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Full-Text Articles in Physical Sciences and Mathematics
Gamma-Gamma Angular Correlation Studies For 142ce, A. Wolf, C. Chung, W. B. Walters, R. L. Gill, M. Shmid, R. E. Chrien, Graham F. Peaslee
Gamma-Gamma Angular Correlation Studies For 142ce, A. Wolf, C. Chung, W. B. Walters, R. L. Gill, M. Shmid, R. E. Chrien, Graham F. Peaslee
Faculty Publications
Gamma-gamma angular correlations for several cascades in 142Ce were measured using a four-detector system. In a recent publication the level at 1219 keV was assigned 22+ in contradiction to a previous assignment of 41+. This makes 142Ce completely different from any known nucleus in the same region. It is shown, however, that this level is, in fact, completely consistent with 4+ and is in agreement with systematics.
Magnetic Moments Of 21+ States As A Probe Of The Effective Proton Boson Number Near The Z = 64 Subshell, A. Wolf, Z. Berant, D. D. Warner, R. L. Gill, M. Shmid, R. E. Chrien, Graham F. Peaslee, H. Yamamoto, John C. Hill, F. K. Wohn, C. Chung, W. B. Walters
Magnetic Moments Of 21+ States As A Probe Of The Effective Proton Boson Number Near The Z = 64 Subshell, A. Wolf, Z. Berant, D. D. Warner, R. L. Gill, M. Shmid, R. E. Chrien, Graham F. Peaslee, H. Yamamoto, John C. Hill, F. K. Wohn, C. Chung, W. B. Walters
Faculty Publications
The g-factors of the 21+ states in 144, 146Ba have been measured using the perturbed angular correlation method. The results are combined with existing experimental data for the neutron-rich Nd, Sm and Gd isotopes and discussed in the framework of the neutron proton interacting boson model. It is shown that the assumption of a drastic change in the effective proton boson number around N = 88, proposed in an earlier study, allows all the results to be explained in a simple framework involving constant values of the boson g-factors.
A Four-Detector System For Γ - Γ Angular Correlation Studies, A. Wolf, C. Chung, W. B. Walters, Graham Peaslee, R. L. Gill, M. Shmid, V. Manzella, E. Meier, M. L. Stellts, H. I. Liou, R. E. Chrien, D. S. Brenner
A Four-Detector System For Γ - Γ Angular Correlation Studies, A. Wolf, C. Chung, W. B. Walters, Graham Peaslee, R. L. Gill, M. Shmid, V. Manzella, E. Meier, M. L. Stellts, H. I. Liou, R. E. Chrien, D. S. Brenner
Faculty Publications
A multiple detector system for γ - γ coincidence and angular correlation measurements is described. The system consists of four large coaxial Ge detectors set at fixed positions, enabling the measurement of γ - γ coincidences between any pair. Thus, six distinct angles are measured simultaneously. The performance of the system was studied with a 152Eu source. An application for γ - γ correlation studies in 146Ce is described. Systematic errors, if present, are shown to be less than 0.03 and 0.05 for A2 and A4, respectively. The extension of this system to more than four detectors is straightforward.