Precision measurement of the 5 {sup 2}S{sub 1/2}- 4 {sup 2}D{sub 5/2} quadrupole transition isotope shift between {sup 88}Sr{sup +} and {sup 86}Sr{sup +}
- Los Alamos National Laboratory, Applied Modern Physics Group, MS D434, Los Alamos, New Mexico 87545, USA and Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States)
We present a high-precision measurement of the isotope shift of the narrow quadrupole-allowed 5 {sup 2}S{sub 1/2}- 4 {sup 2}D{sub 5/2} transition in {sup 86}Sr{sup +} relative to the most abundant isotope {sup 88}Sr{sup +}. This was accomplished using high-resolution laser spectroscopy of individual trapped ions, and the measured shift is {Delta}{nu}{sub meas}{sup 88,86}=570.281(4) MHz. We also tested a recently developed and successful method for ab initio calculation of isotope shifts in alkali-metal-like atomic systems against this measurement, and our initial result of {Delta}{nu}{sub calc}{sup 88,86}=457(28) MHz is also presented. While the measurement and the calculation are in broad agreement, there is a clear discrepancy between them, and we believe that the specific mass shift was underestimated in our calculation. Our measurement provides a stringent test for further refinements of theoretical isotope shift calculation methods for atomic systems with a single valence electron.
- OSTI ID:
- 21546758
- Journal Information:
- Physical Review. A, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevA.83.052509; (c) 2011 American Institute of Physics; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACCURACY
ALKALI METALS
CALCULATION METHODS
E2-TRANSITIONS
ELECTRONS
IONS
LASER SPECTROSCOPY
MHZ RANGE
RESOLUTION
SPECTRAL SHIFT
STRONTIUM 86
STRONTIUM 88
TRAPPING
VALENCE
ALKALINE EARTH ISOTOPES
CHARGED PARTICLES
ELEMENTARY PARTICLES
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
FERMIONS
FREQUENCY RANGE
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONS
METALS
MULTIPOLE TRANSITIONS
NUCLEI
SPECTROSCOPY
STABLE ISOTOPES
STRONTIUM ISOTOPES