# Reflection Zone Plate Spectrometer For Li K Emission Detection In Lithium Compounds

Khalil Hassebi, Nicolas Rividi, Anne Verlaguet, Alexei Erko, Juergen Probst, Heike Loechel, Thomas Krist, Karine Le Guen, Philippe Jonnard

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Khalil Hassebi, Nicolas Rividi, Anne Verlaguet, Alexei Erko, Juergen Probst, et al. Reflection Zone Plate Spectrometer For Li K Emission Detection In Lithium Compounds. International Workshop on the Characterisation and quantification of lithium, Jun 2023, Paris, France. . [hal-04056076](https://hal.science/hal-04056076)

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https://hal.science/hal-04056076

Submitted on 20 Jun 2023

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Distributed under a Creative Commons Attribution 4.0 International License
# REFLECTION ZONE PLATE SPECTROMETER FOR LI K EMISSION DETECTION IN LITHIUM COMPOUNDS

Khalil Hassebi<fnref n="1" />, Nicolas Rividi<fnref n="2" />, Anne Verlaguet<fnref n="3" />, Alexei Erko†<fnref n="4" />,
Juergen Probst<fnref n="5" />, Heike Loechel<fnref n="5" />, Thomas Krist<fnref n="5" />, Karine Le Guen<fnref n="1" />, Philippe Jonnard<fnref n="1" />

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## Results:

The Li K emission occurs when a **2p** valence states transition to **1s** core states in lithium atoms and therefore the spectrum reflects the distribution of the p states within the valence band [2]. The Li K emission of lithium in LiF, Lepidolite K(Li,Al)₃ (Si, Al)₄O₁₀(OH)₂, Bikitaite LiAlSi₂O₆(OH)₂, and Amblygonite (Li,Na)Al PO₄(F,OH) is presented below.

Accumulation of Li on the surface after F being driven off the sample resulting to an emission identical to Li metal.

<figure><img src="image_7.png" /><figcaption>Figure 4: The Li K emission in LiF sample, presenting the emission band of Li metal and Li in oxide</figcaption></figure>

<figure><img src="image_8.png" /><figcaption>Figure 5: The x-ray emission spectra of Lepidolite and Amblygonite in the full range of the spectrometer</figcaption></figure>

<figure><img src="image_9.png" /><figcaption>Li K emission reported for the first time in minerals</figcaption></figure>

<figure><img src="image_10.png" /><figcaption>Figure 6: The Li K emission in the minerals: Lepidolite, Amblygonite, and Bikitaite.</figcaption></figure>

## Conclusion:

We demonstrate the possibility to spectroscopically analyze Li K emissions in different compounds using a non destructive and accessible technique. **We also report for the first time the Li K emission bands in minerals.** Our results unlocked potential for various applications to study in details the fine structure of valence band of lithium.

## References:

[1] A. Erko et al., Opt. Express, vol. 22, no. 14, p. 16897, Jul. 2014, doi: 10.1364/OE.22.016897.

[2] K. Hassebi et al., X-Ray Spectrometry, doi: 10.1002/xrs.3329

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<footnote n="1">1 Laboratoire de Chimie Physique—Matière et Rayonnement, Faculté des Sciences et Ingénierie, Sorbonne Université, UMR CNRS, 4 Place Jussieu, 75252 Paris Cedex 05, France</footnote>

<footnote n="2">2 Service Camparis, UMS 7154—CNRS, OSU Ecce Terra, Sorbonne Université, 4 place Jussieu, 75005 Paris, France</footnote>

<footnote n="3">3 Sorbonne Université, CNRS-INSU, Institut des Sciences de la Terre de Paris, ISTE P UMR 7193, F 75005 Paris, France</footnote>

<footnote n="4">4 Institut fürAngewandtePhotonik e. V., Rudower Chaussee 29-31, D-12489 Berlin, Germany</footnote>

<footnote n="5">5 Nano OpticsBerlin GmbH, Krumme Str 64, D-10627 Berlin, Germany</footnote>