Recoil-beta tagging: A novel technique for studying proton-drip-line nuclei

A. N. Steer*, D. G. Jenkins, R. Glover, B. S. Nara Singh, N. S. Pattabiraman, R. Wadsworth, S. Eeckhaudt, T. Grahn, P. T. Greenlees, P. Jones, R. Julin, S. Juutinen, M. Leino, M. Nyman, J. Pakarinen, P. Rahkila, J. Saren, C. Scholey, J. Sorri, J. UusitaloP. A. Butler, I. G. Darby, R. -D. Herzberg, D. T. Joss, R. D. Page, J. Thomson, R. Lemmon, J. Simpson, B. Blank

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Tagging with charged particles and gamma-rays at the focal plane of recoil separators has proven, over the last two decades, to be a very powerful tool for the identification of excited states in exotic nuclei produced with very low cross-sections. One of the key areas so far unexplored in terms of the tagging methodology has been performing correlations with P-particles at the focal plane of a recoil separator. A new technique entitled Recoil-Beta Tagging (RBT) has been developed, this technique exploits the unusual properties of Fermi superallowed beta emitters, which have both a short half-life (similar to 100ms) and high beta(+)-endpoint energy. Correlating with such P-particles using a double-sided silicon strip detector and planar germanium detector as an effective Delta E-E telescope for high-energy positrons has allowed a proof-of-principle of this technique to be carried out, by cleanly identifying excited states in the proton-drip-line nucleus, Rb-74. (c) 2006 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)630-636
Number of pages7
JournalNuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment
Issue number2
Publication statusPublished - 15 Sept 2006


  • recoil separators
  • recoil-beta tagging
  • double-sided silicon strip detectors
  • Rb-74
  • NO-254

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