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001-es BibID:BIBFORM085741
Első szerző:Angeli István (fizikus)
Cím:Possible improvements in the derivation of - from optical isotope shifts / Angeli István
Dátum:2003
Megjegyzések:It is shown that writing the correction factor K in the proper form, the value of ?r2 derived from the optical isotope shift may be made more reliable. Instead of the generally used parabolic Z dependence, the quantity 1? K depends primarily on the actual slope ?r2/?A, which may vary considerably from one isotope pair to another. This slope dependence is illustrated first for a spherical uniform nuclear charge distribution. Then, the case of the more realistic two-parameter Fermi charge distribution is investigated. Practical formulae of 1 ? K are given for both model distributions. The improved evaluation is especially important in cases where ?r2 values are much lower or higher than the liquid drop value. In these cases the improvement in ?r2 values may lead to substantial changes in nuclear structure characteristics, e.g. in deformation parameters. Results are compared to those obtained by an alternative approach, the "two-parameter model" based on a deformed uniform distribution.
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
nuclear rms charge radii
isotope shifts in optical spectra
Megjelenés:Acta Physica Hungarica Series A, Heavy Ion Physics. - 17 (2003), p. 3-9. -
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