CRIS: A new method in isomeric beam production

K. M. Lynch, J. Billowes, M. L. Bissell, I. Budincevic, T. E. Cocolios, R. P. De Groote, S. De Schepper, V. N. Fedosseev, K. T. Flanagan, S. Franchoo, R. F. Garcia Ruiz, H. Heylen, B. A. Marsh, P. J.R. Mason, G. Neyens, T. J. Procter, R. E. Rossel, S. Rothe, G. S. Simpson, A. J. SmithI. Strashnov, H. H. Stroke, P. M. Walker, K. D.A. Wendt, R. T. Wood

    Research output: Contribution to journalConference articlepeer-review


    The Collinear Resonance Ionization Spectroscopy (CRIS) experiment at ISOLDE, CERN, uses laser radiation to stepwise excite and ionize an atomic beam for the purpose of ultra-sensitive detection of rare isotopes, and hyperfine-structure measurements. The technique also offers the ability to purify an ion beam that is heavily contaminated with radioactive isobars, including the ground state of an isotope from its isomer, allowing decay spectroscopy on nuclear isomeric states to be performed. The isomeric ion beam is selected by resonantly exciting one of its hyperfine structure levels, and subsequently ionizing it. This selectively ionized beam is deflected to a decay spectroscopy station (DSS). This consists of a rotating wheel implantation system for alpha- and beta-decay spectroscopy, and up to three germanium detectors around the implantation site for gamma-ray detection. Resonance ionization spectroscopy and the new technique of laser assisted nuclear decay spectroscopy have recently been performed at the CRIS beam line on the neutron-deficient francium isotopes. Here an overview of the two techniques will be presented, alongside a description of the CRIS beam line and DSS.

    Original languageEnglish (US)
    Article number01007
    JournalEPJ Web of Conferences
    StatePublished - 2013
    EventHeavy Ion Accelerator Symposium 2013 - Canberra, ACT, Australia
    Duration: Apr 8 2013Apr 12 2013

    ASJC Scopus subject areas

    • General Physics and Astronomy


    Dive into the research topics of 'CRIS: A new method in isomeric beam production'. Together they form a unique fingerprint.

    Cite this