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‘Magic’ nucleus 42Si

Author

Listed:
  • J. Fridmann

    (Florida State University)

  • I. Wiedenhöver

    (Florida State University)

  • A. Gade

    (Michigan State University)

  • L. T. Baby

    (Florida State University)

  • D. Bazin

    (Michigan State University)

  • B. A. Brown

    (Michigan State University)

  • C. M. Campbell

    (Michigan State University)

  • J. M. Cook

    (Michigan State University)

  • P. D. Cottle

    (Florida State University)

  • E. Diffenderfer

    (Florida State University)

  • D.-C. Dinca

    (Michigan State University)

  • T. Glasmacher

    (Michigan State University)

  • P. G. Hansen

    (Michigan State University)

  • K. W. Kemper

    (Florida State University)

  • J. L. Lecouey

    (Michigan State University)

  • W. F. Mueller

    (Michigan State University)

  • H. Olliver

    (Michigan State University)

  • E. Rodriguez-Vieitez

    (Lawrence Berkeley National Laboratory)

  • J. R. Terry

    (Michigan State University)

  • J. A. Tostevin

    (University of Surrey)

  • K. Yoneda

    (Michigan State University)

Abstract

Silicon: the question is 42 Dramatic advances are being made in nuclear structure physics because of the availability of facilities producing beams of exotic radioisotopes. Of these, silicon-42 is of particular interest for study of the effects of packing extra neutrons into a nucleus. Neutrons and protons in atomic nuclei are arranged in a series of energy levels or ‘shells’. When a shell has a full quota of particles, the nucleus is particularly stable: the ‘magic numbers’ for stability are 2, 8, 20, 28, 50, 82 and 126. Silicon-42 owes its existence to its 28 neutrons, but is still a short-lived atom. This short lifetime has been explained as a consequence of strong deformation but this is contradicted in a new study that suggests that silicon-42 is almost spherical.

Suggested Citation

  • J. Fridmann & I. Wiedenhöver & A. Gade & L. T. Baby & D. Bazin & B. A. Brown & C. M. Campbell & J. M. Cook & P. D. Cottle & E. Diffenderfer & D.-C. Dinca & T. Glasmacher & P. G. Hansen & K. W. Kemper , 2005. "‘Magic’ nucleus 42Si," Nature, Nature, vol. 435(7044), pages 922-924, June.
    • Handle: RePEc:nat:nature:v:435:y:2005:i:7044:d:10.1038_nature03619
    DOI: 10.1038/nature03619
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