Smooth termination of intruder bands in 10951Sb

H. Schnare*, D. R. LaFosse, D. B. Fossan, J. R. Hughes, P. Vaska, K. Hauschild, I. M. Hibbert, R. Wadsworth, V. P. Janzen, D. C. Radford, S. M. Mullins, C. W. Beausang, E. S. Paul, J. DeGraaf, I. Y. Lee, A. O. Macchiavelli, A. V. Afanasjev, I. Ragnarsson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Intruder rotational bands have been investigated to high frequency in 10951Sb. Five decoupled (ΔI=2) bands extending to rotational frequencies above 1.4 MeV/ℏ have been observed. At the highest frequencies, the script J sign(2) dynamic moments of inertia for four of these bands are seen to decrease steadily to unexpectedly low values, script J sign(2) ∼ 10 ℏ2 MeV-1. These four bands, which are interpreted as being based on deformed 2p-2h proton excitations across the Z=50 closed-shell gap, achieve the so-called "smooth band termination" following alignment of the valence nucleons outside of 100Sn. In addition, two strongly coupled (ΔI=1) bands have been observed, which are related to 1p-1h proton excitations across the gap.

Original languageEnglish
Pages (from-to)1598-1609
Number of pages12
JournalPhysical Review C - Nuclear Physics
Volume54
Issue number4
DOIs
Publication statusPublished - Oct 1996

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