Precision determination of energies of gamma rays in Sm152, Gd152, 154, 155, 156, Yb170, and Os188

Hatch, E.N.; Boehm, F.

doi:10.1007/bf01326868

Cited by 32 publications

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“…The decay scheme shown in Figure 23 An accurate comparison of the branching ratios from the 87-and 105-keV levels to the 60-keV and ground state levels using Equation 26could lead to an assignment of the spins. However, a comparison of the present measurement for these levels (91,92,93) The results of the present investigation are also compared to Nils son's predictions later in this section; this comparison agrees with the statement of Deutch et al There is considerable doubt however, that this method is sufficiently accurate to allow an accurate assignment of the spins. For example, assigning the 3/2 spin to the 105keV level would only result in a disagreement of factors of 2 and 5 between the experiment al values and the theoretical values for the 105 and 87keV levels, respectively.…”

Section: Comparison With Theoretical Predictionssupporting

confidence: 88%

Some lifetime measurements of isomeric states in the rare earth region with magnetic coincidence beta-ray spectrometers

McAdams

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This report was prepared as an account of Government sponsored work. Neither the United States, nor the Commission, nor any person acting on behalf of the Commission:A. Makes any warranty or representation, expressed or implied, with respect to the accuracy, completeness, or usefulness of' the information contained in this report, or that the use of any information, apparatus, method, or process disclosed in this report may not infringe privately owned rights; or B. Assumes any liabilities with respect to the use of, or for damages resulting from the use of any information, apparatus, method, or process disclosed in this report.As used in the above, "person acting on behalf of the Commission" includes any employee or contractor of the Commission, or employee of such contractor, to the extent that such employee or contractor of the Commission, or employee of such contractor prepares, disseminates, or provides access to, any information pursuant to his employment or contract with the Commission, or his employment with such contractor.

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Section: Comparison With Theoretical Predictionssupporting

confidence: 88%

Some lifetime measurements of isomeric states in the rare earth region with magnetic coincidence beta-ray spectrometers

McAdams

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“…The weighted average values are presented in Table 6 Figure 32. Gd composite spectrum with computed composite spectrum and monoenergetic components ^Source: (64).…”

Section: Diffraction Crystal While the Respense Fonctions For The 93mentioning

confidence: 99%

Measurements of some gamma-ray relative intensities and internal conversion coefficients using a bent-crystal monochromator

Nelson

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“…The present X-ray intensities have been corrected for the 45-keV gamma rays and the Gd X-rays due to the conversion of the 123-keV transition. The 45-keV intensity was taken from Hatch and Boehm(64). The correction for the Gd X-rays from the conversion of the 123-keV transition was made in the following way.…”

mentioning

confidence: 99%

Measurements of some gamma-ray relative intensities and internal conversion coefficients using a bent-crystal monochromator

Nelson

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The X-ray and gamma-ray relative intensities were measured, from the decay of and Sm^^^ with a bent-crystal monochromator and a linear least-squares computer program. The K-shell internal conversion coefficients were determined for the E2 transitions in and Er. The K-shell conversion coefficient, for the 84.3-keV transition in Yb^^^ was determined to be 1.43±0.04 while the K-shell internal conver sion coefficient for the 80.6-keV transition in Er was determined to be 4* + 1.72±0.06. The results for these 2-K) transitions are five percent higher than the theoretical values for these transitions. From the relative inten-180 sities of the transitions in Hf it was possible to deduce a value for the 93 total internal conversion coefficient for the 93.3-keV transition of cy = 4.91±0.23. Using the previous measurements of conversion electron intensi ties of Edwards and Boehm and the present measured gamma-ray relative inten sities, internal conversion coefficients for all the other transitions were obtained. The present measurements of for the 215.3-, 332.5-and 443.8-keV E2 transitions are 11 percent lower than the theoretical values, while for the 93.3-keV E2 transition agrees closely with the theoretical value. These results are in close agreement with the previous measurements of Edwards and Boehm. The present valjie_for_a|^ for the 501-keV transition agrees closely with the theoretical for an E3 multipolarity. From the 1 CC X-ray and gamma-ray relative intensities of the transitions in Gd and the previous measurement of the ratio of K conversion electrons for the 86and 105-keV transitions of Subba Rao, it was possible to determine the K V conversion coefficients for the 86-and 105-keV transitions of «j, = 0.43 ±0.06 and = 0.23±0.03. These results are in agreement with the theo retical values for pure El transitions. The relative intensities of the 246-, 142-and 104-keV gamma rays following the decay of 22 minute were determined with improved precision in order that they might be used to determine accurately the conversion coefficients for these transitions.

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Precision determination of energies of gamma rays in Sm152, Gd152, 154, 155, 156, Yb170, and Os188

Cited by 32 publications

References 0 publications

Some lifetime measurements of isomeric states in the rare earth region with magnetic coincidence beta-ray spectrometers

Some lifetime measurements of isomeric states in the rare earth region with magnetic coincidence beta-ray spectrometers

Measurements of some gamma-ray relative intensities and internal conversion coefficients using a bent-crystal monochromator

Measurements of some gamma-ray relative intensities and internal conversion coefficients using a bent-crystal monochromator

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