L Fluorescence Yields in Heavy Elements

L Fluorescence Yields in Heavy Elements

L x-ray fluorescence yields for the Ra, Th, U, Pu, and Cm daughters of even-even alpha emitters were measured by three methods. Internal conversion of E2 gammas from the decay of these nuclides produces approximately equal numbers of L/sub II/ and L/sub III/ vacancies and practically no L/sub I/ vac...

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Veröffentlicht in:Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, 1964-04, Vol.134 (1A), p.A24-A28
Hauptverfasser: Halley, J. Woods, Engelkemeir, D.
Format: Artikel
Sprache:eng
Schlagworte:
ALPHA PARTICLES
CURIUM
DECAY
EMISSION
FLUORESCENCE
GAMMA RADIATION
INTERNAL CONVERSION
MEASURED VALUES
NUCLEAR MODELS
PHYSICS
PLUTONIUM
RADIUM
SHELL MODELS
URANIUM
X RADIATION
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Zusammenfassung:L x-ray fluorescence yields for the Ra, Th, U, Pu, and Cm daughters of even-even alpha emitters were measured by three methods. Internal conversion of E2 gammas from the decay of these nuclides produces approximately equal numbers of L/sub II/ and L/sub III/ vacancies and practically no L/sub I/ vacancies; the yields reported here are, therefore, averages of the L/sub II/ and L/sub III/ shell yields. The results are: Ra, 0.480 plus or minus 0.012; Th, 0.488 plus or minus 0.008; U, 0.478 plus or minus 0.009; Pu, 0.549 plus or minus 0.009; and Cm, 0.531 plus or minus 0.010. (auth)
ISSN:0031-899X
DOI:10.1103/PhysRev.134.A24