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22 results on '"Pavlopoulos, N"'

1. Novel Single Photon Detectors for UV Imaging

Author

Fonte, P., Francke, T., Pavlopoulos, N., Peskov, V., and Rodionov, I.

Subjects
Physics - Instrumentation and Detectors
Abstract

There are several applications which require high position resolution UV imaging. For these applications we have developed and successfully tested a new version of a 2D UV single photon imaging detector based on a microgap RPC. The main features of such a detectors is the high position resolution - 30 micron in digital form and the high quantum efficiency (1-8% in the spectral interval of 220-140 nm). Additionally, they are spark- protected and can operate without any feedback problems at high gains, close to a streamer mode. In attempts to extend the sensitivity of RPCs to longer wavelengths we have successfully tested the operation of the first sealed parallel-plate gaseous detectors with CsTe photocathodes. Finally, the comparison with other types of photosensitive detectors is given and possible fields of applications are identified., Comment: Presented at the 5th International Workshop on RICH detectors Playa del Carmen, Mexico, November 2004

Published
2005
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2. The development of gaseous detectors with solid photocathodes for low temperature

Author

Periale, L., Peskov, V., Iacobaeus, C., Francke, T., Lund-Jensen, B., Pavlopoulos, N., Picchi, P., and Pietropaolo, F.

Subjects
Physics - Instrumentation and Detectors
Abstract

There are several applications and fundamental research areas which require the detection of VUV light at cryogenic temperatures. For these applications we have developed and successfully tested special designs of gaseous detectors with solid photocathodes able to operate at low temperatures: sealed gaseous detectors with MgF2 windows and windowless detectors. We have experimentally demonstrated, that both primary and secondary (due to the avalanche multiplication inside liquids) scintillation lights could be recorded by photosensitive gaseous detectors. The results of this work may allow one to significantly improve the operation of some noble liquid gas TPCs., Comment: Presented at the X Vienna Conference on Instumentation, Vienna, February 2004

Published
2004
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3. Polymer and magnetic nanoparticle composites with tunable magneto-optical activity: role of nanoparticle dispersion for high verdet constant materials

Author

Pavlopoulos, N. G., primary, Kang, K. S., additional, Holmen, L. N., additional, Lyons, N. P., additional, Akhoundi, F., additional, Carothers, K. J., additional, Jenkins, S. L., additional, Lee, T., additional, Kochenderfer, T. M., additional, Phan, A., additional, Phan, D., additional, Mackay, M. E., additional, Shim, I. B., additional, Char, K., additional, Peyghambarian, N., additional, LaComb, L. J., additional, Norwood, R. A., additional, and Pyun, J., additional

Published
2020
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5. Decisions taken at the 55th meeting held on 30 October 2001

Author

Ceccucci, A, Kekelidze, V, Zucchelli, P, Altarelli, Guido, Détraz, C, Heinz, U, Wyss, C, Bialkowska, H, Bobisut, F, Brock, I, Dalla Torre, S, De Jong, M, de Roeck, A, Déclais, Y, Delahaye, J P, Fernández, E, Forte, S, Forty, R W, Grafström, P, Hauschild, M, Knobloch, J, Königsmann, K C, Kühn, W, Magnon, A, Pavlopoulos, N, Pich, A, Riunaud, J P, Taureg, H, Videau, I, and Websdale, D M

Subjects
Detectors and Experimental Techniques
Published
2001

6. Decisions taken at the 51st meeting held on 23 January 2001

Author

Landua, R, Gabrielse, G, Hayano, R, Bressani, Tullio, Eggert, K, Bialkowska, H, Bobisut, F, Braunschweig, W, Brock, I, Cavalli-Sforza, M, Dalla Torre, S, De Jong, M, de Roeck, A, Delahaye, J P, Détraz, C, Fernández, E, Forty, R W, Goggi, G, Grafström, P, Hauschild, M, Hübner, K, Köne, B, Königsmann, K C, Kühn, W, Magnon, A, May, J, Norton, A, Pavlopoulos, N, Pennington, M, Pich, A, Riunaud, J P, Ruf, T, Taureg, H, and Websdale, D M

