Demonstration of Single-Barium-Ion Sensitivity for Neutrinoless Double-Beta Decay Using Single-Molecule Fluorescence Imaging

A new method to tag the barium daughter in the double-beta decay of ^{136}Xe is reported. Using the technique of single molecule fluorescent imaging (SMFI), individual barium dication (Ba^{++}) resolution at a transparent scanning surface is demonstrated. A single-step photobleach confirms the singl...

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Veröffentlicht in:	Physical review letters 2018-03, Vol.120 (13), p.132504-132504, Article 132504
Hauptverfasser:	McDonald, A D, Jones, B J P, Nygren, D R, Adams, C, Álvarez, V, Azevedo, C D R, Benlloch-Rodríguez, J M, Borges, F I G M, Botas, A, Cárcel, S, Carrión, J V, Cebrián, S, Conde, C A N, Díaz, J, Diesburg, M, Escada, J, Esteve, R, Felkai, R, Fernandes, L M P, Ferrario, P, Ferreira, A L, Freitas, E D C, Goldschmidt, A, Gómez-Cadenas, J J, González-Díaz, D, Gutiérrez, R M, Guenette, R, Hafidi, K, Hauptman, J, Henriques, C A O, Hernandez, A I, Hernando Morata, J A, Herrero, V, Johnston, S, Labarga, L, Laing, A, Lebrun, P, Liubarsky, I, López-March, N, Losada, M, Martín-Albo, J, Martínez-Lema, G, Martínez, A, Monrabal, F, Monteiro, C M B, Mora, F J, Moutinho, L M, Muñoz Vidal, J, Musti, M, Nebot-Guinot, M, Novella, P, Palmeiro, B, Para, A, Pérez, J, Querol, M, Repond, J, Renner, J, Riordan, S, Ripoll, L, Rodríguez, J, Rogers, L, Santos, F P, Dos Santos, J M F, Simón, A, Sofka, C, Sorel, M, Stiegler, T, Toledo, J F, Torrent, J, Tsamalaidze, Z, Veloso, J F C A, Webb, R, White, J T, Yahlali, N
Format:	Artikel
Sprache:	eng
Schlagworte:	Barium Beta decay Fluorescence Fluoroscopic imaging INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY NUCLEAR PHYSICS AND RADIATION PHYSICS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Xenon
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Zusammenfassung:	A new method to tag the barium daughter in the double-beta decay of ^{136}Xe is reported. Using the technique of single molecule fluorescent imaging (SMFI), individual barium dication (Ba^{++}) resolution at a transparent scanning surface is demonstrated. A single-step photobleach confirms the single ion interpretation. Individual ions are localized with superresolution (∼2 nm), and detected with a statistical significance of 12.9σ over backgrounds. This lays the foundation for a new and potentially background-free neutrinoless double-beta decay technology, based on SMFI coupled to high pressure xenon gas time projection chambers.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.120.132504