H-6 states studied in the H-2(He-8, He-4) reaction and evidence
of an extremely correlated character of the( 5)H ground state

J 2022

H-6 states studied in the H-2(He-8, He-4) reaction and evidence of an extremely correlated character of the( 5)H ground state

NIKOLSKII, E. Yu., Ivan MUZALEVSKII, Andrey BEZBAKH, Vratislav CHUDOBA, S. A. KRUPKO et. al.

Basic information

Original name

H-6 states studied in the H-2(He-8, He-4) reaction and evidence of an extremely correlated character of the( 5)H ground state

Authors

NIKOLSKII, E. Yu., Ivan MUZALEVSKII (643 Russian Federation, belonging to the institution), Andrey BEZBAKH (643 Russian Federation, belonging to the institution), Vratislav CHUDOBA (203 Czech Republic, belonging to the institution), S. A. KRUPKO, S. G. BELOGUROV, D. BIARE, 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, Yu. PARFENOVA, W. PIATEK, A.M. QUYNH, V. N. SCHETININ, A. SERIKOV, S. I. SIDORCHUK, Pavel SHAROV (643 Russian Federation, belonging to the institution), N. B. SHULGINA, R. S. SLEPNEV, S. V. STEPANTSOV, A.. SWIERCZ, P. SZYMKIEWICZ, G. M. TER-AKOPIAN, R. WOLSKI, B. ZALEWSKI and M. V. ZHUKOV

Edition

Physical Review C, 2022, 2469-9985

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10304 Nuclear physics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

RIV identification code

RIV/47813059:19630/22:A0000197

Organization unit

Institute of physics in Opava

DOI

http://dx.doi.org/10.1103/PhysRevC.105.064605

UT WoS

000820341500001

Keywords in English

eutron-rich system;Acculinna-2; nuceli

Links

EF19_073/0016951, research and development project.

Změněno: 6/3/2023 14:36, Mgr. Pavlína Jalůvková

Abstract

V originále

The extremely neutron-rich system 6H was studied in the direct 2H(8He, 4He) 6H transfer reaction with a 26A MeV secondary 8He beam. The measured missing mass spectrum shows a broad bump at ???4???8 MeV above the 3H +3n decay threshold. This bump can be interpreted as a broad resonant state in 6H at 6.8(5) MeV. The population cross section of such a presumably p-wave state (or it may be few overlapping states) in the energy range from 4 to 8 MeV is d??/d???c.m. ??? 190+40???80 ??b/sr in the angular range 5??? < ??c.m. < 16???. The obtained missing mass spectrum is practically free of 6H events below 3.5 MeV (d??/d???c.m. < 5 ??b/sr in the same angular range). The steep rise of the 6H missing mass spectrum at ???3 MeV allows us to derive the lower limit for the possible resonant-state energy in 6H to be 4.5(3) MeV. According to the paring energy estimates, such a 4.5(3) MeV resonance is a realistic candidate for the 6H ground state (g.s.). The obtained results confirm that the decay mechanism of the 7H g.s. (located at 2.2 MeV above the 3H+4n threshold) is the ???true??? (or simultaneous) 4n emission. The resonance energy profiles and the momentum distributions of fragments of the sequential 6H??? 5H(g.s.)+n??? 3H +3n decay were analyzed by the theoretically updated direct four-body-decay and sequential-emission mechanisms. The measured momentum distributions of the 3H fragments in the 6H rest frame indicate very strong ???dineutron-type??? correlations in the 5H ground state decay.

Citovat

NIKOLSKII, E. Yu., Ivan MUZALEVSKII, Andrey BEZBAKH, Vratislav CHUDOBA, S. A. KRUPKO, S. G. BELOGUROV, D. BIARE, 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, Yu. PARFENOVA, W. PIATEK, A.M. QUYNH, V. N. SCHETININ, A. SERIKOV, S. I. SIDORCHUK, Pavel SHAROV, N. B. SHULGINA, R. S. SLEPNEV, S. V. STEPANTSOV, A.. SWIERCZ, P. SZYMKIEWICZ, G. M. TER-AKOPIAN, R. WOLSKI, B. ZALEWSKI and M. V. ZHUKOV. H-6 states studied in the H-2(He-8, He-4) reaction and evidence of an extremely correlated character of the( 5)H ground state. Physical Review C. 2022, vol. 105, No 6, p. "064605-1"-"064605-15", 15 pp. ISSN 2469-9985. Available from: https://dx.doi.org/10.1103/PhysRevC.105.064605.

