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Defect Formation in NaI Crystals: A Novel Pathway to Dark Matter Detection

Fuente: arXiv
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Auteurs principaux: Angloher, G., Bharadwaj, M. R., Böhmer, A., Cababie, M., Colantoni, I., Dafinei, I., Di Marco, N., Dittmar, C., Ferella, F., Ferroni, F., Fichtinger, S., Filipponi, A., Frank, T., Friedl, M., Fuchs, D., Gai, L., Gapp, M., Heikinheimo, M., Hughes, M. N., Huitu, K., Kellermann, M., Maji, R., Mancuso, M., Pagnanini, L., Petricca, F., Pirro, S., Pröbst, F., Profeta, G., Puiu, A., Reindl, F., Schäffner, K., Schieck, J., Schreiner, P., Schwertner, C., Settembri, P., Shera, K., Stahlberg, M., Stendahl, A., Stukel, M., Tresca, C., Yue, S., Zema, V., Zhu, Y., Zimmermann, N., Di Giambattista, M., Giannessi, F., Rollo, R.
Format: Preprint
Publié: 2025
Sujets:
High Energy Physics - Phenomenology
Instrumentation and Methods for Astrophysics
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_version_ 1866908838803800064
author Angloher, G.
Bharadwaj, M. R.
Böhmer, A.
Cababie, M.
Colantoni, I.
Dafinei, I.
Di Marco, N.
Dittmar, C.
Ferella, F.
Ferroni, F.
Fichtinger, S.
Filipponi, A.
Frank, T.
Friedl, M.
Fuchs, D.
Gai, L.
Gapp, M.
Heikinheimo, M.
Hughes, M. N.
Huitu, K.
Kellermann, M.
Maji, R.
Mancuso, M.
Pagnanini, L.
Petricca, F.
Pirro, S.
Pröbst, F.
Profeta, G.
Puiu, A.
Reindl, F.
Schäffner, K.
Schieck, J.
Schreiner, P.
Schwertner, C.
Settembri, P.
Shera, K.
Stahlberg, M.
Stendahl, A.
Stukel, M.
Tresca, C.
Yue, S.
Zema, V.
Zhu, Y.
Zimmermann, N.
Di Giambattista, M.
Giannessi, F.
Rollo, R.
author_facet Angloher, G.
Bharadwaj, M. R.
Böhmer, A.
Cababie, M.
Colantoni, I.
Dafinei, I.
Di Marco, N.
Dittmar, C.
Ferella, F.
Ferroni, F.
Fichtinger, S.
Filipponi, A.
Frank, T.
Friedl, M.
Fuchs, D.
Gai, L.
Gapp, M.
Heikinheimo, M.
Hughes, M. N.
Huitu, K.
Kellermann, M.
Maji, R.
Mancuso, M.
Pagnanini, L.
Petricca, F.
Pirro, S.
Pröbst, F.
Profeta, G.
Puiu, A.
Reindl, F.
Schäffner, K.
Schieck, J.
Schreiner, P.
Schwertner, C.
Settembri, P.
Shera, K.
Stahlberg, M.
Stendahl, A.
Stukel, M.
Tresca, C.
Yue, S.
Zema, V.
Zhu, Y.
Zimmermann, N.
Di Giambattista, M.
Giannessi, F.
Rollo, R.
contents Sodium iodide (NaI) is a widely used scintillator in direct dark matter searches. In particular, NaI-based cryogenic scintillating calorimeters have emerged as promising candidates, like in the COSINUS experiment, for testing the annually modulating signal reported by DAMA/LIBRA. In this study, we investigate defect formation within NaI crystals and its impact on the dark matter detection signal. Using molecular dynamics simulations and density functional theory techniques, we simulate a DM particle collision on an NaI crystal, focusing on the possible defects formation and their structural and electronic properties. Our analysis includes a detailed study of the electronic states associated with the interstitial atoms and vacancies, the energetic cost of defect formation, and the anisotropic threshold displacement energy. Finally, we highlight the potential to exploit dark matter-induced defects as a novel detection channel, enabled by the introduction of new states within the electronic band gap.
format Preprint
id arxiv_https___arxiv_org_abs_2512_23553
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Defect Formation in NaI Crystals: A Novel Pathway to Dark Matter Detection
Angloher, G.
Bharadwaj, M. R.
Böhmer, A.
Cababie, M.
Colantoni, I.
Dafinei, I.
Di Marco, N.
Dittmar, C.
Ferella, F.
Ferroni, F.
Fichtinger, S.
Filipponi, A.
Frank, T.
Friedl, M.
Fuchs, D.
Gai, L.
Gapp, M.
Heikinheimo, M.
Hughes, M. N.
Huitu, K.
Kellermann, M.
Maji, R.
Mancuso, M.
Pagnanini, L.
Petricca, F.
Pirro, S.
Pröbst, F.
Profeta, G.
Puiu, A.
Reindl, F.
Schäffner, K.
Schieck, J.
Schreiner, P.
Schwertner, C.
Settembri, P.
Shera, K.
Stahlberg, M.
Stendahl, A.
Stukel, M.
Tresca, C.
Yue, S.
Zema, V.
Zhu, Y.
Zimmermann, N.
Di Giambattista, M.
Giannessi, F.
Rollo, R.
High Energy Physics - Phenomenology
Instrumentation and Methods for Astrophysics
Sodium iodide (NaI) is a widely used scintillator in direct dark matter searches. In particular, NaI-based cryogenic scintillating calorimeters have emerged as promising candidates, like in the COSINUS experiment, for testing the annually modulating signal reported by DAMA/LIBRA. In this study, we investigate defect formation within NaI crystals and its impact on the dark matter detection signal. Using molecular dynamics simulations and density functional theory techniques, we simulate a DM particle collision on an NaI crystal, focusing on the possible defects formation and their structural and electronic properties. Our analysis includes a detailed study of the electronic states associated with the interstitial atoms and vacancies, the energetic cost of defect formation, and the anisotropic threshold displacement energy. Finally, we highlight the potential to exploit dark matter-induced defects as a novel detection channel, enabled by the introduction of new states within the electronic band gap.
title Defect Formation in NaI Crystals: A Novel Pathway to Dark Matter Detection
topic High Energy Physics - Phenomenology
Instrumentation and Methods for Astrophysics
url https://arxiv.org/abs/2512.23553

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