Antiprotonic helium

Autor: John Eades

Publikováno v: Physics World. 18:29-33

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f7c1eb0e6578ab0bdca7c87f3d143b68
https://doi.org/10.1088/2058-7058/18/10/34

Quenching of metastable antiprotonic helium atoms in collisions with deuterium molecules

Autor: T. Ishikawa, Toshimitsu Yamazaki, B. Juhász, Eberhard Widmann, Dezso Horvath, H. A. Torii, Jun Sakaguchi, John Eades, Ryugo S. Hayano, Masaki Hori, H. Yamaguchi

Publikováno v: The European Physical Journal D - Atomic, Molecular and Optical Physics. 18:261-266

Quenching of metastable antiprotonic helium atoms in collisions with deuterium molecules has been studied using laser spectroscopy at CERN's new Antiproton Decelerator facility. The quenching cross-sections of the states (n, l )= (39, 36), (39, 37),

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e87311d15ef340dc19c14f72f0db80b0
https://doi.org/10.1140/epjd/e20020046

Decay of hot nuclei formed with energetic antiprotons (PS208)

Autor: Frank Goldenbaum, Ye. S. Golubeva, P. Figuera, L. Pienkowski, J. Galin, John Eades, Jerzy Jastrzębski, B. Lott, T.v. Egidy, W. Schmid, P. Ziem, D. Hilscher, U. Jahnke, M. Morjean, D. Polster, Guntram Pausch, K. Gulda, H. Rossner, B. Quednau, A. S. Iljinov, W. Kurcewicz, A. Péghaire, S. Proschitzki, S. Schmid, W. Bohne, H. Fuchs

Publikováno v: Nuclear Physics A
Biennial conference on low energy antiproton physics 5
Biennial conference on low energy antiproton physics 5, Sep 1998, Villasimius, Italy. pp.269c-274c
Scopus-Elsevier

Energetic antiproton-nucleus interactions allow to build up thermal excitation energies exceeding 800 MeV in nuclei of masses close to 200. We found that for these high excitation energies the fission process still remains a very significant exit cha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76fea61ea38afed9f24cbfa4f1c53ade
https://doi.org/10.1016/s0375-9474(99)00212-2

Laser spectroscopy of metastable states in theυ=2cascade of antiprotonic3He

Autor: Mitsutaka Kumakura, Toshimitsu Yamazaki, Dezso Horvath, E. Widmann, T. Ishikawa, Isao Sugai, Hiroyuki Tamura, M. Hori, C. Maierl, T. von Egidy, N. Morita, John Eades, H. A. Torii, F. J. Hartmann, B. Ketzer, Randolf Pohl, Ryugo S. Hayano

Publikováno v: Physical Review A. 58:3604-3610

The pressure dependence of the metastable-state lifetimes in antiprotonic ${}^{3}\mathrm{He}$ atoms $\overline{p}{\ensuremath{-}}^{3}{\mathrm{He}}^{+}$ was studied using the recently observed laser resonance transition $(n,\mathcal{l})=(36,33)\ensure

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5ae5a56d6da2255b5feb58e8c5ac64ea
https://doi.org/10.1103/physreva.58.3604

Quenching of metastable states of antiprotonic helium atoms by collisions with H2 molecules

Autor: M. Hori, Eberhard Widmann, T. Yamazaki, H. A. Torii, John Eades, F. J. Hartmann, B. Ketzer, Isao Sugai, C. Maierl, Ryugo S. Hayano, Randolf Pohl, Mitsutaka Kumakura, T. Ishikawa, N. Morita, T. von Egidy, Dezso Horvath

Publikováno v: The Journal of Chemical Physics. 109:424-431

Laser resonance transitions between normally metastable states of antiprotonic helium atoms were induced making use of state dependent quenching effects caused by trace admixtures of \mbox{H$_2$}\ to the target helium gas. With this method of ``\mbox

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe52dac4afebe66932a3d60f9d295ce5
https://doi.org/10.1063/1.476579