@article{65441,
   author = {Nikolskii, E. Yu. and Muzalevskii, Ivan and Bezbakh, Andrey and Chudoba, Vratislav and Krupko, S. A. and Belogurov, S. G. and Biare, D. 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 Parfenova, Yu. and Piatek, W. and Quynh, A.M. and Schetinin, V. N. and Serikov, A. and Sidorchuk, S. I. and Sharov, Pavel and Shulgina, N. B. and Slepnev, R. S. and Stepantsov, S. V. and Swiercz, A.. and Szymkiewicz, P. and TerandAkopian, G. M. and Wolski, R. and Zalewski, B. and Zhukov, M. V.},
   article_number = {6},
   doi = {http://dx.doi.org/10.1103/PhysRevC.105.064605},
   keywords = {eutron-rich system;Acculinna-2; nuceli},
   language = {eng},
   issn = {2469-9985},
   journal = {Physical Review C},
   title = {H-6 states studied in the H-2(He-8, He-4) reaction and evidence of an extremely correlated character of the( 5)H ground state},
   url = {https://journals.aps.org/prc/abstract/10.1103/PhysRevC.105.064605},
   volume = {105},
   year = {2022}
}

TY  - JOUR
ID  - 65441
AU  - Nikolskii, E. Yu. - Muzalevskii, Ivan - Bezbakh, Andrey - Chudoba, Vratislav - Krupko, S. A. - Belogurov, S. G. - Biare, D. - 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. - Parfenova, Yu. - Piatek, W. - Quynh, A.M. - Schetinin, V. N. - Serikov, A. - Sidorchuk, S. I. - Sharov, Pavel - Shulgina, N. B. - Slepnev, R. S. - Stepantsov, S. V. - Swiercz, A.. - Szymkiewicz, P. - Ter-Akopian, G. M. - Wolski, R. - Zalewski, B. - Zhukov, M. V.
PY  - 2022
TI  - H-6 states studied in the H-2(He-8, He-4) reaction and evidence of an extremely correlated character of the( 5)H ground state
JF  - Physical Review C
VL  - 105
IS  - 6
SP  - "064605-1"-"064605-15"
EP  - "064605-1"-"064605-15"
SN  - 24699985
KW  - eutron-rich system;Acculinna-2
KW  - nuceli
UR  - https://journals.aps.org/prc/abstract/10.1103/PhysRevC.105.064605
N2  - The extremely neutron-rich system 6H was studied in the direct 2H(8He, 4He) 6H transfer reaction with a 26A MeV secondary 8He beam. The measured missing mass spectrum shows a broad bump at ???4???8 MeV above the 3H +3n decay threshold. This bump can be interpreted as a broad resonant state in 6H at 6.8(5) MeV. The population cross section of such a presumably p-wave state (or it may be few overlapping states) in the energy range from 4 to 8 MeV is d??/d???c.m. ??? 190+40???80 ??b/sr in the angular range 5??? < ??c.m. < 16???. The obtained missing mass spectrum is practically free of 6H events below 3.5 MeV (d??/d???c.m. < 5 ??b/sr in the same angular range). The steep rise of the 6H missing mass spectrum at ???3 MeV allows us to derive the lower limit for the possible resonant-state energy in 6H to be 4.5(3) MeV. According to the paring energy estimates, such a 4.5(3) MeV resonance is a realistic candidate for the 6H ground state (g.s.). The obtained results confirm that the decay mechanism of the 7H g.s. (located at 2.2 MeV above the 3H+4n threshold) is the ???true??? (or simultaneous) 4n emission. The resonance energy profiles and the momentum distributions of fragments of the sequential 6H??? 5H(g.s.)+n??? 3H +3n decay were analyzed by the theoretically updated direct four-body-decay and sequential-emission mechanisms. The measured momentum distributions of the 3H fragments in the 6H rest frame indicate very strong ???dineutron-type??? correlations in the 5H ground state decay.
ER  -

NIKOLSKII, E. Yu., Ivan MUZALEVSKII, Andrey BEZBAKH, Vratislav CHUDOBA, S. A. KRUPKO, S. G. BELOGUROV, D. BIARE, 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, Yu. PARFENOVA, W. PIATEK, A.M. QUYNH, V. N. SCHETININ, A. SERIKOV, S. I. SIDORCHUK, Pavel SHAROV, N. B. SHULGINA, R. S. SLEPNEV, S. V. STEPANTSOV, A.. SWIERCZ, P. SZYMKIEWICZ, G. M. TER-AKOPIAN, R. WOLSKI, B. ZALEWSKI and M. V. ZHUKOV. H-6 states studied in the H-2(He-8, He-4) reaction and evidence of an extremely correlated character of the( 5)H ground state. \textit{Physical Review C}. 2022, vol.~105, No~6, p.~''064605-1''-''064605-15'', 15 pp. ISSN~2469-9985. Available from: https://dx.doi.org/10.1103/PhysRevC.105.064605.

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