Reply to “Comment on ‘Three-body properties of low-lying<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mn>12</mml:mn></mml:msup><mml:mi mathvariant="bold">Be</mml:mi></mml:mrow></mml:math>resonances’ ”

Garrido, E.; Jensen, A. S.; Fedorov, D. V.; Johansen, Jacob

doi:10.1103/physrevc.88.039802

Phys. Rev. C

2013

DOI: 10.1103/physrevc.88.039802

|View full text |Cite

Reply to “Comment on ‘Three-body properties of low-lying12Beresonances’ ”

E. Garrido

A. S. Jensen

D. V. Fedorov

et al.

Abstract: We suggested that the two resonances at 0.89 and 2.03 MeV above the two-neutron separation threshold have spins and parities of 0 + and 1 − . In the Comment, Fortune claims that these states almost unambiguously must be 3 − and 4 + states. We work in three-body cluster models with J π = 0 + , 1 − , 2 + where all three-body continuum structures are included. Fortune bases his assignments on the bound-state shell-model and (t,p) calculations. Our conclusions are from three-body structure results including widths… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2014

2018

Publication Types

Select...

Article5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 5 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[22], one of the examples involves the two 14 C doublets that I am treating here. Note that I am not treating the 1/2 − states of 11 Be and 13 C (Table II) as p 1/2 single particles, but …”

mentioning

confidence: 98%

“…Comparison of heavy-ion-induced reactions leading to 12 Be [6,7] and 14 C [8] (where the 3 − is known) significantly strengthens the 3 − suggestion for the 4.56-MeV state. The suggestion [9] that the (3 − ) state might instead be 0 + has been addressed recently [10,11]. Nothing is known about possible 0 − and 2 − states, whose unnatural parity would have caused them to be very weak in the 10 Be(t,p) reaction.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Lowest negative-parity states inBe12

Fortune

2014

Phys. Rev. C

View full text Add to dashboard Cite

A very simple model is applied to the first four negative-parity states of 12 Be. Energies of the corresponding four states in 14 C are used to validate the model and to determine the doublet splitting parameters. Predictions for 12 Be are in remarkable agreement with excitation energies of the known 1 − at 2.70 MeV and the suspected (3 − ) at 4.56 MeV. Predicted excitation energies of 0 − and 2 − are 3.59 and 5.12 MeV, respectively.Introduction. In 12 Be, adding 2s 1/2 and 1d 5/2 neutrons to the first-excited state of 11 Be at 0.320 MeV [1] produces four negative-parity states, with J = 0 to 3. Of these, only the 1 − state at E x = 2.702 MeV [2] has been definitely identified. A candidate for the 3 − state is at 4.56 MeV. This state was initially suggested as 2 + [3], but it now appears likely [4,5] to be (3 − ) or a (3 − /2 + ) doublet. Millener [4] noted the excellent agreement between the 1.86 MeV energy difference between the 1 − and the probable (3 − ) in 12 Be and the 1/2 + -5/2 + splitting of 1.78 MeV in 11 Be. Comparison of heavy-ion-induced reactions leading to 12 Be [6,7] and 14 C [8] (where the 3 − is known) significantly strengthens the 3 − suggestion for the 4.56-MeV state. The suggestion [9] that the (3 − ) state might instead be 0 + has been addressed recently [10,11]. Nothing is known about possible 0 − and 2 − states, whose unnatural parity would have caused them to be very weak in the 10 Be(t,p) reaction. They were also not observed in two different investigations [12,13] of the 11 Be(d,p) reaction (in reverse kinematics), even though the 0 − spectroscopic factor is predicted [12] to be reasonably large. The possibility that the 0 − might be an isomer [14] depends on its energy relative to the neutron breakup threshold at 3.171 MeV [15].Various calculations have predicted the energy of the 0 − state. 16] produced a 0 − excitation energy of about 2.5 to 2.8 MeV. They had adjusted their potential to reproduce the ground state (g.s.) energy. They then found that they missed the energies of the second 0 + and first 2 + states by 0.84 and 0.92 MeV, respectively, which they fixed by adjusting a three-body force. They found they needed no three-body force for the 1 − state and hence used none for 0 − . Kanada-En'yo and Horiuchi [17] had predicted the 0 − to be very unbound, with E x ß 8-9 MeV, but they had the first 1 − above 5 MeV, and it is known at 2.7 MeV. Blanchon et al.[18] obtained an excitation energy of 2.91 MeV. Garrido et al. [9] have it at about 3.19 MeV. Kanungo et al.[12] calculated a 0 − energy at 5.59-5.91, but their energy of the 1 − state was 3.38-3.71 MeV. These predictions are summarized in Table I. A no-core shell-model calculation [19] considered only the first few states of 12 Be and thus provided no prediction for 0 − . Descouvement and Baye [20] calculated only natural-parity states and therefore had no 0 − prediction.In 14 C, four states with J π = 0 − to 3 − are known [21] and can be thought of as s and d neutrons coupled to the 1/2 − ground state (g.s.) of 13 C. Our aim h...

show abstract

mentioning

confidence: 98%

mentioning

confidence: 99%

Lowest negative-parity states inBe12

Fortune

2014

Phys. Rev. C

View full text Add to dashboard Cite

show abstract

(sd)20+states coupled top-shell cores

Fortune

2014

Phys. Rev. C

View full text Add to dashboard Cite

Low-lying neutron unbound states inBe12

et al. 2014

View full text Add to dashboard Cite

The neutron decay of an unbound resonance in 12 Be has been measured at 1243±21 keV decay energy with a width of 634±60 keV. This state was populated with a one-proton removal reaction from a 71 MeV/u 13 B beam incident upon a beryllium target. The invariant mass reconstruction of the resonance was achieved by measuring the daughter fragment in coincidence with neutrons. Despite being above the 2n separation energy, the state decays predominantly by the emission of one neutron to 11 Be, setting an upper limit on the branching ratio for the two-neutron decay channel to 10 Be of less than 5%. From the characteristics of the population and decay of the resonance, it is concluded that this state cannot correspond to the previously observed state at 4580±5 keV.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Reply to “Comment on ‘Three-body properties of low-lying12Beresonances’ ”

Cited by 5 publications

References 7 publications

Lowest negative-parity states inBe12

Lowest negative-parity states inBe12

(sd)20+states coupled top-shell cores

Low-lying neutron unbound states inBe12

Contact Info

Product

Resources

About