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NSR database version of April 11, 2024.

Search: Author = A.N.Pirozhkov

Found 19 matches.

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2018SE09      Phys.Rev. C 97, 055503 (2018)

A.P.Serebrov, E.A.Kolomensky, A.K.Fomin, I.A.Krasnoshchekova, A.V.Vassiljev, D.M.Prudnikov, I.V.Shoka, A.V.Chechkin, M.E.Chaikovskiy, V.E.Varlamov, S.N.Ivanov, A.N.Pirozhkov, P.Geltenbort, O.Zimmer, T.Jenke, M.Van der Grinten, M.Tucker

Neutron lifetime measurements with a large gravitational trap for ultracold neutrons

RADIOACTIVITY 1n(β-); measured Iβ, T1/2 of free neutron, storage cycles for two different holding times, temperature dependence of the UCN storage time, inverse UCN loss rate, neutron count rates before (reactor cycle 179) and after (reactor cycle 181) using gravitationally trapped ultra-cold neutrons (UCN) at Institute Laue-Langevin (ILL) using the PF2 MAM UCN beam; deduced trap-neutron collision frequency, systematic error in T1/2 measurements using Monte Carlo simulations, influence of the residual gas on UCN storage. Comparison with previous experimental values in the last 17 years, and with evaluations by Particle Data Group. Discussed problem of a 3.9σ discrepancy between measurements of half-life of free neutron using neutrons in beams and those with stored ultracold neutrons (UCN).

doi: 10.1103/PhysRevC.97.055503
Citations: PlumX Metrics


2017SE25      JETP Lett. 106, 623 (2017)

A.P.Serebrov, E.A.Kolomenskiy, A.K.Fomin, I.A.Krasnoschekova, A.V.Vassiljev, D.M.Prudnikov, I.V.Shoka, A.V.Chechkin, M.E.Chaikovskii, V.E.Varlamov, S.N.Ivanov, A.N.Pirozhkov, P.Geltenbort, O.Zimmer, T.Jenke, M.Van der Grinten, M.Tucker

New measurement of the neutron lifetime with a large gravitational trap

RADIOACTIVITY 1NN(β-); measured decay products; deduced T1/2. Comparison with available data.

doi: 10.1134/S0021364017220143
Citations: PlumX Metrics


2015SE16      Phys.Rev. C 92, 055501 (2015)

A.P.Serebrov, E.A.Kolomenskiy, A.N.Pirozhkov, I.A.Krasnoschekova, A.V.Vassiljev, A.O.Polyushkin, M.S.Lasakov, A.N.Murashkin, V.A.Solovey, A.K.Fomin, I.V.Shoka, O.M.Zherebtsov, P.Geltenbort, S.N.Ivanov, O.Zimmer, E.B.Alexandrov, S.P.Dmitriev, N.A.Dovator

New search for the neutron electric dipole moment with ultracold neutrons at ILL

NUCLEAR MOMENTS 1n; measured Ramsey resonance curves, neutron electric dipole moment (EDM) using ultracold neutrons (UCN) from High-Flux Reactor of ILL-Grenoble and double-chamber magnetic resonance spectrometer developed at PNPI-Gatchina; deduced an upper limit of EDM. Discussed possibilities for further improvement.

doi: 10.1103/PhysRevC.92.055501
Citations: PlumX Metrics


2014SE08      JETP Lett. 99, 4 (2014)

A.P.Serebrov, E.A.Kolomenskiy, A.N.Pirozhkov, I.A.Krasnoschekova, A.V.Vassiljev, A.O.Polushkin, M.S.Lasakov, A.K.Fomin, I.V.Shoka, V.A.Solovey, O.M.Zherebtsov, P.Geltenbort, S.N.Ivanov, O.Zimmer, E.B.Alexandrov, S.P.Dmitriev, N.A.Dovator

New measurements of the neutron electric dipole moment

NUCLEAR MOMENTS 1NN; measured frequencies of neutron precession; deduced electric dipole moment. Comparison with available data.

doi: 10.1134/S0021364014010111
Citations: PlumX Metrics


1996AL25      Yad.Fiz. 59, No 7, 1204 (1996); Phys.Atomic Nuclei 59, 1152 (1996)

I.S.Altarev, Yu.V.Borisov, N.V.Borovikova, A.I.Egorov, S.N.Ivanov, E.A.Kolomensky, M.S.Lasakov, V.M.Lobashev, V.A.Nazarenko, A.N.Pirozhkov, A.P.Serebrov, Yu.V.Sobolev, E.V.Shulgina

Search for the Neutron Electric Dipole Moment

NUCLEAR STRUCTURE 1n; analyzed data; deduced electric dipole moment upper limit, 90% confidence limit. Utra cold neutrons, magnetic resonance spectrometer.


