000117996 001__ 117996 000117996 005__ 20240319081017.0 000117996 0247_ $$2doi$$a10.1103/physrevx.12.021005 000117996 0248_ $$2sideral$$a129414 000117996 037__ $$aART-2022-129414 000117996 041__ $$aeng 000117996 100__ $$aHenriques, C.¿A.¿O. 000117996 245__ $$aNeutral Bremsstrahlung Emission in Xenon Unveiled 000117996 260__ $$c2022 000117996 5060_ $$aAccess copy available to the general public$$fUnrestricted 000117996 5203_ $$aWe present evidence of non-excimer-based secondary scintillation in gaseous xenon, obtained using both the NEXT-White time projection chamber (TPC) and a dedicated setup. Detailed comparison with first-principle calculations allows us to assign this scintillation mechanism to neutral bremsstrahlung (NBrS), a process that is postulated to exist in xenon that has been largely overlooked. For photon emission below 1000 nm, the NBrS yield increases from about 10−2 photon=e− cm−1 bar−1 at pressure-reduced electric field values of 50 V cm−1 bar−1 to above 3 × 10−1 photon=e− cm−1 bar−1 at 500 V cm−1 bar−1. Above 1.5 kV cm−1 bar−1, values that are typically employed for electroluminescence, it is estimated that NBrS is present with an intensity around 1 photon=e− cm−1 bar−1, which is about 2 orders of magnitude lower than conventional, excimer-based electroluminescence. Despite being fainter than its excimeric counterpart, our calculations reveal that NBrS causes luminous backgrounds that can interfere, in either gas or liquid phase, with the ability to distinguish and/or to precisely measure low primary-scintillation signals (S1). In particular, we show this to be the case in the “buffer” region, where keeping the electric field below the electroluminescence threshold does not suffice to extinguish secondary scintillation. The electric field leakage in this region should be mitigated to avoid intolerable levels of NBrS emission. Furthermore, we show that this new source of light emission opens up a viable path toward obtaining S2 signals for discrimination purposes in future single-phase liquid TPCs for neutrino and dark matter physics, with estimated yields up to 20–50 photons=e− cm−1. 000117996 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000117996 590__ $$a12.5$$b2022 000117996 592__ $$a6.267$$b2022 000117996 591__ $$aPHYSICS, MULTIDISCIPLINARY$$b6 / 85 = 0.071$$c2022$$dQ1$$eT1 000117996 593__ $$aPhysics and Astronomy (miscellaneous)$$c2022$$dQ1 000117996 594__ $$a26.2$$b2022 000117996 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000117996 700__ $$aAmedo, P. 000117996 700__ $$aTeixeira, J.¿M.¿R. 000117996 700__ $$aGonzález-Díaz, D. 000117996 700__ $$aAzevedo, C.¿D.¿R. 000117996 700__ $$aPara, A. 000117996 700__ $$aMartín-Albo, J. 000117996 700__ $$aSaa Hernandez, A. 000117996 700__ $$aGómez-Cadenas, J.¿J. 000117996 700__ $$aNygren, D.¿R. 000117996 700__ $$aMonteiro, C.¿M.¿B. 000117996 700__ $$aAdams, C. 000117996 700__ $$aÁlvarez, V. 000117996 700__ $$aArazi, L. 000117996 700__ $$aArnquist, I.¿J. 000117996 700__ $$aBailey, K. 000117996 700__ $$aBallester, F. 000117996 700__ $$aBenlloch-Rodríguez, J.