Double K-shell-vacancy production in the decays of /sup 181/W and /sup 165/Er
The probabilities P/sub K/K of double K-shell-vacancy production per K-electron-capture decay of /sup 181/W and /sup 165/Er have been determined by means of K..cap alpha.. x-ray--K x-ray coincidence experiments: P/sub K/K = (2.4 +- 0.6) x 10/sup -6/ and P/sub K/K = (8.2 +- 2.8) x 10/sup -6/, respectively. The observed energy shifts of the hypersatellite Ta K..cap alpha../sub 1//sup H/-x-ray and Ho K..cap alpha../sub 1//sup H/-x-ray lines are 1026 +- 62 eV and 930 +- 70 eV, respectively. In the case of /sup 181/W, the theoretical P/sub K/K value deviates significantly from the above-mentioned experimental value. In combination with results from other experiments, this strongly suggests that, contrary to what the present theory predicts, P/sub K/K shows a considerable dependence on the ratio of transition energy to threshold energy.
- Research Organization:
- Physics Department, Delft University of Technology, Delft, The Netherlands
- OSTI ID:
- 6507890
- Journal Information:
- Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 26:5; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AUGER EFFECT
BETA DECAY
BETA DECAY RADIOISOTOPES
DATA
DAYS LIVING RADIOISOTOPES
DECAY
ELECTRON CAPTURE DECAY
ELECTRON CAPTURE RADIOISOTOPES
ELECTRONIC STRUCTURE
ENERGY
ENTHALPY
ERBIUM 165
ERBIUM ISOTOPES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
K CAPTURE
K SHELL
NUCLEI
NUMERICAL DATA
PHYSICAL PROPERTIES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SPECTRA
THERMODYNAMIC PROPERTIES
THRESHOLD ENERGY
TRANSITION HEAT
TUNGSTEN 181
TUNGSTEN ISOTOPES
X-RAY SPECTRA