Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

Measurement of the s-2(1/2)-d-2(5/2) clock transition in a single yb-171(+) ion

Roberts, M. and Taylor, P. and Gateva-Kostova, S.V. and Clarke, R.B.M. and Rowley, W.R.C. and Gill, P. (1999) Measurement of the s-2(1/2)-d-2(5/2) clock transition in a single yb-171(+) ion. Physical Review A, 60 (4). pp. 2867-2872. ISSN 1094-1622

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Spectroscopy of the 411-nm transition in 171Yb+ has been performed and the feasibility of its use as an optical frequency standard has been demonstrated. The 2S1/2(F=0, mF=0)-2D5/2(F=2, mF=0) frequency, at zero-magnetic field, has been measured to be 729 487 779 566(153) kHz. This transition is free from the first-order Zeeman shift and has a measured second-order shift of +0.38(8) Hz/(μT)2. In addition, the hyperfine structure of the 2D5/2 level has been deduced by driving the other hyperfine components of the 411-nm transition, showing it to be inverted. The 2D5/2 hyperfine splitting, measured to be -191(2) MHz, implies an A factor of -63.6(7) MHz. These data taken in conjunction with previous work yield an isotope shift of ν171-ν172=+1317.1(1.3)MHz for this transition between the 171 and 172 isotopes.