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Far-Infrared Beamline at the Canadian Light Source
Brant E. Billinghurst, Tim E. May
69th International Symposium on Molecular Spectroscopy
Acknowledgements
• Tim May (Beamline, CSR)• Sylvestre Twagirayezu (Supersonic Jet)• Dominique Appadoo ( Beamline, CSR)• Bob McKellar (Beamline)• Jack Bergstrom (CSR)• Ward Wurtz (CSR)• Johannes Vogt (CSR)• Paul Dumas (Horizontal Microscope)• All of our great staff at the CLS • All of the our wonderful users
Funding Partners
38 supporting University Partners and growing…
Home
What is a Synchrotron ?
The Canadian Light Source
• Third Generation Storage Ring• Circumference: 171 m • Operating Energy 2.9 GeV • Maximum Current 250 mA• Currently 15 operating Beamlines• 3 Beamlines under construction • Medical Isotope Production
SpectrometerBeamsplitter Spectral RangeMylar 6 µm 30-630 cm-1
Mylar 75 µm 12-35 cm-1
Ge/KBr 400-4800 cm-1
CaF2 1850-20000 cm-1
DetectorsMCT N 600-10000 cm-1
MCT B 450-10000 cm-1
DTGS 100-3000 cm-1
DTGS PE 15-700 cm-1
Si Bolometer 10-370 cm-1
Ge:Cu 300-1850 cm-1
Internal SourcesGlobar 10 – 13000 cm-1
Hg – Lamp 10 – 1000 cm-1
Tungsten Lamp 1000-25000 cm-1
Bruker IFS 125 HRNominal Maximum Resolution: 0.00096 cm-1
Sample Environments
• 30 cm White Cell• Ambient Temperature• Paths up to 12 m
• 2 m White Cell• Cooled (down to -80 °C) • Paths up to 80 m
Sample Environments Under Development: Horizontal Microscope
• Numerical Aperture: ~0.5• F#: ~ 0.9• Working Distance: ~47
mm• Open for Letters of intent
Thanks to Paul Dumas for providing his design for these optics for us to base our design on.
Sample Environments Under Development: Glow Discharge Cell
• Currently being repaired
• Commissioning to be completed
• Please contact Beamline scientist
Sample Environments Under Development: Supersonic Jet
Oven Cell
• Max Temperature 1500 °C• Pathlength 86 cm• Single pass• Flow capable
Why use a Synchrotron
• High Resolution Spectroscopy requires small Apertures.
• Generally this reduces the throughput• Synchrotron light is very bright and
therefore can be focused through a small aperture without reducing throughput.
• Therefore synchrotron radiation allows for us to have both high throughput and high resolution simultaneously
Signal 30-335 cm-1 Region
34.71245 65.56797 96.42348 127.279 158.13452 188.99003 219.84555 250.70106 281.55658 312.41209 343.267610
5
10
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20
25
SR/H
g
Frequency (cm-1)
Signal to Noise 30-335 cm-1 Region
50 100 150 200 250 300 35005
1015202530354045505560657075808590
S/N
Wavenumbers (cm-1)
Signal 335-535 cm-1 Region
335.55373 363.83795 392.12217 420.406389999999 448.69062 476.97484 505.25906 533.543280
2
4
6
8
10
12
14
SR/G
B
Frequency (cm-1)
Performance 335-535 cm-1 Region
350 400 450 5000
20
40
60
80
100
120 S
/N
Wavenumber (cm-1)
Signal 500-1000 cm-1 Region
399.836049999999 482.11743 564.3988 646.68017 728.961549999998 811.24292 893.5243 975.8056699999980
2
4
6
8
10
12
14
SR/G
B
Frequency (cm-1)
S/N 500-1200 cm-1 Region
550 600 650 700 750 800 850 900 950 100010501100115012000
20
40
60 S
/N
Wavenumber (cm-1)
Example #1
550 560 570 580 590 600 610 620
0.0
0.6
1.2
1.8
0.0
0.6
1.2
1.8
Ab
sorb
an
ce
Frequency (cm-1)
S/N
: 11
.1S
R/G
B:
2.6
S/N
: 28
.6
S/N
: 11
.0S
R/G
B:
3.9
S/N
: 42
.7
S/N
: 30
.6S
R/G
B:
3.1
S/N
: 9.
9
S/N
: 55
.3S
R/G
B:
3.4
S/N
: 16
.3
S/N
: 27
.4S
R/G
B:
3.1
S/N
: 9.
