Calculation of isotope shifts and relativistic shifts in CI, CII, CIII and CIV

Details Calculation of isotope shifts and relativistic shifts in CI, CII, CIII and CIV Calculation of isotope shifts and relativistic shifts in CI, CII, CIII and CIV

2005-09-30

arxiv.org/abs/physics/0509253v1

Phys.Rev.A73:012504,2006

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevA.73.012504

We present an accurate ab initio method of calculating isotope shifts and relativistic shifts in atomic spectra. We test the method on neutral carbon and three carbon ions. The relativistic shift of carbon lines may allow them to be included in analyses of quasar absorption spectra that seek to measure possible variations in the fine structure constant, alpha, over the lifetime of the Universe. Carbon isotope shifts can be used to measure isotope abundances in gas clouds: isotope abundances are potentially an important source of systematic error in the alpha-variation studies. These abundances are also needed to study nuclear reactions in stars and supernovae, and test models of chemical evolution of the Universe.

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