Published 1981 | Version v1
Report Restricted

Identification of new neutron-rich rare-earth nuclei produced in 252Cf spontaneous fission

Creators

Description

A program of systematic study of the decay properties of neutron-rich rare-earth nuclei with 30 s < t/sub 1/2/ < 10 min, produced in 252Cf spontaneous fission, is currently underway using the Idaho ESOL (Elemental Separating On Line) Facility. The chemistry system used for the rare earth elemental separations consists of two high-performance chromatography columns connected in series and coupled to the 252Cf fission source via a helium gas-jet transport arrangement. The time delay for separation and initiation of γ-ray counting with this system is typically 2 to 3 min. Significant results which have been obtained to date with this system include the identification of a number of new neutron-rich rare-earth isotopes including 155Pm (t/sub 1/2/ = 48 +- 4 s) and 163Gd (t/sub 1/2/ = 68 +- 3 s), in addition to 5.51 min 158Sm which was identified in an earlier series of experiments

Availability note (English)

MF available from INIS under the Report Number; Available from NTIS., PC A02/MF A01.

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Additional details

Publishing Information

Imprint Pagination
15 p.
Report number
EGG-M--02581

Conference

Title
4. international conference on nuclei far from stability.
Dates
7 - 13 Jun 1981.
Place
Helsingoer, Denmark.

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
13674032
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BETA-MINUS DECAY; CALIFORNIUM 252; EXTRACTION CHROMATOGRAPHY; FISSION PRODUCTS; GADOLINIUM 163; GAMMA SPECTRA; GAMMA SPECTROSCOPY; NEUTRON-RICH ISOTOPES; PROMETHIUM 155; RADIOMETRIC ANALYSIS; RARE EARTH NUCLEI; REACTION PRODUCT TRANSPORT; SPONTANEOUS FISSION
Descriptors DEC
ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BETA DECAY; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CALIFORNIUM ISOTOPES; CHEMICAL ANALYSIS; CHROMATOGRAPHY; DECAY; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FISSION; GADOLINIUM ISOTOPES; HEAVY NUCLEI; INTERMEDIATE MASS NUCLEI; ISOTOPES; MINUTES LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; PROMETHIUM ISOTOPES; QUANTITATIVE CHEMICAL ANALYSIS; RADIOACTIVE MATERIALS; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SEPARATION PROCESSES; SPECTRA; SPECTROSCOPY; YEARS LIVING RADIOISOTOPES

Optional Information

Secondary number(s)
CONF-810649--14.