9 results on '"I. A. Muzalevskii"'
Search Results
2. Study of 10Li Low Energy Spectrum in the 2H(9Li, p) Reaction
- Author
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A. M. Quynh, S. I. Sidorchuk, S. G. Belogurov, P. G. Sharov, W. Piatek, A. Serikov, E. Yu. Nikolskii, A. S. Fomichev, S. V. Stepantsov, S. A. Krupko, P. Szymkiewicz, R. Wolski, E. M. Gazeeva, B. Zalewski, G. M. Ter-Akopian, A. V. Gorshkov, G. Kaminski, M. S. Golovkov, A. Swiercz, I. A. Muzalevskii, D. Biare, A. A. Bezbakh, V. Chudoba, Yu. L. Parfenova, B. Mauyey, and R. S. Slepnev
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010302 applied physics ,Nuclear reaction ,Physics ,010308 nuclear & particles physics ,Nuclear Theory ,Spectrum (functional analysis) ,Hadron ,General Physics and Astronomy ,01 natural sciences ,Coincidence ,Nuclear physics ,Recoil ,Low energy ,0103 physical sciences ,Neutron ,Center of mass ,Nuclear Experiment - Abstract
The one-neutron transfer 2H(9Li, p)10Li reaction has been investigated at 29 A MeV incident energy at the ACCULINNA-2 facility (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research). The setup has been used in order to detect the recoil protons at backward angles in coincidences with the outgoing 9Li and neutrons from the 10Li decay at forward angles. This setup allows to study the 10Li emitted in the crucial region at forward angles in the center of mass. The preliminary results in the part of the analysis of double proton–9Li coincidence are reported.
- Published
- 2020
3. Detection of the Low Energy Recoil 3He in the Reaction 2H(8He,3He)7H
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A. V. Gorshkov, S. I. Sidorchuk, A. Serikov, V. Chudoba, S. V. Stepantsov, A. M. Quynh, Yu. L. Parfenova, E. Yu. Nikolskii, S. A. Krupko, I. G. Mukha, W. Piatek, O. Kiselev, S. G. Belogurov, B. Zalewski, M. Yu. Kozlov, G. Kaminski, I. A. Muzalevskii, B. Mauyey, G. M. Ter-Akopian, A. S. Fomichev, D. A. Kostyleva, R. S. Slepnev, E. M. Gazeeva, A. Swiercz, R. Wolski, D. Biare, A. A. Bezbakh, M. S. Golovkov, V. N. Schetinin, P. G. Sharov, P. Szymkiewicz, and L. V. Grigorenko
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010302 applied physics ,Normalization (statistics) ,Physics ,010308 nuclear & particles physics ,Detector ,Hadron ,General Physics and Astronomy ,01 natural sciences ,law.invention ,Ion ,Telescope ,Nuclear physics ,Recoil ,Deuterium ,law ,0103 physical sciences ,Energy (signal processing) - Abstract
Investigation of the 7H-system in the experiment conducted at the fragment separator ACCULINNA-2 in the 8He(2H,3He)7H reaction requires to detect the recoil 3He ions with energy down to 6 MeV. For this purpose two $$\Delta E{\text{—}}E$$ particle telescopes are used, with each telescope having in front a thin (20-μm) Si strip detector ($$\Delta E{\text{—}}SSD$$). The maps of thickness heterogeneity of the thin detectors were determined by measuring the energy losses of the 226Ra α-particles. The adopted thickness normalization method provides a good identification of the 3He nuclei being recorded in the presence of a high 4He background. Two approaches were used for calculating the energy losses of the identified 3He and 4He reaction ejectiles and reconstructing their energy values available at the exit from the deuterium target. The developed techniques were applied for the 7H missing-mass reconstruction.
- Published
- 2020
4. The First Experiments with the New ACCULINNA-2 Fragment Separator
- Author
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I. A. Muzalevskii, E. Yu. Nikolskii, E. M. Gazeeva, B. Zalewski, G. Kaminski, V. Chudoba, Yu. L. Parfenova, R. Wolski, S. A. Krupko, S. I. Sidorchuk, S. G. Belogurov, G. M. Ter-Akopian, A. V. Gorshkov, A. A. Bezbakh, R. S. Slepnev, L. V. Grigorenko, P. G. Sharov, and A. S. Fomichev
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010302 applied physics ,Nuclear reaction ,Physics ,Radioactive ion beams ,010308 nuclear & particles physics ,Cyclotron ,General Physics and Astronomy ,01 natural sciences ,law.invention ,Nuclear physics ,Beamline ,law ,0103 physical sciences ,Physics::Accelerator Physics ,Heavy ion ,Nuclear Experiment ,Nucleon ,Separator (electricity) - Abstract
Characteristics of a new separator of radioactive ion beams (RIBs) are described. It was recently commissioned at the Flerov Laboratory of Nuclear Reactions (FLNR JINR) and is in operation at the primary beam line of the U-400M heavy ion cyclotron providing RIBs in energy range of 10–50 MeV/nucleon. Preliminary results obtained in the first experiments performed with this separator in 2018 are presented. A medium-term program of scientific research is discussed.
