17O enrichment of CaWO4 crystals for spin-dependent DM search

Angelina Kinast; Andreas Erb; Stefan Schönert; Raimund Strauss; Jürgen Haase

¹⁷O enrichment of CaWO₄ crystals for spin-dependent DM search

Angelina Kinast, Andreas Erb, Stefan Schönert, Raimund Strauss, Jürgen Haase

Chair of Experimental Astroparticle Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

For many years, various experiments have attempted to shed light on the nature of dark matter (DM). This work investigates the possibility of using CaWO₄ crystals for the direct search of spin-dependent DM interactions using the isotope ¹⁷O with a nuclear spin of 5/2. Due to the low natural abundance of 0.038%, an enrichment of the CaWO₄ crystals with ¹⁷O is developed during the crystal production process at the Technical University of Munich. Three CaWO₄ crystals were enriched, and their ¹⁷O content was measured by nuclear magnetic resonance spectroscopy at the University of Leipzig. This paper presents the concept and first results of the ¹⁷O enrichment and discusses the possibility of using enriched crystals to increase the sensitivity for the spin-dependent DM search with CRESST.

Original language	English
Article number	091
Journal	Proceedings of Science
Volume	441
State	Published - 22 Mar 2024
Event	18th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2023 - Vienna, Austria Duration: 28 Aug 2023 → 1 Sep 2023

Cite this

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title = "17O enrichment of CaWO4 crystals for spin-dependent DM search",

abstract = "For many years, various experiments have attempted to shed light on the nature of dark matter (DM). This work investigates the possibility of using CaWO4 crystals for the direct search of spin-dependent DM interactions using the isotope 17O with a nuclear spin of 5/2. Due to the low natural abundance of 0.038%, an enrichment of the CaWO4 crystals with 17O is developed during the crystal production process at the Technical University of Munich. Three CaWO4 crystals were enriched, and their 17O content was measured by nuclear magnetic resonance spectroscopy at the University of Leipzig. This paper presents the concept and first results of the 17O enrichment and discusses the possibility of using enriched crystals to increase the sensitivity for the spin-dependent DM search with CRESST.",

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AU - Kinast, Angelina

AU - Erb, Andreas

AU - Schönert, Stefan

AU - Strauss, Raimund

AU - Haase, Jürgen

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).

PY - 2024/3/22

Y1 - 2024/3/22

N2 - For many years, various experiments have attempted to shed light on the nature of dark matter (DM). This work investigates the possibility of using CaWO4 crystals for the direct search of spin-dependent DM interactions using the isotope 17O with a nuclear spin of 5/2. Due to the low natural abundance of 0.038%, an enrichment of the CaWO4 crystals with 17O is developed during the crystal production process at the Technical University of Munich. Three CaWO4 crystals were enriched, and their 17O content was measured by nuclear magnetic resonance spectroscopy at the University of Leipzig. This paper presents the concept and first results of the 17O enrichment and discusses the possibility of using enriched crystals to increase the sensitivity for the spin-dependent DM search with CRESST.

AB - For many years, various experiments have attempted to shed light on the nature of dark matter (DM). This work investigates the possibility of using CaWO4 crystals for the direct search of spin-dependent DM interactions using the isotope 17O with a nuclear spin of 5/2. Due to the low natural abundance of 0.038%, an enrichment of the CaWO4 crystals with 17O is developed during the crystal production process at the Technical University of Munich. Three CaWO4 crystals were enriched, and their 17O content was measured by nuclear magnetic resonance spectroscopy at the University of Leipzig. This paper presents the concept and first results of the 17O enrichment and discusses the possibility of using enriched crystals to increase the sensitivity for the spin-dependent DM search with CRESST.

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M3 - Conference article

AN - SCOPUS:85189204226

SN - 1824-8039

VL - 441

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 091

T2 - 18th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2023

Y2 - 28 August 2023 through 1 September 2023

ER -

¹⁷O enrichment of CaWO₄ crystals for spin-dependent DM search

Abstract

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