Professor Christopher Foot: Publications

HIGH-RESOLUTION LASER SPECTROSCOPY OF THE 1S-2S TRANSITION IN ATOMIC-HYDROGEN

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 3:8 (1986) P162-P162

Authors:

RG BEAUSOLEIL, B COUILLAUD, CJ FOOT, TW HANSCH, EA HILDUM, DH MCINTYRE

The Hydrogen Atom in a New Light

Chapter in Methods of Laser Spectroscopy, Springer Nature (1986) 163-173

Authors:

TW Hänsch, RG Beausoleil, U Boesl, B Couillaud, CJ Foot, EA Hildum, DH McIntyre

Continuous-wave two-photon spectroscopy of the 1S-2S transition in hydrogen.

Phys Rev Lett 54:17 (1985) 1913-1916

Authors:

CJ Foot, B Couillaud, RG Beausoleil, TW Hansch

CW Two-Photon Spectroscopy of Hydrogen 1s-2s and New Precision Measurements of Fundamental Constants

Chapter in Laser Spectroscopy VII, Springer Nature 49 (1985) 33-36

Authors:

CJ Foot, B Couillaud, RG Beausoleil, EA Hildum, DH McIntyre, TW Hänsch

Laser spectroscopy of calcium isotopes

Journal of Physics B: Atomic and Molecular Physics 17:11 (1984) 2197-2211

Authors:

CWP Palmer, PEG Baird, SA Blundell, JR Brandenberger, CJ Foot, DN Stacey, GK Woodgate

Abstract:

Improved measurements of isotope shifts in the 4s21S0-4s5s 1S0 transition of calcium are reported for the stable isotopes. A comparison with isotope shift measurements in other transitions by means of a King plot shows satisfactory agreement. Values of the changes in mean-square nuclear charge radius delta (r2) from a combined analysis of muonic isotope shifts and electron scattering data are used to separate the mass and field shifts in the optical lines. This procedure leads to values of delta (r2) for the calcium isotopes from 40Ca to 48Ca using all available high-precision data. The results for delta (r2)A,40 are 3.2(2.5), 215.3 (4.9), 125.4 (3.2), 283.2 (6.4), 118.8 (5.9), 124.2 (5.0), 5 (13) and -4.4(6.0)*10-3 fm2 for A=41 to 48 respectively. Values of the electronic factors relating the observed shifts of delta (r2) are deduced, and discussed in terms of configuration mixing in calcium.

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