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Journal Article
A photoluminescence study of REE 3+ emissions in radiation-damaged zircon
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 May 2015
American Mineralogist (2015) 100 (5-6): 1123–1133.
...Christoph Lenz; Lutz Nasdala Abstract A series of natural zircon samples (with U concentrations of 140–2600 ppm and ranging from well crystalline to severely radiation damaged) were investigated by means of REE 3+ photoluminescence spectroscopy. We found systematic changes in REE 3+ emissions...
Journal Article
Structure and photoluminescence of composites based on CdS enclosed in magadiite
Journal: Clays and Clay Minerals
Publisher: Clay Minerals Society
Published: 01 February 2013
Clays and Clay Minerals (2013) 61 (1): 26–33.
... composite, along with the modification of the optical properties of CdS by the host magadiite. 17 09 2012 12 2012 © 2013 Clay Mineral Society 2013 CdS Nanoparticles Composites Magadiite Photoluminescence * E-mail address of corresponding author: yfchen@ncu.edu.cn...
Journal Article
Generation history of carbonado inferred from photoluminescence spectra, cathodoluminescence imaging, and carbon-isotopic composition
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 January 2007
American Mineralogist (2007) 92 (1): 217–224.
...Hiroyuki Kagi; Shuichi Sato; Tasuku Akagi; Hisao Kanda Abstract Carbonado diamonds from the Central African Republic were investigated using spectroscopic observations and C-isotopic analysis. Based on photoluminescence (PL) spectra, carbonado samples were classified into two groups: Group-A, which...
Journal Article
Fluorescence (photoluminescence) of carbonate rocks; instrumental and analytical sources of observational error
Journal: Journal of Sedimentary Research
Publisher: SEPM Society for Sedimentary Geology
Published: 01 July 1987
Journal of Sedimentary Research (1987) 57 (4): 780–782.
Journal Article
Activation of photoluminescence in artificial calcite by stannous ion
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 June 1955
American Mineralogist (1955) 40 (5-6): 540–542.
Journal Article
Opals from Slovakia (“Hungarian” opals) : a re-assessment of the conditions of formation
Journal: European Journal of Mineralogy
Published: 01 September 2004
European Journal of Mineralogy (2004) 16 (5): 789–799.
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Photoluminescence and photoluminescence excitation spectra of bulk (solid l...
Published: 01 January 2006
Figure 30. Photoluminescence and photoluminescence excitation spectra of bulk (solid lines) and nanocrystalline (dashed lines) ZnS:Mn. [Used with permission of American Physical Society, from Bhargava et al. (1994) , Physical Review Letters, Vol. 72, Fig. 1, p. 4162.]
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a) For below-band gap photoluminescence, the energy of the incoming photon...
in Diamond Spectroscopy, Defect Centers, Color, and Treatments
> Reviews in Mineralogy and Geochemistry
Published: 01 July 2022
Figure 16. a) For below-band gap photoluminescence, the energy of the incoming photon (hn i ) is enough to excite an electron from a defect’s ground state (GS) to its excited state (ES): the defect subsequently emits a lower-energy photon (hn e ). b) For cathodoluminescence, a high-energy
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Photoluminescence spectroscopy reveals that unstable defects are removed by...
in Diamond Spectroscopy, Defect Centers, Color, and Treatments
> Reviews in Mineralogy and Geochemistry
Published: 01 July 2022
Figure 40. Photoluminescence spectroscopy reveals that unstable defects are removed by HPHT treatment of Type IIa brown diamonds to decolorize them. In addition, the NV – /NV 0 ratio increases to >1 in treated diamonds (as measured with PL using a 514 nm laser). The H2 defect is rare
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Photoluminescence spectra for as-grown ( bottom ) and HPHT annealed ( top )...
Published: 01 July 2022
Figure 42. Photoluminescence spectra for as-grown ( bottom ) and HPHT annealed ( top ) CVD diamonds collected using 514 nm laser excitation at 77 K. Nitrogen-vacancy and silicon-vacancy centers are observed for both. SiV – is often detected for CVD diamonds, yet extremely rare for natural
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Excitation spectrum of photoluminescence monitored at 625 nm (16,000 cm –1 ...
in Sapozhnikovite, Na 8 (Al 6 Si 6 O 24 )(HS) 2 , a new sodalite-group mineral from the Lovozero alkaline massif, Kola Peninsula
> Mineralogical Magazine
Published: 10 December 2021
Fig. 9. Excitation spectrum of photoluminescence monitored at 625 nm (16,000 cm –1 ) at 77 K.
