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INVESTIGATION OF THE NUCLEAR STRUCTURE OF THE ISOTOPES 170−180Os
INVESTIGACIÓN DE LA ESTRUCTURA NUCLEAR DE LOS ISÓTOPOS 170−180Os
DOI:
https://doi.org/10.15446/mo.n68.109589Keywords:
IBM-1, SEF, NEE, energy levels, electromagnetic transition (en)IBM-1, SEF, NEE, niveles de energía, transición electromagnética (es)
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Interacting Boson Model (IBM-1), Semi Empirical Formula (SEF), and New Empirical Equation (NEE) methods were utilized to determine the energy states of the ground-state (GS), β and γ-bands in the 170-180Os isotopes. The results of the study on the GS, β, and γ bands suggest that IBM-1, SEF, NEE, and existing empirical evidence show some agreement, albeit with some discrepancies. The NEE results for GS, β, and γ bands are more reliable with empirical data than the estimates derived from the IBM-1 and SEF models. The reduced transition probabilities B(E2) of the IBM-1 model correspond well to the experimental data. In the GSB, the energies of the 6+, 8+, and 10+ states are not precisely modeled in the IBM-1 model. The R4/2 values of low-lying energy levels of Os isotopes fluctuate gradually with increasing neutron numbers. The EPS counter indicates that the transition limit of the 170-180Os isotopes has a rotational–vibrational γ-soft transition.
Se utilizaron los métodos del modelo de bosones en interacción (IBM-1), la fórmula semiempírica (SEF) y la nueva ecuación empírica (NEE) para determinar los estados energéticos del estado fundamental (GS) y las bandas β y γ en los isótopos 170-180Os. Los resultados del estudio para el estado fundamente y para las bandas β y γ sugieren que los m´etodos IBM-1, SEF, NEE y las pruebas empíricas existentes muestran cierta concordancia, aunque con algunas discrepancias. Los resultados de la NEE para el estado fundamental y para las bandas β y γ son más fiables con los datos empíricos que las estimaciones derivadas de los modelos IBM-1 y SEF. Las probabilidades de transición reducidas B(E2) del modelo IBM-1 corresponden correctamente a los datos experimentales. En el GSB, las energías de los estados 6+, 8+ y 10+ no se modelan con precisión en el modelo IBM-1. Los valores R4/2 de los niveles energéticos bajos de los isótopos de Os fluctúan gradualmente con el aumento del número de neutrones. El contador EPS indica que el límite de transición de los isótopos 170-180Os tiene una transición rotacional vibracional γ suave.
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