Recoil ions from the β decay of Sb 134 confined in a Paul trap

Authors

K. Siegl, University of Notre Dame
N. D. Scielzo, Lawrence Livermore National Laboratory
A. Czeszumska, Lawrence Livermore National Laboratory
J. A. Clark, Argonne National Laboratory
G. Savard, Argonne National Laboratory
A. Aprahamian, University of Notre Dame
S. A. Caldwell, Argonne National Laboratory
B. S. Alan, Lawrence Livermore National Laboratory
M. T. Burkey, Argonne National Laboratory
C. J. Chiara, Argonne National Laboratory
J. P. Greene, Argonne National Laboratory
J. Harker, Argonne National Laboratory
S. T. Marley, University of Notre Dame
G. E. Morgan, University of Manitoba
J. M. Munson, University of California, Berkeley
E. B. Norman, University of California, Berkeley
R. Orford, Argonne National Laboratory
S. Padgett, Lawrence Livermore National Laboratory
A. Perez Galván, Argonne National Laboratory
K. S. Sharma, University of Manitoba
S. Y. Strauss, University of Notre Dame

Document Type

Article

Publication Date

3-23-2018

Abstract

The low-energy recoiling ions from the β decay of Sb134 were studied by using the Beta-decay Paul Trap. Using this apparatus, singly charged ions were suspended in vacuum at the center of a detector array used to detect emitted β particles, γ rays, and recoil ions in coincidence. The recoil ions emerge from the trap with negligible scattering, allowing β-decay properties and the charge-state distribution of the daughter ions to be determined from the β-ion coincidences. First-forbidden β-decay theory predicts a β-ν correlation coefficient of nearly unity for the 0- to 0+ transition from the ground state of Sb134 to the ground state of Te134. Although this transition was expected to have a nearly 100% branching ratio, an additional 17.2(52)% of the β-decay strength must populate high-lying excited states to obtain an angular correlation consistent with unity. The extracted charge-state distribution of the recoiling ions was compared with existing β-decay results and the average charge state was found to be consistent with the results from lighter nuclei.

Publication Source (Journal or Book title)

Physical Review C

Recommended Citation

Siegl, K., Scielzo, N., Czeszumska, A., Clark, J., Savard, G., Aprahamian, A., Caldwell, S., Alan, B., Burkey, M., Chiara, C., Greene, J., Harker, J., Marley, S., Morgan, G., Munson, J., Norman, E., Orford, R., Padgett, S., Galván, A., Sharma, K., & Strauss, S. (2018). Recoil ions from the β decay of Sb 134 confined in a Paul trap. Physical Review C, 97 (3) https://doi.org/10.1103/PhysRevC.97.035504