Nuclear data measurements of neutron-rich nuclides produced in fission using on-line isotope separation
The fission process produces a wide range of neutron-rich nuclides far off the line of beta stability. Use of mass separation coupled on-line to a fission source has provided a new method for systematic study of the nuclear decay properties of these fission isotopes. In addition to their importance in studies of basic nuclear properties of neutron-rich nuclei fission products, because of their intimate link with energy production in fission reactors, occupy a unique position in the field of applied nuclear decay data. Interest in fission product decay data has increased markedly in recent years. In addition to their critical role in nuclear reactor technology (decay heat source term, environmental hazards, etc.), such data are necessary to allow refinement of nuclear models of very neutron-rich nuclides used in astrophysical calculations involving the rapid neutron-capture process (r-process) of elemental synthesis in stellar environments. In this paper, recent nuclear data measurement activities at the INEL pertinent to both fission reactor technology and to nuclear astrophysics are discussed. For these studies, ISOL facilities both at the INEL and BNL (TRISTAN) are used. At the INEL ISOL facility a systematic study of the gross nuclear decay properties of short-lived fission-product isotopes (i.e., ground-state half-lives, beta-decay energies and beta-strength functions) has been undertaken. At TRISTAN measurements of delayed-neutron energy spectra of those fission-product precursors most important to reactor technology are being made.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6241294
- Report Number(s):
- EGG-M-38187; CONF-880546-46; ON: DE89005198
- Resource Relation:
- Conference: International conference on nuclear data for science and technology, Mito, Japan, 30 May 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
22 GENERAL STUDIES OF NUCLEAR REACTORS
ASTROPHYSICS
FISSION PRODUCTS
DECAY
RADIOISOTOPES
DATA ANALYSIS
REACTORS
CALIFORNIUM 252
DECAY INSTABILITY
EXPERIMENTAL DATA
GROUND STATES
HALF-LIFE
IDAHO NATIONAL ENGINEERING LABORATORY
MASS RESOLUTION
MASS SPECTROSCOPY
MEASURING METHODS
SEPARATION PROCESSES
TEST FACILITIES
THEORETICAL DATA
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM ISOTOPES
DATA
ENERGY LEVELS
EVEN-EVEN NUCLEI
HEAVY NUCLEI
INFORMATION
INSTABILITY
ISOTOPES
MATERIALS
NATIONAL ORGANIZATIONS
NUCLEI
NUMERICAL DATA
PLASMA INSTABILITY
RADIOACTIVE MATERIALS
RESOLUTION
SPECTROSCOPY
US DOE
US ERDA
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES
070100* - Physical Isotope Separation
640101 - Astrophysics & Cosmology- Cosmic Radiation
220100 - Nuclear Reactor Technology- Theory & Calculation