Advances at TRIUMF-ISAC and decay of neutron-rich Cd studied with GRIFFIN

P. E. Garrett, N. Bernier, R. Dunlop, A. D. MacLean, V. Bildstein, I. DIllmann, A. Jungclaus, C. E. Svensson, C. Andreoiu, G. C. Ball, H. Bidaman, P. Boubel, C. Burbadge, R. Caballero-Folch, M. R. Dunlop, L. J. Evitts, F. Garcia, A. B. Garnsworthy, G. Hackman, S. HallamJ. Henderson, S. Ilyushkin, D. Kisliuk, R. Krücken, J. Lassen, R. Li, E. MacConnachie, E. McGee, M. Moukaddam, B. Olaizola, K. Ortner, E. Padilla-Rodal, J. Park, O. Paetkau, C. M. Petrache, J. L. Pore, A. J. Radich, P. Ruotsalainen, J. Smallcombe, J. K. Smith, S. L. Tabor, A. Teigelhöfer, J. Turko, K. Whitmore, T. Zidar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The β-decay half lives of nuclei near the r-process path are critical information required for abundance calculations, especially those near neutron number N = 82. Specifically, the nuclei below doubly-magic 132Sn are key, and play an important role in the formation and shape of the second r-process abundance peak. The half lives in this region are challenging to measure due to the significant β-delayed neutron decay branches and the population of isomeric states with half lives comparable to the ground states. However, by measuring the time distribution of γ rays, these complications can be eliminated. This requires, however, a very effcient γ-ray spectrometer since the production of isotopes in this region is very limited. The new GRIFFIN array at TRIUMF-ISAC provides the high effciency required for these measurements. Recent improvements in the quality of the beams produced at TRIUMF, employing the IG-LIS device, are outlined, as well as the current status of the ARIEL facility. The GRIFFIN spectrometer and its use are briefly described. The experiment to measure the half lives of 128-130Cd is outlined and the results given, and some examples of the power of GRIFFIN to expand decay schemes, specifically for the decay of 128Cd to 128In, are given.

Original languageEnglish (US)
Title of host publication6th Workshop on Nuclear Fission and Spectroscopy of Neutron-Rich Nuclei, FISSION 2017
EditorsUlli Koster
PublisherEDP Sciences
ISBN (Electronic)9782759890620
DOIs
StatePublished - Nov 14 2018
Externally publishedYes
Event6th Workshop on Nuclear Fission and Spectroscopy of Neutron-Rich Nuclei, FISSION 2017 - Chamrousse, France
Duration: Mar 20 2017Mar 24 2017

Publication series

NameEPJ Web of Conferences
Volume193
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X

Conference

Conference6th Workshop on Nuclear Fission and Spectroscopy of Neutron-Rich Nuclei, FISSION 2017
Country/TerritoryFrance
CityChamrousse
Period3/20/173/24/17

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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