Mirror Symmetry Up to the Band Termination in 49 Mn and 49 Cr
1997; American Physical Society; Volume: 79; Issue: 22 Linguagem: Inglês
10.1103/physrevlett.79.4349
ISSN1092-0145
AutoresC. D. O’Leary, M. A. Bentley, D. E. Appelbe, D. M. Cullen, S. Ertürk, R. A. Bark, A. Maj, Tadashi Saitoh,
Tópico(s)Atomic and Molecular Physics
ResumoHigh-spin states have been investigated in the mirror pair nuclei ${}^{49}\mathrm{Cr}$ ( $Z\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}24$, $N\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}25$) and ${}^{49}\mathrm{Mn}$ $(Z\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}25,N\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}24)$. Mirror symmetry up to the band termination at about 10.7 MeV has been established. A comparison of the corresponding energy levels of the pair shows, for the first time, that the Coulomb energy difference approaches zero as the band termination is approached. This is explained intuitively in terms of a pure ${f}_{\frac{7}{2}}$ shell framework. For ${}^{49}\mathrm{Cr}$, excellent agreement is found between the data and recent full $\mathrm{pf}$-shell calculations.
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