Strong-field double ionization of rare gases.
نویسندگان
چکیده
We have studied the double ionization of helium and other rare gases using an electron-ion coincidence technique. With this scheme, the electron energy spectrum correlated to the creation of a doubly charged ion may be compiled. In all cases, the observed double ionization electron distributions are similar and enhanced at high energies, while the single ionization spectra exhibit distinct differences.
منابع مشابه
Calculations of Strong Field Multiphoton Processes in Alkali Metal Atoms
The development of a new class of laser systems, capable of producing intense radiation in the mid-infrared (MIR) regime (photon energies between 0.3 and 0.4 eV), opens the possibility of observing multiphoton processes in a new class of systems with lower ionization potentials than those previously studied. Of particular interest are the alkali metal atoms, which are true one-(valence)-electro...
متن کاملStrong field double ionization: What is under the ''knee''?
Both uncorrelated (“sequential”) and correlated (“nonsequential”) processes contribute to the double ionization of the helium atom in strong laser pulses. The double ionization probability has a characteristic “knee” shape as a function of the intensity of the pulse. We investigate the phase-space dynamics of this system, specifically by finding the dynamical structures that regulate the ioniza...
متن کاملMolecular Double Ionization Using Strong Field Few-Cycle Laser Pulses.
We study strong field double ionization of a series of organic molecules by making use of coincidence detection of fragment ions. We measure the double ionization yield as a function of pulse duration, intensity, polarization, and molecular conjugation. For conjugated molecules we find strong enhancement in the double ionization rate over what one would expect on the basis of tunneling or multi...
متن کاملMultiple Ionization of Atoms by 25 and 7 fs Laser Pulses
Double, triple and fourfold ionization of rare gas atoms has been studied using a “reaction microscope”. We show that ionization dynamics drastically depends on atomic species and present the first data obtained with few-cycle pulses. Since the first experimental observation of doubly charged ions produced by intense laser field [1], many-electron dynamics in laser-induced ionization has been t...
متن کاملObservation of a transition in the dynamics of strong-field double ionization.
The double ionization of argon and xenon in an intense laser field has been studied in detail using an electron-ion coincidence technique. The observed double ionization electron spectra in xenon show resonancelike structures here resolved for the first time. In argon, the featureless spectra are consistent with rescattering. This represents a clear transition in the dynamics of strong-field do...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Optics express
دوره 8 7 شماره
صفحات -
تاریخ انتشار 2001