Investigations
of Neutron Nuclear Interactions
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Leader: |
E.V. Lychagin |
Deputies: |
Yu.N.
Kopatch |
Participating
countries and international organizations:
Albania, Australia, Austria, Azerbaijan, Belarus, Belgium, Bulgaria, CERN, China, Croatia, Czech Republic, Egypt, Finland, France, Georgia, Germany, Hungary, IAEA. India, Italy, Japan, Kazakhstan, Moldova, Mongolia, North Macedonia, Norway, Poland, Republic of Korea, Romania, Russia, Serbia, Slovakia, Slovenia, South Africa, Switzerland, Thailand, Turkey, Ukraine, USA, Uzbekistan, Vietnam.
Issues
addressed and main goals of research:
Experimental and theoretical investigations of symmetry breaking effects in reactions with neutrons and fundamental properties of the neutron to test the parameters of the Standard Model and search for "new physics". Investigation of the properties of excited nuclei, reactions with emission of charged particles, fission physics. Obtaining of relevant data for astrophysics, nuclear power engineering and nuclear waste transmutation problem using neutron- and gamma-induced reactions. Application of neutron physics methods in other fields of science and technology. Development and construction of detectors of neutrons and other ionizing radiation, as well as applied methods in nuclear physics with neutrons. Development of the Intense REsonance Neutron Source (IREN) and the experimental base at the IREN and IBR-2 facilities.
Expected
results in the current year:
Investigations
of violations of fundamental symmetries
in neutron-nucleus
interactions and related data
Measurement of TRI and ROT effects for gamma-rays and neutrons in the fission of uranium by polarized neutrons.
Measurement of yields and angular correlations of light charged particles in ternary and quaternary fission of 252Cf using Timepix detectors.
Determination of characteristics of excitation levels of nuclei in the (n, 2n) and (n, n'γ) reactions with neutrons with an energy of 14 MeV.
Measurements of angular and energy distributions of prompt fission neutrons (PFN) in 235U(n,f) and 239Pu(n,f) reactions in the resonance region using a position-sensitive twin ionization chamber and 32 scintillation counters.
Determination of model concepts of modern values of the level density and radiation widths of nuclei of various shapes and types in the capture of slow neutrons.
Carrying out an experiment to search for a singlet deuteron.
Measurement of fast neutron cross sections for 6Li(n,α)3H and 91Zr(n,α)88Sr reactions.
Investigation of fundamental properties of the neutron, UCN physics:
Design and development of the necessary experimental equipment for realization of an experiment to measure the efficiency of extracting very cold neutrons from a source by a specially designed reflector.
Construction of a physical and mathematical model of propagation of slow neutrons in nanostructured diamond reflectors based on data of single small-angle scattering of cold neutrons.
Measurements of quasi-mirror reflection of VCN from a sample with crystallites of ~ 20 nm in size.
Design and construction of a new experimental setup for studying the recently observed phenomenon of nonstationary heating of UCNs on surface acoustic waves.
Development of the concept of a UCN source based on the idea of accumulating a pulsed neutron flux formed by a time lens.
Applied and methodological research:
Measurement of neutron fluxes and spectra by the counting and current method at beamline 1 of the IBR-2 reactor to simulate the possibility of measuring the neutron lifetime.
Development of a prototype setup for neutron polarization by transmission through a 3He target.
Carrying out vacuum and cryogenic tests of a cryostat with a superconducting magnet to create an all-wave neutron polarizer.
Development and testing of an elemental analysis technique using the tagged neutron method and high-resolution gamma-ray detectors.
Investigation with the use of the EG-5 accelerator of the optical and electronic properties of semiconductor materials under X-ray irradiation.
Development of a modernization project for the EG-5 accelerator and its infrastructure.
Neutron activation and resonance neutron analysis of archaeological, biological and environmental samples at the IREN facility and at beamlines 3 and 11b of the IBR-2 reactor.
Creation of a network database of neutron activation analysis to automate studies of the elemental composition of samples of various nature at INP (Alma-Ata, Kazakhstan) and organization of routine neutron activation analysis at the automated site created in 2017-2019 at INP.
Completion of modernization of REGATA facility at the IBR-2 reactor.
Determination of the elemental content of plant, biological, geological samples, as well as new materials, including nanomaterials, by means of the neutron activation analysis method at the IBR-2 reactor using the REGATA facility.
Determination of radiation hardness of clean materials.
The use of low-background gamma spectrometry and alpha spectrometry to analyze the content of radionuclides in environmental objects.
Development of the IREN facility:
Providing the neutron beam time from IREN for physical experiments.
