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Identification of new transitions and mass assignments of levels in $^{143-153}$Pr by Wang, E. H.; Lemasson, A.; Hamilton, J. H.; Ramayya, A. V.; Hwang, J. K.; Eldridge, J. M.; Navin, A.; Rejmund, M.; Bhattacharyya, S.; Liu, S. H.; Brewer, N. T.; Luo, Y. X.; Rasmussen, J. O.; Liu, H. L.; Zhou, H.; Liu, Y. X.; Li, H. J.; Sun, Y.; Xu, F. R.; Zhu, S. J.; Ter-Akopian, G. M.; Oganessian, Yu. Ts.; Caamaño, M.; Clément, E.; Delaune, O.; Farget, F.; de France, G.; Jacquot, B. is a scholarly article available to read on EtoBox.

What is Identification of new transitions and mass assignments of levels in $^{143-153}$Pr about?

The previously reported levels assigned to 151,152,153Pr have recently been called into question regarding their mass assignment. The above questioned level assignments are clarified by measuring g-transitions tagged with A and Z in an in-beam experiment in addition to the measurements from 252Cf spontaneous fission (SF) and establish new spectroscopic information from $N=84$ to $N=94$ in the Pr isotopic chain. The isotopic chain 143-153Pr has been studied from the spontaneous fission of 252Cf by using Gammasphere and also from the measurement of the prompt g-rays in coincidence with isotopically-identified fission fragments using VAMOS++ and EXOGAM at GANIL. The latter were produced using 238U beams on a 9Be target at energies around the Coulomb barrier. The g-g-g-g data from 252Cf (SF) and those from the GANIL in-beam A- and Z-gated spectra were combined to unambiguously assign the various transitions and levels in 151,152,153Pr and other isotopes. New transitions and bands in 145,147,148,149,150Pr were identified by using g-g-g and g-g-g-g coincidences and A and Z gated g-g spectra. The transitions and levels previously assigned to 151,153Pr have been confirmed by the (A,Z) gate

Author

Wang, E. H.; Lemasson, A.; Hamilton, J. H.; Ramayya, A. V.; Hwang, J. K.; Eldridge, J. M.; Navin, A.; Rejmund, M.; Bhattacharyya, S.; Liu, S. H.; Brewer, N. T.; Luo, Y. X.; Rasmussen, J. O.; Liu, H. L.; Zhou, H.; Liu, Y. X.; Li, H. J.; Sun, Y.; Xu, F. R.; Zhu, S. J.; Ter-Akopian, G. M.; Oganessian, Yu. Ts.; Caamaño, M.; Clément, E.; Delaune, O.; Farget, F.; de France, G.; Jacquot, B.

Published

2015

Language

EN