09:15 〜 09:30
▲ [21a-S622-2] Strong x-ray induced resonant Auger decay from core-excited states
キーワード：x-ray,resonant Auger decay
We theoretically investigate the resonant Auger decay of Ne atoms exposed to a strong x-ray pulse of few femtoseconds duration. The x-ray pulse, of duration ~ 2 fs, generates a core-excited state wavepacket by simultaneously populating two core-excited states. The intensity of the x-ray pulse is sufficiently strong to induce Rabi oscillations between the ground and two core-excited states of Ne atom within the lifetime of the core-excited states (~2.4 fs). The total (energy-integrated) Auger electron yield and the energy-resolved Auger electron spectra obtained from the coherently excited superposition of core-excited states shows a strong dependence on the variation of the intensity of the x-ray pulse, and moreover, they are significantly different from those through the individually excited core-excited states.
In general, the strong x-ray pulse induced Rabi oscillations between the ground and a core-excited state is manifested in the form of asymmetric splitting in the Auger electron spectra. We investigate to what extent the Auger electron spectra is modified because of the x-ray induced Rabi oscillations between the ground and coherently superposed core-excited states. We also perform the numerical dressed state calculations to interpret the origin of such x-ray induced splitting in the Auger electron spectra.
In general, the strong x-ray pulse induced Rabi oscillations between the ground and a core-excited state is manifested in the form of asymmetric splitting in the Auger electron spectra. We investigate to what extent the Auger electron spectra is modified because of the x-ray induced Rabi oscillations between the ground and coherently superposed core-excited states. We also perform the numerical dressed state calculations to interpret the origin of such x-ray induced splitting in the Auger electron spectra.