2006
DOI: 10.1103/physrevc.74.021303
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Two-neutron knockout from neutron-deficientAr34,S30

Abstract: Two-neutron knockout reactions from nuclei in the proximity of the proton dripline have been studied using intermediate-energy beams of neutron-deficient 34 Ar, 30 S, and 26 Si. The inclusive cross sections, and also the partial cross sections for the population of individual bound final states of the 32 Ar, 28 S and 24 Si knockout residues, have been determined using the combination of particle and γ -ray spectroscopy. Similar to the two-proton knockout mechanism on the neutron-rich side of the nuclear chart,… Show more

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Cited by 66 publications
(54 citation statements)
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“…First analyses were presented at RNB6 [7] for the reaction 28 Mg→ 26 Ne(J π ) at 83.2 MeV on a 9 Be target. Very recent measurements of two-neutron knockout, from intermediate-energy beams of 34 Ar, 30 S, and 26 Si, confirm this observation on the neutron-deficient side of the nuclear chart [8]. As has also been pointed out recently [9,10] two-nucleon removal data gives greater insight into structures at shell or subshell gaps, including transitions involving removal of the nucleons from above and across a shell gap -the latter being revealed by the population of final states of opposite parity [10].…”
Section: Introductionsupporting
confidence: 53%
See 1 more Smart Citation
“…First analyses were presented at RNB6 [7] for the reaction 28 Mg→ 26 Ne(J π ) at 83.2 MeV on a 9 Be target. Very recent measurements of two-neutron knockout, from intermediate-energy beams of 34 Ar, 30 S, and 26 Si, confirm this observation on the neutron-deficient side of the nuclear chart [8]. As has also been pointed out recently [9,10] two-nucleon removal data gives greater insight into structures at shell or subshell gaps, including transitions involving removal of the nucleons from above and across a shell gap -the latter being revealed by the population of final states of opposite parity [10].…”
Section: Introductionsupporting
confidence: 53%
“…These were studied using intermediate-energy beams of neutron-deficient 34 Ar, 30 S, and 26 Si [8]. These are shown in Figure 4 in terms of the measured and calculated (0 + ) ground state branching ratios.…”
mentioning
confidence: 99%
“…[1][2][3]. More recently, reaction studies have exploited the direct nature of the reaction mechanism for the removal of two well-bound (like) nucleons from already asymmetric nuclei to populate and probe the structure of the most neutron-rich and neutron-deficient nuclei [4][5][6][7]. These analyses exploit the accuracy and simplicity of the eikonal model for the reaction dynamics at the intermediate energies, of order 100 MeV/nucleon, of fragmentation facilities [5,7].…”
Section: Introductionmentioning
confidence: 99%
“…Very similar suppression factors are required to describe the three measured two-neutron removal reaction cases also. These are discussed more fully elsewhere [10,7].…”
Section: Effects On Two-nucleon Removal Calculationsmentioning
confidence: 99%
“…Four such reactions on sd-shell nuclei have been measured recently [6,7]. The availability of data on sd-shell nuclei, for which the predictive power of the shell-model is very high, thus allows a first assessment of the sensitivity of the reaction mechanism to the assumed two-nucleon structures in a rather clean, direct-reaction regime.…”
Section: Introductionmentioning
confidence: 99%