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NSR database version of May 1, 2024.

Search: Author = V.E.Varlamov

Found 9 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

2014SE09      Phys.Rev. C 89, 044002 (2014)

A.P.Serebrov, P.Geltenbort, O.M.Zherebtsov, S.V.Sbitnev, V.E.Varlamov, A.V.Vassiljev, M.S.Lasakov, I.A.Krasnoschekova, S.N.Ivanov, D.Pushin

Experimental search for long-range forces in neutron scattering via a gravitational spectrometer

NUCLEAR REACTIONS He(n, n), E=ultracold; measured storage time of neutrons in the UCN trap, transfer of recoil energy using the gravitational spectrometer at ILL-Grenoble reactor facility; deduced scattering σ, constraints on the strength of the long-range "fifth" force. Comparison with neutron interferometer technique and transmission method.

doi: 10.1103/PhysRevC.89.044002
Citations: PlumX Metrics

2013SE13      JETP Lett. 97, 670 (2013)

A.P.Serebrov, P.Geltenbort, O.M.Zherebtsov, S.V.Sbitnev, V.E.Varlamov, A.V.Vassiljev, M.S.Lasakov, I.A.Krasnoschekova, S.N.Ivanov

Measurement of the total cross sections of ultracold neutrons with noble gases and search for long-range forces

NUCLEAR REACTIONS He, Ne, Ar, Kr, Xe(n, X), E<0.0000003 eV; measured reaction products; deduced σ, neutron decay probability parameters. Comparison with theoretical calculations.

doi: 10.1134/S0021364013120114
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23198.

2011SE10      Phys.Rev. C 84, 044001 (2011)

A.P.Serebrov, O.M.Zherebtsov, S.V.Sbitnev, V.E.Varlamov, A.V.Vassiljev, M.S.Lasakov

Search for long-range force between a neutron and an atom with a trap of ultracold neutrons

NUCLEAR REACTIONS He, Ne, Ar, Kr(n, X), E=ultracold; analyzed total interaction σ of neutrons with free atoms to search for long-range forces between neutrons and atoms.

doi: 10.1103/PhysRevC.84.044001
Citations: PlumX Metrics

2008SE08      Phys.Rev. C 78, 035505 (2008)

A.P.Serebrov, V.E.Varlamov, A.G.Kharitonov, A.K.Fomin, Yu.N.Pokotilovski, P.Geltenbort, I.A.Krasnoschekova, M.S.Lasakov, R.R.Taldaev, A.V.Vassiljev, O.M.Zherebtsov

Neutron lifetime measurements using gravitationally trapped ultracold neutrons

RADIOACTIVITY 1n(β-); measured half-life using gravitationally trapped ultracold neutrons.

doi: 10.1103/PhysRevC.78.035505
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Data from this article have been entered in the XUNDL database. For more information, click here.

1995SE19      Pisma Zh.Eksp.Teor.Fiz. 62, 764 (1995); JETP Lett. 62, 785 (1995)

A.P.Serebrov, V.A.Mityukhlyaev, A.A.Zakharov, A.G.Kharitonov, V.V.Nesvizhevsky, M.S.Lasakov, R.R.Taldaev, A.V.Aldushchenkov, V.E.Varlamov, A.V.Vasilev, G.Greene, T.Bowles

Experimental Study of a Solid-Deuterium Source of Ultracold Neutrons

1990AL38      Pisma Zh.Eksp.Teor.Fiz. 52, 984 (1990); JETP Lett.(USSR) 52, 373 (1990)

V.P.Alfimenkov, V.E.Varlamov, A.V.Vasilev, V.P.Gudkov, V.I.Lushchikov, V.V.Nesvizhevsky, A.P.Serebrov, A.V.Strelkov, S.O.Sumbaev, R.R.Taldaev, A.G.Kharitonov, V.N.Shvetsov

Measurement of Neutron Lifetime with a Gravitational Trap for Ultracold Neutrons

RADIOACTIVITY 1n; measured T1/2; deduced axial, vector weak interaction constants ratio. Ultracold neutrons, gravitational trap.

1989KH07      Nucl.Instrum.Methods Phys.Res. A284, 98 (1989)

A.G.Kharitonov, V.V.Nesvizhevsky, A.P.Serebrov, R.R.Taldaev, V.E.Varlamov, A.V.Vasilyev, V.P.Alfimenkov, V.I.Lushchikov, V.N.Shvetsov, A.V.Strelkov

Preliminary Results of Neutron Lifetime Measurements with Gravitational UCN Trap

RADIOACTIVITY 1n(β-); measured T1/2. Preliminary results, UCN gravitational trap.

doi: 10.1016/0168-9002(89)90257-X
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