The Thomas-Ehrman shift across the proton dripline

Comay, E.; Kelson, I.; Zidon, A.

doi:10.1016/0370-2693(88)90343-7

Cited by 42 publications

(32 citation statements)

References 6 publications

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“…A systematic increase in the value of TES was demonstrated in [6] for systems beyond the proton dripline with increasing of proton (or two-proton) Q-values.…”

Section: This Paper Probes If the Thomas-ehrman Shift (Tes)mentioning

confidence: 92%

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Thomas-Ehrman effect in a three-body model: TheNe16case

Grigorenko

Golubkova²,

Zhukov³

2015

Phys. Rev. C

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The dynamic mechanism of the Thomas-Ehrman shift in three-cluster systems is studied by example of 16 Ne and 16 C isobaric mirror partners. We predict configuration mixings for 0 + and 2 + states in 16 Ne and 16 C. Large isospin symmetry breaking on the level of wave function component weights is demonstrated for these states and discussed as three-body mechanism of Thomas-Ehrman shift. It is shown that the description of the Coulomb displacement energies requires a consistency among three parameters: the 16 Ne decay energy ET , the 15 F ground state energy Er, and the configuration mixing parameters for the 16 Ne/ 16 C 0 + and 2 + states. Basing on this analysis we infer the 15 F 1/2 + ground state energy to be Er = 1.39 − 1.42 MeV.

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“…A systematic increase in the value of TES was demonstrated in [6] for systems beyond the proton dripline with increasing of proton (or two-proton) Q-values.…”

Section: This Paper Probes If the Thomas-ehrman Shift (Tes)mentioning

confidence: 92%

“…[6]. This work compared experimental masses M exp with masses M cg provided by chargesymmetric mass relationship…”

Section: This Paper Probes If the Thomas-ehrman Shift (Tes)mentioning

confidence: 99%

Thomas-Ehrman effect in a three-body model: TheNe16case

Grigorenko

Golubkova²,

Zhukov³

2015

Phys. Rev. C

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“…1 of Ref. [9]). Based on shell model calculations predicting this 0 1 2 state at 2.6 MeV Gilman et al [10] calculate for this transition a cross section 6 times smaller than for the GST at pion energies in the D-resonance region.…”

mentioning

confidence: 88%

“…Adding the energy displacement of the 16 Ne ground state as given in Ref. [9] results in a total displacement of 21.5͑2͒ MeV for the 0 1 2 state. This value, though very large, fits very well into the phenomenological systematics of Thomas-Ehrman shifts across the proton dripline (see Fig.…”

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confidence: 99%

Pionic Double Charge Exchange onN=ZDoubly Closed Shell Nuclei

et al. 1997

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The ͑p 1 , p 2 ͒ reaction on the isoscalar, doubly magic nuclei 16 O and 40 Ca has been measured in the energy range T p 45 90 MeV. The forward angle cross sections of the ground state transitions (GST) show a very pronounced resonancelike energy dependence. The observed energy and angle dependences are well described by the recent hypothesis of the formation of a pNN resonance in the course of the double charge exchange process. The deduced spreading widths are in accordance with estimates of the d 0 collision damping in the nuclear medium. In the reaction on 16 O in addition to the GST the transition to a 0 1 state at E x 2.1͑2͒ MeV in 16 Ne has been observed, which is interpreted as the quadruple isobaric analog state (QIAS) of the 0 1 2 state in 16 C at E x 3.03 MeV. [S0031-9007 (97)04511-0]

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“…Studies of the TES were recently extended to nuclei with an even number of "valence" nucleons, which allowed for estimates of nuclear configuration mixing [26]. The TES effect is responsible for energy anomalies in the nuclei near and especially beyond the proton drip line [27]. In our case, the 1=2 þ g.s.…”

mentioning

confidence: 89%

Observation and Spectroscopy of New Proton-Unbound IsotopesAr30andCl29
Mukha¹,
Grigorenko²,
Xu³
et al. 2015
Phys. Rev. Lett.
44
2
34
0
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Previously unknown isotopes30 Ar and 29 Cl have been identified by measurement of the trajectories of their in-flight decay products 28 S þ p þ p and 28 S þ p, respectively. The analysis of angular correlations of the fragments provided information on decay energies and the structure of the parent states. The ground states of 30 Ar and 29 Cl were found at 2.25 þ0.15 −0.10 and 1.8 AE 0.1 MeV above the two-and one-proton thresholds, respectively. The lowest states in 30 Ar and 29 Cl point to a violation of isobaric symmetry in the structure of these unbound nuclei. The two-proton decay has been identified in a transition region between simultaneous two-proton and sequential proton emissions from the 30 Ar ground state, which is characterized by an interplay of three-body and two-body decay mechanisms. The first hint of a fine structure of the two-proton decay of 30 Ar Ã ð2 þ Þ has been obtained by detecting two decay branches into the ground and first-excited states of the 28 S fragment.

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The Thomas-Ehrman shift across the proton dripline

Cited by 42 publications

References 6 publications

Thomas-Ehrman effect in a three-body model: TheNe16case

Thomas-Ehrman effect in a three-body model: TheNe16case

Pionic Double Charge Exchange onN=ZDoubly Closed Shell Nuclei

Observation and Spectroscopy of New Proton-Unbound IsotopesAr30andCl29
Mukha¹,
Grigorenko²,
Xu³
et al. 2015
Phys. Rev. Lett.
44
2
34
0
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The Thomas-Ehrman shift across the proton dripline

Cited by 42 publications

References 6 publications

Thomas-Ehrman effect in a three-body model: TheNe16case

Thomas-Ehrman effect in a three-body model: TheNe16case

Pionic Double Charge Exchange onN=ZDoubly Closed Shell Nuclei

Observation and Spectroscopy of New Proton-Unbound IsotopesAr30andCl29Mukha1, Grigorenko2, Xu3 et al. 2015Phys. Rev. Lett.442340View full textAdd to dashboardCite

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Observation and Spectroscopy of New Proton-Unbound IsotopesAr30andCl29
Mukha¹,
Grigorenko²,
Xu³
et al. 2015
Phys. Rev. Lett.
44
2
34
0
View full text Add to dashboard Cite