Spectroscopy of 16C

Behavior of(sd)4+2states coupled top-shell cores

“…A common feature of the (t,p) reaction on even-even p-shell nuclei is the appearance of a strong 4 + state-nearly always the strongest state in the spectrum [5,6,10,12,13]. The present work explores the properties of these states from 16 C to 10 Be.…”

“…In 16 C, for example, these (sd) 2 states are the only states at low excitation [1,5,6]. In some nuclei, e.g., 17 N and 15 C, these states exist alongside additional states of the opposite parity [1,[7][8][9].…”

Configuration mixing in Mg28 and the Mg26(t,p)MgMcNeel1, Wuosmaa2, Kuvin3 et al. 2021Phys. Rev. C4000View full textAdd to dashboardCite

“…While f p-configuration-dominated ground states characterize nuclei well within the island of inversion, nearby nuclei possess states with similar structure albeit at higher excitation energy. The present work aims to identify states with similar character in less neutron-rich magnesium nuclei and in particular study the sd-f p shell gap for 28 Mg, an isotope of magnesium located midway between stability and the island of inversion. 28 Mg is situated exactly between the N = Z nucleus 24 Mg and 32 Mg; for the latter, inclusion of the effects due to the proton-neutron imbalance are necessary to explain the structure of low-lying states.…”

“…The present work aims to identify states with similar character in less neutron-rich magnesium nuclei and in particular study the sd-f p shell gap for 28 Mg, an isotope of magnesium located midway between stability and the island of inversion. 28 Mg is situated exactly between the N = Z nucleus 24 Mg and 32 Mg; for the latter, inclusion of the effects due to the proton-neutron imbalance are necessary to explain the structure of low-lying states. In 32 Mg, the sd-f p shell gap is small enough that 4p-4h neutron configurations must be included to explain the properties of the low-lying 0 + states [11].…”

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We have studied the 26 Mg(t, p) 28 Mg reaction. The nucleus 28 Mg lies between 24 Mg and 32 Mg, the latter of which is central to the "island of inversion" characterized by low-lying neutron f p-shell configurations.

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