U. Berzinsh
Chalmers University of Technology
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Publication
Featured researches published by U. Berzinsh.
Physical Review A | 1995
U. Berzinsh; M. Gustafsson; Dag Hanstorp; A. E. Klinkmuller; U. Ljungblad; Ann-Marie Mårtensson-Pendrill
The specific mass shift in the electron affinity between
Physical Review Letters | 1995
U. Berzinsh; Gunnar Haeffler; Dag Hanstorp; A. E. Klinkmuller; Eva Lindroth; U. Ljungblad; Pegg Dj
^{35}\mathrm{Cl}
Physical Review Letters | 1995
U. Berzinsh; Gunnar Haeffler; Dag Hanstorp; A. Klinkmueller; Eva Lindroth; U. Ljungblad; D. J. Pegg
and
Physical Review A | 1997
A. E. Klinkmuller; Gunnar Haeffler; Dag Hanstorp; Igor Yu. Kiyan; U. Berzinsh; Christopher Wade Ingram; D. J. Pegg; J. R. Peterson
^{37}\mathrm{Cl}
European Physical Journal D | 1992
J. Persson; U. Berzinsh; T. Nilsson; M. Gustavsson
has been determined by tunable-laser photodetachment spectroscopy to be -0.51(14) GHz. The isotope shift was observed as a difference in the onset of the photodetachment process for the two isotopes. In addition, the electron affinity of Cl was found to be 29 138.59(22)
Journal of Physics B | 1998
A. E. Klinkmuller; Gunnar Haeffler; Dag Hanstorp; I Yu Kiyan; U. Berzinsh; D. J. Pegg
{\mathrm{cm}}^{\mathrm{\ensuremath{-}}1}
Physical Review A | 1997
A.E. Klinkmueller; Gunnar Haeffler; Dag Hanstorp; Igor Yu. Kiyan; U. Berzinsh; Christopher Wade Ingram; D. J. Pegg; J. R. Peterson
, giving a factor of 2 improvement in the accuracy over earlier measurements. Many-body calculations including lowest-order correlation effects demonstrate the sensitivity of the specific mass shift and show that the inclusion of higher-order correlation effects would be necessary for a quantitative description.
European Physical Journal D | 1996
Gunnar Haeffler; A. E. Klinkmuller; Jonas Rangell; U. Berzinsh; Dag Hanstorp
We report on the first observation of resonance structure in the total cross section for the photodetachment of Li^-. The structure arises from the autodetaching decay of doubly excited ^1P states of Li^- that are bound with respect to the 3p state of the Li atom. Calculations have been performed for both Li^- and H^- to assist in the identification of these resonances. The lowest lying resonance is a symmetrically excited intrashell resonance. Higher lying asymmetrically excited intershell states are observed which converge on the Li(3p) limit.
Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms | 1993
Dag Hanstorp; M. Gustafsson; U. Berzinsh; U. Ljungblad
We report on the first observation of resonance structure in the total cross section for the photodetachment of Li^-. The structure arises from the autodetaching decay of doubly excited ^1P states of Li^- that are bound with respect to the 3p state of the Li atom. Calculations have been performed for both Li^- and H^- to assist in the identification of these resonances. The lowest lying resonance is a symmetrically excited intrashell resonance. Higher lying asymmetrically excited intershell states are observed which converge on the Li(3p) limit.
Physical Review Letters | 1996
U. Ljungblad; Dag Hanstorp; U. Berzinsh; D. J. Pegg
A Feshbach resonance associated with the 1s3s4s ^{4}S state of He^{-} has been observed in the He(1s2s ^{3}S) + e^- (\epsilon s) partial photodetachment cross section. The residual He(1s2s ^{3}S) atoms were resonantly ionized and the resulting He^+ ions were detected in the presence of a small background. A collinear laser-ion beam apparatus was used to attain both high resolution and sensitivity. We measured a resonance energy E_r = 2.959 255(7) eV and a width \Gamma = 0.19(3) meV, in agreement with a recent calculation.
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