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Primary terms
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1-20 OF 378 RESULTS FOR
photoluminescence
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Journal Article
A photoluminescence study of REE 3+ emissions in radiation-damaged zircon Open Access
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 Available to Purchase
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 Magadiite (Na 2 Si 14 O 29 · x H 2 O) belongs to the family of layered...
Journal Article
Generation history of carbonado inferred from photoluminescence spectra, cathodoluminescence imaging, and carbon-isotopic composition Available to Purchase
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 Available to Purchase
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 Available to Purchase
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 Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 September 2004
European Journal of Mineralogy (2004) 16 (5): 789–799.
Image
Photoluminescence and photoluminescence excitation spectra of bulk (solid l... Available to Purchase
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.]
Image
Photoluminescence (PL) spectra measured in core ( a ) and middle ( b ) zone... Open Access
Published: 01 January 2025
Fig. 8. Photoluminescence (PL) spectra measured in core ( a ) and middle ( b ) zones of sample HI-180 at different excitation wavelengths. Symbol R marks diamond Raman peaks. The spectra are shifted along the vertical axis for better illustration.
Image
Photoluminescence (PL) spectra measured in core ( a ) and rim ( b ) zones o... Open Access
Published: 01 January 2025
Fig. 9. Photoluminescence (PL) spectra measured in core ( a ) and rim ( b ) zones of sample HLS-4 at excitation wavelength 395 nm.
Image
Photoluminescence associated with the web-like dislocation network in a per... Available to Purchase
Published: 01 October 2024
Photoluminescence associated with the web-like dislocation network in a perfectly colourless natural type IIa diamond. 220-nm UV excitation, image width = 0.75 mm.
Image
Parallel polarized Raman spectra of E2335 titanite measured on heating from... Available to Purchase
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.
Image
Typical photoluminescence spectra of diamonds obtained in experiments on th... Open Access
in Experimental Modeling of the Mantle–Slab Interaction in the Metal–Carbonate System, Conditions of Crystallization and Indicator Characteristics of Diamond
> Russian Geology and Geophysics
Published: 01 August 2023
Fig. 12. Typical photoluminescence spectra of diamonds obtained in experiments on the redox (Fe,Ni)–(Mg,Ca)CO 3 interaction: a , b – diamonds crystallized in the carbonate melt at 1400 and 1550 °C, respectively; c , d – diamonds crystallized in a metal melt at 1400 and 1550 °C
Image
Photoluminescence (PL) spectrum for diamond U-331/112, T = 800 K ( A ); a... Available to Purchase
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.
Image
Photoluminescence spectra of fluorcarletonite (curve 1) and carletonite (cu... Available to Purchase
in Crystal-chemical characterisation and spectroscopy of fluorcarletonite and carletonite
> Mineralogical Magazine
Published: 03 March 2023
Figure 7. Photoluminescence spectra of fluorcarletonite (curve 1) and carletonite (curve 2) under 330 nm excitation and excitation spectra of fluorcarletonite (curve 3) and carletonite (curve 4) monitored at 400 nm.
Image
Photoluminescence spectra of turkestanite (1) and steacyite (2) under 405 n... Available to Purchase
Published: 19 January 2023
Fig. 6. Photoluminescence spectra of turkestanite (1) and steacyite (2) under 405 nm excitation. Excitation spectra of uranyl ions (UO 2 ) 2+ in turkestanite (3) and steacyite (4) monitored at 520 nm. All spectra were measured at 90 K.
Image
a) For below-band gap photoluminescence, the energy of the incoming photon... Open Access
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
Image
Photoluminescence spectroscopy reveals that unstable defects are removed by... Open Access
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
Image
Photoluminescence spectra for as-grown ( bottom ) and HPHT annealed ( top )... Open Access
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
Image
Excitation spectrum of photoluminescence monitored at 625 nm (16,000 cm –1 ... Available to Purchase
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.
Image
Photoluminescence spectrum of sapozhnikovite excited by 405 nm (24,690 cm –... Available to Purchase
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.
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