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Photoluminescence spectrum of sapozhnikovite excited by 405 nm (24,690 cm –...
in Sapozhnikovite, Na 8 (Al 6 Si 6 O 24 )(HS) 2 , a new sodalite-group mineral from the Lovozero alkaline massif, Kola Peninsula
> Mineralogical Magazine
Published: 10 December 2021
Fig. 8. Photoluminescence spectrum of sapozhnikovite excited by 405 nm (24,690 cm –1 ) radiation at 77 K.
Image
An absorption measurement ( left ) measures the total absorption of the sam...
in Diamond Spectroscopy, Defect Centers, Color, and Treatments
> Reviews in Mineralogy and Geochemistry
Published: 01 July 2022
, the absorbance at 3.0 eV is a result of absorption by both X & Y defects, while at 2.7 eV only defect Y contributes to the spectrum. Using sub-band gap excitation, photoluminescence can be excited from multiple defect centers selectively. A sub-band gap laser incident on a crystal containing multiple defects
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Parallel polarized Raman spectra of E2335 titanite measured on heating from...
in TEMPERATURE-INDUCED P 2 1 / c TO C 2/ c PHASE TRANSITION IN PARTIALLY AMORPHOUS (METAMICT) TITANITE REVEALED BY RAMAN SPECTROSCOPY
> The Canadian Mineralogist
Published: 01 February 2014
Fig. 3 Parallel polarized Raman spectra of E2335 titanite measured on heating from R T to 800 K. The signals near 1045, 1090, and 1180 cm −1 are photoluminescence peaks. The band near 880 cm −1 results from overlapping Raman and photoluminescence signals.
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Photoluminescence (PL) spectrum for diamond U-331/112, T = 800 K ( A ); a...
in A unique diamondiferous peridotite xenolith from the Udachnaya kimberlite pipe, Yakutia: role of subduction in diamond formation
> Russian Geology and Geophysics
Published: 01 January 2015
Fig. 14. Photoluminescence (PL) spectrum for diamond U-331/112, T = 800 K ( A ); a fragment of the PL spectrum with details of fine structure ( B ). 1 , 2 , yellow ( 1 ) and green ( 2 ) photoluminescence for the samples U-331/112 and U-331/113, respectively; 3 , differential spectrum.
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Photoluminescence (PL) spectra of microdiamonds and high-pressure–high-temp...
Published: 20 March 2017
Figure 6. Photoluminescence (PL) spectra of microdiamonds and high-pressure–high-temperature (HPHT) synthetic diamond grit. (A) Excited with 514 nm laser at liquid nitrogen temperature (LNT), showing nitrogen-vacancy (NV) centers and phonon sidebands. (B) PL spectra excited by 830 nm laser at LNT
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A typical photoluminescence (PL) spectrum of small diamond crystals isolate...
in Peculiarities of nitrogen impurity aggregation in diamonds from the Sytykanskaya pipe, Yakutia
> European Journal of Mineralogy
Published: 01 January 2015
Fig. 1 A typical photoluminescence (PL) spectrum of small diamond crystals isolated from high-temperature olivine showing the presence of a strong N3 (415 nm) system as a main feature; the 490.7 nm, H3 (503.2 nm) and H4 (496.2 nm) centers occurred in some stones of this suite, but at much lower
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Photoluminescence spectrum typical of diamonds sized 1.5–2.0 mm: the 490.7 ...
in Peculiarities of nitrogen impurity aggregation in diamonds from the Sytykanskaya pipe, Yakutia
> European Journal of Mineralogy
Published: 01 January 2015
Fig. 4 Photoluminescence spectrum typical of diamonds sized 1.5–2.0 mm: the 490.7 nm system is dominant indicating the presence of plastic deformation in the stones.
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Spatial distribution of photoluminescence in natural diamonds with cloudy m...
in Multiple growth events in diamonds with cloudy microinclusions from the Mir kimberlite pipe: evidence from the systematics of optically active defects
> Russian Geology and Geophysics
Published: 01 January 2015
Fig. 8. Spatial distribution of photoluminescence in natural diamonds with cloudy microinclusions (samples MS-1, MS-3, and MS-8). The images were obtained by excitation using laser with wavelengths of 405 and 532 nm. a – f , See explanations in the text.
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Characteristic photoluminescence spectra for different genetic zones of the...
in Multiple growth events in diamonds with cloudy microinclusions from the Mir kimberlite pipe: evidence from the systematics of optically active defects
> Russian Geology and Geophysics
Published: 01 January 2015
Characteristic photoluminescence spectra for different genetic zones of the studied diamonds: a , Cubic cores of diamonds with a transition zone; b , cubic cores of diamonds with a sharp cuboid–octahedron transition; c , cube–octahedron transition zone; d , rim of diamonds with a transition