Comparison of radiation-induced transmission degradation of borosilicate crown optical glass from four different manufacturers

Gusarov, A.; Doyle, Dominic; Glebov, Leonid; Berghmans, Francis

doi:10.1117/12.619199

Cited by 12 publications

(8 citation statements)

References 6 publications

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“…An interpolation of unknown data is hardly possible. For, example the induced absorption of boro-silicate glasses can become negative at , and this behavior cannot be derived from the data for [20]. We therefore have to conclude that our transmission data are not sufficient to explain the RI changes based on the Kramers-Krönig relations.…”

Section: Resultscontrasting

confidence: 46%

Effect of Ionizing Radiation on the Performance of Volume Holographic Elements

Gusarov

Berghmans

Uffelen

et al. 2008

IEEE Trans. Nucl. Sci.

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We evaluated the radiation tolerance of volume holographic elements written in photo-thermo refractive glass. To do so these elements were exposed to Co 60 gamma-radiation and 60 MeV protons. At 10 kGy dose levels a high stability has been observed. Our results confirm that such components can operate in a space radiation environment.Index Terms-Ionizing radiation, photo-thermo refractive glass, volume holographic elements.

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Section: Resultscontrasting

confidence: 46%

Effect of Ionizing Radiation on the Performance of Volume Holographic Elements

Gusarov

Berghmans

Uffelen

et al. 2008

IEEE Trans. Nucl. Sci.

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“…6b), the internal K concentration of K-feldspar (cf. Huntley and Baril, 1997), in our case contributing ca. 23 % to the environmental dose rate (cf.…”

Section: The Application Dimensionmentioning

confidence: 54%

Spatially resolved infrared radiofluorescence: single-grain K-feldspar dating using CCD imaging

Mittelstraß¹,

Kreutzer

2021

Geochronology

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Abstract. The success of luminescence dating as a chronological tool in Quaternary science builds upon innovative methodological approaches, providing new insights into past landscapes. Infrared radiofluorescence (IR-RF) on K-feldspar is such an innovative method that was already introduced two decades ago. IR-RF promises considerable extended temporal range and a simple measurement protocol, with more dating applications being published recently. To date, all applications have used multi-grain measurements. Herein, we take the next step by enabling IR-RF measurements on a single grain level. Our contribution introduces spatially resolved infrared radiofluorescence (SR IR-RF) on K-feldspars and intends to make SR IR-RF broadly accessible as a geochronological tool. In the first part of the article, we detail equipment, CCD camera settings and software needed to perform and analyse SR IR-RF measurements. We use a newly developed ImageJ macro to process the image data, identify IR-RF emitting grains and obtain single-grain IR-RF signal curves. For subsequent analysis, we apply the statistical programming environment R and the package Luminescence. In the second part of the article, we test SR IR-RF on two K-feldspar samples. One sample was irradiated artificially; the other sample received a natural dose. The artificially irradiated sample renders results indistinguishable from conventional IR-RF measurements with the photomultiplier tube. The natural sample seems to overestimate the expected dose by ca. 50 % on average. However, it also shows a lower dose component, resulting in ages consistent with the same sample's quartz fraction. Our experiments also revealed an unstable signal background due to our cameras' degenerated cooling system. Besides this technical issue specific to the system we used, SR IR-RF is ready for application. Our contribution provides guidance and software tools for methodological and applied luminescence (dating) studies on single-grain feldspars using radiofluorescence.

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“…Very often glass with the required characteristics is available from different manufacturers. 8 In this paper we therefore compare the radiation sensitivity of frequently used crown silicate glasses with n d Ϸ 1.517 ͑ d = 587.56 nm͒ and d Ϸ 64, i.e., glasses that all correspond to the 517640 group ͑international classifica-tion͒ but come from different manufacturers. When using optical glasses in a benign environment, e.g., out of any radiation field, small differences in the optical properties are of secondary importance.…”

Section: Introductionmentioning

confidence: 99%

Radiation-induced transmission degradation of borosilicate crown optical glass from four different manufacturers

et al. 2007

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Space-borne optical systems must be tolerant to radiation to guarantee that the required system performance is maintained during prolonged mission times. We show that the radiation hardness can be improved by selecting the relevant glass from a group of optical analogs. This conclusion is based on the study of gamma-radiation-induced absorption of crown glasses from group 517640 ͑glasses with n d Ϸ 1.517 and d Ϸ 64͒-BK7 and NBK7 ͑Schott͒, S-BSL7 ͑Ohara͒, BSC 517642 ͑Pilkington͒, and K8 ͑NITIOM͒. Our results show that whereas these glasses are optical analogs before irradiation, they behave differently during and after irradiation.

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Comparison of radiation-induced transmission degradation of borosilicate crown optical glass from four different manufacturers

Cited by 12 publications

References 6 publications

Effect of Ionizing Radiation on the Performance of Volume Holographic Elements

Effect of Ionizing Radiation on the Performance of Volume Holographic Elements

Spatially resolved infrared radiofluorescence: single-grain K-feldspar dating using CCD imaging

Radiation-induced transmission degradation of borosilicate crown optical glass from four different manufacturers

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