List of projects: |
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Project |
Leader |
Priority |
1. |
TANGRA |
Yu.N. Kopatch |
1 (2014-2022) |
List of Activities: |
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Activity or Experiment |
Leaders |
Status |
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Laboratory
or other |
Main researchers |
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1. |
Investigations
of violations |
Yu.N. Kopatch |
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FLNP |
G.S. Ahmedov, D. Berikov, S.B. Borzakov, I.I. Chuprakov, G.V. Daniljan, S. Enkhbold, Fan Lyong Tuan, N.A. Fedorov, Yu.M. Gledenov, D.N. Grozdanov, N.A. Gundorin, A.P. Kobzev, M. Kulik, V.L. Kuznetsov, E.V.Kuznetsova, Zh.V. Mezentseva, S.V. Mironov, V.V. Novitsky, I.A. Oprea, K.D. Oprea, Yu.N. Pokotilovskij, A.B. Popov, P.V. Sedyshev, M.V. Sedysheva, O.V. Sidorova, N.V. Simbirtseva, V.R. Skoj, A.M. Suhovoj, S.A.Telezhnikov, T.Yu. Tretyakova, Vu Dyk Kong, Sh.S. Zeynalov, 24 engineers, 4 workers
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2. |
Investigation
of fundamental |
E.V. Lychagin |
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FLNP |
G.G. Bunatyan, T.L. Enik, A.I. Frank, W.I. Furman, S.V. Gorunov, G.V. Kulin, L.V. Mitsyna, A.Yu. Muzychka, A. Nesipbai, A.Yu. Nezvanov, Yu.N. Pokotilovskij, N.Yu. Rebrova, A.V. Strelkov, E.I. Sharapov, M.A. Zakharov, K.N. Zhernenkov, 3 engineers, 1 worker
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3. |
Applied research |
P.V. Sedyshev |
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FLNP |
M.V. Frontasyeva, A.P. Kobzev, Yu.N. Kopatch, W.I. Furman, V.N. Shvetsov, K.N. Vergel, D.S. Grozdov, I.I. Zinicovscaia, G.Y. Hristozova, N.S. Yushin, P.S. Nekhoroshkov, G.S. Ahmedov, N.V. Simbirtseva, S.B. Borzakov, N.A. Fedorov, D.N. Grozdanov, N.A. Gundorin, M. Kulik, Zh.V. Mezentseva, I.A. Oprea, K.D. Oprea, V.R. Skoj, A.Yu. Dmitriev, 22 engineers, 4 workers
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4. |
Development of the IREN facility |
V.N. Shvetsov |
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FLNP |
V.G. Pjataev, E.A. Golubkov, 17 engineers, 1 worker
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VBLHEP A.P. Sumbaev |
V.F. Minashkin, V.N. Zamrij, 3 engineers
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DLNP |
I.N. Meshkov
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5. |
Development
of experimental |
V.N. Shvetsov |
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FLNP |
A.A. Beliakov, E.V. Lychagin, V.G. Pyataev, P.V. Sedyshev, V.A. Trepalin, 15 engineers
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6. |
Modernization of EG-5 accelerator |
A.S. Doroshkevich |
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FLNP |
A.N. Likhachev, A.P. Kobzev, 4 engineers
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7. |
Project TANGRA |
Yu.N. Kopatch |
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FLNP |
F.Aliev, N.A. Fedorov, N.A. Gundorin, D.N. Grozdanov, C. Hramco, I.A. Oprea, K.D. Oprea, P.V. Sedyshev, V.R. Skoj, V.N. Shvetsov, T.Yu. Tretyakova
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VBLHEP |
U.Yu. Aleksakhin, S.V. Khabarov, Yu.N. Rogov, R.A. Salmin, M.G. Sapozhnikov, V.M. Slepnev, N.I. Zamjatin, E.V. Zubarev
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DLNP |
A.V. Krasnoperov, A.B. Sadovskii, A.V. Salamatin
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LRB |
G.N. Timoshenko
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Collaboration
Country or International Organization |
City |
Institute or laboratory |
Albania |
Tirana |
UT |
Armenia |
Yerevan |
SRCHCH |
Australia |
Melbourne |
Univ. |
Austria |
Innsbruck |
Univ. |
Azerbaijan |
Baku |
BSU |
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IGG ANAS |
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IRP ANAS |
Belarus |
Minsk |
INP BSU |
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SPMRC NASB |
Bulgaria |
Plovdiv |
PU |
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UFT |
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Sofia |
IE BAS |
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INRNE BAS |
CERN |
Geneva |
CERN |
China |
Beijing |
IHEP CAS |
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Xi'an |
NINT |
Croatia |
Zagreb |
Oikon IAE |
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RBI |
Czech Republic |
Ostrava |
UO |
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VSB-TUO |
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Prague |
CEI |
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CTU |
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Rez |
CVR |
Egypt |
Alexandria |
Univ. |
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Cairo |
NRC |
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Giza |
CU |
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Mansoura |
MU |
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Shibin El Kom |
MU |
Finland |
Jyvaskyla |
UJ |
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Oulu |
UO |
France |
Cadarache |
CC CEA |
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Grenoble |
ILL |
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LPSC |
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Saclay |
LLB |
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Strasbourg |
IPHC |
Georgia |
Tbilisi |
AIP TSU |
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TSU |
Germany |
Darmstadt |
GSI |
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Dresden |
HZDR |
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Kleve |
HSRW |
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Mainz |
JGU |
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Munich |
TUM |
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Tubingen |
Univ. |
Hungary |
Budapest |
RKK OU |