Subjects
Detectors and Experimental Techniques
Published
2001

7. Decisions taken at the 50th meeting held on 31 October 2000

Author

Linssen, L, Fischer, H G, Gazdzicki, M, Lodi-Rizzini, E, Bobisut, F, Cavalli-Sforza, M, Braunschweig, W, Dalla Torre, S, Déclais, Y, Delahaye, J P, Détraz, C, Forty, R W, Goggi, G, Grafström, P, Heinz, U, Knobloch, J, Köne, B, Königsmann, K C, Kühn, W, Magnon, A, Myers, S, Pavlopoulos, N, Pennington, M, Riunaud, J P, Ruf, T, Taureg, H, Websdale, D M, and Zalewska-Bak, A

Subjects
Detectors and Experimental Techniques
Published
2000

8. Decisions taken at the 49th meeting held on 5 and 6 September 2000

Author

Rubbia, Carlo, Kodama, K, Migliozzi, P, Strolin, P, Nemenov, L, Bobisut, F, Cavalli-Sforza, M, Dalla Torre, S, Déclais, Y, Détraz, C, Forty, R W, Grafström, P, Heinz, U, Hübner, K, Knobloch, J, Köne, B, Königsmann, K C, Kühn, W, Magnon, A, Maiani, Luciano, May, J, Myers, S, Pavlopoulos, N, Pennington, M, Pich, A, Riunaud, P, Ruf, T, Taureg, H, Voss, R, and Zalewska-Bak, A

Subjects
Detectors and Experimental Techniques
Published
2000

9. Decisions taken at the 48th meeting held on 23 May 2000

Author

Bradamante, Franco, Fischer, H G, Kirkby, Jasper, Bobisut, F, Braunschweig, W, Cavalli-Sforza, M, Déclais, Y, de Roeck, A, Détraz, C, Goggi, G, Grafström, P, Heinz, U, Köne, B, Königsmann, K C, Kühn, W, Magnon, A, Pavlopoulos, N, Pennington, M, Pich, A, Riunaud, P, Ruf, T, Taureg, H, Websdale, D M, and Zalewska-Bak, A

Subjects
Detectors and Experimental Techniques
Published
2000

10. Decisions taken at the 47th meeting held on 28 and 29 March 2000

Author

Wessels, J, Seyboth, P, Kluberg, L, Klingenberg, R, Hill, J, Manzari, V, Lourenço, C, Bobisut, F, Braunschweig, W, Cavalli-Sforza, M, Dalla Torre, S, Déclais, Y, Delahaye, J P, de Roeck, A, Détraz, C, Forty, R W, Goggi, G, Grafström, P, Heinz, U, Hübner, K, Knobloch, J, Köne, B, Königsmann, K C, Kühn, W, Magnon, A, May, J, Myers, S, Pavlopoulos, N, Pennington, M, Pich, A, Ruf, T, Taureg, H, Websdale, D M, and Zalewska-Bak, A

Subjects
Detectors and Experimental Techniques
Published
2000

11. Decisions taken at the 46th meeting held on 25 January 2000

Author

Maury, S, Landua, R, Gabrielse, G, Hayano, R, Wahl, H, Ceccucci, A, Kekelidze, V, May, J, Bobisut, F, Ruf, T, Wagner, C, Bagnaia, P, Braunschweig, W, Cashmore, R, Cavalli-Sforza, M, Dalla Torre, S, Déclais, Y, Delahaye, J P, de Roeck, A, Détraz, C, Forty, R W, Goggi, G, Grafström, P, Heinz, U, Hübner, K, Knobloch, J, Köne, B, Königsmann, K C, Kühn, W, Magnon, A, Myers, S, Pavlopoulos, N, Pennigton, M, Pich, A, Riunaud, J P, Stachel, J, Taureg, H, Tyndel, M, Websdale, D M, and Zalewska-Bak, A

