Zobrazeno 1 - 10
of 43
pro vyhledávání: '"N. Eklöw"'
Publikováno v:
Astronomy & Astrophysics. 409:781-786
The electron-ion recombination and electron-impact ionization of several astrophysically abundant C, N, O, and Ni ions have been investigated using the synchrotron storage ring CRYRING. The recombination rate coefficients predominanty used in the ana
Autor:
W. Shi, Håkan Danared, Alfred Müller, N Eklöw, S. Böhm, R. Schuch, N. R. Badnell, Stefan Schippers
Publikováno v:
Astronomy & Astrophysics. 405:1157-1162
The dielectronic recombination rate coefficient of $\ion{O}{vi}$ ions has been measured at the heavy ion storage ring cryring. The electron energy range covered all dielectronic recombination resonances attached to $\rm 2s \rightarrow 2p$ ($\Delta n=
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 36:2563-2577
Dielectronic recombination resonances of Ni17+ that form doubly excited states in Mg-like Ni were studied in the energy range up to 6.5 eV. We observed 3sel → 3pnl, 3dnl (Δn = 0) resonances and a single 3sel → 4s4p (Δn = 1) resonance in this en
Autor:
K.B. MacAdam, Håkan Danared, Stefan Schippers, W. Shi, S. Böhm, N Eklöw, Gordon H. Dunn, R. Schuch, N. Djurić, M. Fogel, Alfred Müller
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 205:370-373
Field-enhanced dielectronic recombination (DR) cross-sections differential in the main quantum number n have been measured for N4+ ions. The n-differential data were obtained at the heavy ion storage ring CRYRING by increasing the ion energy in two s
Publikováno v:
Physica Scripta. :357-361
We measured DR resonances in Lithium like Kr33+ in the energy range 3–14 eV. The absolute energy scale was determined within 30 meV and the relative energy scale (difference between states) to within 10 meV. Our results are in good agreement with c
Autor:
Manfred Grieser, Ulrich Schramm, Andreas Wolf, Alfred Müller, N Eklöw, A. Hoffknecht, M. Beutelspacher, S. Krohn, T. Bartsch, Peter Glans, D. Schwalm, M Tokman, Gerald Gwinner, G. Wissler, Eva Lindroth, Stefan Schippers, A. A. Saghiri
Publikováno v:
Scopus-Elsevier
Radiative recombination (inverse photoionization) is believed to be well understood since the beginning of quantum mechanics. Still, modern experiments consistently reveal excess recombination rates at very low electron-ion center-of-mass energies. I
Publikováno v:
Hyperfine Interactions. 127:251-255
The rate coefficient for recombination of D+ with low energy electrons has been measured at different magnetic fields in the interaction region of the electron cooler at CRYRING. It is found that the measured recombination rate coefficient is influen
Autor:
Håkan Danared, W. Zong, M. Pajek, Gerald Gwinner, R. Schuch, Peter Glans, Eva Lindroth, A. A. Saghiri, N Eklöw
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 154:97-101
Some recent new developments in dielectronic recombination (DR) measurements at heavy-ion storage rings are presented. A DR spectrum measured at CRYRING in Stockholm of F6+ is used to illustrate a few points regarding this kind of measurements. From
Autor:
S. Böhm, G.H. Dunn, N. R. Badnell, W Zong, W. Shi, R. Schuch, Stefan Schippers, Håkan Danared, Peter Glans, Alfred Müller, B Jelencovic, N Djuric, N Eklöw
Publikováno v:
ResearcherID
Within a series of measurements of the dielectronic recombination (DR) of lithium-like ions we have determined the enhancement of the recombination rate in the presence of crossed electric and magnetic fields for Ne7+ and O5+ ions. In both cases the
Autor:
Stefan Schippers, Alexander Wolf, Eva Lindroth, M Tokman, Peter Glans, R. Schuch, N Eklöw, Gerald Gwinner, A Hoffknecht, Dirk Schwalm, Alfred Müller
Publikováno v:
Physical Review A. 70
The electron-ion recombination spectrum of the Li-like Na8+ ion in the energy range 0.0–0.5 eV is presented. Experimental results obtained by storage-ring techniques are compared with a calculated ...