Half-Life and Magnetic Moment of the First Excited State in ^132I
Abstract
The half-life and the magnetic moment of the first excited state in ^132I are reported. There have been a long time confusion on the half-life measurements of the first excited state in ^132I. Several groups performed the lifetime measurements, but the reported values range from 1 ns to 7 ns. The only reported value of the magnetic moment for this state was measured by Singh, but their result should be treated as unreliable because the time-integral perturbed angular correlation technique (TIPAC), which requires the life time data of this state, was used in their measurement. From this point of view, the half-life and the magnetic moment of this state were measured. ^132I was obtained as the radioactive beam of ^132Te and ^132Sb from the newly developed RF-IGISOL (Radio Frequency IGISOL system) at Tohoku University. The half-life for this state was determined to be 1.120 ± 0.015 ns by a conventional coincidence technique with a pair of BaF2 detectors. The TDPAC measurement for the ^132I implanted kinematically into nickel was performed with the help of a strong hyperfine field at iodine site in nickel, and the magnetic moment of this state was determined to be μ=+ (2.06 ± 0.18)μN. The configuration of this state based on the present results will be discussed.
- Publication:
-
APS Meeting Abstracts
- Pub Date:
- October 2009
- Bibcode:
- 2009APS..HAW.CE005I