Population of tetraneutron continuum in reactions of 8He on
deuterium

J 2025

Population of tetraneutron continuum in reactions of 8He on deuterium

MUZALEVSKII, Ivan; N. B. SHULGINA; Andrey BEZBAKH; Vratislav CHUDOBA; S. A. KRUPKO et al.

Basic information

Original name

Population of tetraneutron continuum in reactions of 8He on deuterium

Authors

Edition

Physical Review C, 2025, 2469-9985

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10308 Astronomy

Country of publisher

United States of America

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 3.400 in 2024

Organization unit

Institute of physics in Opava

DOI

https://doi.org/10.1103/PhysRevC.111.014612

UT WoS

001440880100001

EID Scopus

2-s2.0-85219058165

Keywords in English

Cross section;Energy levels;Light nuclei;Netron;Multineutrons;Resonances;proton;State;6He;Halo

Abstract

In the original language

Search for the population of the low-energy continuum of a tetraneutron system was performed for reactions of a 8He beam on a deuterium target. These studies are based on the data [I. A. Muzalevskii et al., Phys. Rev. C 103, 044313 (2021)] previously used for the studies of 7H and 6H in the 2H(8He, 3He)7H and 2H(8He, 4He)6H reactions. Evidence for a hump in the 4n continuum at 3.5 +/- 0.7 and 3.2 +/- 0.8 MeV was observed in the 2H(8He, 6Li)4n and 2H(8He, 3He)7H-* 3H+4n reactions, respectively. The observed statistics is quite low (6 events and up to 40 events) corresponding to very low cross sections of few microbarns or tens of microbarns. The background conditions for the 2H(8He, 6Li)4n reaction are shown to be good, favoring the physical nature of the observed events. The 2H(8He, 3He)7H-* 3H +4n process transforms to the 2H(8He, 6Li & lowast;)4n reaction in the limit of the highest 7H decay energies. The population of the low-energy region in the 4n spectrum is found to be perfectly correlated with the population of the lowest 6Li state in the 3He+3H continuum with E & lowast; = 18 MeV. Theoretical calculations of 8He in five-body alpha + 4n and of 4n in four-body hyperspherical models are presented. The 8He wave function is shown to contain strong specific correlations, which may give rise to very low-energy structures in the tetraneutron continuum in extreme-peripheral reaction scenarios.

Cite

MUZALEVSKII, Ivan; N. B. SHULGINA; Andrey BEZBAKH; Vratislav CHUDOBA; S. A. KRUPKO; S. G. BELOGUROV; D. BIARE; I. A. EGOROVA; A. S. FOMICHEV; E. M. GAZEEVA; A. V. GORSHKOV; L. V. GRIGORENKO; G. KAMINSKI; M. KHIRK; O. KISELEV; D. A. KOSTYLEVA; M. Yu. KOZLOV; B. MAUYEY; I. MUKHA; E. Yu. NIKOLSKII; Yu. PARFENOVA; W. PIATEK; A. M. QUYNH; A. SERIKOV; S. I. SIDORCHUK; Pavel SHAROV; R. S. SLEPNEV; S. V. STEPANTSOV; A. SWIERCZ; P. SZYMKIEWICZ; G. M. TER-AKOPIAN and B. ZALEWSKI. Population of tetraneutron continuum in reactions of 8He on deuterium. Physical Review C. 2025, vol. 111, No 1, p. "014612-1"-"014612-12", 12 pp. ISSN 2469-9985. Available from: https://doi.org/10.1103/PhysRevC.111.014612.

@article{90444,
   author = {Muzalevskii, Ivan and Shulgina, N. B. and Bezbakh, Andrey and Chudoba, Vratislav and Krupko, S. A. and Belogurov, S. G. and Biare, D. and Egorova, I. A. and Fomichev, A. S. and Gazeeva, E. M. and Gorshkov, A. V. and Grigorenko, L. V. and Kaminski, G. and Khirk, M. and Kiselev, O. and Kostyleva, D. A. and Kozlov, M. Yu. and Mauyey, B. and Mukha, I. and Nikolskii, E. Yu. and Parfenova, Yu. and Piatek, W. and Quynh, A. M. and Serikov, A. and Sidorchuk, S. I. and Sharov, Pavel and Slepnev, R. S. and Stepantsov, S. V. and Swiercz, A. and Szymkiewicz, P. and TerandAkopian, G. M. and Zalewski, B.},
   article_number = {1},
   doi = {https://doi.org/10.1103/PhysRevC.111.014612},
   keywords = {Cross section;Energy levels;Light nuclei;Netron;Multineutrons;Resonances;proton;State;6He;Halo},
   language = {eng},
   issn = {2469-9985},
   journal = {Physical Review C},
   title = {Population of tetraneutron continuum in reactions of 8He on deuterium},
   url = {https://journals.aps.org/prc/abstract/10.1103/PhysRevC.111.014612},
   volume = {111},
   year = {2025}
}

