| Specifications | OSD Application Note 102 - Triboluminescence.PDF Jobin Yvon |
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| Specifications | OSD Application Note 102 - Triboluminescence.PDF Jobin Yvon |
| Business section |
| Specifications | OSD Application Note 102 - Triboluminescence.PDF Jobin Yvon |
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| Content | SpecialistsSpecialistsSpecialists in Spectroscopyin Spectroscopyin Spectroscopy Optical Spectroscopy DivisionOptical Spectroscopy DivisionOptical Spectroscopy Division F L U O R E S C E N C E • F O R E N S I C S • O P T I C A L S P E C T R O S C O P Y • R A M A N • E M I S S I O N • O E M & G R A T I N G S • T H I N F I L M SHORIBA GROUPwww.jyhoriba.com APPLICATION NOTE # 102 TRIBOLUMINESCENCE Introduction: Triboluminescence is emission of light triggered by mechanical energy from friction or, more commonly, fracture. The exact reasons why particular materials show triboluminescence can vary for different materials, but it is probable that crystal structure and impurities are primary determinants of whether or not a material is triboluminescent. The most commonly known triboluminescent materials are wintergreen candies and quartz. Other minerals, such as calcite and mica, are known to exhibit triboluminescence when struck or rubbed. Using triboluminescent compounds that glow when struck, researchers are trying to make impact damage in composites easier to detect. Experimental Setup: CP140 equipped with a back-illuminated CCD detector Features Benefits High Throughput Improves Signal-to-Noise Ratio Back Illuminated Detector Relatively flat response in UV-Vis regions High Quantum Efficiency Detects Extremely Weak Signals Low Read & Dark Noise Long Signal Integration Times Experiment: Samples were placed into a glass test tube and ground with a glass rod at the beginning of acquisition to create triboluminescence. The test tube with the sample was placed in front of the spectrograph with a 2 nm bandpass. The system was based on a CP 140- 104 fixed Imaging Spectrograph equipped with a high-efficiency concave holographic grating, optimized for 200 – 850 nm. This spectrograph focuses diffracted light onto the focal plane of an array detector. A LN2-cooled Spectrum One CCD detector with a back-illuminated 1024 x 256 array was used with a high sensitivity, low noise 16-bit acquisition controller. Liquid nitrogen cooling (140 K) effectively eliminates dark noise contributions and allows integration on time scales for several hours. Integration of these components together as a complete spectroscopy system to maximum signal throughput and minimize noise effects results in a fully-optimized system for detecting weak triboluminescent signals. |
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| Following Datasheets | 102_15 (1 pages) 102_16 (1 pages) 103-invertor (4 pages) 103013_02-07_10_46099 (4 pages) 103035_02-11_08_35861 (12 pages) 103035_02-11_08_en_35862 (12 pages) 1032_5 (123 pages) 103325_03-08_11_50859 (8 pages) 103326_03-08_11_50860 (8 pages) 103327_02-05_09_50861 (20 pages) |
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