Far from 'Easy' Spectroscopy with the 8π and GRIFFIN Spectrometers at TRIUMF-ISAC

P. E. Garrett, A. J. Radich, J. M. Allmond, C. Andreoiu, G. C. Ball, P. C. Bender, L. Bianco, V. Bildstein, H. Bidaman, R. Braid, C. Burbadge, S. Chagnon-Lessard, D. S. Cross, G. Deng, G. A. Demand, A. Diaz Varela, M. R. Dunlop, R. Dunlop, P. Finlay, A. B. GarnsworthyG. F. Grinyer, G. Hackman, B. Hadinia, S. Ilyushkin, B. Jigmeddorj, D. Kisliuk, K. Kuhn, A. T. Laffoley, K. G. Leach, A. D. Maclean, J. Michetti-Wilson, D. Miller, W. Moore, B. Olaizola, J. N. Orce, C. J. Pearson, J. L. Pore, M. M. Rajabali, E. T. Rand, F. Sarazin, J. K. Smith, K. Starosta, C. S. Sumithrarachchi, C. E. Svensson, S. Triambak, J. Turko, Z. M. Wang, J. L. Wood, J. Wong, S. J. Williams, S. W. Yates, E. F. Zganjar

Research output: Contribution to journalConference articlepeer-review

16 Scopus citations


The 8π spectrometer, installed at the TRIUMF-ISAC facility, was the world's most sensitive γ-ray spectrometer dedicated to β-decay studies. A description is given of the 8π spectrometer and its auxiliary detectors including the plastic scintillator array SCEPTAR used for β-particle tagging and the Si(Li) array PACES for conversion electron measurements, its moving tape collector, and its data acquisition system. The recent investigation of the decay of 124Cs to study the nuclear structure of 124Xe, and how the β-decay measurements complemented previous Coulomb excitation studies, is highlighted, including the extraction of the deformation parameters for the excited 0+ bands in 124Xe. As a by-product, the decay scheme of the (7+) 124Cs isomeric state, for which the data from the PACES detectors were vital, was studied. Finally, a description of the new GRIFFIN spectrometer, which uses the same auxiliary detectors as the 8π spectrometer, is given.

Original languageEnglish
Article number012006
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - Sep 14 2015
Event38th Symposium on Nuclear Physics, Cocoyoc 2015 - Cocoyoc, Morelos, Mexico
Duration: Jan 6 2015Jan 9 2015

Bibliographical note

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.

ASJC Scopus subject areas

  • General Physics and Astronomy


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