Structure of chlorine isotopes populated by heavy ion transfer reactions

Abstract

Neutron-rich chlorine isotopes were populated in the 40 Ar + 208 Pb multiple transfer reaction via the −1p channels in a fragment-γ coincident measurement employing the Prisma-Clara setup. New γ transitions have been identified and, together with already available data, level schemes have been revised and compared with the results of large-scale sd-pf shell-model calculations. The evolution of the energy splitting between the s 1/2 and d 3/2 orbitals and the increased mixing of different proton configurations in the populated Cl isotopic chain have been deduced by inspecting the shell-model wave functions.

Investigation of the ground-state spin inversion in the neutron-rich Cl47,49 isotopes

“…Since no spin-parity measurement could be performed, only the absolute value | | was determined. For 41 Cl, a small value | | = 129.7 keV was found in in-beam studies using deep-inelastic scattering [20][21][22], and is consistent with shell-model calculations. β-decay data [23] were inconclusive on the spin assignment.…”

“…The shaded area stands for the possible existence of a single or two different states (see text). 768 (22) keV added to improve the fit. Without further information, it is not possible to place the 768 keV transition in the level scheme shown in Fig.…”

Selective properties of neutron transfer reactions in the 90Zr + 208Pb system for the population of excited states in zirconium isotopes

“…Based on the γ rays observed in our measurement, and the assignments found in evaluated data compilations of levels properties for 89 Zr [28], 90 Zr [29], 91 Zr [30], 92 Zr [31], 93 Zr [32] and 94 Zr [33] level schemes have been constructed and updated. In some cases the additional informations were obtained from more recent measurements.…”

“…The level spectroscopy properties are from the data compilation in Ref. [28]. The γ -ray line at 587.8 keV, denoted by a dashed line, decays from the long-lived (T 1/2 = 4.2 min) 1/2 − state, and thus cannot be observed in our experiment.…”

Multinucleon transfer reactions in the Ar40+Pb208 system

“…The same reaction (in the same experiment) was previously used [12,24] to study the spectroscopy of the neutron-rich Ar and Cl isotopes with PRISMA coupled with the CLARA gamma array. • .…”