High-energy cutoff in the spectrum of strong-field nonsequential double ionization.
نویسندگان
چکیده
Electron energy distributions of singly and doubly ionized helium in an intense 390 nm laser field have been measured at two intensities (0.8 PW/cm2 and 1.1 PW/cm2, where PW is defined as 10(15) W/cm2). Numerical solutions of the full-dimensional time-dependent helium Schrödinger equation show excellent agreement with the experimental measurements. The high-energy portion of the two-electron energy distributions reveals an unexpected 5U(p) cutoff for the double ionization (DI) process and leads to a proposed model for DI below the quasiclassical threshold.
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ورودعنوان ژورنال:
- Physical review letters
دوره 96 13 شماره
صفحات -
تاریخ انتشار 2006