1992AL02      Phys.Lett. 276B, 242 (1992)

I.S.Altarev, Yu.V.Borisov, N.V.Borovikova, S.N.Ivanov, E.A.Kolomensky, M.S.Lasakov, V.M.Lobashev, V.A.Nazarenko, A.N.Pirozhkov, A.P.Serebrov, Yu.V.Sobolev, E.V.Shulgina, A.I.Yegorov

New Measurement of the Electric Dipole Moment of the Neutron

NUCLEAR MOMENTS 1n; measured electric dipole moment. Stored ultracold neutrons, magnetic resonance setup.

doi: 10.1016/0370-2693(92)90571-K
Citations: PlumX Metrics


1992BA43      Phys.Lett. 289B, 17 (1992)

A.N.Bazhenov, L.A.Grigoreva, V.V.Ivanov, E.A.Kolomensky, V.M.Lobashev, V.A.Nazarenko, A.N.Pirozhkov, Yu.V.Sobolev

Circular Polarization of γ-Quanta in np → dγ Reactions with Polarized Neutrons

NUCLEAR REACTIONS 1H(polarized n, γ), E=cold neutron source; measured γ CP. High purity solid parahydrogen target, magnetic transmission polarimeters.

doi: 10.1016/0370-2693(92)91355-D
Citations: PlumX Metrics


1986AL35      Pisma Zh.Eksp.Teor.Fiz. 44, 360 (1986); JETP Lett.(USSR) 44. 460 (1986)

I.S.Altarev, Yu.V.Borisov, N.V.Borovikova, A.B.Brandin, A.I.Egorov, S.N.Ivanov, E.A.Kolomensky, M.S.Lasakov, V.M.Lobashev, A.N.Pirozhkov, A.P.Serebrov, Yu.V.Sobolev, R.R.Taldaev, B.V.Shulgina

Search for an Electric Dipole Moment of the Neutron

NUCLEAR MOMENTS 1n; measured electric dipole moment. Ultracold neutron confinement.


1984KN01      Nucl.Phys. A417, 209 (1984)

V.A.Knyazkov, E.A.Kolomensky, V.M.Lobashov, V.A.Nazarenko, A.N.Pirozhkov, A.I.Shably, E.V.Shulgina, Y.V.Sobolev, A.I.Yegorov

A New Experimental Study of the Circular Polarization of np Capture γ-Rays

NUCLEAR REACTIONS 1H(n, γ), E=thermal; measured γ CP.

doi: 10.1016/0375-9474(84)90505-0
Citations: PlumX Metrics


1983KN09      Pisma Zh.Eksp.Teor.Fiz. 38, 138 (1983); JETP Lett.(USSR) 38, 163 (1983)

V.A.Knyazkov, E.A.Kolomensky, V.M.Lobashev, V.A.Nazarenko, A.N.Pirozhkov, Yu.V.Sobolev, A.I.Shably, E.V.Shulgina

New Measurement of the Circular Polarization of γ Rays in the Reaction np → dγ

NUCLEAR REACTIONS 1H(n, γ), E=thermal; measured radiative capture γ CP upper limit.


1983VE09      Pisma Zh.Eksp.Teor.Fiz. 37, 410 (1983); JETP Lett.(USSR) 37, 487 (1983)

V.A.Vesna, E.A.Kolomensky, I.S.Okunev, A.N.Pirozhkov, L.M.Smotritsky, E.V.Shulgina, A.F.Kornyushkin, N.A.Titov, S.M.Solovev, V.M.Lobashev

P-Parity Nonconservation in the Total Cross Section for the Interaction of Thermal Neutrons with 233U

NUCLEAR REACTIONS 233U(polarized n, n), E=thermal; measured σ ratios for opposite neutron helicities; deduced P-parity nonconservation upper limit. 234U level deduced uncertainty in p-wave contribution.


1983VE10      Pisma Zh.Eksp.Teor.Fiz. 38, 265 (1983); JETP Lett.(USSR) 38, 315 (1983)

V.A.Vesna, A.I.Egorov, E.A.Kolomensky, V.M.Lobashev, I.S.Okunev, B.G.Peskov, A.N.Pirozhkov, L.M.Smotritsky, E.V.Shulgina, A.F.Kornyushkin, N.A.Titov

Search for P-Odd Asymmetry in the α Emission in the Capture of Polarized Thermal Neutrons by 6Li and 10B Nuclei

NUCLEAR REACTIONS 6Li, 10B(polarized n, α), E=thermal; measured P-odd asymmetry, limits. Gas-filled proportional chamber detectors.


