm
2
Wavelength, ¦Ë
nm
Ip (ionization potential)
eV, 13.6 (H), 20.18 (Ne), 15.76 (Ar),14.00 (Kr), 12.13 (Xe)
Periodic table by NIST
Ponderomotive energy, Up = 9.337 38 x 10
-5
I [PW/cm
2
] ¦Ë
2
[nm] =
eV
Keldysh parameter, ¦Ã = sqrt (Ip/2Up) =
Over barrier field, Fc(au)= Ip(au)
2
/2/[2-sqrt(2Ip(au))] =
Corresponding Intensity, Ic (TW/cm
2
)=