25 Result(s)

Article

The dose kernels of pencil and differential pencil photon beams with the spectrum of treatment machines with a ⁶⁰Co source in water and their analytical approximation

This article presents the results of calculations by the Monte-Carlo method in the EGSnrc toolkit of the spatial distributions of absorbed energy or dose kernels in water for a pencil beam or differential penc...

V. A. Klimanov, A. N. Moiseev, M. A. Kolyvanova… in Moscow University Physics Bulletin (2016)

Article

Monitoring of ²³⁵U content of fuel assemblies for nuclear reactors based on neutron and γ-ray scintillation detector systems

A model of the setup for determining the ²³⁵U content of a fuel assembly for WWER-440 reactors is described. The setup operates based on the digital technology for discriminating neutron and photon scintillation ...

V. L. Romodanov, A. G. Belevitin… in Instruments and Experimental Techniques (2016)

Article

Digital Technology in Nondestructive Monitoring of Nuclear Materials

The use of scintillation detectors in combination with digital technology for obtaining separate responses of neutrons and photons in the field of mixed radioactive radiation is examined. An experimental arran...

V. L. Romodanov, A. G. Belevitin in Atomic Energy (2015)

Article

Monitoring Fissile and Matrix Materials in Closed Containers by Means of Pulsed Neutron Sources

Computational and experimental studies of the possibility of determining the fissile and matrix materials by means of differential neutron attenuation are presented. The time response of ²³⁵U fission under the ac...

V. F. Batyaev, O. V. Bochkarev, S. V. Sklyarov, V. L. Romodanov… in Atomic Energy (2013)

Article

A method for nondestructive assay of nuclear materials in facilities with a pulse neutron generator and a digital technology for discrimination between neutrons and photons

A method for determining the ²³⁵U concentration in fuel assemblies of a high-power channel-type PBMK reactor is described. The measure of ²³⁵U content of an analyzed sample is the number of neutrons from thermal-...

V. L. Romodanov, A. G. Belevitin… in Instruments and Experimental Techniques (2013)

Article

Particle coincidence counter based on digital technology for nondestructive monitoring of nuclear materials

A setup for counting particle coincidences that can be used to monitor the amount of fissile material without opening its storage container is described. The results of modeling the measurements are presented....

V. L. Romodanov, A. G. Belevitin, V. V. Afanasiev, A. B. Tikhoivanov… in Atomic Energy (2013)

Article

Sensitivity of nonstationary neutron spectra in lead to nuclear data variations

The computed variations of the parameters of nonstationary neutron spectra in lead moderator due to the use of different libraries of the constants characterizing the sensitivity of these parameters to nuclear...

V. L. Romodanov *, V. K. Sakharov, D. N. Chernikova in Atomic Energy (2012)

Article

Properties of radiation from portable pulsed neutron generators

The results of computational studies of the effect of the building materials used in ING-031, -06 pulsed neutron generators, produced by the Dukhov All-Russia Research Institute of Automatics, on the propertie...

V. L. Romodanov, V. K. Sakharov, D. N. Chernikova, V. I. Ryzhkov… in Atomic Energy (2011)

Article

A method for decreasing the loading on scintillation channels in facilities with pulsed neutron sources

A method is proposed for decreasing the loading on scintillation channels in nuclear material detection and monitoring facilities comprising pulsed neutron sources, neutron moderators, and scintillators with a...

V. L. Romodanov, V. K. Sakharov… in Instruments and Experimental Techniques (2010)

Article

Finding the parameter of digital discrimination between scintillation responses to neutrons and photons in radioactive and fissile material detection systems

Use of a digital technique for discriminating between neutron and photon responses of high-efficiency scintillation detectors in fissile material detection systems is proposed. Software-controlled processing o...

V. L. Romodanov, A. G. Belevitin… in Instruments and Experimental Techniques (2009)

Article

Computational-experimental studies of a facility for detecting fissile materials in airports

An approach to develo** a facility for detecting and nondestructive monitoring of fissile materials is examined. The approach is based on the use of a pulsed neutron source and different moderators in which ...

V. L. Romodanov, V. K. Sakharov, A. G. Belevitin, V. V. Afanas’ev… in Atomic Energy (2008)

Article

Fissile materials detection in systems with pulsed neutron sources

Different approaches to detecting fissile materials which are being transported illegally across state borders or removed illegally from enterprises of the nuclear industry are examined. The content of fissile...

V. L. Romodanov, V. V. Afanas’ev, A. G. Belevitin, V. K. Sakharov… in Atomic Energy (2006)

Article

Improved method for measuring the γ-ray absorbed dose rate in models of iron shielding of a thermonuclear reactor

An improved method of measuring the absorbed γ-ray dose rate usingCaSO ₄ andSrSO ₄ type thermoluminescent det...

M. I. Andreev, V. V. Afanas’ev, A. G. Belevitin, V. L. Romodanov in Atomic Energy (1999)

Article

Benchmark experiment on the passage of 14-MeV neutrons in models of an iron and iron-water shielding with slits

The experimental investigations and calculations of slit configurations in iron and iron—water shielding enable the following conclusions to be drawn.

...

M. I. Andreev, V. V. Afanas'ev, A. G. Belevitin, V. L. Romodanov… in Atomic Energy (1998)

Article

Benchmark experiment on a model of the blanket of a fusion reactor with uranium neutron breeder

V. V. Afanas'ev, A. G. Belevitin, Yu. M. Verzilov, V. L. Romodanov… in Soviet Atomic Energy (1991)

Article

Radiometric method of determining tritium activity in experiments

Yu. M. Verzilov, A. E. Kachanovskii, V. L. Romodanov in Soviet Atomic Energy (1991)

Article

Simulating tritium production in lithium-bearing media in fusion reactor blankets

V. V. Afanas'ev, A. G. Belevitin, Yu. M. Verzilov, V. L. Romodanov in Soviet Atomic Energy (1991)

Article

Nondestructive testing of VVÉR-440 fuel rod clusters with the aid of a pulsed neutron source

V. G. Nikolaev, V. L. Romodanov in Soviet Atomic Energy (1991)

Article

Rapid measurement of the⁷Li(n, n′α)³H reaction rate in the model of a hybrid blanket for a thermonuclear reactor

V. V. Afanas'ev, A. G. Belevitin, Yu. M. Berzilov, M. A. Ziganov… in Soviet Atomic Energy (1988)

Article

Nondestructive method for the control of nonirradiated nuclear reactor fuel using a pulsed neutron source

S. B. Shikhov, V. L. Romodanov, V. G. Nikolaev, V. A. Luppov… in Soviet Atomic Energy (1980)