- Published
- 2019
5. Resonant states in H7 : Experimental studies of the H2(He8,He3) reaction
- Author
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A. M. Quynh, N. B. Shulgina, B. Mauyey, V. N. Schetinin, S. G. Belogurov, B. Zalewski, S. I. Sidorchuk, G. Kaminski, D. A. Kostyleva, I. G. Mukha, W. Piatek, G. M. Ter-Akopian, I. A. Muzalevskii, E. Yu. Nikolskii, A. A. Bezbakh, S. A. Krupko, Yu. L. Parfenova, S. V. Stepantsov, A. V. Gorshkov, R. Wolski, A. Swiercz, P. G. Sharov, A. S. Fomichev, V. Chudoba, O. Kiselev, P. Szymkiewicz, L. V. Grigorenko, E. M. Gazeeva, D. Biare, A. Serikov, M. Yu. Kozlov, Mikhail V. Zhukov, and R. S. Slepnev
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Physics ,Atomic physics - Published
- 2021
6. Mass measurements of As, Se, and Br nuclei, and their implication on the proton-neutron interaction strength toward the N=Z line
- Author
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Emma Haettner, Zygmunt Patyk, Mikhail I. Yavor, Daler Amanbayev, D. Nichita, Christoph Scheidenberger, S. Pietri, Timo Dickel, Sönke Beck, Helmut Weick, D. A. Kostyleva, A. A. Bezbakh, Anu Kankainen, Jean-Paul Hucka, O. Charviakova, S. A. Krupko, G. Stanic, C. Nociforo, S. Purushothaman, I. A. Muzalevskii, Julian Bergmann, M. N. Harakeh, P. G. Sharov, Nasser Kalantar-Nayestanaki, M. Dehghan, Paul Constantin, R. Knöbel, V. Chudoba, Christine Hornung, M. Vencelj, A. State, O. Hall, G. Kripko-Koncz, Moritz P. Reiter, A. Mollaebrahimi, M. Pfützner, S. Ayet San Andrés, Wolfgang R. Plaß, F. Schirru, N. Kurkova, L. Gröf, L. V. Grigorenko, N. Kuzminchuk, D. L. Balabanski, A. S. Fomichev, J. Zhao, Y. K. Tanaka, O. Kiselev, Hans Geissel, Z. Brencic, Israel Mardor, I. Mukha, H. Roesch, Ivan Miskun, S. Bagchi, A. Spataru, Research unit Nuclear & Hadron Physics, and Energy and Sustainability Research Institute Groni
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nucl-th ,Nuclear Theory ,FOS: Physical sciences ,Interaction strength ,nucl-ex ,Mass spectrometry ,01 natural sciences ,7. Clean energy ,arseeni ,Ion ,Nuclear Theory (nucl-th) ,Nuclear physics ,Fragmentation (mass spectrometry) ,0103 physical sciences ,ddc:530 ,Neutron ,bromi ,Nuclear Experiment (nucl-ex) ,010306 general physics ,Nuclear Experiment ,Physics ,Isotope ,010308 nuclear & particles physics ,Mass measurement ,Atomic mass ,seleeni ,ydinfysiikka - Abstract
Mass measurements of the $^{69}$As, $^{70,71}$Se and $^{71}$Br isotopes, produced via fragmentation of a $^{124}$Xe primary beam at the FRS at GSI, have been performed with the multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) of the FRS Ion Catcher with an unprecedented mass resolving power of almost 1,000,000. For the $^{69}$As isotope, this is the first direct mass measurement. A mass uncertainty of 22 keV was achieved with only 10 events. For the $^{70}$Se isotope, a mass uncertainty of 2.6 keV was obtained, corresponding to a relative accuracy of $\delta$m/m = 4.0$\times 10^{-8}$, with less than 500 events. The masses of the $^{71}$Se and $^{71}$Br isotopes were measured with an uncertainty of 23 and 16 keV, respectively. Our results for the $^{70,71}$Se and $^{71}$Br isotopes agree with the 2016 Atomic Mass Evaluation, and our result for the $^{69}$As isotope resolves the discrepancy between previous indirect measurements. We measured also the mass of $^{14}$N$^{15}$N$^{40}$Ar (A=69) with a relative accuracy of $\delta$m/m = 1.7$\times 10^{-8}$, the highest yet achieved with a MR-TOF-MS. Our results show that the measured restrengthening of the proton-neutron interaction ($\delta$V$_{pn}$) for odd-odd nuclei at the N=Z line above Z=29 (recently extended to Z=37) is hardly evident at N-Z=2, and not evident at N-Z=4. Nevertheless, detailed structure of $\delta$V$_{pn}$ along the N-Z=2 and N-Z=4 lines, confirmed by our mass measurements, may provide a hint regarding the ongoing $\approx$500 keV discrepancy in the mass value of the $^{70}$Br isotope, which prevents including it in the world average of ${Ft}$-value for superallowed 0$^+\rightarrow$ 0$^+$ $\beta$ decays. The reported work sets the stage for mass measurements with the FRS Ion Catcher of nuclei at and beyond the N=Z line in the same region of the nuclear chart, including the $^{70}$Br isotope., Comment: 11 pages, 4 figures, accepted for publication at Physical Review C
