Technician License Course Chapter 3 Lesson Plan Module 5 – Ohm’s Law, Power, and the Metric System.
KolXPD · documents, manuals, tutorials and this poster • Purchase a license or make a donation,...
Transcript of KolXPD · documents, manuals, tutorials and this poster • Purchase a license or make a donation,...
Preparation
chamber
Experimental
chamber
Beam intensity
measurement MonochromatorPrefocus
mirror
Analyser
controller
Monochromator
controller & PC
Prefocus mirror
controller & PC
electron
analyser
X-ray
LEED
camera
ma
nip
ula
torm
an
ipu
lato
r
stepping motors
z z
θ
φ
motor controllers
Materials Science Beamline, Synchrotron Elettra, Trieste, Italy
System integration and automation by Jiří Libra (www.kolibrik.net)
Legend:
* only significant parts of system are shown
Bakeout controller
thermocouples
heating elements
PC for experiment control PC for beamline control
XC-BUS(RS485)
converter
BCS - Elettra's Beamline Control System(beamline/ring status, chamber pressures, etc.)
Analyzer
driver
NI/Labview
driver
USB driver
SpecsLab
KolXPDexperiment
automation
KolLEED
mesh current
Mesh current
watcher
Motor
Control
Pressure watcher
& exposure meter
gra
bb
er
ADC
driverAD
C
Kleopatramonochromator
control
Mesh current
monitor
& logger
data import
USB
CO
M
eth
eth
eth
BENDING
MAGNET
Electronics developed and built
by Jiří Libra
Software developed by Jiří Libra
Analog and power links
Communication links
Main features:
- automatic monochromator and
prefocus mirror control
- measurements with synchrotron radiation
(SRPES)
- automated angle-resolved experiments
(XPD, ARPES, ...)
- automated energy-resolved experiments
(RESPES, NEXAFS, XANES, ...)
COM
2011/06 Jiří Libra
Al2O3/Cu91Al9(111)2D angle-resolved spectra of core-levelsand valence band can be measured. All measured spectra can be automaticallyfitted and components of fit can be usedfor displaying a pattern.Valence band can be displayed as polaror azimuthal plot or as 2D map likeFermi surface map.
Cu 3s Al 2s (metal) Al 2s (oxide)
127 126 125 124 123 122 121 120 119 118 117 116
Binding Energy [eV]
oxide
metal
Cu 3sAl 2s
emitters
3
4
Sn/Pd(111) (2x2)
emitters
2
5
1
Layer 1 Layer 2 Layer 3 Layer 4 Layer 5
sum of contributions experiment
Watch video-tutorial at
http://www.kolibrik.net/kolxpd/
How to import 15 spectra, make graphs, fit
peaks and analyze results in 90 seconds !!!
Tutorial steps:
• start: 15 raw XY text files with sample spectra (2 doublets)
• import to KolXPD by single drag-and-drop
• place spectra to one graph, change x-axis to binding energy
• change display to waterfall and color-filled peak area
• define x-axis range and fitting function for middle spectrum
• automatically fit all spectra with this function
• display fit results
• export area evolution of doublets and display in new graph
• fit area evolution with linear function
All this done in 90 seconds!
Video snapshots:
software for photoelectron spectroscopydata measurement and processing
KolXPDKolXPD• Import and export of variety formats
• Huge amount of data handling
• Fitting, waterfall charts, quantitative preview
• Functionality customizable on request
FEATURE HIGHLIGHTS
• Focused to photoelectron spectroscopy
• Very fast data viewing and processing
• Energy- and angle-resolved experiments
Synchrotorn Elettra
Trieste, ItalyCharles University
in Prague, Czech RepublicAcademy of Sciences of the
Czech Republic, Prague
Heinrich-Heine-Universität Düsseldorf, Germany
Synchrotorn SPring-8Sayo, Japan
National Institute for Materials Science
Tsukuba, Japan
most significant institutes where KolXPD is used
1500
750
0
2250
5 4 3 2 1 0 -1
130
127.5
125
122.5
120
117.5
115
Binding Energy [eV]
h[e
V]
νInte
nsity [a
rb.u
.]
6789
3000
4000
2000
0
6000
5 4 3 2 1 0 -1130
127.5
125
122.5
120
117.5
115
Binding Energy V[e ]
h[e
V]
νInte
nsity [
arb
.u.]
6789
8000
hν = 124.8eV, EB = 4eV hν = 121.4eV, EB = 1.8eV
Angle- and energy-resolved photoemission experimentsacquired using KolXPD at Materials Science Beamline, synchrotron Elettra
Angle-resolved photoemission experimentsacquired using KolXPD at Charles University in Prague
Reference papers and results where KolXPD was used for measurement and data processing
• J. Libra, V. Matolín, Surf. Sci. 600 (2006) 2317Angle resolved photoemission study of the Ce/Pd(111) interface
• J. Libra, et al., Phys. Rev. B 76 (2007) 165438Angle-resolved photoemission study of ordered Pb/Ni(111) surface phases
• V. Matolín, J. Libra, Surf. Sci. 601 (2007) 4058–4062Fermi surface and band mapping of the cerium/palladium surface alloy
• M. Škoda, J. Libra, et al., Surface Science 601 (2007) 4958A resonant photoemission study of the Ce and Ce-oxide/Pd(111) interfaces
• V. Matolín, J. Libra, et al., J. Phys. Chem. C 112 (2008) 3751Photoemission spectroscopy study of Cu/CeO2 systems:
Cu/CeO2 nanosized catalyst and CeO2(111)/Cu(111) inverse model catalyst
About author
Mgr. Jiří Libra, Ph.D. (email: [email protected])
• Surface science experienced during 10 years spent in Department of
Surface and Plasma Science at Faculty of Mathematics and Physics,
Charles University in Prague under supervision of prof. Vladimír Matolín
• Business activities: development of software and electronics (not only) for
science. Experiment automation, data acquisition and processing,
electronics for angle-resolved experiments, software for beamline
monochromator control, scientific device interfacing, etc.
KolXPD Web
http://www.kolibrik.net/kolxpd/
• You can download KolXPD and track new versions, download
documents, manuals, tutorials and this poster
• Purchase a license or make a donation, get a trial license for evaluation
• Contact author, visit KolXPD forum, discuss with other KolXPD users
Fermi surface map Valence band polar scan
XPD pattern calculations made by EDAC*patterns and clusters can be vizualized by KolXPD
*Software for X-ray photoelectron diffraction (XPD) pattern calculations F. J. García de Abajo, M. A. Van Hove, and C. S. Fadley, Phys. Rev. B 63, 075404 2001.
KolXPD can control both manipulator and monochromator – energy-resolved experiments like NEXAFS, resonantphotoemission, etc. are possible. Graphs below show resonant experiment on cerium-oxide and XPD patternsacquired at two different resonant photon energies.