Titanite luminescence and absorption spectra
This is another improvement on previous attempts to capture the weak and elusive luminescence spectrum of titanite (sphene). This sample was excited by a powerful (500mW) violet 404nm diode laser and the spectrometer protected with a yellow filter cutting at 500nm. The filter exhibits an orange continuum fluorescence which slightly contaminates the luminescence spectum of the crystal spectrum. The maximum contamination is shown by the grey line.
The emission lines are from rare earth elements (REE) and the elements terbium, erbium, europium, samarium and neodymium have been identified.
Titanite luminescence and absorption spectra
This is another improvement on previous attempts to capture the weak and elusive luminescence spectrum of titanite (sphene). This sample was excited by a powerful (500mW) violet 404nm diode laser and the spectrometer protected with a yellow filter cutting at 500nm. The filter exhibits an orange continuum fluorescence which slightly contaminates the luminescence spectum of the crystal spectrum. The maximum contamination is shown by the grey line.
The emission lines are from rare earth elements (REE) and the elements terbium, erbium, europium, samarium and neodymium have been identified.