Skip to main content
Log in

Investigations on the moderating parameters of “dowtherm a” at different temperatures

Исследования замедляющих свойств органического вещества дифиля при разных температурах

  • Published:
Acta Physica Academiae Scientiarum Hungaricae

Abstract

Moderating parameters of a medium consisting of 26,81% diphenyl and 73,19% diphenyl oxide have been tested at different temperatures. The temperature dependence of the diffusion length has been found to obey the empirical relationL D=4,002 exp (0,0014T). The slowing down length has been found to beL S=11,24±0,06 cm at 36° C. At higher temperatures the slowing-down length increased considerably, so that the testing tank could not be considered any longer as being of infinite size and therefore only the temperature dependence of the most probable slowing-down length for this tank of finite dimensions could be specifically given.

Резюме

Параметры замедления нейтровов в органическом веществе дифиля (состав: 26,81% дифенил и 73,19% окись дифениля) были определены при разных температурах. Для температурной зависимости диффузионной длины было найдено следующее эмпирическое соотношениеL D(T)=4,002[1+1,4 10−3 T+0,98 10−6 T 2].

Для длины замедления при температуре 36°C найдено значениеL S=11,24±0,96 cm для нейтронов Ро-Ве источника.

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.

Similar content being viewed by others

References

  1. A. Polak, Atomkernenergie,2, 390, 1957.

    Google Scholar 

  2. G. A. Freund, Nucleonics,14, 62, 1956.E. L. Colichman andR. F. Fisch, Nucleonics,15, 72, 1957.

    Google Scholar 

  3. T. E. Blackman, J. R. A. Lakey, andG. Preston, The Measurement of the Moderating Properties of Dowthern A, A. E. R. E. R/R 2345, 1957.

  4. С. З. Козан иА. В. Чечемкун, Высокотемпературные теплоносители и их применение в промышленности, Москва—Ленинград (1951).

  5. L. W. Fromm andK. Anderson, Nucl. Sci. and Eng.,2, 160, 1957.

    Google Scholar 

  6. A. Ádám, andG. Kosály, KFKI Reports,6, No. 1, 1958.

  7. C. D. Petrie, M. L. Storm, andP. F. Zweifel, Nucl. Sci. and Eng.,2, 728, 1957.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Pál, L., Bata, L. & Kiss, I. Investigations on the moderating parameters of “dowtherm a” at different temperatures. Acta Physica 10, 173–184 (1959). https://doi.org/10.1007/BF03156666

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03156666

Keywords

Navigation