High-resolution Pulsed-field Ionization Photoelectron Spectroscopy Using Multi-bunch Synchrotron Radiation PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages : 3
Book Description
BL9.0.2.2 is the newly constructed experimental End Station 2 at the Chemical Dynamics Beamline 9.0.2 of the Advanced Light Source (ALS). It is dedicated to the high resolution photoionization study of molecules of interest to atmospheric and combustion chemistry. This End Station is equipped with a high resolution scanning monochromator, which has been demonstrated to have a world record resolution of E/[delta]E=70,000. Taking the advantage of the high resolution ALS light, the authors have improved the energy resolution in threshold photoelectron spectroscopy (TPES) to 0.8 meV. The TPES is a popular technique for photoionization experiments at all synchrotron radiation facilities due to its high energy resolution as compared to that of traditional photoelectron spectroscopy (PES). TPES achieves higher energy resolution by preferentially detecting near zero kinetic energy photoelectrons resulting from threshold photoionization. However, the spectra obtained from the TPES technique generally are complicated by the simultaneous detection of electrons with nonzero kinetic energy, which are not fully discriminated against. On the other hand, the spectra obtained from pulsed field ionization photoelectron spectroscopy (PFI-PES) are completely free of the contamination from kinetic electrons. The PFI-PE technique basically involves the detection of the photoelectrons from field ionization of the very high-n Rydberg states, a few cm{sup -1} below the ionization energy (IE), by applying a delayed pulsed electric field. Within a delay of a few microseconds, all the prompt electrons formed from direct ionization will escape from the photoionization region and will not be collected. The authors have recently overcome problems with energy resolution of an electron time-of-flight technique, and incorporated the PFI-PE technique with multi-bunch VUV synchrotron radiation.
Author: Publisher: ISBN: Category : Languages : en Pages : 3
Book Description
BL9.0.2.2 is the newly constructed experimental End Station 2 at the Chemical Dynamics Beamline 9.0.2 of the Advanced Light Source (ALS). It is dedicated to the high resolution photoionization study of molecules of interest to atmospheric and combustion chemistry. This End Station is equipped with a high resolution scanning monochromator, which has been demonstrated to have a world record resolution of E/[delta]E=70,000. Taking the advantage of the high resolution ALS light, the authors have improved the energy resolution in threshold photoelectron spectroscopy (TPES) to 0.8 meV. The TPES is a popular technique for photoionization experiments at all synchrotron radiation facilities due to its high energy resolution as compared to that of traditional photoelectron spectroscopy (PES). TPES achieves higher energy resolution by preferentially detecting near zero kinetic energy photoelectrons resulting from threshold photoionization. However, the spectra obtained from the TPES technique generally are complicated by the simultaneous detection of electrons with nonzero kinetic energy, which are not fully discriminated against. On the other hand, the spectra obtained from pulsed field ionization photoelectron spectroscopy (PFI-PES) are completely free of the contamination from kinetic electrons. The PFI-PE technique basically involves the detection of the photoelectrons from field ionization of the very high-n Rydberg states, a few cm{sup -1} below the ionization energy (IE), by applying a delayed pulsed electric field. Within a delay of a few microseconds, all the prompt electrons formed from direct ionization will escape from the photoionization region and will not be collected. The authors have recently overcome problems with energy resolution of an electron time-of-flight technique, and incorporated the PFI-PE technique with multi-bunch VUV synchrotron radiation.
Author: Matthew Duane Evans Publisher: ISBN: Category : Languages : en Pages : 650
Book Description
The most exciting development has been coupling the traditionally laser based pulsed field ionization photoelectron (PFI-PE) technique with multibunch synchrotron radiation. Using the synchrotron based PFI-PE technique, rotationally resolved photoelectron spectra have been obtained for 02(b4[Sigma subscript g]−, v+), 02+(2 2[Pi subscript u], v+), 02 +(2[Sigma subscript u]−, v+), 02+(c4[Sigma subscript u]−, v+ = 0, 1), 02+(B4[Sigma subscript g]−, v+ = 0-7), and CO([Chi]2[Sigma]+, v+ = 0-42). Such spectra allowed the accurate determination of ionization energies and spectroscopic constants, as well as provided a means of studying photoionization dynamics in great detail. Predissociation lifetimes and the lifetimes of high-n Rydberg states have also been determined.
