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Sökning: WFRF:(Ichihara T.) > Teknik > Calculation of the ...

Calculation of the stochastic pulsed Rossi-alpha formula and its experimental verification

Kitamura, Yasunori (författare)
Nagoya University
Taguchi, K. (författare)
Nagoya University
Misawa, T (författare)
Kyoto University
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Pazsit, Imre, 1948 (författare)
Chalmers tekniska högskola,Chalmers University of Technology
Yamamoto, Akio (författare)
Nagoya University
Yamane, Yoshihiro (författare)
Nagoya University
Ichihara, C. (författare)
Kyoto University
Nakamura, H. (författare)
Kyoto University
Oigawa, H. (författare)
Japan Atomic Energy Agency
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 (creator_code:org_t)
Elsevier BV, 2006
2006
Engelska.
Ingår i: Progress in Nuclear Energy. - : Elsevier BV. - 0149-1970. ; 48:1, s. 37-50
Relaterad länk:
http://dx.doi.org/10...
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https://research.cha...
https://doi.org/10.1...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • The Rossi-alpha formula for subcritical systems driven by a pulsed neutron source was derived with a solution technique that can effectively take different shape functions of the pulsed neutron source into account. The result of derivation showed that the present formula consists of the correlated and uncorrelated terms and an oscillating term whose period was identical to that of the pulsed neutron source.To investigate the validity of the pulsed Rossi-alpha formula and its applicability for the evaluation of the prompt neutron decay constant alpha from measurements, an experiment was performed at the Kyoto University Critical Assembly with a pulsed D-T neutron source. Although it seemed that fitting the present formula to the experimental curves was not practical because of an infinite-series expansion structure of the oscillating term, it was possible to extract only the correlated term, that explicitly includes the alpha value, by a simple data handling procedure. It was found that the measured alpha values agreed with those obtained by the pulsed neutron source method very well. This finding means that the pulsed Rossi-alpha method will be an attractive candidate for the monitoring method of the subcritical reactivity of future accelerator driven systems.

Ämnesord

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)
TEKNIK OCH TEKNOLOGIER  -- Annan teknik -- Övrig annan teknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
NATURVETENSKAP  -- Fysik -- Annan fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Other Physics Topics (hsv//eng)

Nyckelord

Rossi-alpha
Reactivity measurement
ADS

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