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arXiv · 1303.6398

Low lying spectroscopy of odd-odd $^{146}$Eu

T. Bhattacharjee·D. Banerjee·S. K. Das·S. Chanda·T. Malik·A. Chowdhury·P. Das·S. Bhattacharyya·R. Guin
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Abstract

Electron Capture (EC) decay of $^{146}$Gd($\it{t_{1/2}}$ = 48d) to the low lying states of $^{146}$Eu has been studied using high-resolution $\gamma$ ray spectroscopy. The $^{146}$Gd activity was produced by ($\alpha$, 2n) reaction at E$_{\alpha}$ = 32 MeV using 93.8% enriched $^{144}$Sm target. The level structure has been considerably modified from the measurement of $\gamma$ ray singles, $\gamma\gamma$ coincidences and decay half lives. Lifetime measurement has been performed for the 3$^-$ (114.06 keV) and 2$^-$ (229.4 keV) levels of $^{146}$Eu using Mirror Symmetric Centroid Difference (MSCD) method with LaBr$_3$ (Ce) detectors. The lifetimes for these two states have been found to be 5.38 $\pm$ 2.36 ps and 8.38 $\pm$ 2.19 ps respectively. Shell model calculation has been performed using OXBASH code in order to interpret the results.

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T. Bhattacharjee, D. Banerjee, S. K. Das, S. Chanda, T. Malik, A. Chowdhury, P. Das, S. Bhattacharyya, R. Guin. 2013-03-26. Low lying spectroscopy of odd-odd $^{146}$Eu. https://arxiv.org/abs/1303.6398

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