Plagioclase (var. lunar) CL spectrum, 15 keV e- beam, CSIRO/WUStL Apollo 12 (2019)
Measurement details
Description | CL spectrum of Plagioclase (var. lunar), from Apollo 12 mission |
Reference | Otherwise unpublished work by CSIRO & WUStL, Apollo 12, AMAS XV. Feb 2019 https://research.csiro.au/microbeam-lab/ |
Date measured | 2019-02-21 |
Material | Plagioclase (var. lunar) [ (Na, Ca)[(Si, Al)AlSi2]O8 ] |
Specimen | Apollo 12032-366-19x [NASA], Bench Crater, Ocean of Storms, 3.01239°S 23.42157°W, The Moon |
Specimen URL | https://curator.jsc.nasa.gov/lunar/lsc/12032.pdf |
Technique | Cathodoluminescence (CL) |
Instrument | JEOL 8500F |
Probe | 15 keV electron beam |
Beam current | 39.68 nA |
Probe diameter | 1 μm |
Acquisition time | 5550.07 s |
Channel count | 1024 |
Wavelength range | 199.467 … 970.586 nm |
Intensity range | -25813.4 … 2.2513×106 counts |
Integral | 7.6368×108 counts |
Lines | Unspecified 2.61 eV (100%), 3.57 eV (22.4%) |
Composition
Element | Atoms |
---|---|
Na | 0-1 |
Ca | 0-1 |
Al | 1-2 |
Si | 2-3 |
O | 8 |
Measurement spectrum
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