Measured lifetimes of the 8.4, 118 and 139 keV nuclear levels in 169Tm and of the 396 keV level in 175Lu

Lifetimes of the first excited states in Tm169, Tm171, and Cs134

“…Table 6 shows that only three of the eight measurements agree with the model prediction, the present measurement, that by McAdams e_t aj_. (35 ), which was performed independently In this laboratory, and the first reported measurement by Beekhuls and de Waard (95 ), which has a rather ^The theoretical Internal conversion coefficients were determined by interpolation in the tables of reference (101) using the computer program listed therein. larger error assignment.…”

“…Electronic energy discrimination can also be used with electrons directly incident on a scintillator or solid-state device) however, much better energy resolution (< 5% in momentum) is possible by use of magnetic-spectrometer energy selection between the source and one or both detectors in delayed-coincldence measurements (33^34, 35,36,37,38). In some cases such energy resolution is necessary to eliminate unwanted coincidences associated with close-lying transitions originating from different nuclear states and is capable of providing the most un ambiguous results when knowledge of the decay scheme is incomplete.…”

A Mössbauer effect study of the crystal field potential in intermetallic compounds of thulium

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