IAEA |
Vienna |
IAEA |
India |
Varanasi |
BHU |
Italy |
Rome |
ENEA |
Japan |
Kyoto |
KSU |
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Tsukuba |
KEK |
Kazakhstan |
Almaty |
INP |
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Kyzlorda |
KazSRIRG |
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Nur-Sultan |
ENU |
Moldova |
Chisinau |
IC ASM |
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IMB ASM |
Mongolia |
Ulaanbaatar |
CGL |
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NRC NUM |
North Macedonia |
Skopje |
UKiM |
Norway |
Trondheim |
NTNU |
Poland |
Gdansk |
GUT |
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Krakow |
INP PAS |
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Lodz |
UL |
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Lublin |
UMCS |
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Opole |
UO |
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Otwock (Swierk) |
NCBJ |
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Poznan |
AMU |
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Wroclaw |
UW |
Republic of Korea |
Daejeon |
KAERI |
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Pohang |
PAL |
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Seoul |
Dawonsys |
Romania |
Baia Mare |
TUCN-NUCBM |
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Bucharest |
IFIN-HH |
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IGR |
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UB |
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UPB |
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Cluj-Napoca |
INCDTIM |
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Constanta |
UOC |
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Galati |
UG |
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Iasi |
NIRDTP |
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Magurele |
ISS |
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NIMP |
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Oradea |
UO |
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Pitesti |
ICN |
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Ramnicu Valcea |
I.C.S.I. |
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Sibiu |
ULBS |
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Targoviste |
UVT |
Russia |
Borok |
IBIW RAS |
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Dubna |
Diamant |
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Dubna State Univ. |
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Gatchina |
NRC KI PNPI |
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Grozny |
CSPU |
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Irkutsk |
LI SB RAS |
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Ivanovo |
ISUCT |
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Izhevsk |
UdSU |
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Moscow |
GIN RAS |
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GPI RAS |
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IKI RAS |
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IPCE RAS |
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ITEP |
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MSU |
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NRC KI |
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SIAS |
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SINP MSU |
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VNIIA |
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Moscow, Troitsk |
INR RAS |
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Nizhny Novgorod |
IPM RAS |
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Obninsk |
IPPE |
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Sevastopol |
IBSS |
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St. Petersburg |
Botanic garden BIN RAS |
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FIP |
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Ioffe Institute |
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KRI SPMU |
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SPSFTU |
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Tula |
TSU |
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Vladikavkaz |
NOSU |
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Voronezh |
VSU |
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Yekaterinburg |
UrFU |
Serbia |
Belgrade |
IPB |
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Univ. |
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Novi Sad |
UNS |
Slovakia |
Bratislava |
CU |
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IEE SAS |
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ILE SAS |
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IP SAS |
Slovenia |
Ljubljana |
GeoSS |
South Africa |
Bellville |
UWC |
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Pretoria |
UNISA |
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Stellenbosch |
SU |
Switzerland |
Villigen |
PSI |
Thailand |
Hat Yai |
PSU |
Turkey |
Canakkale |
COMU |
Ukraine |
Berdyansk |
BSPU |
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Donetsk |
DonIPE |
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Kharkov |
ISMA NASU |
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NSC KIPT |
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Kiev |
KINR NASU |
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NUK |
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Uzhhorod |
IEP NASU |
USA |
Durham, NC |
Duke |
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Los Alamos, NM |
LANL |
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Oak Ridge, TN |
ORNL |
Uzbekistan |
Tashkent |
INP AS RUz |
Vietnam |
Hanoi |
IOP VAST |
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VNU |
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