- Published
- 2021
7. Evidence for the First Excited State of H7
- Author
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R. S. Slepnev, L. V. Grigorenko, A. M. Quynh, I A Muzalevskii, E. M. Gazeeva, S. I. Sidorchuk, V. Chudoba, Mikhail V. Zhukov, D. Biare, W. Piatek, A A Bezbakh, B. Zalewski, A. V. Gorshkov, G. Kaminski, B. Mauyey, O. Kiselev, A. S. Fomichev, M. Yu. Kozlov, V. N. Schetinin, S. A. Krupko, S. G. Belogurov, I. G. Mukha, A. Serikov, Yu. L. Parfenova, P G Sharov, R. Wolski, P. Szymkiewicz, S. V. Stepantsov, E. Yu. Nikolskii, G. M. Ter-Akopian, A. Swiercz, and D. A. Kostyleva
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Physics ,education.field_of_study ,Angular range ,Mass energy ,Population ,General Physics and Astronomy ,01 natural sciences ,Cross section (physics) ,Excited state ,0103 physical sciences ,Mass spectrum ,Atomic physics ,010306 general physics ,Ground state ,education ,Beam (structure) - Abstract
The H7 system was populated in the H2(He8,He3)H7 reaction with a 26 AMeV He8 beam. The H7 missing mass energy spectrum, the H3 energy and angular distributions in the H7 decay frame were reconstructed. The H7 missing mass spectrum shows a peak, which can be interpreted either as unresolved 5/2+ and 3/2+ doublet or one of these states at 6.5(5) MeV. The data also provide indications of the 1/2+ ground state of H7 located at 1.8(5) MeV with quite a low population cross section of ∼25 μb/sr within angular range θc.m.≃(17°-27°).
- Published
- 2020
8. Evidence for the First Excited State of ^{7}H
- Author
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A A, Bezbakh, V, Chudoba, S A, Krupko, S G, Belogurov, D, Biare, A S, Fomichev, E M, Gazeeva, A V, Gorshkov, L V, Grigorenko, G, Kaminski, O A, Kiselev, D A, Kostyleva, M Yu, Kozlov, B, Mauyey, I, Mukha, I A, Muzalevskii, E Yu, Nikolskii, Yu L, Parfenova, W, Piatek, A M, Quynh, V N, Schetinin, A, Serikov, S I, Sidorchuk, P G, Sharov, R S, Slepnev, S V, Stepantsov, A, Swiercz, P, Szymkiewicz, G M, Ter-Akopian, R, Wolski, B, Zalewski, and M V, Zhukov
- Abstract
The ^{7}H system was populated in the ^{2}H(^{8}He,^{3}He)^{7}H reaction with a 26 AMeV ^{8}He beam. The ^{7}H missing mass energy spectrum, the ^{3}H energy and angular distributions in the ^{7}H decay frame were reconstructed. The ^{7}H missing mass spectrum shows a peak, which can be interpreted either as unresolved 5/2^{+} and 3/2^{+} doublet or one of these states at 6.5(5) MeV. The data also provide indications of the 1/2^{+} ground state of ^{7}H located at 1.8(5) MeV with quite a low population cross section of ∼25 μb/sr within angular range θ_{c.m.}≃(17°-27°).
- Published
- 2019
9. Study of the Silicon Detectors for Time-of-Flight Measurements at the Super-FRS Facility and Expert Experiments at FAIR
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C. Scheidenberger, I. A. Muzalevskii, P. G. Sharov, I. G. Mukha, V. Eremin, D. Kostyleva, A. S. Fomichev, A. V. Gorshkov, S. A. Krupko, V. Chudoba, A. A. Bezbakh, and O. Kiselev
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Physics ,Time of flight ,Silicon ,chemistry ,business.industry ,Detector ,General Physics and Astronomy ,chemistry.chemical_element ,Aerospace engineering ,business - Published
- 2018
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