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Double Photoionisation Spectra of Molecules$
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John Eland and Raimund Feifel

Print publication date: 2017

Print ISBN-13: 9780198788980

Published to Oxford Scholarship Online: March 2018

DOI: 10.1093/oso/9780198788980.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 24 September 2021

Atomic xenon, Xe

Atomic xenon, Xe

Chapter:
(p.17) Chapter 1 Atomic xenon, Xe (p.18)
Source:
Double Photoionisation Spectra of Molecules
Author(s):

John H. D. Eland

Raimund Feifel

Publisher:
Oxford University Press
DOI:10.1093/oso/9780198788980.003.0002

This chapter shows, using atomic xenon as a prototype, how coincidence maps and double photionisation spectra are created from the raw electron timing data, and how direct and indirect photoionisation pathways can be distinguished in the maps. A minor feature in the maps is recognised as coming from electron-impact single ionisation, which can be studied by the same technique. The chapter also explains how a simple formula can be used, with constants calibrated by measuring electrons of known energy, to convert the times of flight into kinetic energies. This introductory chapter concludes with a summary of some basic features of double photoionisation and of the spectra presented in this book, exemplified by Xe, including times of flight, energy resolution, ionisation, and Auger decay.

Keywords:   xenon, double photoionisation, coincidence maps, spectra

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