Quartz CL spectrum, 20 keV e- beam, Torpy et al. 2020

Measurement details

Description CL spectrum of Quartz from the Tista River, Bangladesh
Reference Torpy et al. 2020
Torpy, A., Wilson, N., MacRae, C., Pownceby, M., Biswas, P., Rahman, M., & Zaman, M. (2020). Deciphering the Complex Mineralogy of River Sand Deposits through Clustering and Quantification of Hyperspectral X-Ray Maps. Microscopy and Microanalysis, 26(4), 768-792
https://doi.org/10.1017/S143192762000135X
Date measured 2018-04-14
Material Quartz [ SiO2 ]
Specimen Tista 2020 D4 Shaker [CSIRO], Tista River, Bangladesh
Specimen temperature Ambient
Technique Cathodoluminescence (CL)
Instrument JEOL 8500F
Probe 20 keV electron beam
Beam current 69.64 nA
Probe diameter 2 μm
Detector name OceanOptics QEPRO
Det. technology CCD, Si, Peltier cooled
Acquisition time 6925.5 s
Channel count 1024
Wavelength range 199.467 … 970.586 nm
Intensity range -1.21021 … 74.9324 counts
Integral 19037.7 counts
Related measurement Quartz EDS spectrum, 20 keV e- beam, Torpy et al. 2020 (co-measured)
Lines NBOHC 1.94 eV (100%), Ti4+ 2.77 eV (28%)

Composition

Nominal composition of Quartz [ SiO2 ].
Element Atoms At% Wt%
Si 1 33.3 46.7
O 2 66.7 53.3

Measurement spectrum

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Measurement image

CL spectrum of Quartz from the Tista River, Bangladesh