25-27 November 2015
National Centre for Synchrotron Science
Australia/Melbourne timezone


27 Nov 2015, 14:35
NCSS Seminar Room ()

NCSS Seminar Room

Oral Beamlines, Instrumentation and Techniques Beamline updates


Ruth Plathe (Australian Synchrotron)


Laser photolysis is a new capability that is presently being added to the THz/Far-IR beamline. This technique will allow our users to perform pioneering spectroscopic studies at ultra-high spectral resolution on gaseous molecules of astrophysical interest; it will also enable our users to study photochemical changes in condensed-phase, solid and biological systems after or during laser irradiation.[1][2] The addition of lasers will also allow a host of sunlight driven reactions to be studied, providing a source of radicals such as OH or halogens.[3] We currently have to two lasers: A 40 W cw CO2 laser from Monash University, operating at 10.6 μm, and, a 10 Hz pulsed 480 mJ Nd:Yag Surelite Continuum laser from La Trobe University, operating at 1064, 532, 355 and 266 nm A photolysis gas cell is also available for use. It is suitable for creating steady-state chemical populations with the laser, which can then be probed by the Synchrotron source. We are the only THz beamline with these capabilities. REFERENCES [1] J Nishii et al, “Photochemical reactions in GeO2-SiO2 glasses induced by ultraviolet irradiation: Comparision between Hg lamp and excimer laser” Physical Review B 52.3 (1995): 1661. [2] Kaiser, Ralf I., et al. "Untangling the chemical evolution of Titan's atmosphere and surface–from homogeneous to heterogeneous chemistry." Faraday discussions 147 (2010): 429-478. [3] W.J.R. French, “Hydroxyl Airglow Temperatures above Davis Station, Antarctica”, University of Tasmania, Australian Antarctic Division (2002)

Primary author

Ruth Plathe (Australian Synchrotron)


Dr Dominique Appadoo (The Australian Synchrotron)

Presentation Materials

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