Subjects
Detectors and Experimental Techniques
Published
2000

12. Decisions taken at the 45th meeting held on 1 December 1999

Author

Velasco, M, Nemenov, L, Zioutas, K, Dydak, F, Bagnaia, P, Cavalli-Sforza, M, Dalla Torre, S, de Roeck, A, Déclais, Y, Détraz, C, Forty, R W, Grafström, P, Heinz, U, Hübner, K, Kissler, Karl Heinz, Köne, B, Königsmann, K C, Kühn, W, Magnon, A, Maiani, Luciano, Pennigton, M, Pich, A, Riunaud, J P, Robertson, L, Ruf, T, Simon, D, Taureg, H, Tsesmelis, E, Voss, R, Wagner, C, Wahl, H, Websdale, D M, Zalewska-Bak, A, Braunschweig, W, Pavlopoulos, N, Stachel, J, and Tyndel, M

Subjects
Detectors and Experimental Techniques
Published
1999

13. Decisions taken at the 44th meeting on 14 September 1999

Author

Zucchelli, P, Camilleri, L, Loverre, P, Rubbia, Carlo, BarbariG, Rubbia, André, Ereditato, A, Nakamura, M, Bagnaia, P, Braunschweig, W, Cavalli-Sforza, M, Dalla Torre, S, de Roeck, A, Déclais, Y, Détraz, C, Forty, R W, Goggi, G, Grafström, P, Heinz, U, Hübner, K, Kissler, Karl Heinz, Königsmann, K C, Kühn, W, Maiani, Luciano, May, J, Pavlopoulos, N, Pennington, M, Pich, A, Riunaud, J P, Robertson, L, Ruf, T, Simon, D, Stachel, J, Tsesmelis, E, Wagner, C, Zalewska-Bak, A, Köne, B, Magnon, A, Tyndel, M, and Websdale, D M

Subjects
Detectors and Experimental Techniques
Published
1999

14. Decisions taken at the 43rd meeting on 25 May 1999

Author

Revol, J P, Hughes, V, Windmolders, R, Paul, S, Bagnaia, P, Dalla Torre, S, de Roeck, A, Déclais, Y, Détraz, C, Forty, R W, Grafström, P, Heinz, U, Hübner, K, Kissler, Karl Heinz, Köne, B, Königsmann, K C, Kühn, W, Magnon, A, May, J, McIntosh, A, Norton, A, Pavlopoulos, N, Pennington, M, Pich, A, Riunaud, J P, Ruf, T, Simon, D, Stachel, J, Tsesmelis, E, Websdale, D M, and Zalewska-Bak, A

Subjects
Detectors and Experimental Techniques
Published
1999

15. Decisions taken at the 42nd meeting on 30 March 1999

Author

Debu, P, Nolte, E, Ragazzi, S, Pavlopoulos, N, Bagnaia, P, Cavalli-Sforza, M, Dalla Torre, S, de Roeck, A, Déclais, Y, Détraz, C, Forty, R W, Heinz, U, Hübner, K, Kissler, Karl Heinz, Köne, B, Königsmann, K C, Kühn, W, Magnon, A, Maiani, Luciano, May, J, Pennigton, M, Pich, A, Riunaud, J P, Robertson, L, Ruf, T, Stachel, J, Tsesmelis, E, Voss, R, Wagner, C, and Zalewska-Bak, A

Subjects
Detectors and Experimental Techniques
Published
1999

16. Decisions taken at the 41st meeting on 19-20 January 1999

Author

Seyboth, P, Kluberg, L, Hill, J C, Antinori, F, Chehab, R, Bagnaia, P, Blaisot, J P, Braunschweig, W, Cavalli-Sforza, M, Dalla Torre, S, de Roeck, A, Déclais, Y, Détraz, C, Forty, R W, Grafström, P, Heinz, U, Hübner, K, Kissler, Karl Heinz, Köne, B, Königsmann, K C, Kühn, W, Landua, R, Magnon, A, Maiani, Luciano, May, J, Pavlopoulos, N, Ristori, L, Riunaud, J P, Robertson, L, Ruf, T, Simon, D, Stachel, J, Tsesmelis, E, Voss, R, Wagner, C, Websdale, D M, Wilquet, G, and Zalewska-Bak, A

Subjects
Detectors and Experimental Techniques
Published
1999

17. Decisions taken at the 39th meeting on 2 September 1998

Author

Uggerhøj, Erik, Velasco, M, Rubbia, Carlo, Pavlopoulos, N, Wigmans, R, Giomataris, Ioanis, Bagnaia, P, Blaizot, J P, Braunschweig, W, Cavalli-Sforza, M, de Roeck, A, Déclais, Y, Drijard, Daniel, Foà, L, Goggi, G, Hübner, K, Kissler, Karl Heinz, Köne, B, Königsmann, K C, Pich, A, Ristori, L, Riunaud, J P, Simon, D, Stachel, J, Tsesmelis, E, Tyndel, M, Websdale, D M, Wilquet, G, and Zalewska-Bak, A

Subjects
Detectors and Experimental Techniques
Published
1998

18. The development of gaseous detectors with solid photocathodes for low-temperature applications

Author

Periale, L., Peskov, Vladimir, Iacobaeus, C., Francke, T., Lund-Jensen, Bengt, Pavlopoulos, N., Picchi, P., Pietropaolo, F., Periale, L., Peskov, Vladimir, Iacobaeus, C., Francke, T., Lund-Jensen, Bengt, Pavlopoulos, N., Picchi, P., and Pietropaolo, F.

Abstract

There are several applications and studies in fundamental research, which require the detection of VUV light at cryogenic temperatures. For these applications, we have developed and successfully tested special designs of gaseous detectors with solid photocathodes able to operate at low temperatures: sealed gaseous detectors with MgF2 windows and windowless detectors. We have experimentally demonstrated that both primary and secondary (due to the avalanche multiplication inside liquids) scintillation light can be recorded by photosensitive gaseous detectors. The results of this work may allow one to significantly improve the operation of some noble liquid TPCs., QC 20100525 QC 20110927. 10th International Vienna Conference on Instrumentation. Vienna, AUSTRIA. FEB 16-21, 2004

Published
2004
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21. Evaluation of various planar gaseous detectors with CsI photocathodes for the detection of primary scintillation light from noble gases

Author

Periale L., Peskov V., Carlson P., Iacobeause C., Francke T., Pavlopoulos N., Pietropaolo F., Sokolova T., Picchi P., Periale L., Peskov V., Carlson P., Iacobeause C., Francke T., Pavlopoulos N., Pietropaolo F., Sokolova T., and Picchi P.

Abstract

Noble gases and liquids are excellent scintillators and this opens a unique opportunity to directly detect the primary scintillation light produced in these media by photons or particles. This signal can be used for several purposes, for example as a start signal for TPCs or for particle's identification. Usually photomultipliers (PMs) are used for the detection of the scintillation light. In our previous work we have demonstrated that costly PMs could be replaced by gaseous detectors with CsI photocathodes. Such detectors have the same quantum efficiency as the best PMs but at the same time are cheap, simple and have high position and time resolutions. The aim of this work is to evaluate various planar type gaseous detectors with CsI photocathodes in order to choose the best one for the detection of the primary scintillation light from noble gases and liquids. © 2002 Elsevier Science B.V. All rights reserved.

22. Photoinduced Self-Assembly of Carbon Nitride Quantum Dots.

Author

Xing Z, Dong K, Pavlopoulos N, Chen Y, and Amirav L

Abstract

The study of nanocrystal self-assembly into superlattices or superstructures is of great significance in nanoscience. Carbon nitride quantum dots (CNQDs), being a promising new group of nanomaterials, however, have hardly been explored in their self-organizing behavior. Here we report of a unique irradiation-triggered self-assembly and recrystallization phenomenon of crystalline CNQDs (c-CNQDs) terminated by abundant oxygen-containing groups. Unlike the conventional self-assembly of nanocrystals into ordered superstructures, the photoinduced self-assembly of c-CNQDs resembles a "click reaction" process of macromolecules, in which the activated -OH and -NH 2 functional groups along the perimeters initiate cross-linking of adjacent QDs through a photocatalytic effect. Our findings unveil fundamental physiochemical features of CNQDs and open up new possibilities of manipulating carbon nitride nanomaterials via controlled assembly. Prospects for potential applications are discussed as well., (© 2021 Wiley-VCH GmbH.)

Published
2021
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