Výsledky vyhledávání

Electroproduction of ?+ mesons at forward and backward direction in the region of theD 13(1520) andF 15(1688) resonances

Autor: L. Köpke, H. Breuker, A. Samel, W. Mehnert, M. Rosenberg, R. Sauerwein, Volker D. Burkert, M. Leenen, G. Knop, U. Hartfiel, E. Ehses

Publikováno v: Zeitschrift f�r Physik C Particles and Fields. 13:113-117

We report on measurements of the reactionep→enπ+ in the region of theD 13(1520) andF 15(1688) resonances. At an invariant four-momentum transferq 2=0.3 (GeV/c)2 the outgoing pion was detected in the forward and backward directions. The values of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69ad956befabb7dc34845f2357fa1d0c
https://doi.org/10.1007/bf01547674

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Measurement of the polarization degree of accelerated polarized electrons at the 2.5 GeV synchrotron in Bonn for energies between 0.85 and 2 GeV

Autor: W. Paul, G. Knop, U. Hartfiel, D. Husmann, W. Brefeld, R. Sauerwein, M. Hofmann, E. Ehses, H. R. Schaefer, W. von Drachenfels, Volker D. Burkert, W. Mehnert, H.-D. Schablitzky

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 228:228-235

The polarization degree of accelerated longitudinally polarized electrons has been measured employing the spin dependence of the elastic electron-electron cross section. We observe strong depolarization as well as polarization flips in the neighbourh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e6f919e1354d1f4762e83b32facbd8f
https://doi.org/10.1016/0168-9002(85)90264-5

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Determination of from η-electroproduction at the S11(1535) resonance

Autor: A. Samel, Volker D. Burkert, Walter Dr. Hillen, G. Knop, R. Sauerwein, Ch. Nietzel, M. Leenen, Hermann Kolanoski, M. Rosenberg, H. Breuker, E. Ehses

Publikováno v: Physics Letters B. 74:409-412

We report on measurements of the reaction ep → epη in the region of the S 11 (1535) resonance. The experiment was done at an invariant four-momentum transfer q 2 = 0.4 (GeV/ c ) 2 at two different scattering angles for the outcoming electron ( θ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::65693dbf2d2d53bd3aac1af24c964200
https://doi.org/10.1016/0370-2693(78)90691-3

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Deuteron electrodisintegration in the Δ resonance region at a four-momentum transfer Q2 = 0.23 (GeV/c)2

Autor: M Marco Leenen, H.-D. Schablitzky, R. Sauerwein, J. Langen, Volker D. Burkert, G. Schnicke, Horst Breuker, Gmw Gerrit Kroesen, E. Ehses, A. Samel, W. Mehnert, G. Knop, U. Hartfiel

Publikováno v: Nuclear Physics A, 455(4), 641-652. Elsevier

We report on measurements on the reaction d(e, e'p)n in the invariant mass range of the final hadronic system 1.965 GeV ⩽ W ⩽ 2.335 GeV. At an average four-momentum transfer Q 2 = 0.23 (GeV/ c ) 2 the outgoing proton was detected at a c.m. angle

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8e54d0b8bff83514147286a35e263c5
https://research.tue.nl/en/publications/f3b6d310-877c-4658-8a92-a28c041a8330

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Acceleration of Polarized Electrons in the 2.5 GeV Synchrotron at Bonn

Autor: M. Hofmann, D. Husmann, H. R. Schaefer, W. Paul, W. von Drachenfels, W. Brefeld, Volker D. Burkert, E. Ehses, G. Knop

Publikováno v: IEEE Transactions on Nuclear Science. 26:3146-3148

Polarized electrons have been accelerated in a synchrotron for the first time. The experiments clearly state that acceleration of a polarized beam in a synchrotron is possible without loosing polarization at least up to 2 GeV. Strong depolarization i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50692f57eb85dc62cc22017241434e16
https://doi.org/10.1109/tns.1979.4329965

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Acceleration of polarized electrons in the 2,5 GeV synchrotron at Bonn

Autor: G. Knop, W. Paul, M Hofmann, Th.M. Müller, W. von Drachenfels, W. Brefeld, E. Ehses, D. Husmann, K. P. Crone, Volker D. Burkert, H. R. Schaefer

Publikováno v: AIP Conference Proceedings.

Polarized electrons have been accelerated for the first time in a synchrotron with the results that the polarization is maintained to a high degree up to 2.0 GeV. Strong depolarization only is observed in narrow energy bands due to imperfection and i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bd5dc20c7bcdcd713664da9ba0381ebb
https://doi.org/10.1063/1.31760

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