000117391 001__ 117391
000117391 005__ 20230519145559.0
000117391 0247_ $$2doi$$a10.1063/5.0050124
000117391 0248_ $$2sideral$$a126602
000117391 037__ $$aART-2021-126602
000117391 041__ $$aeng
000117391 100__ $$aBandac, I.C.
000117391 245__ $$aPhonon-mediated crystal detectors with metallic film coating capable of rejecting a and ß events induced by surface radioactivity
000117391 260__ $$c2021
000117391 5060_ $$aAccess copy available to the general public$$fUnrestricted
000117391 5203_ $$aPhonon-mediated particle detectors based on single crystals and operated at millikelvin temperatures are used in rare-event experiments for neutrino physics and dark-matter searches. In general, these devices are not sensitive to the particle impact point, especially if the detection is mediated by thermal phonons. In this Letter, we demonstrate that excellent discrimination between interior and surface ß and a events can be achieved by coating a crystal face with a thin metallic film, either continuous or in the form of a grid. The coating affects the phonon energy downconversion cascade that follows the particle interaction, leading to a modified signal shape for close-to-film events. An efficient identification of surface events was demonstrated with detectors based on a rectangular 20 × 20 × 10 mm3 Li2MoO4 crystal coated with a Pd normal-metal film (10 nm thick) and with Al-Pd superconductive bi-layers (100 nm-10 nm thick) on a 20 × 20 mm2 face. Discrimination capabilities were tested with 238U sources emitting both a and ß particles. Surface events are identified for energy depositions down to millimeter-scale depths from the coated surface. With this technology, a substantial reduction of the background level can be achieved in experiments searching for neutrinoless double-beta decay. © 2021 Author(s).
000117391 536__ $$9info:eu-repo/grantAgreement/EC/H2020/742345/EU/Cryogenic Rare-event Observatory with Surface Sensitivity/CROSS$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 742345-CROSS
000117391 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000117391 590__ $$a3.971$$b2021
000117391 592__ $$a1.025$$b2021
000117391 594__ $$a6.6$$b2021
000117391 591__ $$aPHYSICS, APPLIED$$b50 / 161 = 0.311$$c2021$$dQ2$$eT1
000117391 593__ $$aPhysics and Astronomy (miscellaneous)$$c2021$$dQ1
000117391 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000117391 700__ $$aBarabash, A.S.
000117391 700__ $$aBergé,L.
000117391 700__ $$aBourgeois, C.
000117391 700__ $$aCalvo-Mozota, J.M.
000117391 700__ $$aCarniti, P.
000117391 700__ $$aChapellier, M.
000117391 700__ $$aDecombarieu, M.
000117391 700__ $$aDafinei, I.
000117391 700__ $$aDanevich, F.A.
000117391 700__ $$aDumoulin, L.
000117391 700__ $$aFerri, F.
000117391 700__ $$aGiuliani, A.
000117391 700__ $$aGotti, C.
000117391 700__ $$aGras, P.
000117391 700__ $$aGuerard, E.
000117391 700__ $$aIanni, A.
000117391 700__ $$aKhalife, H.
000117391 700__ $$aKonovalov, S.I.
000117391 700__ $$aLoaiza, P.
000117391 700__ $$aMadhukuttan, M.
000117391 700__ $$aDemarcillac, P.
000117391 700__ $$aMariam, R.
000117391 700__ $$aMarnieros, S.
000117391 700__ $$aMarrache-Kikuchi, C.A.
000117391 700__ $$0(orcid)0000-0002-9043-4691$$aMartinez, M.$$uUniversidad de Zaragoza
000117391 700__ $$aNones, C.
000117391 700__ $$aOlivieri, E.
000117391 700__ $$aPessina, G.
000117391 700__ $$aPoda, D.V.
000117391 700__ $$aRedon, T.
000117391 700__ $$aScarpaci, J.-A.
000117391 700__ $$aTretyak, V.I.
000117391 700__ $$aUmatov, V.I.
000117391 700__ $$aZarytskyy, M.M.
000117391 700__ $$aZolotarova, A.S.
000117391 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl.
000117391 773__ $$g118 (2021), [7 pp]$$pAppl. phys. lett.$$tApplied Physics Letters$$x0003-6951
000117391 8564_ $$s2547654$$uhttps://zaguan.unizar.es/record/117391/files/texto_completo.pdf$$yVersión publicada
000117391 8564_ $$s1599137$$uhttps://zaguan.unizar.es/record/117391/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000117391 909CO $$ooai:zaguan.unizar.es:117391$$particulos$$pdriver
000117391 951__ $$a2023-05-18-15:58:33
000117391 980__ $$aARTICLE