| Texto completo | |
| Autor(es): Mostrar menos - |
Cardoso, Dilson
;
Segreto, Ettore
;
Cruz, Ivana
;
da Silva, Edilene Deise
;
Zapelini, Iago William
;
Goncalves, Rosembergue G.
;
Freitas, G. S.
;
Caffer, Ana Maria
;
Souza, J. C.
;
Christovam, D. S.
;
Mazali, Italo O.
;
Reis, Cristhiane
;
Assaf, Elisabete
;
Assaf, Jose Mansur
;
Soccol, Renato
;
Bianchi, Pedro
;
Wiederhecker, Gustavo
;
Noriler, Dirceu
;
dos Santos, Cezar Rodrigo Aguiar
;
Brant, Krystal
;
Fontes, Magda
;
Oliveira Jr, N. F.
;
Correia, Daniel
;
Frandini, Heriques
;
Demolin, Frederico
;
Augusto, Andre
;
Doubnik, Roza
;
Adamowski, Mark
;
Montanari, David
;
Alegre, Thiago P. M.
;
Adriano, Cris
;
Machado, Ana Amelia
;
Pagliuso, P. G.
Número total de Autores: 33
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Instrumentation; v. 19, n. 8, p. 9-pg., 2024-08-01. |
| Resumo | |
In this work, we unveil the potential of nitrogen (N-2) adsorption from Liquid Argon (LAr) through the molecular sieves (zeolites) Li-FAU Adsorbents. We report detailed studies about N-2 gas adsorption at T = 89 K using a commercial Micromeritics ASAP-2420 equipment and N-2 purification from LAr using the Purification Cryostat (PuLArC) at IFGW/Unicamp. We argue that the N-2 adsorption by the Li-FAU is possible thanks to the stronger interaction of N-2 with the lithium cations present in zeolite Li-FAU. In fact, the experiments performed in PuLArC have unequivocally shown that the Li-FAU adsorbent was capable of capturing N-2, reducing a N-2 contamination of 20-50 ppm to 0.1-1.0 ppm in 1-2 hours of circulation time in LAr for several runs. This result demonstrated the great potential of the Li-FAU adsorbent for N-2 capturing in LAr and invoke further tests of this material in larger scale LAr cryostats in order to confirm the innovative proposal of using the Li-FAU molecular sieve in replacement of Molecular Sieve 4A, currently used in LAr cryostats for neutrino experiments. (AU) | |
| Processo FAPESP: | 20/01609-2 - Otimização dos procedimentos de purificação, regeneração e condensação de argônio para instalações de grande escala |
| Beneficiário: | Pascoal Jose Giglio Pagliuso |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |