Zobrazeno 1 - 10
of 36
pro vyhledávání: '"H. P. Wirtz"'
Autor:
H. P. Wirtz, Jörg Grunewald
Publikováno v:
Zeitschrift für Angewandte Entomologie. 85:425-435
Artificial blood feeding of some African and palaearctic simuliids (Diptera) One of the main difficulties of laboratory colonization of Simuliidae, including the main vectors of human onchocerciasis, has been to persuade the females to feed under lab
Autor:
H. P. Wirtz
Publikováno v:
Zeitschrift für Angewandte Entomologie. 99:377-393
Nutrition and reproduction in Palaearctic Blackflies (Dipt., Simuliidae). 2. Blood feeding of Boophthora erythrocephala De Geer and Wilhelmia lineata Meigen through membranes Laboratory-emerged-♀♀ of Boophthora erythrocephala and Wilhelmia lineat
Autor:
H. P. Wirtz, L. C. Smith, Stefan Ritt, Barry Ritchie, K.O.H. Ziock, W. Bertl, E. Frlež, Roland Horisberger, V. Baranov, V. V. Sidorkin, N. A. Kuchinskii, N. V. Khomutov, Wenhui Li, TM Sakhelashvili, Zviad Tsamalaidze, R. Schnyder, D. A. Mzhaviya, N. P. Kravchuk, V. Karpukhin, T. Kozlowski, I. Supek, R. C. Minehart, W. A. Stephens, Dinko Pocanic, S. M. Korenchenko, A. S. Korenchenko, A. M. Rozhdestvenskii, V. A. Kalinnikov
Publikováno v:
Instruments and Experimental Techniques. 48:168-176
The construction and characteristics of the PIBETA spectrometer are described. This spectrometer is designed to implement a program of precise measurement of pion β decay π+ → π0 + e + + νe at the Paul Scherrer Institute (Switzerland). A spheri
Autor:
M. Bychkov, T. Kozlowski, A. S. Korenchenko, J. E. Koglin, TM Sakhelashvili, Yu. Sh. Bagaturia, W. Bertl, P. L. Slocum, R. C. Minehart, N. V. Khomutov, Wenhui Li, D. Mzhavia, Dieter Renker, Zviad Tsamalaidze, K.O.H. Ziock, Dinko Pocanic, E. Frlež, W. A. Stephens, V. A. Kalinnikov, N. A. Kuchinsky, B. Krause, R. Frosch, R. Schnyder, Roland Horisberger, V. Karpukhin, H. Obermeier, Ch. Brönnimann, Barry Ritchie, D. W. Lawrence, V. Baranov, Yang Wang, Th. Flügel, N. Soić, S. M. Korenchenko, H. P. Wirtz, N. P. Kravchuk, I. Supek, M. Daum, S. Ritt, Ketevi Assamagan, L. C. Smith, B. A. VanDevender, V. V. Sidorkin, J. F. Crawford
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 526:300-347
We describe the design, construction and performance of the PIBETA detector built for the precise measurement of the branching ratio of pion beta decay, pi+ -> pi0 e+ nu, at the Paul Scherrer Institute. The central part of the detector is a 240-modul
Autor:
S. Scheu, Dinko Pocanic, Z. Tsamalaidze, D. Mzhavia, H. P. Wirtz, Stefan Ritt, A. S. Korenchenko, A. M. Rozhdestvensky, B. A. VanDevender, N. V. Khomutov, I. Supek, U. Straumann, N. P. Kravchuk, V. A. Kalinnikov, W. Bertl, S. M. Korenchenko, M. Korolija, Yang Wang, A. van der Schaaf, M. Bychkov, E. Frlež, Peter Robmann, Wenhui Li, O. A. Rondon-Aramayo, T. Kozlowski, Yu. M. Bystritsky, V. A. Baranov, N. A. Kuchinsky, D. Mekterović, E. P. Velicheva, V. P. Volnykh, TM Sakhelashvili
Publikováno v:
Physical Review Letters. 103
We have measured the ${\ensuremath{\pi}}^{+}\ensuremath{\rightarrow}{e}^{+}\ensuremath{\nu}\ensuremath{\gamma}$ branching ratio over a wide region of phase space, based on a total of 65 460 events acquired using the PIBETA detector. Minimum-${\ensure
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 387:211-213
At PSI a proton beam with 84 MeV kinetic energy is used in order to investigate the uniformity of light collection and the light yield with avalanche photodiode (APD) and photomultiplier (PMT) readout. New types of Hamamatsu APDs have been coupled to
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 387:202-204
New types of Hamamatsu avalanche photodiodes (APD) have been investigated for the readout of PbWO4 crystals. The results presented cover quantum efficiency measurements of APD prototype A-E, which is passivated by a SiO2 layer or a Si3N4 layer, befor
Autor:
L. C. Smith, K.O.H. Ziock, N. P. Kravchuk, B. A. VanDevender, J. F. Crawford, D. Mzhavia, V. V. Sidorkin, N. A. Kuchinsky, E. Frlež, A. M. Rozhdestvensky, S. M. Korenchenko, N. V. Khomutov, Yang Wang, I. Supek, W. Bertl, M. Bychkov, Barry Ritchie, Dinko Pocanic, R. C. Minehart, Zviad Tsamalaidze, Stefan Ritt, M. Daum, Wenhui Li, A. S. Korenchenko, V. A. Baranov, T. Kozlowski, Ch. Brönnimann, H. P. Wirtz
Publikováno v:
Physical Review Letters. 93
Using a large acceptance calorimeter and a stopped pion beam we have made a precise measurement of the rare ${\ensuremath{\pi}}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{e}^{+}\ensuremath{\nu}$ (${\ensuremath{\pi}}_{\ensuremath{\beta}}$) deca
Autor:
V. Baranov, N. A. Kuchinsky, Zviad Tsamalaidze, A. S. Korenchenko, Stefan Ritt, N. V. Khomutov, N. P. Kravchuk, Emil Frlez, L. C. Smith, K.O.H. Ziock, V. V. Sidorkin, M. Bychkov, W. Bertl, E. P. Velicheva, H. P. Wirtz, Barry Ritchie, D. Mzhavia, B. A. VanDevender, R. C. Minehart, S. M. Korenchenko, A. M. Rozhdestvensky, Dinko Pocanic, Wenhui Li, T. Kozlowski, I. Supek, Yang Wang
Publikováno v:
Physical Review Letters. 93
We have studied radiative pion decays pi(+)-->e(+)nugamma in three broad kinematic regions using the PIBETA detector and a stopped pion beam. Based on Dalitz distributions of 41 601 events we have evaluated absolute pi-->enugamma branching ratios in
Autor:
E, Frlez, D, Pocanić, V A, Baranov, W, Bertl, M, Bychkov, N V, Khomutov, A S, Korenchenko, S M, Korenchenko, T, Kozlowski, N P, Kravchuk, N A, Kuchinsky, W, Li, R C, Minehart, D, Mzhavia, B G, Ritchie, S, Ritt, A M, Rozhdestvensky, V V, Sidorkin, L C, Smith, I, Supek, Z, Tsamalaidze, B A, VanDevender, E P, Velicheva, Y, Wang, H-P, Wirtz, K O H, Ziock
Publikováno v:
Physical review letters. 93(18)
We have studied radiative pion decays pi(+)--e(+)nugamma in three broad kinematic regions using the PIBETA detector and a stopped pion beam. Based on Dalitz distributions of 41 601 events we have evaluated absolute pi--enugamma branching ratios in th