Application of the Pulsed-Neutron Method for Measuring the Reactivity of the Fissile Systems with Reflector

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Application of the Pulsed-Neutron Method for Measuring the Reactivity of the Fissile Systems with Reflector. / Voinov, M. A.; Voronin, V. V.; Kulik, V. V.; Golubeva, O. A.

In: Physics of Atomic Nuclei, Vol. 82, No. 8, 01.12.2019, p. 1088-1094.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{c7e9520e4d1d4dc49697d48b26f70551,

title = "Application of the Pulsed-Neutron Method for Measuring the Reactivity of the Fissile Systems with Reflector",

abstract = "The experiments on recording the radiation decay signal of the GIR2 reactor core in the range from 0 to 40 µs when exposed to an external intense neutron pulse with a duration of ∼1 µs are performed. The reactivity interval from subcritical (−7.5 β) to critical (+0.28 β) states of the reactor is studied. It is found that the signal of the detector with a plastic scintillator depends on the reactivity and is proportional to the change in the density of thermalized neutrons in the reactor converter. The results show that the reactivity of the GIR2 reactor can be determined on the basis of measurement of the signal decay of a scintillation detector and the well-known expression α∞=βΛ(ρ−1) to calculate the reactivity values only for states with a reactivity greater than ∼−3 β.",

keywords = "fissile systems with reflector, reactivity, scintillation detector",

author = "Voinov, {M. A.} and Voronin, {V. V.} and Kulik, {V. V.} and Golubeva, {O. A.}",

note = "Publisher Copyright: {\textcopyright} 2019, Pleiades Publishing, Ltd.",

year = "2019",

month = dec,

day = "1",

doi = "10.1134/S1063778819080155",

language = "English",

volume = "82",

pages = "1088--1094",

journal = "Physics of Atomic Nuclei",

issn = "1063-7788",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "8",

}

RIS

TY - JOUR

T1 - Application of the Pulsed-Neutron Method for Measuring the Reactivity of the Fissile Systems with Reflector

AU - Voinov, M. A.

AU - Voronin, V. V.

AU - Kulik, V. V.

AU - Golubeva, O. A.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - The experiments on recording the radiation decay signal of the GIR2 reactor core in the range from 0 to 40 µs when exposed to an external intense neutron pulse with a duration of ∼1 µs are performed. The reactivity interval from subcritical (−7.5 β) to critical (+0.28 β) states of the reactor is studied. It is found that the signal of the detector with a plastic scintillator depends on the reactivity and is proportional to the change in the density of thermalized neutrons in the reactor converter. The results show that the reactivity of the GIR2 reactor can be determined on the basis of measurement of the signal decay of a scintillation detector and the well-known expression α∞=βΛ(ρ−1) to calculate the reactivity values only for states with a reactivity greater than ∼−3 β.

AB - The experiments on recording the radiation decay signal of the GIR2 reactor core in the range from 0 to 40 µs when exposed to an external intense neutron pulse with a duration of ∼1 µs are performed. The reactivity interval from subcritical (−7.5 β) to critical (+0.28 β) states of the reactor is studied. It is found that the signal of the detector with a plastic scintillator depends on the reactivity and is proportional to the change in the density of thermalized neutrons in the reactor converter. The results show that the reactivity of the GIR2 reactor can be determined on the basis of measurement of the signal decay of a scintillation detector and the well-known expression α∞=βΛ(ρ−1) to calculate the reactivity values only for states with a reactivity greater than ∼−3 β.

KW - fissile systems with reflector

KW - reactivity

KW - scintillation detector

UR - http://www.scopus.com/inward/record.url?scp=85084144422&partnerID=8YFLogxK

U2 - 10.1134/S1063778819080155

DO - 10.1134/S1063778819080155

M3 - Article

AN - SCOPUS:85084144422

VL - 82

SP - 1088

EP - 1094

JO - Physics of Atomic Nuclei

JF - Physics of Atomic Nuclei

SN - 1063-7788

IS - 8

ER -

ID: 98728716