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Stenzel O, Wilbrandt S, Wolf J, Schürmann M, Kaiser N, Ristau D, Ehlers H, Carstens F, Schippel S, Mechold L, Rauhut R, Kennedy M, Bischoff M, Nowitzki T, Zöller A, Hagedorn H, Reus H, Hegemann T, Starke K, Harhausen J, Foest R, Schumacher J. Investigation of the refractive index repeatability for tantalum pentoxide coatings, prepared by physical vapor film deposition techniques. Appl Opt 2017; 56:C193-C200. [PMID: 28158073 DOI: 10.1364/ao.56.00c193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Random effects in the repeatability of refractive index and absorption edge position of tantalum pentoxide layers prepared by plasma-ion-assisted electron-beam evaporation, ion beam sputtering, and magnetron sputtering are investigated and quantified. Standard deviations in refractive index between 4*10-4 and 4*10-3 have been obtained. Here, lowest standard deviations in refractive index close to our detection threshold could be achieved by both ion beam sputtering and plasma-ion-assisted deposition. In relation to the corresponding mean values, the standard deviations in band-edge position and refractive index are of similar order.
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Angloher G, Bento A, Bucci C, Canonica L, Defay X, Erb A, Feilitzsch FV, Ferreiro Iachellini N, Gorla P, Gütlein A, Hauff D, Jochum J, Kiefer M, Kluck H, Kraus H, Lanfranchi JC, Loebell J, Münster A, Pagliarone C, Petricca F, Potzel W, Pröbst F, Reindl F, Schäffner K, Schieck J, Schönert S, Seidel W, Stodolsky L, Strandhagen C, Strauss R, Tanzke A, Trinh Thi HH, Türkoğlu C, Uffinger M, Ulrich A, Usherov I, Wawoczny S, Willers M, Wüstrich M, Zöller A. Limits on Momentum-Dependent Asymmetric Dark Matter with CRESST-II. Phys Rev Lett 2016; 117:021303. [PMID: 27447498 DOI: 10.1103/physrevlett.117.021303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 06/06/2023]
Abstract
The usual assumption in direct dark matter searches is to consider only the spin-dependent or spin-independent scattering of dark matter particles. However, especially in models with light dark matter particles O(GeV/c^{2}), operators which carry additional powers of the momentum transfer q^{2} can become dominant. One such model based on asymmetric dark matter has been invoked to overcome discrepancies in helioseismology and an indication was found for a particle with a preferred mass of 3 GeV/c^{2} and a cross section of 10^{-37} cm^{2}. Recent data from the CRESST-II experiment, which uses cryogenic detectors based on CaWO_{4} to search for nuclear recoils induced by dark matter particles, are used to constrain these momentum-dependent models. The low energy threshold of 307 eV for nuclear recoils of the detector used, allows us to rule out the proposed best fit value above.
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Affiliation(s)
- G Angloher
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - A Bento
- Departamento de Fisica, Universidade de Coimbra, P3004 516 Coimbra, Portugal
| | - C Bucci
- INFN, Laboratori Nazionali del Gran Sasso, I-67010 Assergi, Italy
| | - L Canonica
- INFN, Laboratori Nazionali del Gran Sasso, I-67010 Assergi, Italy
| | - X Defay
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
| | - A Erb
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
- Walther-Meißner-Institut für Tieftemperaturforschung, D-85748 Garching, Germany
| | - F V Feilitzsch
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
| | | | - P Gorla
- INFN, Laboratori Nazionali del Gran Sasso, I-67010 Assergi, Italy
| | - A Gütlein
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, A-1050 Wien, Austria and Atominstitut, Vienna University of Technology, A-1020 Wien, Austria
| | - D Hauff
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - J Jochum
- Eberhard-Karls-Universität Tübingen, D-72076 Tübingen, Germany
| | - M Kiefer
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - H Kluck
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, A-1050 Wien, Austria and Atominstitut, Vienna University of Technology, A-1020 Wien, Austria
| | - H Kraus
- Department of Physics, University of Oxford, Oxford OX1 3RH, United Kingdom
| | - J-C Lanfranchi
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
| | - J Loebell
- Eberhard-Karls-Universität Tübingen, D-72076 Tübingen, Germany
| | - A Münster
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
| | - C Pagliarone
- INFN, Laboratori Nazionali del Gran Sasso, I-67010 Assergi, Italy
| | - F Petricca
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - W Potzel
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
| | - F Pröbst
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - F Reindl
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - K Schäffner
- INFN, Laboratori Nazionali del Gran Sasso, I-67010 Assergi, Italy
| | - J Schieck
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, A-1050 Wien, Austria and Atominstitut, Vienna University of Technology, A-1020 Wien, Austria
| | - S Schönert
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
| | - W Seidel
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - L Stodolsky
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - C Strandhagen
- Eberhard-Karls-Universität Tübingen, D-72076 Tübingen, Germany
| | - R Strauss
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - A Tanzke
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - H H Trinh Thi
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
| | - C Türkoğlu
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, A-1050 Wien, Austria and Atominstitut, Vienna University of Technology, A-1020 Wien, Austria
| | - M Uffinger
- Eberhard-Karls-Universität Tübingen, D-72076 Tübingen, Germany
| | - A Ulrich
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
| | - I Usherov
- Eberhard-Karls-Universität Tübingen, D-72076 Tübingen, Germany
| | - S Wawoczny
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
| | - M Willers
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
| | - M Wüstrich
- Max-Planck-Institut für Physik, D-80805 München, Germany
| | - A Zöller
- Physik-Department and Excellence Cluster Universe, Technische Universität München, D-85747 Garching, Germany
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