LUX-ZEPLIN

Research group

Research theme

Sub department

About

VUV sensitisation of Eu3+ emission by Tb3+ in Ba3Tb(PO4)3-Eu

Journal of Luminescence 129:9 (2009) 945-947

Authors:

VB Mikhailik, H Kraus

Abstract:

The luminescence properties of Ba3Tb0.9Eu0.1(PO4)3 and Ba3Gd0.9Eu0.1(PO4)3 phosphors were studied for excitation over the 120-300 nm wavelength range. It is found that Tb3+, which exhibits a strong vacuum-ultraviolet (VUV) absorption band, provides sensitisation of Eu3+ emission in this host. This effect can be used to develop phosphors with enhanced conversion efficiency of the VUV radiation into visible light. © 2009 Elsevier B.V. All rights reserved.
More details from the publisher
More details

CRESST

Eas Publications Series 36 (2009) 231-236

Authors:

G Angloher, M Bauer, I Bavykina, A Bento, A Brown, C Bucci, C Ciemniak, C Coppi, G Deuter, FV Feilitzsch, D Hauff, S Henry, P Huff, J Imber, S Ingleby, C Isaila, J Jochum, M Kiefer, M Kimmerle, H Kraus, JC Lanfranchi, RF Lang, B Majorovits, M Malek, R McGowan, VB Mikhailik, E Pantic, F Petricca, S Pfister, W Potzel, F Pröbst, W Rau, S Roth, K Rottler, C Sailer, K Schäffner, J Schmaler, S Scholl, W Seidel, L Stodolsky, AJB Tolhurst, I Usherov, W Westphal

Abstract:

The CRESST-II direct Dark Matter search is located in the Gran Sasso underground laboratories, Italy. CaWO4 crystals are used as scintillating targets for WIMP (weakly interacting massive particle) interactions. They are operated as cryogenic calorimeters in combination with a second cryogenic detector used to measure the scintillation light produced in the target crystal. For each particle interaction, the combination of phonon and light signals provides an event by event discrimination which allows to distinguish known particles (alphas, betas, gammas, neutrons) from the expected signal of WIMPs. A major upgrade of the setup comprises modifications of the shielding, installation of a muon-veto, and new read out electronics, as well as a new detector-support structure to accommodate up to 33 detector modules, i.e. 10 kg of target mass. The experiment was thereafter successfully commissioned in 2007. Data obtained during this commissioning phase from 2 detector modules are presented here. Combining the data collected with these two detector modules with data from one single module obtained during the CRESST-I phase, the experiment could already place a limit of ∼6 × 10-7 pb for the spin independent WIMP-nucleon scattering cross section at a WIMP mass of ∼60 GeV/c2. © BAS, BDP Sciences 2009.
More details from the publisher
More details

Tungstate and molybdate scintillators to search for dark matter and double beta decay

IEEE Transactions on Nuclear Science 56:4 (2009) 2513-2518

Authors:

LL Nagornaya, FA Danevich, AM Dubovik, BV Grinyov, S Henry, V Kapustyanyk, H Kraus, DV Poda, VM Kudovbenko, VB Mikhailik, M Panasyuk, OG Polischuk, V Rudyk, V Tsybulskyi, IA Tupitsyna, YY Vostretsov

Abstract:

Results are presented on our latest research, aimed at the development and study of oxide scintillation crystals (ZnWO4, ZnMoO4, PbWO4, PbMoO4, and MgWO4) with high scintillation yield and low intrinsic radioactivity. We report on the improvement of these properties for conventional scintillators, as well as on new promising crystals based on metal tungstates and molybdates. The results are discussed in view of applying these materials in cryogenic experiments searching for dark matter and/or neutrinoless double beta decay. © 2006 IEEE.
More details from the publisher
More details

The Antarctic Impulsive Transient Antenna ultra-high energy neutrino detector: Design, performance, and sensitivity for the 2006–2007 balloon flight

Astroparticle Physics Elsevier 32:1 (2009) 10-41

Authors:

PW Gorham, P Allison, SW Barwick, JJ Beatty, DZ Besson, WR Binns, C Chen, P Chen, JM Clem, A Connolly, PF Dowkontt, MA DuVernois, RC Field, D Goldstein, A Goodhue, C Hast, CL Hebert, S Hoover, MH Israel, J Kowalski, JG Learned, KM Liewer, JT Link, E Lusczek, S Matsuno, BC Mercurio, C Miki, P Miočinović, J Nam, CJ Naudet, RJ Nichol, K Palladino, K Reil, A Romero-Wolf, M Rosen, L Ruckman, D Saltzberg, D Seckel, GS Varner, D Walz, Y Wang, C Williams, F Wu, ANITA Collaboration
More details from the publisher
More details
Details from ArXiV

New Limits on the Ultrahigh Energy Cosmic Neutrino Flux from the ANITA Experiment

Physical Review Letters American Physical Society (APS) 103:5 (2009) 051103

Authors:

PW Gorham, P Allison, SW Barwick, JJ Beatty, DZ Besson, WR Binns, C Chen, P Chen, JM Clem, A Connolly, PF Dowkontt, MA DuVernois, RC Field, D Goldstein, A Goodhue, C Hast, CL Hebert, S Hoover, MH Israel, J Kowalski, JG Learned, KM Liewer, JT Link, E Lusczek, S Matsuno, BC Mercurio, C Miki, P Miočinović, J Nam, CJ Naudet, J Ng, RJ Nichol, K Palladino, K Reil, A Romero-Wolf, M Rosen, L Ruckman, D Saltzberg, D Seckel, GS Varner, D Walz, Y Wang, F Wu
More details from the publisher
More details
More details
Details from ArXiV