A very large aperture spectrometer for low light optical emission spectroscopy

23rd International Conference on Spectral Line Shapes

Baude, R.^1 ; Escarguel, A.^1 ; David, P.^1

Aix Marseille University, CNRS, PIIM UMR 7345, Marseille, France^1

关键词: Astronomical spectroscopy;    Czerny-Turner;    Geometrical modeling;    Large aperture;    Low light;    Low temperature plasmas;    Significant deteriorations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/810/1/012046/pdf
DOI  :  10.1088/1742-6596/810/1/012046

来源: IOP

【 摘 要 】

In low light experiments such as low temperature plasma or astronomical spectroscopy usual tools such as Czerny Turner based spectrometer (CTS) may have a limited efficiency due to the fact that a large entrance slit implies a large broadening of the instruments profile. To overcome the brightness issue of spectrometer, the so-called Bowen Chamber spectrometer (BCS) was designed to accept a large aperture slit, without significant deterioration of the spectrum. The BSC characteristics are presented and a close comparison with a CTS spectrometer is detailed. A simple geometrical model have been developed to still improve the BSC specifications.