Further investigations on IR-RF: Dose recovery and correction

Murari, Madhav K.; Kreutzer, Sebastian; Fuchs, Markus

doi:10.1016/j.radmeas.2018.04.017

Cited by 14 publications

(28 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5B). To obtain the D e s, we applied the vertical and horizontal sliding technique (Murari et al, 2018) to TH0 and used only horizontal sliding for sample BDX16651 due to the absence of visible curvature in the IR-RF curve.…”

Section: Methodsmentioning

confidence: 99%

“…In the data analysis process, the RF nat signal curve is slid vertically and horizontally signal curve until to best match the RF reg curve. The horizontal sliding distance is the accumulated dose needed to match the natural RF signal, thus defining the equivalent dose (Murari et al, 2018). Measurement durations are user-defined.…”

Section: Measurement Protocolmentioning

confidence: 99%

“…The resulting dose distribution can be displayed and further evaluated by any of the various functions for dose statistics, the 'Luminescence' package provides. In the example above, we allowed vertical sliding after Murari et al (2018) in the function analyse_IRSAR.RF() (parameter vslide_range).…”

Section: Step 3: Grain Detection and Roi Assignmentmentioning

confidence: 99%

See 2 more Smart Citations

Spatially Resolved Infrared Radiofluorescence: Single-grain K-feldspar Dating using CCD Imaging

Mittelstraß¹,

Kreutzer²

2021

Preprint

Self Cite

View full text Add to dashboard Cite

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 already introduced two decades ago. IR-RF promises considerable extended temporal range and a simple measurement protocol, with more dating applications published recently. To date, all applications use 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 manuscript, 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 manuscript, 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.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Measurement Protocolmentioning

confidence: 99%

See 1 more Smart Citation

Spatially Resolved Infrared Radiofluorescence: Single-grain K-feldspar Dating using CCD Imaging

Mittelstraß¹,

Kreutzer²

2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the data analysis process, the RF nat signal curve is slid vertically and horizontally along the signal curve until the best match is achieved with the RF reg curve. The horizontal sliding distance is the accumulated dose needed to match the natural RF signal, thus defining the equivalent dose (Murari et al, 2018). Measurement durations are user-defined.…”

Section: Measurement Protocolmentioning

confidence: 99%

“…The resulting dose distribution can be displayed and further evaluated by any of the various functions for dose statistics the Luminescence package provides. In the example above, we allowed vertical sliding after Murari et al (2018) in the function analyse_IRSAR.RF() (parameter vslide_range). Vertical sliding can improve the equivalent dose results' accuracy but needs a significant curvature in the IR-RF decay to work properly.…”

Section: #Plot Dose Distribution Plot_abanicoplot(equivalent_doses)mentioning

confidence: 99%

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

Mittelstraß¹,

Kreutzer

2021

Geochronology

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Optical dating of sediments using feldspar

Tsukamoto

2025

Encyclopedia of Quaternary Science

View full text Add to dashboard Cite

Further investigations on IR-RF: Dose recovery and correction

Cited by 14 publications

References 20 publications

Spatially Resolved Infrared Radiofluorescence: Single-grain K-feldspar Dating using CCD Imaging

Spatially Resolved Infrared Radiofluorescence: Single-grain K-feldspar Dating using CCD Imaging

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

Optical dating of sediments using feldspar

Contact Info

Product

Resources

About