Growth and spectroscopic properties of 6Li- and 10B-enriched crystals for heat-scintillation cryogenic bolometers used in the rare events searches

Rekia Belhoucif; Matias Velázquez; Yannick Petit; Olivier Pérez; Benoît Glorieux; Oudomsack Viraphong; Pierre de Marcillac; Noël Coron; Lidia Torres; Emmanuel Véron; AbdelHamid Kellou; Philippe Veber; Rodolphe Decourt; Hassan El Hafid

doi:10.1039/C3CE40176F

Growth and spectroscopic properties of ⁶Li- and ¹⁰B-enriched crystals for heat-scintillation cryogenic bolometers used in the rare events searches

Rekia Belhoucif,^ab Matias Velázquez,*^a Yannick Petit,^a Olivier Pérez,^c Benoît Glorieux,^a Oudomsack Viraphong,^a Pierre de Marcillac,^d Noël Coron,^d Lidia Torres,^de Emmanuel Véron,^f AbdelHamid Kellou,^b Philippe Veber,^a Rodolphe Decourt^a and Hassan El Hafid^a

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* Corresponding authors

^a CNRS, Université de Bordeaux, ICMCB, 87 avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France
E-mail: matias.velazquez@icmcb-bordeaux.cnrs.fr
Fax: +33 05 40 00 27 61
Tel: +33 05 40 00 27 56

^b Faculté de Physique, Laboratoire d'Électronique Quantique, BP 32 El alia, 16111 Bab Ezzouar, Algeria

^c CRISMAT, UMR 6508 CNRS/ENSICaen, 6 Bld du Mal Juin, 14050 Caen, France

^d IAS, Bâtiment 121, UMR 8617 Université Paris-Sud 11/CNRS, 91405 Orsay, France

^e Service d'Astrophysique, SAp-CEA/DSM/IRFU, Centre d'études de Saclay, Orme des Merisiers, Bât. 709, 91191 Gif-sur-Yvette, France

^f CEMHTI-CNRS UPR 3079, 1D Av. de la Recherche Scientifique, 45071 Orléans, France

Abstract

We present the crystal growth of centimeter-sized ⁶Li₆Eu(¹⁰BO₃)₃ and Li₆(Eu,Gd)(BO₃)₃ single crystals by combined Czochralski and Kyropoulos methods, initiated on specifically oriented seeds, with a heretofore unexplored concentration range for heat-scintillation cryogenic bolometers application. The crystal structure and lattice thermal expansion of the former, obtained for the first time by single crystal X-ray diffraction (XRD), and the spectroscopic characterizations together with a consistent set of related thermodynamical properties measurements (magnetic susceptibility, specific heat), also unknown to date, are discussed. Finally, preliminary scintillation measurements at low temperature between 300 and 1100 nm under X-ray excitation are shown.

CrystEngComm

Growth and spectroscopic properties of ⁶Li- and ¹⁰B-enriched crystals for heat-scintillation cryogenic bolometers used in the rare events searches

Abstract

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Growth and spectroscopic properties of ⁶Li- and ¹⁰B-enriched crystals for heat-scintillation cryogenic bolometers used in the rare events searches

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