1982VE10      Pisma Zh.Eksp.Teor.Fiz. 35, 351; JETP Lett.(USSR) 35, 433 (1982)

V.A.Vesna, E.A.Kolomensky, V.M.Lobashev, A.N.Pirozhkov, L.M.Smotritsky, N.A.Titov

Observation of Parity Nonconservation in the Total Cross Section and in the Cross Section for the Radiative Capture of Polarized Thermal Neutrons in 79,81Br

NUCLEAR REACTIONS 79,81Br(polarized n, X), (polarized n, γ), E=thermal; measured transmission, σ(capture); deduced parity violating effects. Longitudinal beam polarization.


1982VE14      Izv.Akad.Nauk SSSR, Ser.Fiz. 46, 2116 (1982)

V.A.Vesna, E.A.Kolomensky, V.M.Lobashev, A.N.Pirozhkov, L.M.Smotritsky, N.A.Titov

Observation of Parity Violation Effect in the Total Cross Section and Radiative Capture Cross Sections in the Interaction of Polarized Thermal Neutrons with the Nuclei 117Sn and 139La

NUCLEAR REACTIONS 117Sn, 139La(polarized n, n), (polarized n, γ), E=thermal; measured total σ; deduced parity violation effect.


1982VE15      Pisma Zh.Eksp.Teor.Fiz. 36, 169 (1982); JETP Lett.(USSR) 36, 209 (1982)

V.A.Vesna, E.A.Kolomensky, V.M.Lobashev, V.A.Nazarenko, A.N.Pirozhkov, L.M.Smotritsky, Yu.V.Sobolev, N.A.Titov

Observation of Parity Nonconservation in the Integrated γ Spectrum from (n, γ) Reactions in Cl, Br, Cd, Sn, and La Nuclei

NUCLEAR REACTIONS Cl, Br, La(polarized n, γ), E=thermal; measured capture γ asymmetry; Cl, Br, La, Sn(n, γ), E=thermal; measured γ CP; deduced parity nonconservation effects.


1981KO36      Phys.Lett. 107B, 272 (1981)

E.A.Kolomensky, V.M.Lobashev, A.N.Pirozhkov, L.M.Smotritsky, N.A.Titov, V.A.Vesna

Observation of Parity Violating Effects in the Polarized Thermal Neutron Total and Radiative Capture Cross Sections of 117Sn and 139La

NUCLEAR REACTIONS 117Sn, 139La(polarized n, γ), (polarized n, X), E=thermal; measured σ, transmission, helicity dependent asymmetry; deduced parity violating effects. Longitudinal beam polarization.

doi: 10.1016/0370-2693(81)90828-5
Citations: PlumX Metrics


1981VE01      Nucl.Phys. A352, 181 (1981)

V.A.Vesna, E.A.Kolomensky, V.B.Kopeliovich, V.M.Lobashev, V.A.Nazarenko, A.N.Pirozhkov, E.V.Shulgina

Circular Polarization of Gamma Quanta in the Radiative Capture of Polarized Thermal Neutrons by Protons

NUCLEAR REACTIONS 1H(polarized n, γ), E=thermal; measured CP for γ-rays. 2H deduced triplet admixture in capturing state. Solid parahydrogen target.

doi: 10.1016/0375-9474(81)90375-4
Citations: PlumX Metrics


1981VE08      Pisma Zh.Eksp.Teor.Fiz. 33, 429 (1981); JETP Lett.(USSR) 33, 411 (1981)

V.A.Vesna, A.I.Egorov, E.A.Kolomensky, V.M.Lobashev, A.N.Pirozhkov, L.M.Smotritsky, N.A.Titov

Asymmetry of Charged-Particle Emission in the Capture of Polarized Thermal Neutrons by 3He and 10B Nuclei

NUCLEAR REACTIONS 3He(polarized n, p), 10B(polarized n, α), E=thermal; measured asymmetry; deduced asymmetry coefficient. Adiabatic rf flipper.


1977KO37      Yad.Fiz. 25, 233 (1977); Sov.J.Nucl.Phys. 25, 127 (1977)

E.A.Kolomenskii, V.B.Kopeliovich, V.M.Lobashev, V.A.Nazarenko, A.I.Okorokov, A.N.Pirozhkov, L.M.Smotritskii, G.I.Kharkevich, A.F.Shchebetov

The Role of the Triplet State in Radiative Capture of Thermal Neutrons by Protons

NUCLEAR REACTIONS 1H(polarized n, γ), E=th; measured CP(γ); deduced triplet-state contribution.


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