TY  - JOUR
ID  - 90444
AU  - Muzalevskii, Ivan - Shulgina, N. B. - Bezbakh, Andrey - Chudoba, Vratislav - Krupko, S. A. - Belogurov, S. G. - Biare, D. - Egorova, I. A. - Fomichev, A. S. - Gazeeva, E. M. - Gorshkov, A. V. - Grigorenko, L. V. - Kaminski, G. - Khirk, M. - Kiselev, O. - Kostyleva, D. A. - Kozlov, M. Yu. - Mauyey, B. - Mukha, I. - Nikolskii, E. Yu. - Parfenova, Yu. - Piatek, W. - Quynh, A. M. - Serikov, A. - Sidorchuk, S. I. - Sharov, Pavel - Slepnev, R. S. - Stepantsov, S. V. - Swiercz, A. - Szymkiewicz, P. - Ter-Akopian, G. M. - Zalewski, B.
PY  - 2025
TI  - Population of tetraneutron continuum in reactions of 8He on deuterium
JF  - Physical Review C
VL  - 111
IS  - 1
SP  - "014612-1"-"014612-12"
EP  - "014612-1"-"014612-12"
SN  - 24699985
KW  - Cross section;Energy levels;Light nuclei;Netron;Multineutrons;Resonances;proton;State;6He;Halo
UR  - https://journals.aps.org/prc/abstract/10.1103/PhysRevC.111.014612
N2  - Search for the population of the low-energy continuum of a tetraneutron system was performed for reactions of a 8He beam on a deuterium target. These studies are based on the data [I. A. Muzalevskii et al., Phys. Rev. C 103, 044313 (2021)] previously used for the studies of 7H and 6H in the 2H(8He, 3He)7H and 2H(8He, 4He)6H reactions. Evidence for a hump in the 4n continuum at 3.5 +/- 0.7 and 3.2 +/- 0.8 MeV was observed in the 2H(8He, 6Li)4n and 2H(8He, 3He)7H-* 3H+4n reactions, respectively. The observed statistics is quite low (6 events and up to 40 events) corresponding to very low cross sections of few microbarns or tens of microbarns. The background conditions for the 2H(8He, 6Li)4n reaction are shown to be good, favoring the physical nature of the observed events. The 2H(8He, 3He)7H-* 3H +4n process transforms to the 2H(8He, 6Li & lowast;)4n reaction in the limit of the highest 7H decay energies. The population of the low-energy region in the 4n spectrum is found to be perfectly correlated with the population of the lowest 6Li state in the 3He+3H continuum with E & lowast; = 18 MeV. Theoretical calculations of 8He in five-body alpha + 4n and of 4n in four-body hyperspherical models are presented. The 8He wave function is shown to contain strong specific correlations, which may give rise to very low-energy structures in the tetraneutron continuum in extreme-peripheral reaction scenarios.
ER  -

MUZALEVSKII, Ivan; N. B. SHULGINA; Andrey BEZBAKH; Vratislav CHUDOBA; S. A. KRUPKO; S. G. BELOGUROV; D. BIARE; I. A. EGOROVA; A. S. FOMICHEV; E. M. GAZEEVA; A. V. GORSHKOV; L. V. GRIGORENKO; G. KAMINSKI; M. KHIRK; O. KISELEV; D. A. KOSTYLEVA; M. Yu. KOZLOV; B. MAUYEY; I. MUKHA; E. Yu. NIKOLSKII; Yu. PARFENOVA; W. PIATEK; A. M. QUYNH; A. SERIKOV; S. I. SIDORCHUK; Pavel SHAROV; R. S. SLEPNEV; S. V. STEPANTSOV; A. SWIERCZ; P. SZYMKIEWICZ; G. M. TER-AKOPIAN and B. ZALEWSKI. Population of tetraneutron continuum in reactions of 8He on deuterium. \textit{Physical Review C}. 2025, vol.~111, No~1, p.~''014612-1''-''014612-12'', 12 pp. ISSN~2469-9985. Available from: https://doi.org/10.1103/PhysRevC.111.014612.

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