Skip to main content
Log in

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

  • Published:
Physics of Atomic Nuclei Aims and scope Submit manuscript

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 \({\alpha _\infty } = {\beta \over \Lambda }(\rho - 1)\) to calculate the reactivity values only for states with a reactivity greater than ∼−3 β.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. G. R. Keepin, Physics of Nuclear Kinetics (Addison-Wesley, Reading, MA, 1965).

    Google Scholar 

  2. K. H. Beckurts and K. Wirtz, Neutron Physics (Springer, New York 1964).

    Book  Google Scholar 

  3. M. A. Voinov and S. A. Barinov, Vopr. At. Nauki Tekh., Ser.: Fiz. Yad. Reakt., Nos. 1–2, 168 (2002).

  4. P. F. Cherednik, Vopr. At. Nauki Tekh., Ser.: Impul’s. Reakt. Prost. Krit. Sborki, No. 1 (7), 43 (1981).

  5. V. F. Kolesov, Aperiodic Pulsed Reactors (RFYaTs-VNIIEF, Sarov 1999) [in Russian].

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to M. A. Voinov.

Ethics declarations

The authors declare that they have no conflict of interest.

Additional information

Russian Text © The Author(s), 2018, published in Voprosy Atomnoi Nauki i Tekhniki. Seriya: Fizika Yadernykh Reaktorov, 2018, No. 4, pp. 69–77.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Voinov, M.A., Voronin, V.V., Kulik, V.V. et al. Application of the Pulsed-Neutron Method for Measuring the Reactivity of the Fissile Systems with Reflector. Phys. Atom. Nuclei 82, 1088–1094 (2019). https://doi.org/10.1134/S1063778819080155

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S1063778819080155

Keywords

Navigation