Effect of low electric fields on alpha scintillation light yield in liquid argon

Agnes, P.;Albuquerque, I. F. M.;Alexander, T.;Alton, A. K.;Asner, D. M.;Back, H. O.;Baldin, B.;Biery, K.;Bocci, V.;Bonfini, G.;Bonivento, W.;Bossa, M.;Bottino, B.;Brigatti, A.;Brodsky, J.;Budano, F.;Bussino, S.;CADEDDU, MATTEO;CADONI, MARIANO;Calaprice, F.;Canci, N.;Candela, A.;CARAVATI, MAURO;Cariello, M.;Carlini, M.;Catalanotti, S.;Cavalcante, P.;Chepurnov, A.;CICALO', CORRADO;Cocco, A. G.;Covone, G.;D'Angelo, D.;D'Incecco, M.;Davini, S.;Cecco, S. De;Deo, M. De;Vincenzi, M. De;Derbin, A.;DEVOTO, ALBERTO;Eusanio, F. Di;Pietro, G. Di;Dionisi, C.;Edkins, E.;Empl, A.;Fan, A.;Fiorillo, G.;Fomenko, K.;Forster, G.;Franco, D.;Gabriele, F.;GALBIATI, CRISTIANO;Giagu, S.;Giganti, C.;Giovanetti, G. K.;Goretti, A. M.;Granato, F.;Gromov, M.;Guan, M.;Guardincerri, Y.;Hackett, B. R.;Herner, K.;Hughes, D.;Humble, P.;Hungerford, E. V.;Ianni, A.;James, I.;Johnson, T. N.;Jollet, C.;Keeter, K.;Kendziora, C. L.;Koh, G.;Korablev, D.;Korga, G.;Kubankin, A.;Li, X.;LISSIA, MARCELLO;Loer, B.;Lombardi, P.;Longo, G.;Ma, Y.;Machulin, I. N.;Mandarano, A.;Mari, S. M.;Maricic, J.;Marini, L.;Martoff, C. J.;Meregaglia, A.;Meyers, P. D.;Milincic, R.;Miller, J. D.;Montanari, D.;Monte, A.;Mount, B. J.;Muratova, V. N.;Musico, P.;Napolitano, J.;Agasson, A. Navrer;Odrowski, S.;Oleinik, A.;Orsini, M.;Ortica, F.;Pagani, L.;Pallavicini, M.;Pantic, E.;Parmeggiano, S.;Pelczar, K.;Pelliccia, N.;Pocar, A.;Pordes, S.;Pugachev, D. A.;Qian, H.;Randle, K.;Ranucci, G.;Razeti, M.;Razeto, A.;Reinhold, B.;Renshaw, A. L.;Rescigno, M.;Riffard, Q.;Romani, A.;Rossi, B.;Rossi, N.;Rountree, D.;Sablone, D.;Saggese, P.;Sands, W.;Savarese, C.;Schlitzer, B.;Segreto, E.;Semenov, D. A.;Shields, E.;Singh, P. N.;Skorokhvatov, M. D.;Smirnov, O.;Sotnikov, A.;Stanford, C;Suvorov, Y.;Tartaglia, R.;Tatarowicz, J.;Testera, G.;Tonazzo, A.;Trinchese, P.;Unzhakov, E. V.;Verducci, M.;Vishneva, A.;Vogelaar, B.;Wada, M.;Walker, S.;Wang, H.;Wang, Y.;Watson, A. W.;Westerdale, S.;Wilhelmi, J.;Wojcik, M. M.;Xiang, X.;Xiao, X.;Xu, J.;Yang, C.;Zhong, W.;Zhu, C.;Zuzel, G.

2017-01-01

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Abstract

Measurements were made of scintillation light yield of alpha particles from the 222Rn decay chain within the DarkSide-50 liquid argon time projection chamber. The light yield was found to increase as the applied electric field increased, with alphas in a 200 V/cm electric field exhibiting a ∼2% increase in light yield compared to alphas in no field.