Author: Shigemasa Suga Publisher: Springer Nature ISBN: 3030640736 Category : Science Languages : en Pages : 511
Book Description
This book presents photoelectron spectroscopy as a valuable method for studying the electronic structures of various solid materials in the bulk state, on surfaces, and at buried interfaces. This second edition introduces the advanced technique of high-resolution and high-efficiency spin- and momentum-resolved photoelectron spectroscopy using a novel momentum microscope, enabling high-precision measurements down to a length scale of some tens of nanometers. The book also deals with fundamental concepts and approaches to applying this and other complementary techniques, such as inverse photoemission, photoelectron diffraction, scanning tunneling spectroscopy, as well as photon spectroscopy based on (soft) x-ray absorption and resonance inelastic (soft) x-ray scattering. This book is the ideal tool to expand readers’ understanding of this marvelously versatile experimental method, as well as the electronic structures of metals and insulators.
Author: Jeffrey N. Cutler Publisher: National Library of Canada = Bibliothèque nationale du Canada ISBN: 9780315812918 Category : High resolution spectroscopy Languages : en Pages : 0
Book Description
High resolution spectra of the Ge 3d and Sn 4d levels of several compounds are reported. The spectra of GeH$\sb4$ and AsH$\sb3$ demonstrate that the observed vibrational intensity is related to the metal's position on the Periodic Table. The spectra of GeF$\sb4$ and SnCl$\sb4$ prove that orbital interaction is possible between atomic levels thereby creating pseudo-bonding orbitals.
Author: Stephan Hüfner Publisher: Springer Science & Business Media ISBN: 3540681302 Category : Science Languages : en Pages : 411
Book Description
Photoemission spectroscopy is one of the most extensively used methods to study the electronic structure of atoms, molecules, and solids and their surfaces. This volume introduces and surveys the field at highest energy and momentum resolutions allowing for a new range of applications, in particular for studies of high temperature superconductors.
Author: Ivan Powis Publisher: John Wiley & Sons ISBN: Category : Science Languages : en Pages : 540
Book Description
Recent advances in both experimental techniques and theoretical methodologies have meant that increasingly sophisticated studies concerning the formation, structures, energetics, and reaction dynamics of state- or energy-selected molecular ions can now be performed. In order to better serve the ion chemistry and physics community, each volume of this series will be dedicated to reviewing a specific topic, emphasizing new experimental and theoretical developments in the study of ions. The Wiley Series in Ion Chemistry and Physics will help stimulate new research directions and point to future opportunities in the field of ion chemistry and physics. This fourth volume is devoted to developments associated with the high resolution study of molecular photoionization, presented from both experimental and theoretical viewpoints. This field has been revolutionized in recent years through the rapid development of zero kinetic energy (ZEKE) photoelectron spectroscopy, which is featured prominently within this volume. These advances have expanded the researcher' s ability to probe not just structural features, but also the detailed dynamics of a system, resulting in the interest and applicability of the technique being broadened to areas of chemical physics extending beyond the traditional study of photoionization per se. Each of the twelve chapters making up this volume is written by leading researchers in their respective fields.
Author: Publisher: ISBN: Category : Languages : en Pages : 138
Book Description
High resolution synchrotron radiation and Zero-Kinetic-Energy Photoelectron spectroscopy were used to study two-electron transitions in atomic systems at their ionization thresholds. Using this same technique the core-ionized mainline and satellite states of N2 and CO were studied with vibrational resolution. Vibrationally resolved synchrotron radiation was used to study the dissociation of N2, C2H4, and CH3Cl near the N 1s and C 1s thresholds. The photoelectron satellites of the argon 3s, krypton 4s and xenon 4d subshells were studied with zero kinetic energy photoelectron spectroscopy at their ionization thresholds. In all of these cases, satellites with lower binding energies are enhanced at their thresholds while those closer to the double ionization threshold are suppressed relative to their intensities at high incident light energies.
Author: Volker Schmidt Publisher: Cambridge University Press ISBN: 9780521550536 Category : Science Languages : en Pages : 454
Book Description
The study of electron spectrometry using synchrotron radiation is a growing field of research driven by the increasing availability of advanced synchrotron radiation light sources and improved theoretical methods for solving the many-electron problem in atoms. This balanced account, by a leading researcher in this field, will be of value to both theorists and experimentalists in atomic, molecular and chemical physicists.
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Author: Matthew Duane Evans
Author: Shigemasa Suga![High Resolution Photoelectron Spectroscopy Using Synchrotron Radiation [microform] : Ligand Field and Vibrational Splitting and Chemical Effects on Linewidths PDF](https://books.google.com/books/content/images/frontcover/skp10AEACAAJ?fife=w80-h100)
Author: Jeffrey N. Cutler
Author: Stephan Hüfner
Author: Ivan Powis
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Author: Jeffrey N. Cutler
Author: Volker Schmidt
Author: Ximei Qian