Zobrazeno 1 - 10
of 90
pro vyhledávání: '"U. Ljungblad"'
Publikováno v:
Zeitschrift f�r Physik D Atoms, Molecules and Clusters. 42:263-266
The energies of the As− fine structure components 4p43P1 and 4p43P0 have been determined relative to the 4p43P2 ground state by using photodetachment electron spectroscopy. Fine structure splittings of ΔE(3P1 − 3P2) = 125(3) meV and ΔE(3P0 −
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d83fe117cabd7bb2885cce21926c2765
https://doi.org/10.1007/s004600050365
https://doi.org/10.1007/s004600050365
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 29:3017-3022
Measurements of the photodetachment cross section of have been performed in the vicinity of the threshold, with photon energies ranging from 5.23 - 6.04 eV. The experimental cross section is nearly constant throughout this energy region, in marked co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d60cd5632b15eab902291c3c9b9ee786
https://doi.org/10.1088/0953-4075/29/14/014
https://doi.org/10.1088/0953-4075/29/14/014
Autor:
D. J. Pegg, Eva Lindroth, U. Berzinsh, U. Ljungblad, G. Haeffler, A. E. Klinkmüller, Dag Hanstorp
Publikováno v:
Physical Review Letters. 74:4795-4798
We report on the first observation of resonance structure in the total cross section for the photodetachment of ${\mathrm{Li}}^{\ensuremath{-}}$. The structure arises from the autodetaching decay of doubly excited ${1P}^{o}$ states of ${\mathrm{Li}}^
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7408813d71ae7f78fa59ec136ccce2e7
https://doi.org/10.1103/physrevlett.74.4795
https://doi.org/10.1103/physrevlett.74.4795
Publikováno v:
Defect and Diffusion Forum. :327-334
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccc0dee2aa2f54f56bbc60f1a6c639e6
https://doi.org/10.4028/www.scientific.net/ddf.66-69.327
https://doi.org/10.4028/www.scientific.net/ddf.66-69.327
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 79:159-161
A new ion beam apparatus, designed for collinear photodetachment experiments, has been constructed. Negative ions are formed on a surface ionizer, mass selected in a sector magnet and directed into a field-free region where they are merged with a las
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10132ab9d27167f64b4e5f3bc1859af6
https://doi.org/10.1016/0168-583x(93)95313-t
https://doi.org/10.1016/0168-583x(93)95313-t
Autor:
U. Ljungblad, Dag Hanstorp, A. E. Klinkmüller, Ann-Marie Mårtensson-Pendrill, M. Gustafsson, U. Berzinsh
The specific mass shift in the electron affinity between ^{35}Cl and ^{37}Cl 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 pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b2ff4ac287f4a0c93731a26d7096a6d
Autor:
I. Yu. Kiyan, U. Berzinsh, Andreas E. Klinkmueller, D. J. Pegg, Dag Hanstorp, G. Haeffler, U. Ljungblad
We present the results of experimental studies of photon-negative ion interactions involving the dynamics of two electrons. Resonances associated with doubly excited states of Li^- and He^- have been observed using laser photodetachment spectroscopy.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54e34a3091320eae3c8cea87e9f1f8d5
https://doi.org/10.1016/s0065-3276(08)60514-6
https://doi.org/10.1016/s0065-3276(08)60514-6
Publikováno v:
AIP Conference Proceedings.
Negative ions are especially sensitive to electron correlation since in these loosely bound systems the electron-electron interaction can become comparable to or dominate the electron-core interaction. This statement is particularly true in the case
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8a447bb46a85376d67cf317603f8bd9
https://doi.org/10.1063/1.52155
https://doi.org/10.1063/1.52155
Publikováno v:
Physical review letters. 77(18)
We have investigated doubly excited states in ${\mathrm{Li}}^{\ensuremath{-}}$ by measuring the relative partial cross section for photodetaching the ${\mathrm{Li}}^{\ensuremath{-}}$ ion via the $\mathrm{Li}(3s){+e}^{\ensuremath{-}}(\ensuremath{\vare
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::170b3cd7fb0690501e8a4a2971238604
https://pubmed.ncbi.nlm.nih.gov/10062299
https://pubmed.ncbi.nlm.nih.gov/10062299
Autor:
D. J. Pegg, W. D. Brandon, U. Ljungblad, Jeff Thompson, J. Dellwo, D. H. Lee, Dag Hanstorp, C.Y. Tang, G.D. Alton
Publikováno v:
Physical review. A, Atomic, molecular, and optical physics. 51(5)
Cross sections for photodetaching an electron from a B{sup {minus}} ion have been determined at photon energies of 1.871 and 2.077 eV. A crossed laser--ion-beam apparatus was used to determine the cross sections of B{sup {minus}} relative to those of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f09185c586c937f0c9649f5d18b5cde1
https://pubmed.ncbi.nlm.nih.gov/9912108
https://pubmed.ncbi.nlm.nih.gov/9912108