Zobrazeno 1 - 10
of 39
pro vyhledávání: '"O. Uwira"'
Autor:
Dario Marcelo Mitnik, M. S. Pindzola, R. Becker, Alfred Müller, M. Kleinod, J. Linkemann, Alejandro Frank, W. Spies, S. Ricz, P. H. Mokler, L. Empacher, N. R. Badnell, N. Angert, Francis Robicheaux, O. Uwira
Publikováno v:
Physical Review A. 57:4365-4372
Dielectronic recombination cross sections for U{sup 28+} are calculated in the distorted-wave approximation and compared with measurements obtained using an electron-ion merged beams apparatus. Although the experiment covered energies between 0 and 4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c7798079bed5819e24a0e09d3660ba1
https://doi.org/10.1103/physreva.57.4365
https://doi.org/10.1103/physreva.57.4365
Autor:
C. Kozhuharov, T. Bartsch, O. Uwira, T. Winkler, W. Spies, F. Bosch, Alexander Wolf, Daniel Wolf Savin, M. Steck, A. A. Saghiri, William Graham, Zbigniew Stachura, G.H. Dunn, Th. Stöhlker, H. Knopp, R. Schuch, W. Zong, C. Brandau, H. Gao, Alfred Müller, A. Hoffknecht, H. Lebius, M. Schmitt, F. Nolden, D. R. DeWitt, Håkan Danared, P.H. Mokler, Dirk Schwalm, J. Doerfert, B. Franzke, Stefan Schippers, J.A. Tanis, J. Linkemann
Publikováno v:
Hyperfine Interactions. 114:229-235
New recombination experiments with merged cold beams of electrons and atomic ions have been carried out at the storage ring facilities TSR in Heidelberg, ESR in Darmstadt, and CRYRING in Stockholm. A brief overview is given on the recent activities i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c2a547889fd0a2e87834dcb7512aee3
https://doi.org/10.1023/a:1012643109911
https://doi.org/10.1023/a:1012643109911
Autor:
Stefan Schippers, M. Kleinod, S. Schennach, R. Becker, P. H. Mokler, M. Wagner, Alejandro Frank, Alfred Müller, A. Hoffknecht, O. Uwira, W. Spies, N. Angert
Publikováno v:
Hyperfine Interactions. 114:257-261
The origin of the widely observed enhancement of rates for electron-ion recombination at very low energies is still unknown. We investigated the recombination of Au25+ with free electrons in a merged-beams experiment at the UNILAC accelerator of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0f56025d98b16b6db2fcd4624cfc62a
https://doi.org/10.1023/a:1012651311728
https://doi.org/10.1023/a:1012651311728
Publikováno v:
Physical Review Letters. 78:4355-4358
The electric dipole intercombination decay of the 2s2p {sup 3}P{sup 0}{sub 1} level in the Be-like ion C{sup 2+} has been optically observed with ions circulating in a heavy-ion storage ring. The measured transition probability of (102.94{plus_minus}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9728aa7f3610cef592709441998beda1
https://doi.org/10.1103/physrevlett.78.4355
https://doi.org/10.1103/physrevlett.78.4355
Autor:
Daniel Wolf Savin, T. Bartsch, William Graham, A. Wolf, O. Uwira, J. Doerfert, R. Schuch, Alfred Müller, D. Schwalm, J. Linkemann, W. Zong, C. Brandau, H. Lebius, M. Schmitt
Publikováno v:
Hyperfine Interactions. 108:149-154
Recombination of Au49+, Au50+, and Au51+ ions has been studied at the TSR. With Au50+ ions a storage lifetime of only 2 to 4 s was observed with the magnetically expanded electron beam of the cooler at a density of ne = 107 cm-3. This short storage t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28d92efcda81ad22e7294554453ec0a5
https://doi.org/10.1023/a:1012694209176
https://doi.org/10.1023/a:1012694209176
Autor:
Ulrich Schramm, Alfred Müller, O. Uwira, T. Schüß ler, Dietrich Habs, Alexander Wolf, Dirk Schwalm, J. Linkemann
Publikováno v:
Hyperfine Interactions. 108:273-281
Spontaneous recombination of highly charged ions with free electrons in merged velocity matched electron and ion beams has been observed in earlier experiments to occur at rates significantly higher than predicted by theoretical estimates. To study t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23e734d96537ed6a312e41e934698a3a
https://doi.org/10.1023/a:1012671031466
https://doi.org/10.1023/a:1012671031466
Autor:
P. H. Mokler, O. Uwira, Christophor Kozhuharov, M. Steck, M. S. Pindzola, Alfred Müller, B. Franzke, W. Spies, T. Winkler
Publikováno v:
Hyperfine Interactions. 108:155-165
In two separate experiments at the ESR recombination of 230 MeV/u Bi80+ and 170 MeV/u U89+ ions was studied. The analysis of these experiments has been carried on in order to extract information about radiative recombination (RR) of very highly charg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f169afeb345dafc85794ecdee9844a1
https://doi.org/10.1023/a:1012646326014
https://doi.org/10.1023/a:1012646326014
Autor:
M. Kleinod, N. R. Badnell, C. Brandau, P. H. Mokler, T. Cramer, N. Angert, J. Linkemann, O. Uwira, Christophor Kozhuharov, J. Klabunde, R. Becker, Alfred Müller, Alejandro Frank, W. Spies
Publikováno v:
Hyperfine Interactions. 108:167-175
Recombination of multiply charged ions with electrons at very low relative energies has become a major topic of interest, due to the observation of rates which are enhanced beyond the expectations for radiative recombination. We present results for A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a13163b1c80699f7be680e73f13e4a6
https://doi.org/10.1023/a:1012698310084
https://doi.org/10.1023/a:1012698310084
Autor:
N. R. Badnell, A. Wolf, J. Linkemann, G. Hofmann, Michael S. Pindzola, J. Kenntner, D. Schwalm, W. Spies, O. Uwira, A. Liedtke, Alejandro Frank, E. Salzborn, D. Habs, Alfred Müller
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 98:154-157
Absolute rates and cross sections for dielectronic recombination and ionization of Na-like Fe15+ (1s22s22p63s) ions were measured at electron impact energies between 0 and 1030 eV using the Heidelberg heavy ion storage ring TSR with the cooling devic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5f1d7b8e97b1c063dd77ab0403b814d
https://doi.org/10.1016/0168-583x(95)00095-x
https://doi.org/10.1016/0168-583x(95)00095-x
Towards a precision spectroscopy of very highly charged ions by employing dielectronic recombination
Autor:
Alfred Müller, Christophor Kozhuharov, P. H. Mokler, L. Empacher, O. Uwira, J. Linkemann, Alejandro Frank, W. Spies, F. Bosch, B. Franzke, Markus Steck, O. Klepper
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 98:158-161
The measurement of dielectronic recombination (DR) with high energy resolution provides a unique tool for precision spectroscopy of intermediate doubly excited states of very highly charged ions. One of our experimental goals at the experimental stor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92a1e08560181605487904a3497de31e
https://doi.org/10.1016/0168-583x(95)00096-8
https://doi.org/10.1016/0168-583x(95)00096-8