Phase Core Excitation Database
What is this database ? Core
This data base contains over 600 gas phase core excitation
spectra of more than 400 pure compounds recorded by dipole regime
electron energy loss spectroscopy at McMaster University from 1984
to the present. Typical uses include help in identifying unknown species,
and reference spectra for fitting spectra of mixtures, as encountered
in X-ray or EELS spectromicroscopy.
The spectra are calibrated to well characterized secondary standards
and the energy scales are generally accurate to 0.1 eV or better.
Each file contains at least two versions of the spectrum:
(1) the energy loss spectrum including pre-edge background on an accumulated
(2) the same spectrum converted to an oscillator strength per atom
In some cases a third version is included, whenever the signal of
a known contaminant - typically nitrogen or oxygen - has been subtracted.
The spectra are accessed by
1) select from one of the three indices
ordered by compound name
index ordered by molecular formula
2) identify the species of interest
3) click on the filename link (e.g. for N2
, the filename is nn-0cckk.os). This will pop-up a window allowing
raw or oscillator strength spectra
the data as a text file.
The database was first assembled in 1994 by Adam Hitchcock and
made available by Derrick Mancini at the Uppsala
University X-ray web site in conjunction with a publication of
an associated bibliography of gas phase core excitation spectra -
A.P. Hitchcock and
D.C. Mancini, J. Electron Spectroscopy and Related Phenomena 67 (1994)
The database was updated in 1998 by Laura Ennis.
The database was updated in 2002 by David Tulumello and Jasmyn Gill.
The plot display engine (in PHP) was added by David Tulumello in 2003.
The database structure and ploting system was updated by Jacob Stewart-Ornstein in 2005.
The latest version of the gas
phase core excitation bibliography was produced in June 2016 and
is a reasonably up-to-date listing of alll the literature reporting
gas phase inner shell excitation (electron photon or thoery) up to
If you use any data from this database, please give appropriate
credit to the source, both the database, and the publication in
the original literature, for which a reference is provided in the
file header if the spectrum has been published.
Spectra contained in this data base were recorded by
one or more of the following:
Undergraduate students: T. Steel
(1982), Rob McLaren (1986), Bruce Hollebone (1989), Rob DeWitte (1990),
Stephen Urquhart (1992), John Lehmann (1998), Laura Ennis (1999),
E. Al-Hassan (2000), Esta Halliday (2002), David Tulumello (2002,
Graduate students: Dave Newbury (1986),
Alex Wen (1992), James Francis (1995), Stephen Urquhart (1997), Cassia
Turci (1996), Gabriela Eustatiu (2000), Bob Lessard, Antonio Guerra,
Jian Wang, Hua Zhang
Postdoctoral fellows: Izumi Ishii, Alex
Visiting researchers: Eckart Ruhl, Mel
Robin, Elizabeth Apen, Allen Johnson, Nobuhiro Kosugi, Christine Dezarnaud,
Ed Rightor, Cassia Turci