Luminescence excitation spectra of Mn2+ in synthetic forsterite

Green, G. R.; Walker, G.

doi:10.1007/bf00310339

Cited by 21 publications

(11 citation statements)

References 12 publications

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“…No evidence was found for a zero-phonon line down to temperatures of 6 K. Green and Walker (1985) did observe a zero-phonon line for Mn 2 + emission in forsterite at a temperature of 5 K.…”

Section: Absorption and Emission Spectramentioning

confidence: 54%

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Polarized luminescence spectra of kunzite

Chandrasekhar

White

1992

Phys Chem Minerals

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Abstract. Kunzite, the pink, manganese-bearing variety of spodumene, is strongly luminescent under UV or electron beam excitation. Laser excitation of an oriented kunzite single crystal has been used to determine the polarization dependence of the luminescence. The emission spectrum, assigned to an Mn 2 § center, can be fitted by two Gaussian bands with maxima at 16568 and 15 679 cm-1. Analysis of the temperature dependence of emission intensity and band width give estimates of the frequency of the phonons assisting the luminescence transitions. These appear to be bond stretching modes of the octahedral site. Analysis of the polarization dependence of emission intensity allows determination of the orientation of the emission dipole. Comparison of the polarization dependence of excitation and emission radiation shows that coupling between absorption dipole and emission dipole is incoherent.

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“…No evidence was found for a zero-phonon line down to temperatures of 6 K. Green and Walker (1985) did observe a zero-phonon line for Mn 2 + emission in forsterite at a temperature of 5 K.…”

Section: Absorption and Emission Spectramentioning

confidence: 54%

“…Measurements of polarized luminescence are more sparse. Polarized emission has been observed in willemite White 1970, 1972) and a detailed study has been made on the polarized luminescence of Mn 2+ in forsterite (Green and Walker 1985).…”

Section: Introductionmentioning

confidence: 98%

Polarized luminescence spectra of kunzite

Chandrasekhar

White

1992

Phys Chem Minerals

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“…It is, therefore, valuable to investigate optical properties of forsterite from the viewpoint of scientific fundamentals and industrial applications. Nevertheless, most of the studies have concentrated in optical properties of activator ions in it [1][2][3]. There are few reports on optical properties of forsterite itself, except for our optical constant data in the vacuum ultraviolet (VUV) region [4].…”

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confidence: 98%

Photoluminescence of forsterite single crystals excited by vacuum ultraviolet radiation

Kitaura¹,

Ohnishi²

2008

Phys. Status Solidi (c)

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Emission and excitation spectra of forsterite have been measured using synchrotron radiation. The 2.55 eV and 2.85 eV bands dominates the emission spectra under excitation above and below the fundamental absorption edge at 7.6 eV, respectively. From the feature of excitation spectra, the 2.55 eV band is assigned to an intrinsic origin in forsterite. That is, this band most likely originates from a self‐trapped exciton (STE) state. The 2.85 eV band is ascribed to an extrinsic origin such as imperfections. The excitation spectrum for the 2.55 eV band exhibits the threshold for the electron‐hole (e ‐h) multiplication at around 21 eV, which is caused by inelastic scattering of hot photoelectrons with valence electrons. The structure of STEs and e ‐h relaxation processes induced by vacuum ultraviolet (VUV) photons are discussed on the basis of a comparison of experiment and theoretical calculation. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…(Moncorgé et al 1991). The Mn 2+ ions prefer the M2 site and luminesce from the lowest split component of the 4T1(G) above the ground state (Green and Walker 1985). A blue peak (420 nm) is of uncertain origin but readily removed by mechanical deformation.…”

Section: Comparison Of Present Data With Terrestrial Forsteritesmentioning

confidence: 99%

The fine‐grained matrix of the Semarkona LL3.0 ordinary chondrite: An induced thermoluminescence study

Craig

Sears

2009

Meteorit & Planetary Scien

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Abstract-To investigate the nature, origin, and history of the fine-grained matrix in Semarkona and develop techniques suitable for small samples, we have measured the induced thermoluminescence properties of six matrix samples 10 µm to 400 µm in size. The samples had TL sensitivities comparable with 4 mg of bulk samples of type 3.2-3.4 ordinary chondrites, which is very high relative to bulk Semarkona. The other induced TL properties of these samples, TL peak temperatures, and TL peak widths distinguish them from other ordinary chondrite samples where the TL is caused by feldspar. Cathodoluminescence images and other data suggest that the cause of the luminescence in the Semarkona fine-grained matrix is forsterite. In some respects the matrix TL data resemble that of Semarkona chondrules, in which the phosphor is forsterite and terrestrial forsterites from a variety of igneous and metamorphic environments. However, differences in the TL peak temperature versus TL peak width relationship between the matrix samples and the other forsterites suggest a fundamentally different formation mechanism. We also note that forsterite appears to be a major component in many primitive materials, such as nebulae, cometary dust, and Stardust particles.

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Luminescence excitation spectra of Mn2+ in synthetic forsterite

Cited by 21 publications

References 12 publications

Polarized luminescence spectra of kunzite

Polarized luminescence spectra of kunzite

Photoluminescence of forsterite single crystals excited by vacuum ultraviolet radiation

The fine‐grained matrix of the Semarkona LL3.0 ordinary chondrite: An induced thermoluminescence study

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