0
Example #2
High resolution spectra of pyrrole, collected using the synchrotron (top) compared to the same using the Globar (bottom). Reproduced from Tokaryk D.W. and van Wijngaarden J.A. "Fourier transform spectra of the ν16 , 2ν16 ,and 2ν16- ν16 bands of pyrrole taken with synchrtron radiation" Can. J. Phys. 87 (2009) 443-448. © Canadian Science Publishing or its licensors
How to get beamtime• Purchased Access: ~ $500.00 per hour• Peer-Review: $ 1 + Tax per 8 hour Shift• Call for proposals every 6 months
– Next Call will open: July 29th 2014 – Deadline: Sept 4th 2014
• Some Advice– Talk to the beamline scientist – Explain why Synchrotron Radiation helps your experiment– Ask for more time then you think you need– Don’t get discouraged if you do not receive beamtime with
your first application
“Remote” Access• Experiments can be run without the user
coming to the CLS• Experiment run by Beamline Staff• Data is transferred to the user regularly so that
adjustments can be made• Some notes:
– This is only available for stable molecules– Increase your beamtime request by 10%– You must speak with the Beamline Scientist before
requesting this service
Talks by CLS Far-Infrared Beamline UsersRJ. Large amplitude motions, internal rotation
Thursday, 2014-06-19, 01:30 PMMedical Sciences Building 274
RJ01 Contributed Talk 15 min 01:30 PM - 01:45 PMP434: SPECTRAL ASSIGNMENTS AND ANALYSIS OF THE GROUND STATE OF NITROMETHANE IN HIGH-RESOLUTION FTIR SYNCHROTRON SPECTRASYLVESTRE TWAGIRAYEZU, BRANT E BILLINGHURST, TIM E MAY, EFD, Canadian Light Source Inc., Saskatoon, Saskatchewan, Canada; MAHESH B. DAWADI, DAVID S. PERRY, Department of Chemistry, The University of Akron, Akron, OH, USA;
RJ02 Contributed Talk 10 min 01:47 PM - 01:57 PM
P496: ASSIGNMENT AND ANALYSIS OF THE NO2 IN-PLANE ROCK BAND OF NITROMETHANE RECORDED BY HIGH-RESOLUTION FTIR SYNCHROTRON SPECTROSCOPY
MAHESH B. DAWADI, DAVID S. PERRY, Department of Chemistry, The University of Akron, Akron, OH, USA; SYLVESTRE TWAGIRAYEZU, BRANT E BILLINGHURST, EFD, Canadian Light Source Inc., Saskatoon, Saskatchewan, Canada;
RJ13 Contributed Talk 15 min 04:59 PM - 05:14 PM
P512: SYNCHROTRON RADIATION AND THE FAR-INFRARED AND MID-INFRARED SPECTRA OF NCNCS
MANFRED WINNEWISSER, BRENDA P. WINNEWISSER, FRANK C. DE LUCIA, Department of Physics, The Ohio State University, Columbus, OH, USA; DENNIS TOKARYK, STEPHEN CARY ROSS, Department of Physics, University of New Brunswick, Fredericton, NB, Canada; BRANT E BILLINGHURST, EFD, Canadian Light Source Inc., Saskatoon, Saskatchewan, Canada;
RJ14 Contributed Talk 15 min 05:16 PM - 05:31 PM
P568: SPECTROSCOPY OF NCNCS AT THE CANADIAN LIGHT SOURCE: THE FAR-INFRARED SPECTRUM OF THE ν 7 REGION FROM 60-140 cm−1
DENNIS TOKARYK, STEPHEN CARY ROSS, Department of Physics, University of New Brunswick, Fredericton, NB, Canada; BRENDA P. WINNEWISSER, MANFRED WINNEWISSER, FRANK C. DE LUCIA, Department of Physics, The Ohio State University, Columbus, OH, USA; BRANT E BILLINGHURST, EFD, Canadian Light Source Inc., Saskatoon, Saskatchewan, Canada;
RJ15 Contributed Talk 15 min 05:33 PM - 05:48 PM
P165: FITTING THE HIGH-RESOLUTION SPECTROSCOPIC DATA FOR NCNCS
ZBIGNIEW KISIEL, ON2, Institute of Physics, Polish Academy of Sciences, Warszawa, Poland; BRENDA P. WINNEWISSER, MANFRED WINNEWISSER, FRANK C. DE LUCIA, Department of Physics, The Ohio State University, Columbus, OH, USA; DENNIS TOKARYK, STEPHEN CARY ROSS, Department of Physics, University of New Brunswick, Fredericton, NB, Canada; BRANT E BILLINGHURST, EFD, Canadian Light Source Inc., Saskatoon, Saskatchewan, Canada;
RJ09 Contributed Talk 15 min 03:36 PM - 03:51 PM
P433: ANALYSIS OF THE FAR IR SPECTRUM OF TRIMETHYLENE SULFIDE USING EVOLUTIONARY ALGORITHMS
JENNIFER VAN WIJNGAARDEN, DURELL DESMOND, Department of Chemistry, University of Manitoba, Winnipeg, MB, Canada; W. LEO MEERTS, Institute for Molecules and Materials (IMM), Radboud University Nijmegen, Nijmegen, Netherlands;
CSR advantage over SR
0 10 20 30 40
0
20
40
60
80
100
120
Inte
nsi
ty (
arb
itra
ry u
nits
)
Frequency (cm-1)
0 10 20 30 40-0.05
0.00
0.05
0.10
0.15
0.20
Inte
nsity
(ar
bitr
ary
units
)
Frequency (cm-1)
More Information
• www.lightsource.ca • http://
www.lightsource.ca/beamlines/farir.php• http://
exshare.lightsource.ca/farir/Pages/default.aspx
• Email: [email protected]• Phone: 1-306-657-3554
Coherent Synchrotron RadiationNormal Synchrotron Radiation
Coherent Synchrotron Radiation
Coherent Synchrotron RadiationBunch with N electrons undergoes acceleration
aRandom radiation phases (incoherent)
2a2 Ne2
3c2
(Ne)2
Coherent Radiation Phases
P[coherent]
P[incoherent]= N ≈ 106 - 1010
Power =
Superradiance
Pathlength difference (mm)
1↔162↔17…
Fill Pattern:
60 cm
60 c
m
SuperradianceFill Pattern:
60 cm
~ 0.0167 cm-1
Theory
𝐼 (𝜔 )=|𝑓 (𝜔)|2∙|𝑔 (𝜔)|2
or for a uniform fill pattern
𝐼 (𝜔 )=|𝑓 (𝜔)|2∙[ sin (𝑁 𝑏𝜔𝑇 /2 )𝑠𝑖𝑛 (𝜔𝑇 /2 ) ]
2
Theory vs. Reality
