UV Spectrometer for Australian Researchers Boron Nanotube (BNNT) Behavior & Applications
Vacuum Ultraviolet Spectral Imaging Simultaneous Spatial, Spectral Data
The Institute of Technology, Research and Innovation, Deakin University, Australia ordered a McPherson vacuum ultraviolet (VUV) spectrometer system. The system works from 120 to 900nm overall. Excitation is tunable from 120 to 380nm. It measures transmission, reflection and VUV excited luminescence. The sample chamber allows use of laser or x-ray excitation sources and a cryogenic sample mount. The Australian research group, led by Prof. Ying Chen, uses the system to characterize optical properties of samples like Boron Nitride nanotubes (BNNTs.) The deep UV emission at 225nm suggests exploiting BNNTs as sources for optic and optoelectronic devices.
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Vacuum Spectrometers with 670mm focal length and more are now available. They are ideal for transient or fast plasmas, astrophysics, material science (Raman, luminescence) and laser-matter interactions. These McPherson vacuum spectrometers feature stainless steel housing, hand polished optics, multiple ports, and precision wavelength drives. High reflectivity coatings provide up to 78% reflective efficiency at deep UV wavelengths as short as 120nm. Other coatings are available to peak performance in mid wave and long wave infrared applications. Use them with commercial 2D CCD and CMOS sensors or Silicon diode or photomultipliers. Popular CCD sensors allow users to collect more information in less time. They record sub-nanometer spectra and discrete spatial information simultaneously. These instruments are ideal for Doppler and Stark diagnostic spectroscopy. McPherson’s vacuum spectrometers are available in focal lengths up to two meters. Many vacuum accessories are available; calibration light sources, detectors, sample chambers and more.
High Resolution Spectrometers
Measure spectral emission, luminescence, Raman (strained Silicon), and high temperature plasmas better than 0.01nm fwhm. One and two meter high resolution spectrometers are available with CCD or CMOS detectors for imaging applications. McPherson spectrometers have adjustable slits, multiple ports, and precision drives for great reproducibility. Many larger, high angle Echelle gratings fit right in. And the 50mm wide focal plane is accessible. Oversize McPherson Snap-In™ gratings are easy to change, provide 40% more diffractive ruled area and hand polished mirrors provide excellent light throughput. At LMSAL, solar physicist, Dr. Thomas Berger, uses the high resolution McPherson spectrometer system with a scientific CCD and heliostat in order to measure, characterize, and document the spectral characteristics of narrow-band Lyot filters designed and built at Lockheed. LMSAL is a department of the Lockheed Martin Advanced Technology Center (ATC) in Palo Alto, California, and manned by a group of scientists and engineers who design, build, and operate solar and astrophysical observing instruments.
High vacuum XUV and EUV spectrometer Model 248/310 works from 1nm and up.; CCD, MCP or PMT equipped. Use with 629 or x-ray source to deliver XUV.
Model 2035 Double and related systems for Raman and Radiometry built for your goals. Accessories include reflective collimators, sample goniometer and more.
f/4.7 0.67m fl. Model 207 for better spectral resolution AND light gathering power, ideal for low light applications like Raman and luminescence. Vacuum version available
Vacuum Ultraviolet Excited Luminescence
Efficient, easy to use Model 234/302 VUV spectrometer for 30nm and up, CCDs and Platinum EUV optics available, works great in diagnostic and analytical systems.
Open microchannel plate intensifiers for XUV & VUV detection. Stand alone or for spectrometers. We’ll help lens or fiber couple to your detector or ours.
Windowless light source Model 629 for spectral lines at Helium II and above; use with vacuum spectrometer and off-axis parabolic (OAP) collimator to deliver VUV.
McPherson, 7A Stuart Road, Chelmsford MA USA | 1-978-256-4512 | MCP@McPhersonInc.com | McPhersonInc.com
To develop vacuum ultraviolet (VUV) excitable phosphors, the Institute of Low Temperature and Structure, Polish Academy of Science contracted McPherson to .8 build a characterization system for the 120 to 1800nm range. The research group, led by Prof. Przemysaw Deren, uses the McPherson system .6 to study ‘quantum cutting’ phenomenon and to measure and characterize vacuum UV luminescence properties of phosphors and crystals. Their research is helping .4 create more efficient methods of commercial lighting. Today’s compact fluorescent lamps (CFL) often use Mercury. Environmentally benign noble gas discharges excite .2 the new phosphors. Such phosphors solve two important problems; ecological and efficiency. The VUV excited phosphors are twice as energy efficient as today’s CFL’s. 0 400 450 500 550 600 650 The McPherson instrument provides tunable, monochromatic VUV sample excitation and emission measurements. It works from the vacuum ultraviolet to the near infrared. And at a significantly reduced price from working on synchrotron storage rings.
