Abstract
We call monograph a spectrometer which can work as well as a spectrograph or as a monochromator. The system has been designed to allow time resolved spectroscopy on hot laser excited plasmas by using a slit camera and either a single or a multichannel detector. The mounting derives from a plane grating monochromator (PGM) configuration, which associates a toroidal mirror and a plane holographic grating with non uniform groove distribution to allow optimum aberration correction. The mirror and the grating work at nearly the same deviation angle a compensated manner which gives an in line configuration.
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