Applying ZEKE-spectroscopy to clusters
نویسنده
چکیده
In this paper we describe the application of a special form of electron photodetachment spectroscopy, zero electron kinetic energy (ZEKE) spectroscopy, to the study of cold metal cluster anions. From this study we have obtained vibrational and thus structural information of several neutral and charged clusters, e.g. Au~ -/°, Ag3/°, Sn~ m and A13/0 In addition, in separate measurements of the relative photodetachment cross section of AuS, we have discovered sharp resonances which are due to electronic autodetachment from a short lived excited state. PACS: 36.40. + d; 33.60. q
منابع مشابه
A master equation approach to the dynamics of zero electron kinetic energy (ZEKE) states and ZEKE spectroscopy.
We have theoretically studied important dynamic processes involved in zero electron kinetic energy (ZEKE) spectroscopy using the density matrix method with the inverse Born-Oppenheimer approximation basis sets. In ZEKE spectroscopy, the ZEKE Rydberg states are populated by laser excitation (either a one- or two-photon process), which is followed by autoionizations and l-mixing due to a stray fi...
متن کاملMass Selected ZEKE-Spectra of FeC2-Anions: A Spectroscopic Access to Intermediates in Catalytic Reactions of Hydrocarbons on Metal Surfaces
Zero-kinetic-energy (ZEKE) photoelectron spectra of metalcarbide anions are presented, allowing a high resolu tion spectroscopic access to intermediates in catalytic reac tions of hydrocarbons on metal surfaces. As a first compound, FeC2 (an intermediate of the iron/acetylene system) has been chosen. Important for successful ZEKE spectroscopy was a special anion source and the selection by ti...
متن کاملTheoretical studies of ZEKE spectroscopy and dynamics of high Rydberg states
A main purpose of this Letter is to show how to employ the inverse Born–Oppenheimer approximation as a basis set to study zero kinetic energy (ZEKE) spectroscopy and the autoionization dynamics of the ZEKE states. The calculations of channel couplings, quantum defects, intensity borrowing, vibrational and rotational autotionizations will be demonstrated by using a homonuclear diatomic molecule ...
متن کاملCoherent stabilization of zero-electron-kinetic-energy states
The accuracy of zero-electron-kinetic-energy ~ZEKE! photoelectron spectroscopy rests on the ultralong lifetimes of the high-n, high-l Rydberg states that are responsible for the ZEKE signal. However, a few-photon process cannot excite electrons directly from the low-l ground state to the high-l ZEKE manifold. In this paper we show that using the dynamics of Rydberg Stark states in slowly time d...
متن کاملZero electron kinetic energy and photoelectron spectroscopy of the XeI anion
The XeI anion and the corresponding neutral X1/2, I3/2, and II1/2 electronic states have been studied by means of zero electron kinetic energy ~ZEKE! and photoelectron spectroscopy. The ZEKE spectra show rich and well-resolved progressions in the low-frequency vibrations of the anion and the neutral van der Waals complexes. From our spectroscopic data we construct model potentials for the anion...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005