Experimental retrieval of target structure information from laser-induced rescattered photoelectron momentum distributions.
نویسندگان
چکیده
We have measured two-dimensional photoelectron momentum spectra of Ne, Ar, and Xe generated by 800-nm, 100-fs laser pulses and succeeded in identifying the spectral ridge region (back-rescattered ridges) which marks the location of the returning electrons that have been backscattered at their maximum kinetic energies. We demonstrate that the structural information, in particular the differential elastic scattering cross sections of the target ion by free electrons, can be accurately extracted from the intensity distributions of photoelectrons on the ridges, thus effecting a first step toward laser-induced self-imaging of the target, with unprecedented spatial and temporal resolutions.
منابع مشابه
Analysis of two-dimensional high-energy photoelectron momentum distributions in the single ionization of atoms by intense laser pulses
We analyzed the two-dimensional 2D electron momentum distributions of high-energy photoelectrons of atoms in an intense laser field using the second-order strong field approximation SFA2 . The SFA2 accounts for the rescattering of the returning electron with the target ion to first order and its validity is established by comparing with results obtained by solving the time-dependent Schrödinger...
متن کاملAccurate retrieval of structural information from laser-induced photoelectron and high-order harmonic spectra by few-cycle laser pulses.
By analyzing accurate theoretical results from solving the time-dependent Schrödinger equation of atoms in few-cycle laser pulses, we established the general conclusion that laser-generated high-energy electron momentum spectra and high-order harmonic spectra can be used to extract accurate differential elastic scattering and photo-recombination cross sections of the target ion with free electr...
متن کاملRetrieval of experimental differential electron–ion elastic scattering cross sections from high-energy ATI spectra of rare gas atoms by infrared lasers
Based on the concept of the recently developed quantitative rescattering theory for the momentum distributions of high-energy photoelectrons generated by infrared lasers, we applied the theory to extract large-angle elastic differential cross sections (DCS) of the target ions with free electrons. Using experimental photoelectron spectra for rare gas atoms of Ne, Ar, Kr and Xe, we showed that th...
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 کاملRevealing backward rescattering photoelectron interference of molecules in strong infrared laser fields
Photoelectrons ionized from atoms and molecules in a strong laser field are either emitted directly or rescattered by the nucleus, both of which can serve as efficiently useful tools for molecular orbital imaging. We measure the photoelectron angular distributions of molecules (N2, O2 and CO2) ionized by infrared laser pulses (1320 nm, 0.2 ~ 1 × 10(14) W/cm(2)) from multiphoton to tunneling reg...
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:
- Physical review letters
دوره 100 14 شماره
صفحات -
تاریخ انتشار 2008