Optical isotope shift of172Hf (T 1/2=1.87 a)

Abstract

In the course of preparing experiments with 17Sm2Hf, optical isotope shifts for the stable Hf isotopes and for 172Hf were measured. For the rms nuclear charge radii we obtain {r2} 172 _ (re}l 7s = _ 0.242(16) fm 2.

First On-Line Laser Spectroscopy of Radioisotopes of a Refractory Element

“…"Semi-on-line" measurements have been performed on Pt isotopes, produced as daughters of the decay of Hg beams, most successfully using resonance ionization synchronized with pulsed laser desorption [3]. Further off-line spectroscopy on radioisotopes of Hf and on stable isotopes of Hf, Ta, and W has been achieved, using ion trap techniques [4,5] and ion-sputtering atomic beam sources [6], but no isotope shift measurements have previously been made on isotopes in the Pt and Zr regions produced directly in nuclear reactions. As a result, these areas of particular nuclear structural interest have largely been left unexplored.…”

Isotope shifts and hyperfine splitting in HfI changes in nuclear charge radii of stable isotopes and182Hf

“…Figure 2 displays the dependence of O(r 2) on the mass number A. The A region is extended by including the value of 6 (r 2) 172,~7s = _ 0.242(16) fm 2 from [22]. Combining our IS data for Ov ~8~ and Ov ~82'~8~ the change in ms nuclear charge radius of lS2Hf with respect to 17slrIf is found to be: ~ ~r 2) 182,178 = 0.123(6) fm 2.…”