A new approach to spectral recording applied to the study of low-temperature thermoluminescence
| Autor: | T. O. Seim, S. Kolberg, Chr. Holm, S. Prydz |
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| Rok vydání: | 1973 |
| Předmět: |
Photomultiplier
Materials science business.industry General Medicine Octave (electronics) Biochemistry Signal law.invention Optics law Filter (video) Oscillometry Digital storage oscilloscope Tyrosine Thermoluminescent Dosimetry Emission spectrum Physical and Theoretical Chemistry Oscilloscope business Monochromator |
| Zdroj: | Photochemistry and photobiology. 17(1) |
| ISSN: | 0031-8655 |
| Popis: | — A circularly wedged optical interference filter covering about one octave of frequencies, in our particular case corresponding to the wavelength range of 390–740 nm, is used as a broad-band, high-transmission monochromator. The filter wheel is mounted in front of a photomultiplier, and the current signal from the latter is fed to the Y axis of an oscilloscope. Coupling of the filter rotation to the triggering of the oscilloscope rendered the emission spectrum under investigation permanently available as a trace on the screen of the oscilloscope. Single scan photography of the scope trace, using a Polaroid camera, is one instance where the method proves to be well suited to the study of rapidly varying sources or of systems showing a rapidly changing spectral transmittance. Applications of the instrument's particular combination of qualities are demonstrated, using tyrosine, which is thermoluminescent upon low temperature irradiation with X rays, as a test system. |
| Databáze: | OpenAIRE |
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