The conversion electron spectra of Lu169 and Lu170

1961 ◽  
Vol 11 (2) ◽  
pp. 128-132 ◽  
Author(s):  
Z. Plajner ◽  
L. Malý ◽  
M. Vobecký
Keyword(s):  
Conversion Electron ◽  
Electron Spectra

Anomalous line shapes in the internal conversion electron spectrum from 227Th

1970 ◽  
Vol 48 (8) ◽  
pp. 993-1002 ◽  
Author(s):  
W. Gelletly ◽  
J. S. Geiger ◽  
J. S. Merritt
Keyword(s):  
Conversion Electron ◽  
Electron Spectrum ◽  
Complex Structure ◽  
Binding Energies ◽  
Line Shapes ◽  
Electron Spectra ◽  
Conversion Electron Spectrum ◽  
The Difference ◽  
Coincidence Spectra ◽  
Mean Charge

The conversion electron spectra of the 29.9 and 31.6 keV transitions in 223Ra which are excited by the α decay of 227Th have been studied using the Chalk River [Formula: see text] spectrometer. The shapes of the L and M subshell conversion lines of the 29.9 keV transition differ significantly from those of the corresponding lines of the 31.6 keV transition. This observation confirms the difference in line shapes first reported by Valadares, Walen, and Briancon. The conversion electron spectra which are coincident with α particles which penetrated normally through the source backing have also been measured. The coincidence arrangement selects the component of the conversion electron spectrum contributed by atoms recoiling freely into the spectrometer vacuum. The conversion lines of the 31.6 keV transition appear as single doppler-shifted components which are displaced toward higher momentum relative to the main peaks of the singles spectrum. The conversion lines of the 29.9 keV transition have a more complex structure. The doppler-shifted peak is less pronounced for these lines and 68 ± 10% of the intensity in these coincidence spectra appear in broad momentum distributions lying some hundreds of electron volts lower in energy than the doppler-shifted peak. These observations provide support for the explanation which Valadares, Walen, and Briancon have advanced to account for the anomalous appearance of the conversion lines of the 29.9 keV transition in their singles spectra. From the coincidence spectra measured in this work together with results from the charge state studies of Perrin and de Wieclawick, we infer that the LII, LIII, and MIII binding energies in 223Ra atoms of mean charge + 12 are 239 ± 32, 216 ± 25, and 212 ± 38 eV higher than the corresponding binding energies in 223Ra atoms of mean charge + 1.

Relativistic calculations of photoelectron and conversion-electron spectra for UF4

1993 ◽  
Vol 63 (4) ◽  
pp. 409-417 ◽  
Author(s):  
Takeshi Mukoyama ◽  
Hirohide Nakamatsu ◽  
Hirohiko Adachi
Keyword(s):  
Conversion Electron ◽  
Electron Spectra

Mössbauer Conversion Electron Spectra at Total Reflection

1984 ◽  
Vol 125 (2) ◽  
pp. 461-465 ◽  
Author(s):  
M. A. Andreeva ◽  
R. N. Kuzmin
Keyword(s):  
Conversion Electron ◽  
Total Reflection ◽  
Electron Spectra

scholarly journals Deconvolution of 238,239,240 Pu conversion electron spectra measured with a silicon drift detector

2018 ◽  
Vol 134 ◽  
pp. 233-239 ◽  
Author(s):  
S. Pommé ◽  
M. Marouli ◽  
J. Paepen ◽  
N. Marković ◽  
R. Pöllänen
Keyword(s):  
Conversion Electron ◽  
Silicon Drift Detector ◽  
Electron Spectra

Conversion Electron Spectra ofCm242andCm244

1956 ◽  
Vol 101 (2) ◽  
pp. 746-750 ◽  
Author(s):  
W. G. Smith ◽  
J. M. Hollander
Keyword(s):  
Conversion Electron ◽  
Electron Spectra

Cycle measurement of internal conversion electron spectra using an iron magnetic spectrometer

1974 ◽  
Vol 116 (3) ◽  
pp. 459-464 ◽  
Author(s):  
O. Dragoun ◽  
V. Brabec ◽  
V. Feifrlkí ◽  
A. Kuklík ◽  
F. Duda
Keyword(s):  
Conversion Electron ◽  
Internal Conversion ◽  
Magnetic Spectrometer ◽  
Internal Conversion Electron ◽  
Electron Spectra

scholarly journals Design and Development of a Mini-Orange Magnetic Spectrometer with Multichannel Facility for Conversion Electron Spectroscopy

2020 ◽  
Vol 8 (1) ◽  
pp. 25-31
Author(s):  
K. Venkataramaniah ◽  
M. Sainath ◽  
K.Vijay Sai ◽  
Dwarakarani Rao ◽  
Deepa Seetharaman
Keyword(s):  
Conversion Electron ◽  
Electron Spectroscopy ◽  
Permanent Magnets ◽  
Magnetic Spectrometer ◽  
Electron Spectra ◽  
Multichannel Analysis ◽  
Broad Energy Range ◽  
New Type ◽  
Conversion Electron Spectroscopy ◽  
Gamma Transitions

Background: Conventional magnetic spectrometers used for conversion electron detection are very cumbersome, require strong magnetic fields and the spectra have to be scanned point by point and have very low transmission. A magnetic filter using permanent magnets and an Si(Li) detector would facilitate multichannel analysis with high transmission. The mini-orange is a new type of spectrometer for conversion electrons combining a solid state Si(Li) detector with a filter of permanent magnets around a central absorber of lead.Purpose: An indigenously developed magnetic spectrometer if optimized properly would be of great use in conversion electron spectroscopy for both online and offline experiments. Methods: A Mini-Orange magnetic spectrometer made of small permanent magnets has been designed and developed indigenously and optimized for its best performance condition. The transmission curves for different energy regions are plotted using the conversion electron spectra from the standard gamma transitions from 153Gd, 169Yb and 131Ba decays. The optimized spectrometer facilitates multichannel acquisition of conversion electron spectra for precision electron spectroscopy. The system also can be used in in-beam experiments with minor modifications of the vacuum chamber.Results: The optimized spectrometer was used for precision electron spectroscopy. Experimental transmission curves are then obtained by plotting Transmission (T) against the corresponding electron energy for low energy, medium energy and a broad energy range. Out of the several experiments done the optimum settings for f and g, that resulted in this curve, is identified at f = 7.5 cm and g = 4.5 cm. Conclusions: The optimized spectrometer facilitates multichannel acquisition of conversion electron spectra for precision electron spectroscopy. The system also can be used in in-beam experiments with minor modifications of the vacuum chamber.

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