¿M. 000117996 700__ $$aBorges, F.¿I.¿G.¿M. 000117996 700__ $$aByrnes, N. 000117996 700__ $$aCárcel, S. 000117996 700__ $$aCarrión, J.¿V. 000117996 700__ $$0(orcid)0000-0002-6948-5101$$aCebrián, S.$$uUniversidad de Zaragoza 000117996 700__ $$aChurch, E. 000117996 700__ $$aConde, C.¿A.¿N. 000117996 700__ $$aContreras, T. 000117996 700__ $$aDíaz, G. 000117996 700__ $$aDíaz, J. 000117996 700__ $$aDiesburg, M. 000117996 700__ $$aEscada, J. 000117996 700__ $$aEsteve, R. 000117996 700__ $$aFelkai, R. 000117996 700__ $$aFernandes, A.¿F.¿M. 000117996 700__ $$aFernandes, L.¿M.¿P. 000117996 700__ $$aFerrario, P. 000117996 700__ $$aFerreira, A.¿L. 000117996 700__ $$aFreitas, E.¿D.¿C. 000117996 700__ $$aGenerowicz, J. 000117996 700__ $$aGhosh, S. 000117996 700__ $$aGoldschmidt, A. 000117996 700__ $$aGuenette, R. 000117996 700__ $$aGutiérrez, R.¿M. 000117996 700__ $$aHaefner, J. 000117996 700__ $$aHafidi, K. 000117996 700__ $$aHauptman, J. 000117996 700__ $$aHernando Morata, J.¿A. 000117996 700__ $$aHerrero, P. 000117996 700__ $$aHerrero, V. 000117996 700__ $$aIfergan, Y. 000117996 700__ $$aJones, B.¿J.¿P. 000117996 700__ $$aKekic, M. 000117996 700__ $$aLabarga, L. 000117996 700__ $$aLaing, A. 000117996 700__ $$aLebrun, P. 000117996 700__ $$aLópez-March, N. 000117996 700__ $$aLosada, M. 000117996 700__ $$aMano, R.¿D.¿P. 000117996 700__ $$aMartínez, A. 000117996 700__ $$aMartínez-Vara, M. 000117996 700__ $$aMartínez-Lema, G. 000117996 700__ $$aMcDonald, A.¿D. 000117996 700__ $$aMonrabal, F. 000117996 700__ $$aMora, F.¿J. 000117996 700__ $$aMuñoz Vidal, J. 000117996 700__ $$aNovella, P. 000117996 700__ $$aPalmeiro, B. 000117996 700__ $$aPérez, J. 000117996 700__ $$aQuerol, M. 000117996 700__ $$aRedwine, A.¿B. 000117996 700__ $$aRenner, J. 000117996 700__ $$aRepond, J. 000117996 700__ $$aRiordan, S. 000117996 700__ $$aRipoll, L. 000117996 700__ $$aRodríguez García, Y. 000117996 700__ $$aRodríguez, J. 000117996 700__ $$aRogers, L. 000117996 700__ $$aRomeo, B. 000117996 700__ $$aRomo-Luque, C. 000117996 700__ $$aSantos, F.¿P. 000117996 700__ $$ados Santos, J.¿M.¿F. 000117996 700__ $$aSimón, A. 000117996 700__ $$aSofka, C. 000117996 700__ $$aSorel, M. 000117996 700__ $$aStiegler, T. 000117996 700__ $$aToledo, J.¿F. 000117996 700__ $$aTorrent, J. 000117996 700__ $$aUsón, A. 000117996 700__ $$aVeloso, J.¿F.¿C.¿A. 000117996 700__ $$aWebb, R. 000117996 700__ $$aWeiss-Babai, R. 000117996 700__ $$aWhite, J.¿T. 000117996 700__ $$aWoodruff, K. 000117996 700__ $$aYahlali, N. 000117996 700__ $$a 000117996 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl. 000117996 773__ $$g12, 2 (2022), 021005 [23 pp.]$$pPhysical review. X$$tPhysical review. X$$x2160-3308 000117996 8564_ $$s1707957$$uhttps://zaguan.unizar.es/record/117996/files/texto_completo.pdf$$yVersión publicada 000117996 8564_ $$s2437716$$uhttps://zaguan.unizar.es/record/117996/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000117996 909CO $$ooai:zaguan.unizar.es:117996$$particulos$$pdriver 000117996 951__ $$a2024-03-18-15:47:34 000117996 980__ $$aARTICLE