Keldysh 1965 adiabaticity parameter separating the two limiting ionisation regimes under a strong laser field: γ = √(I_p/(2U_p)) = ω·√(2m_e I_p)/(eE₀), where I_p is the atomic ionisation potential and U_p = e²E₀²/(4m_eω²) is the…
Keldysh 1965 adiabaticity parameter separating the two limiting ionisation regimes under a strong laser field: γ = √(I_p/(2U_p)) = ω·√(2m_e I_p)/(eE₀), where I_p is the atomic ionisation potential and U_p = e²E₀²/(4m_eω²) is the…