Titanite (var. Tm doped) PL/Laser spectrum, 473 nm laser beam, Lenz <i>et al.</i> 2015

Titanite (var. Tm doped) PL/Laser spectrum, 473 nm laser beam, Lenz et al. 2015

Description	PL/Laser spectrum of Titanite (var. Tm doped)
Reference	Lenz et al. 2015 Lenz C., Nasdala L., Talla D., Hauzenberger C., Seitz R. & Kolitsch U. (2015). Laser-induced REE3+ photoluminescence of selected accessory minerals — An “advantageous artefact” in Raman spectroscopy. Chemical Geology, 415, 1-16. https://doi.org/10.1016/j.chemgeo.2015.09.001 https://www.sciencedirect.com/science/article/pii/S000925411530022X
Material	Titanite (var. Tm doped) [ CaTiSiO₅:Tm ] Titanite on amphibole, from Wannenköpfe, Ochtendung, Eifel region, Germany. Image width: 2mm © 2010 Fred Kruijen (via Wikimedia Commons), CC-BY-SA-3.0
Technique	Laser photoluminescence (PL)
Instrument	Horiba LabRam HR Evolution
Probe	473 nm laser beam
Det. technology	CCD, Si, Peltier cooled
Grating spacing	600 lines/mm
Numerical aperture	0.9
Channel count	9119
Energy range	1.31218 … 2.61028 eV
Intensity range	100 (normalised intensity)
Lines	Tm³⁺ 1.53295 eV (9.5%), 1.55466 eV (47.3%), 1.57958 eV (21.7%), 1.60174 eV (19.1%), 1.6136 eV (58.1%), 1.63513 eV (14.3%), 1.85615 eV (35.3%), 1.88131 eV (38.1%), 1.89083 eV (39.2%), 1.90224 eV (95.9%), 1.90846 eV (100%), 1.92207 eV (5.9%), 1.92784 eV (10.7%), 1.9401 eV (9.4%), 1.9608 eV (5.9%), 2.50859 eV (8.5%), 2.51413 eV (11.2%), 2.5371 eV (38.3%), 2.54673 eV (100%), 2.55518 eV (44.1%), 2.56397 eV (38.6%), 2.56898 eV (12.1%), 2.58299 eV (15.2%), 2.59028 eV (60.5%), 2.59935 eV (10.3%), 2.60152 eV (7.3%), 2.60389 eV (13.1%), 2.60771 eV (16.3%)

Nominal composition of Titanite (var.Tm doped) [ CaTiSiO₅:Tm ].
Element	Atoms	At%	Wt%
Ca	1	12.5	20.4
Ti	1	12.5	24.4
Si	1	12.5	14.3
O	5	62.5	40.8