Halo-like structure in 7He nucleus
Demyanova, A. S., Ogloblin, A. A., Chernishev, B.A., Goncharov, S. A., Gurov, Y. B., Lapushkin, S.V., Belyaeva, T. L., Danilov, A. N., Starastsin, V.I., & Trzaska, W. H. (2020). Halo-like structure in 7He nucleus. In INPC2019 : 27th International Nuclear Physics Conference (Article 012128). IOP Publishing Ltd. Journal of Physics : Conference Series, 1643. https://doi.org/10.1088/1742-6596/1643/1/012128
Julkaistu sarjassa
Journal of Physics : Conference SeriesTekijät
Päivämäärä
2020Tekijänoikeudet
© 2020 the Authors
A study of the neutron structure of the ground state of 7He has been performed by means of registration and analysis of the decay channels of the residual nuclei following absorption of stopped pions. In particular, the reaction 9Be (${\pi }_{}^{-},d$)X have been investigated where X denotes any system with five neutrons and two protons – the constituencies of a 7He nucleus. It was shown that the structure of 7He is determined by correlations of two neutrons in the states 6He (0+), 6He (2+) and one neutron in the shell p3/2. The 4He+3n structure is not manifested in the ground state of 7He. The obtained results are consistent with the known data on considerable mixture of configurations "6He in its ground and first excited states plus a neutron" in the ground state of 7He. Comparison of the diffraction components of the differential cross-sections of the charge-exchange reactions (t, 3He) measured on 6Li and 7Li allowed extracting the radius of particle-unstable nucleus 7He. The latter occurred to be approximately equal to those of 6He and 8He. The obtained result indicates to existence of the halo-like structure in 7He.
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Julkaisija
IOP Publishing LtdKonferenssi
International Nuclear Physics ConferenceKuuluu julkaisuun
INPC2019 : 27th International Nuclear Physics ConferenceISSN Hae Julkaisufoorumista
1742-6588Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/47780646
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This work was partly supported by grants 18-12-00312 of Russian Scientific Foundation.Lisenssi
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