Dramatic stimulation of tunneling by an rf field
Ivlev B. I., Mel'nikov V. I.
The correction to the argument of the tunneling exponential function which is linear in the amplitude of the field W cos Ωί is calculated for semiclassical potentials. In the frequency interval F> Ω > ω (Fis the potential amplitude, and ω is the oscillation frequency in the reversed potential) the effective field determining the barrier transmission is exponentially large in comparison with W: ^eff ~ % exP(^rs )> where rs ~