McPherson, 7A Stuart Road, Chelmsford MA USA | 1-978-256-4512 | MCP@McPhersonInc.com | McPhersonInc.com
Be Green / Blast from the Past
We recently saw the paper “Vacuum ultraviolet impurity spectroscopy on the Alcator C-Mod tokamak” Rev. Sci. Instrum. 81, 10D736 (2010). Some of the experimental data was collected with help from a McPherson Model 247 2.2m grazing incidence spectrometer. According to our records, this instrument was in use and producing data in 1978! We are proud to build durable instruments that withstand the test of time and maintain the performance necessary for scientific results. How great is it not to abandon your equipment due to computer fads, electronic obsolescence, and to amortize cost over a 30+ year lifetime. McPherson delivers high-performance, environmentally sound, high-value tools for your laboratory.
Wavelength scan of Mercury green line 546.07nm, shows isotope structure and picometer (milli-Angstrom) fwhm spectral resolution.
7A Stuart Rd, Chelmsford MA 01824 USA
www.McPhersonInc.com 1nm to 310nm range High efficiency grazing incidence Flat field, Rowland circle and XCT models High-energy EUV & XUV tunable sources
30nm to 550nm range Efficient VUV spectrometers & systems Optional twin entrance / exit ports CCD & MCP intensifier adapters
Tell us your story, send some photos. We love to hear about current use of legacy McPherson spectrometers. Tell us a good story and we’ll send you a McPherson shirt in thanks.
185nm to 78um range Focal lengths from 0.2 to 4-meters Snap-In interchangeable gratings Spectrometer software (LabViewTM)
Rev. Sci. Instrum. 81, 10D736 (2010); doi:10.1063/1.3494380 (4 pages), Vacuum ultraviolet impurity spectroscopy on the Alcator C-Mod tokamak M. L. Reinke1, P. Beiersdorfer2, N. T. Howard1, E. W. Magee2, Y. Podpaly1, J. E. Rice1, and J. L. Terry1 1 Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA 2 Physics Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
Excellent Spectral Resolution
www.McPhersonInc.com/2012-News.pdf online now Consult McPherson! We’re happy to discuss intended methods and provide instrument features to suit your purpose. We individually address your spectral analysis goals as well as sample handling and accommodation. Your samples need specific, reproducible, and accurate positioning. We deliver friendly and reliable tools for spectral analysis with liquid or gas cells, odd shape cuvettes, components, materials and more.
The transmittance, reflectance, angular light scatter and fluorescence/phosphorescence measuring system used on our VUVAS 1000 and 2000 spectrophotometers is available with most McPherson spectrometers and over vast spectral regions, from soft x-ray to UV-Vis and Infrared.
McPherson Echelle, double- and triple-monos for resolution and low stray light. From 0.5 to 4-meter focal lengths. Ideal for Imaging & High Resolution Spectroscopy
High Energy Spectroscopy Building blocks for soft x-ray, EUV and VUV from a trusted source
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APS March Meeting 2012
Feb 27 - March 2 Boston, Massachusetts
Visit McPherson at booth#118
Mercury lines at 313.15nm and 313.18nm demonstrate 2-picometer fwhm line width!
100 Simultaneous Images 0.01nm fwhm at 529nm
High energy emission lines from a variety of anode materials, as used in Model 642, from left to right: Cu-L, Al-L, Ti-K and Fe-K
Left: 0.2m focal length, f/4.5 vacuum spectrometer Model 234/302 works from 30 nanometers up to the Visible and Near Infrared region. Great for use with with scintillated PMTs or vacuum diodes and CCDs. Right: Rowland circle grazing incidence spectrometer with hot filament, solidanode soft x-ray source. Select up to 6 different anodes while under vacuum for calibration or reflectometry.
Many accessories for VUV spectroscopy are available Build your ideal analytical or diagnostic system today
Spectral Imaging