Isotope Shifts ofKX Rays and Variations of Nuclear Charge Radii

Isotope Shifts in Atomic Spectra

“…Bhattacherjee et al (1969) obtained 55.7(4.3) meV while van Eijk and Schutte (1970) obtained 58.1(3.3) meV. In a few cases the uncertainty in the field shifts has been reduced to less than 2 meV: 124 , 116 Sn, 35.0(1.3) meV (Chesler and Boehm 1968); 142 , 14°C e, 51.5(1.9) meV (van Eijk and Visscher 1970); 116 , 11°C d, 28.7(1.3) meV . It should be stressed that the above uncertainties are experimental in origin.…”

“…Thus, insofar as M is approximately proportional to Z, the normal mass shift in Ka transitions is independent of Z. The specific mass shift has been evaluated using Vinti's method with Herman and Skillman wavefunctions by Chesler and Boehm (1968). They found it depended essentially on only the core electrons and so varied smoothly with Z.…”

“…The majority of the isotope shift measurements in x-ray spectra of electronic atoms have been carried out at the California Institute of Technology; their experimental methods have been described by Chesler and Boehm (1968) and Lee and Boehm (1973). Most of the remaining measurements have been carried out at the Delft University of Technology; their experimental methods have been described by van Eijk and Schutte (1970).…”

“…bResults from muonic x-ray energies . 'Results from isotope shifts in x-ray spectra of electronic atoms (Chesler and Boehm, 1968). …”

Nuclear spins, moments and charge radii of108?111Sn

“…Relativistic Dirac-Fock (DF) calculations by Fricke [24] give quantitatively the same result as the corrected nonrelativistic calculations. Chesler and Boehm have determined ~(r2)l~6'124=O.428 (14)fmZ from a K~ X ray transition [26]. The mass dependence of F along the investigated tin chain is less than 1% and can be neglected.…”