Heavy-ion irradiation on crystallographically oriented cordierite and the conversion of molecular CO2 to CO: a Raman spectroscopic study

Weikusat, Christian; Miletich, Ronald; Glasmacher, Ulrich A.; Trautmann, C.; Neumann, R.

doi:10.1007/s00269-009-0343-x

Cited by 15 publications

(6 citation statements)

References 22 publications

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“…Nasdala et al, 2001b; and references therein). The Raman technique has however also been used already to study, rather qualitatively, radiation damage in several other minerals such as monazite (Seydoux-Guillaume et al, 2002;Nasdala et al, 2010;Ruschel et al, 2012), titanite (Beirau et al, 2010), fergusonite (Tomašić et al, 2006), and cordierite (Nasdala et al, 2006;Weikusat et al, 2010). In general, structural radiation damage results in gradual FWHM increases, changes of spectral positions mostly toward lower Raman shifts, and intensity losses of the "crystalline" Raman bands, which eventually disappear at the highest damage stage.…”

Section: Naturally Radio-coloured Diamondmentioning

confidence: 99%

Radio-colouration of diamond: a spectroscopic study

Nasdala

Grambole

Wildner

et al. 2012

Contrib Mineral Petrol

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Section: Naturally Radio-coloured Diamondmentioning

confidence: 99%

Radio-colouration of diamond: a spectroscopic study

Nasdala

Grambole

Wildner

et al. 2012

Contrib Mineral Petrol

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“…Also, the corpuscular "bombardment" of the target may result in segregation and phase or molecular decomposition. Examples include the irradiation-induced transformation of γ-Fe 2 SiO 4 into Fe 3 O 4 and SiO 2 (Wang et al 1999), decomposition of HfSiO 4 and ZrSiO 4 into component oxides (Meldrum et al 1999), or conversion of CO 2 molecules in cordierite into CO and O 2 (Nasdala et al 2006a;Krickl et al 2009b;Weikusat et al 2010). In the study of radiation-damage effects, one is obliged to survey cautiously as to which degree such irradiation-induced changes may have affected the radiation-damaged mineral under investigation.…”

Section: Introduction: Radiation Damage In Mineralsmentioning

confidence: 99%

Review of effects of radiation damage on the luminescence emission of minerals, and the example of He-irradiated CePO4

Nasdala

Grambole²,

Ruschel

2013

Miner Petrol

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The accumulation of structural damage that is created in minerals upon corpuscular irradiation, has two apparently contrarious effects on their luminescence behaviour. First, irradiation may cause the generation of luminescent defect centres, which typically results in broad-band emissions. Such defect emissions are characteristic of low levels of radiation damage. Second, radiation damage depletes in general the luminescence of minerals, which is associated with broadenings and intensity losses of individual emission lines. Minerals that have suffered elevated levels of irradiation hence tend to be virtually non-luminescent. This review paper aims at giving an overview of the possible correlations of radiation damage and emission characteristics of minerals. After a brief, introductory summary of the damage-accumulation process and its causal corpuscular radiation, an array of examples is presented for how internal and/or external irradiation may change appreciably the emission of rock-forming and accessory minerals. As a detailed example for the complexity of changes of emissions upon damage accumulation, preliminary results of a case study of the photoluminescence (PL) of synthetic CePO 4 irradiated with 8.8 MeV He ions are presented. Irradiation-induced spectral changes include (i) the initial creation, and subsequent depletion, of a broad-band, defect-related PL emission of orange colour, and (ii) gradual broadenings and intensity losses of PL lines related to electronic transitions of rare-earth elements, eventually leading to gradual loss of their splitting into multiple Stark levels (shown for the 4 F 3/2 → 4 I 9/2 transition of Nd 3+).

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“…The irradiation provides several possibilities for creating extremely high-energy densities inside various material targets and matrices. SHI irradiation experiments have helped in discovering materials capable of inactivating radioactive wastes and prediction of nuclear tracks forming inside actinide-bearing minerals such as apatite and zircon (8)(9)(10)(11)(12)(13). In addition to this, SHIs have been extensively used in lithographic techniques, especially in designing the nanostructures on the substrate materials (14)(15)(16)(17)(18).…”

Section: Introductionmentioning

confidence: 98%

Effects of swift heavy ion-irradiation on mica- and coal-based rocks of Lower Himalayas in Sikkim, India

Tiwari

Saikiran

Tripathi

et al. 2013

Radiation Effects and Defects in Solids

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Naturally occurring mica schist and coal sedimentary sequence in Sikkimese Himalaya were collected and investigated by two micro-techniques: scanning electron microscopy/energy dispersive spectrometry and Raman spectroscopy. They were applied to identify the constituents and the structure of the minerals before and after swift heavy ion irradiation. Vibrational data and the constituents of abundantly found mica schist and coal-based rock were acquired at room temperature and were compared with those reported for their analogues in the previous reports.

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Heavy-ion irradiation on crystallographically oriented cordierite and the conversion of molecular CO2 to CO: a Raman spectroscopic study

Cited by 15 publications

References 22 publications

Radio-colouration of diamond: a spectroscopic study

Radio-colouration of diamond: a spectroscopic study

Review of effects of radiation damage on the luminescence emission of minerals, and the example of He-irradiated CePO4

Effects of swift heavy ion-irradiation on mica- and coal-based rocks of Lower Himalayas in Sikkim, India

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