Thesis (Ph.D) - University of Birmingham, School of Physics and Space Research, Faculty of Science.
|Statement||by Justin Cooke.|
present work provides a measurement of the hyperfine structure of 29Si and improves the accuracy of the 28SiSi isotope shift by almost two orders of magnitude, in addition to providing an isotope shift for 29Si. Hyperfine energy level splitting is a result of the . We have begun a systematic investigation of the isotope shift and hyperfine structure in refractory elements using both the DC and RF optogalvanic effect as detection. As a preliminary endeavor, we are obtining Doppler‐free measurements of the isotope shifts and 2 0 Ne and 2 2 Ne. Neon is the heaviest element considered to have a negligable nuclear volumn isotope chevreschevalaosta.com: P. A. Crowell, J. A. Ruff, F. A. Moscatelli. Measurements of isotope shifts and hyperfine structure in Ti II This book presents a summary of our observational knowledge of the behavior of all chemical elements identified in stars. Measurements of isotope shifts and hyperfine structure in Ti II Z Nouri, S D Rosner, R Li et al.-Fast-ion-beam laser-fluorescence measurements of oscillator strengths in the lanthanides R A Holt, R Li, R Chatelain et al.-Measurements of hyperfine structure in .
Oct 15, · The hyperfine structure (hfs) and isotope shift of the 4 f 7 6 s 2 8 S 7/2 –4 f 7 6 s 6 p 10 P 9/2 transition at nm have been measured. The hfs constants A and B of Eu and Eu have been determined for the upper state 4 f 7 6 s 6 p 10 P 9/2, and the hyperfine Cited by: 3. Laser optical spectroscopy on a thermal atomic beam has been performed on the 4 2 S sol1 2 −4 2 P 1 2 D 2 line of 38,39,41–47 K. Hyperfine structure constants and isotope shifts have been measured. Magnetic moments and changes in the mean square charge radii are chevreschevalaosta.com by: We have measured the isotope shifts of 87 transitions in Sm II in the nm spectral region and the magnetic-dipole and electric-quadrupole hyperfine constants of 13 low-lying even-parity metastable levels and 76 odd-parity levels. These results will be immediately applicable to stellar spectroscopy. A documentation of measurements done for Gadolinium is given in (1), (4), (5). First results for Samarium are presented and discussed in (3). Figures (1) and (2) show examples of measured isotope shifts and hyperfine splittings in the first resonant transition in Samarium.
Using fast-ion-beam laser-fluorescence spectroscopy (FIBLAS), we have measured the hyperfine structure (hfs) of 14 levels and an additional four transitions in Dy II and the isotope shifts (IS) of 12 transitions in the wavelength range of – nm. These Cited by: 2. May 11, · We have applied fast-ion-beam laser-fluorescence spectroscopy to measure the isotope shifts of 38 transitions in the wavelength range – nm and the hyperfine structures (hfs) of 22 levels in Ti II. The isotope shift and hfs measurements are the first for these transitions and levels. Two-step photoionization of an atomic beam and quadrupole mass analysis have been used for the precise measurement of the isotope shift between uranium isotopes and and the hyperfine structure of U. For the Å ground-state transition 15 hfs components were chevreschevalaosta.com by: Aug 01, · We have begun a systematic investigation of the isotope shift and hyperfine structure in refractory elements using both the DC and RF optogalvanic effect as detection. As a preliminary endeavor, we are obtining Doppler-free measurements of the isotope shifts and 2 0 Ne and 2 2 Ne. Neon is the heaviest element considered to have a negligable nuclear volumn isotope chevreschevalaosta.com: P. A. Crowell, J. A. Ruff, F. A. Moscatelli.