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MASS ASSIGNMENTS AND SOME DECAY CHARACTERISTICS OF Gd$sup 145$, Eu$sup 145$, Gd$sup 146$, AND Eu$sup 14$$sup 6$

Journal Article · · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

The nuclides Gd/sup 145/, Eu/sup 145/ Gd/sup 146/ and Eu/sup 146/ were prepar ed by the interactions of 20- to 40-Mev helium ions with Sm/sup 144/, and found to decay with half-lives of 25 plus or minus 2 minutes, 5.6 plus or minus 0.3 days, 46 plus or minus 2 days, and 4.4 plus or minus 0.1 days, respectively. The mass number assignments were made on the basis of excitation functions, and chemical evidense of parent-daughter relationships, with special reference to the previously known nuclide Eu/sup 145/. The most prominent gamma rays appearing in the decay of each of these four nuclides are as follows: in Gd/ sup 145/ decay, at 0.80, 1.03, and 1.75-Mev; in Eu/sup 145/ decay, at 0.53, 0.64, and 0.89 Mev; in Gd/sup 146/ decay, at 0.114 and 0.153 Mev; and in Eu/sup 146/ decay, at 0.63 and 0.74 Mev. There is also a strong K x-ray line in each spectrum. In addition, Gd/sup 145/ was found to emit pcsitrons with an end-point energy of about 2.4 plus or minus 0.2 Mev. (auth)

Research Organization:
Brookhaven National Lab., Upton, N.Y.
NSA Number:
NSA-14-005865
OSTI ID:
4207683
Journal Information:
Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 116; ISSN PHRVA
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ALPHA BEAMS-- CROSS SECTIONS-- ENERGY RANGE-- EUROPIUM 145-- EXCITATION-- MEASURED VALUES-- NUCLEAR REACTIONS-- SAMARIUM 144
ALPHA BEAMS-- CROSS SECTIONS-- ENERGY RANGE-- EUROPIUM 146-- EXCITATION-- MEASURED VALUES-- NUCLEAR REACTIONS-- SAMARIUM 144
ALPHA BEAMS-- CROSS SECTIONS-- ENERGY RANGE-- EXCITATION-- GADOLINIUM 145-- MEASURED VALUES-- NUCLEAR REACTIONS-- SAMARIUM 144
ALPHA BEAMS-- CROSS SECTIONS-- ENERGY RANGE-- EXCITATION-- GADOLINIUM 146-- MEASURED VALUES-- NUCLEAR REACTIONS- - SAMARIUM 144
BETA DECAY-- CHEMICAL REACTIONS-- DECAY-- GADOLINIUM 145-- GAMMA RADIATION-- HALF-LIFE-- MASS-- MEASURED VALUES-- POSITRONS-- X RADIATION
CH
PHYSICS