Proton halo in the 13N nucleus

Demyanova, A. S.; Ogloblin, A. A.; Danilov, A. N.; Belyaeva, T. L.; Goncharov, S. A.; Trzaska, W. H.

doi:10.1134/s0021364016200108

Cited by 12 publications

(10 citation statements)

References 22 publications

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“…Very recently the observation of a proton halo in the unbound 2.37-MeV 1/2 + state of 13 N, a mirror state with respect to the 3.09-MeV state of 13 C, was reported [37]. The enhanced rms radius of 13 N in this state (in comparison with the g.s.…”

Section: Discussionmentioning

confidence: 99%

“…Thus the radii of 12 B in the halo states that will be presented in this paper are useful in estimating the radii of the nuclei with A = 12 determined by other methods. It should be mentioned in this connection that a possibility to apply the modified diffraction method (MDM) [34][35][36] for determining the radii of nuclei in the excited states by studying the charge-exchange ( 3 He, t ) reactions was recently proposed [37]. The first applications of MDM to the mirror states of 13 C and 13 N nuclei [37] have demonstrated the effectiveness of this new approach.…”

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Neutron halos in the excited states of B12

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Section: Discussionmentioning

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Neutron halos in the excited states of B12

et al. 2018

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“…There are convincing arguments to apply the MDM to charge exchange reactions in order to study the IAS of mirror nuclei. We have first applied this approach to determine the proton halo in the unbound state of 13 N [5]. More detailed description is present in [23].…”

Section: Mdm Analysismentioning

confidence: 99%

States of the 12N Nucleus with Increased Radii

Demyanova¹,

Danilov²,

Ogloblin³

et al. 2020

Jetp Lett.

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The differential cross sections of the 12 C( 3 He,t) 12 N reaction leading to formation of the 1 + (ground state), 2 + (0.96 MeV), 2 − (1.19 MeV), and 1 − (1.80 MeV) states of 12 N are measured at E( 3 He)=40 MeV. The analysis of the data is carried out within the modified diffraction model (MDM) and distorted wave Born approximation (DWBA). Enhanced rms radii were obtained for the ground, 2 − (1.19 MeV), and 1 − (1.80 MeV) states. We revealed that 12 B, 12 N, and 12 C in the IAS with T=1, and spin-parities 2 − and 1 − have increased radii and exhibit properties of neutron and proton halo states.

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“…To study 12 N states, this method can be applied to the reaction ( 3 He,t). Its first application made it possible to determine the proton halo in an unbound state of 13 N [7].…”

Section: N Statesmentioning

confidence: 99%

Triplet ¹²B–¹²C–¹²N: Search for States with Halo

Danilov

Demyanova

Ogloblin

et al. 2020

Proceedings of 13th International Conference on Nucleus-Nucleus Collisions

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Previously in [1] neutron halo was confirmed for the 2¯, 1.67 MeV and 1¯, 2.62 MeV states in 12 B on base of Asymptotic Normalization Coefficients (ANC) method analysis of the obtained experimental data. An unexpected result was received for the unbound 3¯, 3.39 MeV state. Its halo radius was found to be increased and equal to ~ 5.9 fm. This result can be considered as an evidence of the halo-like structure in this 12 B state. It should be noted that last neutron in this state has a non-zero orbital momentum (l=2). So question arises about possible existence of states with halo in other members of the isobaric triplet 12 B-12 C-12 N. We can expect the formation of a proton halo in the 2¯, 1.19 MeV and 1¯, 1.80 MeV states of 12 N and 2¯, 16.62 MeV and 1¯, 17.23 MeV states of 12 C. To check this prediction preliminary Modified Diffraction Model (MDM) analysis of existing (3 He,t) and (3 He, 3 He') experimental data was done.

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Proton halo in the 13N nucleus

Cited by 12 publications

References 22 publications

Neutron halos in the excited states of B12

Neutron halos in the excited states of B12

States of the 12N Nucleus with Increased Radii

Triplet ¹²B–¹²C–¹²N: Search for States with Halo

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Proton halo in the 13N nucleus

Cited by 12 publications

References 22 publications

Neutron halos in the excited states of B12

Neutron halos in the excited states of B12

States of the 12N Nucleus with Increased Radii

Triplet 12B–12C–12N: Search for States with Halo

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Product

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Triplet ¹²B–¹²C–¹²N: Search for States with Halo