Evidence of Partial Seniority Conservation in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>π</mml:mi><mml:msub><mml:mrow><mml:mi>g</mml:mi></mml:mrow><mml:mrow><mml:mn>9</mml:mn><mml:mo stretchy="false">/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math> Shell for the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>50</mml:mn></mml:math> Isotones
R. M. Pérez-Vidal, A. Gadea, C. Domingo‐Pardo, A. Gargano, J. J. Valiente-Dobón, E. Clément, A. Lemasson, L. Coraggio, M. Siciliano, S. Szilner, M. Bast, T. Braunroth, J. Collado, A. Corina, Α. Dewald, M. Doncel, J. Dudouet, G. de France, C. Fransen, V. González, T. Hüyük, B. Jacquot, P. R. John, A. Jungclaus, Y.H. Kim, A. Korichi, M. Labiche, S. M. Lenzi, H. Li, J. Ljungvall, А. Лопез-Мартенс, D. Mengoni, C. Michelagnoli, C. Müller-Gatermann, D. R. Napoli, A. Navin, B. Quintana, D. Ramos, M. Rejmund, E. Sanchís, J. Simpson, O. Stézowski, D. Wilmsen, M. Zielińska, A.J. Boston, D. Barrientos, P. Bednarczyk, G. Benzoni, B. Birkenbach, H.C. Boston, A. Bracco, B. Cederwall, D. M. Cullen, F. Didierjean, J. Eberth, A. Gottardo, J. Goupil, L. J. Harkness-Brennan, H. Hess, D. S. Judson, A. Kaşkaş, W. Korten, S. Leoni, R. Menegazzo, B. Million, J. Nyberg, Zs. Podolyák, A. Pullia, D. Ralet, F. Recchia, P. Reiter, K. Rezynkina, M.-D. Salsac, M. Şenyiğit, D. Sohler, Ch. Theisen, D. Verney
Abstract
The reduced transition probabilities for the ${4}_{1}^{+}\ensuremath{\rightarrow}{2}_{1}^{+}$ and ${2}_{1}^{+}\ensuremath{\rightarrow}{0}_{1}^{+}$ transitions in $^{92}\mathrm{Mo}$ and $^{94}\mathrm{Ru}$ and for the ${4}_{1}^{+}\ensuremath{\rightarrow}{2}_{1}^{+}$ and ${6}_{1}^{+}\ensuremath{\rightarrow}{4}_{1}^{+}$ transitions in $^{90}\mathrm{Zr}$ have been determined in this experiment making use of a multinucleon transfer reaction. These results have been interpreted on the basis of realistic shell-model calculations in the ${f}_{5/2}$, ${p}_{3/2}$, ${p}_{1/2}$, and ${g}_{9/2}$ proton valence space. Only the combination of extensive lifetime information and large scale shell-model calculations allowed the extent of the seniority conservation in the $N=50$ ${g}_{9/2}$ orbital to be understood. The conclusion is that seniority is largely conserved in the first $\ensuremath{\pi}{g}_{9/2}$ orbital.