Upgraded DIRAC spectrometer at CERN PS for the investigation of ππ and πK atoms

Autor: K. Gritsay, A.V. Kuptsov, Carlos Marinas, V. Kruglov, A. Ryazantsev, Masaaki Kobayashi, Y. Yoshimura, A. Sidorov, V.I. Rykalin, P. Chliapnikov, Bernardo Adeva, Tomáš Trojek, D. Fluerasu, Claude Amsler, P. Prusa, A. Anania, A. I. Kulikov, J. Smolik, Yoshihisa Iwashita, M. Plo, M. Nikitin, P. Doskarova, S. Constantinescu, M. Gugiu, J. Saborido, J. Martincik, M. Hansroul, L. Afanasyev, G. Caragheorgheopol, M. Pentia, R. Lednicky, L. Nemenov, Armando Lanaro, J. Schacher, O.E. Gorchakov, A. Penzo, L. Kruglova, Z. Hons, Y. Allkofer, A. Romero Vidal, O. Ullaland, C. Ciocarlan, L. Tauscher, V. Karpukhin, T. Vrba, Masami Chiba, D. Dumitriu, M. Duma, M. Zhabitsky, V. Brekhovskikh, C. Guaraldo, T. Urban, A. Lamberto, V. Olchevskii, S.V. Trusov, S. Horikawa, Tomáš Čechák, S. Aogaki, A. Benelli, C. Detraz, E. Kulish, D. Drijard, A. Gorin, Fujio Takeutchi, V. Yazkov, J. Kluson, P. Zrelov, K. Okada, A. Dudarev, G.F. Rappazzo

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 839:52-85

The DIRAC spectrometer installed at CERN PS was upgraded in order to study simultaneously A2π and AπK atoms, namely the bound states of two π mesons, and of π and K mesons, respectively. The detector system can now accept a high intensity beam of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba172953d904337ecc6e80dbb96bf5cb
https://doi.org/10.1016/j.nima.2016.07.049

New preshower detector for the DIRAC experiment

Autor: V. Yazkov, D. Dumitriu, D. Fluerasu, M. Gugiu, S. Aogaki, M. Pentia

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 795:200-205

The Preshower (PSh) detector is a component of the DIRAC setup. It is designed to improve rejection efficiency of e-e+ pairs background in the {\pi}{\pi} and K{\pi} pair measurement. To increase the overall efficiency, a new two-layer structure scint

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8f3969721abfacc23e56ca87296578a
https://doi.org/10.1016/j.nima.2015.06.003

First πK atom lifetime and πK scattering length measurements

Autor: M. Nikitin, J. Saborido, E. Kulish, L. Afanasyev, A. Romero Vidal, V.I. Rykalin, D. Fluerasu, M. Zhabitsky, V. Karpukhin, M. Plo, L. Kruglova, P. Zrelov, A. Gorin, P. Doskarova, V. Kruglov, A. Anania, Claude Amsler, L. Nemenov, Y. Allkofer, M. Pentia, L. Tauscher, R. Lednicky, V. Yazkov, S. Constantinescu, O. Gorchakov, J. Schacher, C. Ciocarlan, T. Ponta, T. Vrba, Z. Hons, P. Chliapnikov, V. Olchevskii, K. Gritsay, C. Guaraldo, Masami Chiba, Fujio Takeutchi, T. Urban, S.V. Trusov, V. Brekhovskikh, Carlos Marinas, Masaaki Kobayashi, Bernardo Adeva, Yoshihisa Iwashita, A. Benelli, A. I. Kulikov, M. Gugiu, J. Smolik, D. Drijard, A. Lamberto, A. Dudarev, T. Trojek, A. Penzo, A.V. Kuptsov, S. Horikawa, D. Dumitriu, K. Okada, J. Kluson, A. Ryazantsev, J. Martincik, M. Hansroul, Y. Yoshimura, A. Sidorov, G.F. Rappazzo, M. Duma, Tomáš Čechák, Armando Lanaro, S. Aogaki, P. Prusa, S. Sugimoto

Publikováno v: Amsler, Claude; Schacher, Jürg (2014). First πK atom lifetime and πK scattering length measurements. Physics letters. B, 735, pp. 288-294. Elsevier 10.1016/j.physletb.2014.06.043
Physics Letters B

The results of a search for hydrogen-like atoms consisting of $\pi^{\mp}K^{\pm}$ mesons are presented. Evidence for $\pi K$ atom production by 24 GeV/c protons from CERN PS interacting with a nickel target has been seen in terms of characteristic $\p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b0f84d4206b31ac7b04b4f23cb89dd5
https://doi.org/10.1016/j.physletb.2014.06.043

Observation of π^{-}K^{+} and π^{+}K^{-} Atoms

Autor: B, Adeva, L, Afanasyev, Y, Allkofer, C, Amsler, A, Anania, S, Aogaki, A, Benelli, V, Brekhovskikh, T, Cechak, M, Chiba, P, Chliapnikov, P, Doskarova, D, Drijard, A, Dudarev, D, Dumitriu, D, Fluerasu, A, Gorin, O, Gorchakov, K, Gritsay, C, Guaraldo, M, Gugiu, M, Hansroul, Z, Hons, S, Horikawa, Y, Iwashita, V, Karpukhin, J, Kluson, M, Kobayashi, V, Kruglov, L, Kruglova, A, Kulikov, E, Kulish, A, Kuptsov, A, Lamberto, A, Lanaro, R, Lednicky, C, Mariñas, J, Martincik, L, Nemenov, M, Nikitin, K, Okada, V, Olchevskii, M, Pentia, A, Penzo, M, Plo, P, Prusa, G, Rappazzo, A, Romero Vidal, A, Ryazantsev, V, Rykalin, J, Saborido, J, Schacher, A, Sidorov, J, Smolik, F, Takeutchi, L, Tauscher, T, Trojek, S, Trusov, T, Urban, T, Vrba, V, Yazkov, Y, Yoshimura, M, Zhabitsky, P, Zrelov

Publikováno v: Physical review letters. 117(11)

The observation of hydrogenlike πK atoms, consisting of π^{-}K^{+} or π^{+}K^{-} mesons, is presented. The atoms are produced by 24 GeV/c protons from the CERN PS accelerator, interacting with platinum or nickel foil targets. The breakup (ionizati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::7ae8d0709b930913ab31f93c713f3939
https://pubmed.ncbi.nlm.nih.gov/27661682

Inner-shell vacancy production and multiple ionization effects in 0.1–1.75 MeV/u Mn, Fe, Co, Ni, Cu + Au, Bi collisions

Autor: I. Piticu, S Z Szilagyi, D. Fluerasu, M.M. Gugiu, T.A Dumitrescu, A. Enulescu, D.E. Dumitriu, C. Ciortea, S.E. Enescu

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 205:789-793

Vacancy production in 0.1–1.75 MeV/u Mn, Fe, Co, Ni, Cu + Au, Bi collisions has been studied by measuring integral inner-shell ionization cross-sections and mean outer-shell ionization probabilities at the Tandem accelerator of NIPNE, Bucharest. X-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5608eda98942d3c485cbf3086a466ae0
https://doi.org/10.1016/s0168-583x(03)00955-8