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Part of New Bethel Church Interpretive Center tour
May 4, 2003.

Presumably, the information is out of date. It is now here courtesy of Google's cache. More detailed information was (briefly) still found here on April 2, 2005.

Holifield Radioactive Ion Beam Facility

The Holifield Radioactive Ion Beam Facility (HRIBF) has served as a major national user facility by providing a wide variety of energetic heavy ions for performing research particularly in the areas of nuclear and atomic physics. These beams have been produced by means of two accelerators: a 25 MV electrostatic accelerator, which is the largest of this type in the world, and the Oak Ridge Isochronous Cyclotron (ORIC), which serves as an energy booster for the tandem beams. The facility is undergoing a major modification whereby it will be able to provide, in addition to beams of stable isotopes, radioactive ion beams with energies and species unobtainable elsewhere in the world. Operation as a user facility is expected to resume in 1995.

Research Opportunities

HRIBF has a broad selection of major experimental apparatus which are available to users of the facility. These include: UNISOR (UNiversity Ion Separator at Oak Ridge), an on-line mass separator in which neutron-deficient radioactive nuclei produced through heavy-ion-induced reactions are extracted for off-line investigations; a low-temperature facility (as low as 4 mK degrees) that can align the nuclei extracted from UNISOR; a spin spectrometer used for studying nuclear events with a high multiplicity of gamma-ray emissions; a close-packed array of 20 Compton suppressed germanium detectors for determining energies of gamma rays with high precision; a general-purpose scattering chamber; and a high resolution magnetic spectrometer, which includes a windowless gas target. Two more additional devices will be added before research is resumed in 1995: a recoil mass spectrometer with capability to observe reactions products with high mass resolution at zero degrees relative to the direction of the beam and a device designed for nuclear astrophysics programs. The Joint Institute for Heavy Ion Research, which is a shared venture of ORNL, the University of Tennessee, and Vanderbilt University, adjoins the facility. Its mission is to promote research at the HRIBF, principally through support of guests and conferences. In addition, temporary lodging accommodations for users are provided by the institute.

For more information, contact

Holifield Radioactive Ion Beam Facility
Building 6000
Oak Ridge National Laboratory
P.O. Box 2008
Oak Ridge, TN 37831-6368

Telephone: (423) 574-4113
FAX: (423) 574-1268

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Date Posted: 11/30/93 (ktb)


Disclaimer Fine Print: This site is personal, and is independent of ORNL or any other organization. Use of the abbreviation "ORNL" and the name "Oak Ridge National Laboratory" is purely for descriptive purposes. No endorsement, no approval, and no involvement by ORNL is implied.


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