Optical-Pumping Determination of the Nuclear Magnetic Moments of the Radioisotopes Mercury-193, -193m, -195m, and -1

Abstract

The technique of optical pumping has been used to determine the nuclear magnetic dipole moment of spin-T~, 4-h~3Hg, and the spin-~isomers, ].P-h B~Hg, 4P-h 5 Hg, and 24-h 9™Hg. Nuclear magnetic resonance was observed following orientation of the 6s2 1S& ground state. The results are (' p( =0.61763(18)p", )"' pl =1. 0416(3)pz,) i p) =1.0280(2)pz, and ) 9™p( =1. 0112(3)p», all without diamagnetic correction. Differential hfs anomalies, n, , have been calculated with respect to stable ' Hg with the use of the previously determined values of the magnetic dipole hfs interaction constants for the 6s6p P& level. We obtain 9 4' =p.pp54(27) ' '"/&9 =p.p1psy) '~/&9 =p p1p6(2), and ' ' g' =p.p1p5(@.

Spins, moments and charge radii in the isotopic series181Hg-191Hg

“…The magnetic moment of 193Hg has been reproduced with a (1 i x 3/2) 12 (2f5/2)o (3193/2) ~ configuration by Reiman and McDermott [5]. An alternative explanation in the same model has been given by Moskowitz et aL [3]. They explained magnetic moment and hfs anomaly of 193Hg and 2~ by a mixing of a (3193/2)3(3p1/2)O(2fs/2)4(li13/2) x and a (3 Pg/2) 1 (3 p~/2) 2 (2f 5/2) 4 (1 i s 3/2) x configuration with x --6 for 193Hg and x= 14 for 2mHg.…”

“…Since the shape of electronic wave functions near the origin is independent of the principal quantum number, the ck parameters of any optical transition can be related to those of X-rays by scaling them with the ratio of the corresponding changes of the electron [3]. e Second order hfs corrections are not applied to B factors.…”

“…14], 199mHg [I.15], whereas all the other data (on stable as well as on unstable isotopes) were obtained by standard optical spectroscopy like high resolution interferometry, levelcrossing, and optical pumping [2][3][4][5]. * Spanning now from 2~ to 181Hg, these data establish by far the most complete set of hfs and IS values collected for one element.…”

Determination of the isotope shift of115m Cd by a Zeeman scanning method

“…The linearly polarized light then induced an alignment of the 115mCd 1S o ground state. By orienting the static field H o at 45 ~ to the incoming light we were able to use the same beam for both pumping and monitoring, as was done in our previous experiments [1,21]. The difference is that here an alignment was produced, rather than an orientation.…”

“…The separated isotope, which was deposited on a thin aluminum foil as a result of the separation process, was distilled by successive steps into a 50 mm spherical quartz resonance vessel. The procedure followed that which has been employed in the production of mercury optical pumping cells [21] except that it was not necessary to use gold foil to hold the cadmium. Virtually all of the ~as"Cd on the aluminum foil was transferred to the cell.…”