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.

Základní údaje

Originální název

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

Autoři

NIKOLSKII, E. Yu., Ivan MUZALEVSKII (643 Rusko, domácí), Andrey BEZBAKH (643 Rusko, domácí), Vratislav CHUDOBA (203 Česká republika, domácí), 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 Rusko, domácí), N. B. SHULGINA, R. S. SLEPNEV, S. V. STEPANTSOV, A.. SWIERCZ, P. SZYMKIEWICZ, G. M. TER-AKOPIAN, R. WOLSKI, B. ZALEWSKI a M. V. ZHUKOV

Vydání

Physical Review C, 2022, 2469-9985

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10304 Nuclear physics

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Kód RIV

RIV/47813059:19630/22:A0000197

Organizační jednotka

Fyzikální ústav v Opavě

DOI

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

UT WoS

000820341500001

Klíčová slova anglicky

eutron-rich system;Acculinna-2; nuceli

Štítky

FÚ, RIV23, SGF-2-2020

Příznaky

Mezinárodní význam, Recenzováno

Návaznosti

EF19_073/0016951, projekt VaV.

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

Anotace

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 a 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, roč. 105, č. 6, s. "064605-1"-"064605-15", 15 s. ISSN 2469-9985. Dostupné z: 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 a 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, roč.~105, č.~6, s.~''064605-1''-''064605-15'', 15 s. ISSN~2469-9985. Dostupné z: https://dx.doi.org/10.1103/PhysRevC.105.064605.

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