Neutral Bremsstrahlung Emission in Xenon Unveiled

@article{Henriques2022NeutralBE,
  title={Neutral Bremsstrahlung Emission in Xenon Unveiled},
  author={Carla Oliveira Henriques and P. Amedo and JOSE M. Teixeira and Diego Gonz{\'a}lez-D{\'i}az and Carlos Azevedo and Armando Foglio Para and Justo Mart{\'i}n-Albo and {\'A}ngela Sa{\'a} Hern{\'a}ndez and J J G{\'o}mez-Cadenas and David R. Nygren and Cristina Maria Bernardes Monteiro and C. Adams and V{\'i}ctor H. {\'A}lvarez and L. Arazi and Isaac J. Arnquist and Kevin G. Bailey and F. Ballester and J. M. Benlloch-Rodŕıguez and F.I.G.M. Borges and N. K. Byrnes and S C{\'a}rcel and Jos{\'e} Vincente Carri{\'o}n and Susana Cebri{\'a}n and E. C. A. Church and Carlos A. N. Conde and T. Contreras and G. D́ıaz and J. D́ıaz and M. Diesburg and J. Escada and R. Esteve and Roland Felkai and Ant{\^o}nio Fernandes and Luis M P Fernandes and Paola Ferrario and A. L. Ferreira and E. D. C. Freitas and Jacek Generowicz and S. Ghosh and Azriel Goldschmidt and Roxanne Guenette and Rafael M. Guti{\'e}rrez and Jonathan Haefner and Kawtar Hafidi and John Michael Hauptman and J. A. Hernando Morata and Pablo Herrero and Vicente Herrero and Y. Ifergan and S. Johnston and B. J. P. Jones and Marija Kekic and L. Labarga and Andrew Laing and Patrice Lebrun and Neus L{\'o}pez-March and Marta Losada and Rui Daniel Passos Mano and A. Mart́ınez and Miryam Mart{\'i}nez-Vara and G. Mart{\'i}nez-Lema and A D McDonald and Francesco Monrabal and Francisco J. Mora and J. Mu{\~n}oz Vidal and Pau Novella and Beatriz Palmeiro and J. P{\'e}rez and Marc Querol and A. B. Redwine and J. Renner and Jos{\'e} Repond and S Riordan and Llu{\'i}s Ripoll and Y. Rodr{\'i}guez Garc{\'i}a and J. Rodŕıguez and L Rogers and B. Romeo and Carmen Romo-Luque and F.P. Santos and Joaquim Marques Ferreira dos Santos and A. Sim{\'o}n and Clement Sofka and Michel Sorel and T. Stiegler and Jos{\'e} F. Toledo and Jordi Torrent and A. Us{\'o}n and Jo{\~a}o Veloso and R. Webb and Ruth Weiss-Babai and J. T. White and Katherine Woodruff and Nadia Yahlali},
  journal={Physical Review X},
  year={2022}
}
We present evidence of non-excimer-based secondary scintillation in gaseous xenon, obtained using both the NEXT-White 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 has been 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… 
6 Citations

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Study of visible light scintillations in liquid argon and its mixtures with methane

In liquid argon TPCs for dark matter search and neutrino detection experiments, primary scintillations are used as a prompt signal of particle scattering, being intensively produced in the vacuum

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Traditionally, it has been assumed that electroluminescence (EL) in time projection chambers was purely an excimer-based emission. This idea changed when neutral bremsstrahlung (NBrS) was observed

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