6533b832fe1ef96bd1299c50
RESEARCH PRODUCT
Triplet 12B-12C-12N : Search for States with Halo
Andrey N. DanilovAlla S. DemyanovaAlexey A. OgloblinSergey A. GoncharovTatiana L. BelyaevaWladislaw H. Trzaskasubject
MDM modelNuclear Theoryasymptotic normalization coefficients neutron and proton haloradii of excited statesNuclear Experimentdescription
Previously in [1] neutron halo was confirmed for the 2¯, 1.67 MeV and 1¯, 2.62 MeV states in 12B 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 12B 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 12B–12C–12N. We can expect the formation of a proton halo in the 2¯, 1.19 MeV and 1¯, 1.80 MeV states of 12N and 2¯, 16.62 MeV and 1¯, 17.23 MeV states of 12C. To check this prediction preliminary Modified Diffraction Model (MDM) analysis of existing (3He, t) and (3He, 3He′) experimental data was done. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-01 |