MASS SEPARATION OF NEUTRON-RICH ISOTOPES USING A GAS-JET COUPLED THERMAL ION-SOURCE

Authors
ICHIKAWA S ASAI M TSUKADA K OSA A IKUTA T SHINOHARA N IIMURA H NAGAME Y HATSUKAWA Y NISHINAKA I KAWADE K YAMAMOTO H SHIBATA M KOJIMA Y
Citation
S. Ichikawa et al., MASS SEPARATION OF NEUTRON-RICH ISOTOPES USING A GAS-JET COUPLED THERMAL ION-SOURCE, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 374(3), 1996, pp. 330-334
Citations number
17
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
374
Issue
3
Year of publication
1996
Pages
330 - 334
Database
ISI
SICI code
0168-9002(1996)374:3<330:MSONIU>2.0.ZU;2-0
Abstract
A gas-jet coupled thermal ion source was installed in the isotope sepa rator on line at the JAERI tandem accelerator. It was used for separat ion of neutron-rich isotopes produced in the reaction U-238(15 MeV-p, fission). The separation efficiencies of the whole system were measure d to be 3.3% for Cs-140 (T-1/2 = 63.7 s), 2.0% for La-144 (T-1/2 = 40. 8 s), 2.2% for Pr-148 (T-1/2 = 2.0 m), 1.2% for Pm-156 (T-1/2 = 26.7 s ) and 1.0% for Eu-160 (T-1/2 = 44 s). A long sticking time of La atoms on the ionizer surface gave a low efficiency of about 0.1% for La-148 (T-1/2 = 1.05 s). The first observation of a new isotope Tb-166 was c arried out using its monoxide ions from this ion source: T-1/2 (Tb-166 ) = 21 +/- 6 s.