Neutron-deficient isotopes of lanthanum—La ¹²⁷ , La ¹²⁸ , La ¹²⁹ , La ¹³⁰ , and La ¹³¹

Journal Article · Thu Aug 01 04:00:00 EDT 1963 · Canadian Journal of Chemistry

DOI:https://doi.org/10.1139/v63-286· OSTI ID:4658203

Yaffe, L.; Alexander, J. M.; Hyde, E. K.

La¹²⁷, La¹²⁸, La¹²⁹, and La¹³¹ were produced by the reaction of C¹² ions with Sb. Half lives of 3.5 plus or minus 0.5, 4.6 plus or minus 0.6, 8.6 plus or minus 1.8, and 56 plus or minus 3 min respectively, were obtained from the observed growth of the respective Ba daughters. The half life for Ba¹²⁸ was found to be 2.43 plus or minus 0.05 days. La¹²⁹ and La¹³⁰ were produced and identified by the reactions Ba¹³⁰(p,2n) and Ba¹³⁰(p,n) respectively, carried out with targets enriched in Ba¹³⁰. In the proton bombardments, half lives of 10.0 plus or minus 0.5 min and 8.7 plus or minus 0.1 min were found for La¹²⁹ and La¹³⁰, respectively.

• Research Organization: McGill Univ., Montreal
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-033023
• OSTI ID: 4658203
• Journal Information: Canadian Journal of Chemistry, Journal Name: Canadian Journal of Chemistry Journal Issue: 8 Vol. 41; ISSN 0008-4042
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ANTIMONY
CARBON 12
ENRICHMENT
HALF-LIFE
IONS
ISOTOPES
LANTHANUM 127
LANTHANUM 128
LANTHANUM 129
LANTHANUM 130
LANTHANUM 131
NEUTRONS
NUCLEAR REACTIONS
PROTON BEAMS
QUANTITY RATIO
TARGETS