Gadolinium-Based Hybrid Ultra-Low-Background Material for Protecting the Darkside20k Dark Matter Detector from Background Neutrons

Autor:	M. P. Zykova, I. Kh. Avetisov, A. S. Chepurnov, M. B. Grishechkin, Andrew Khomyakov, I. S. Nikulin
Rok vydání:	2021
Předmět:	Uniform distribution (continuous) Materials science Gadolinium Detector Dark matter technology industry and agriculture chemistry.chemical_element Neutron temperature Matrix (chemical analysis) chemistry Mechanics of Materials Materials Chemistry Ceramics and Composites Neutron Composite material Hybrid material
Zdroj:	Glass and Ceramics. 78:91-96
ISSN:	1573-8515 0361-7610
Popis:	A laboratory technique was developed for obtaining an ultra-low-background hybrid material based on organic glass — polymethyl methacrylate (PMMA). 157Gd nuclei are used as an efficient absorber of thermal neutrons in the hybrid material. A uniform distribution of gadolinium in the PMMAmatrix is achieved by introducing the gadolinium in the form of a coordination compound — gadolinium acetylacetonate — into the hybrid material. A uniform gadolinium distribution was achieved in a 5 cm thick matrix of hybrid material with gadolinium mass content from 1.0 to 1.5%. It is shown that at 298 K the mechanical characteristics of the hybrid material samples coincide with nominally pure PMMA, but at 77 K the hybrid material is inferior to pure PMMA within admissible requirements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::00a67717db29679d0a7ace8718ed45c9 https://doi.org/10.1007/s10717-021-00354-4 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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