Determination of radial and axial neutron flux distribution in irradiation channel of NIRR-1 using foil activation technique

2012 ◽  
Vol 50 ◽  
pp. 50-55 ◽  
Author(s):  
Y. Musa ◽  
Y.A. Ahmed ◽  
Y.A. Yamusa ◽  
I.O.B. Ewa
Keyword(s):  
Neutron Flux ◽  
Flux Distribution ◽  
Activation Technique ◽  
Irradiation Channel ◽  
Neutron Flux Distribution ◽  
Foil Activation

Measurement of neutron flux distribution in the irradiation channel in the Ghana Research Reactor-1 using Monte Carlo method

2011 ◽  
Vol 53 (2) ◽  
pp. 189-194 ◽  
Author(s):  
R.G. Abrefah ◽  
S. Anim-Sampong ◽  
B.J.B. Nyarko ◽  
E.H.K. Akaho ◽  
R.B.M. Sogbadji
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Neutron Flux ◽  
Flux Distribution ◽  
Research Reactor ◽  
Irradiation Channel ◽  
Neutron Flux Distribution

Determination of thermal neutron flux distribution at the rotary rack served for elemental concentration analysis using the k0-INAA method

2021 ◽  
Vol 10 (1) ◽  
pp. 11-20
Author(s):  
Tho Nguyen Thi ◽  
Anh Tran Tuan ◽  
Cuong Trinh Van ◽  
Doanh Ho Van ◽  
Duong Tran Quoc ◽  
...  
Keyword(s):  
Neutron Flux ◽  
Thermal Neutron ◽  
Flux Distribution ◽  
Thermal Neutron Flux ◽  
Epithermal Neutron ◽  
Epithermal Neutron Flux ◽  
Irradiation Position ◽  
Neutron Flux Distribution ◽  
Sample Irradiation

The accuracy of elements concentration determination using the k0-standardization method directly depends on irradiation and measurement parameters including Non-1/E epithermal neutron flux distribution shape α (ϕ epi ≈1/E1+α ) , thermal-to-epithermal neutron flux ratio f, efficiency ε, peak area… In the case of the irradiation position at the rotary rack of the Dalat Nuclear Research Reactor (DNRR), the difference of thermal neutron flux between the bottom (3.54x1012 n.cm-2.s-1) and the top (1.93x1012 n.cm-2.s-1) of the 15 cm aluminum container is up to 45%. Therefore, it is necessary to accurately determine above-mentioned parameters in the sample irradiation position. The present paper deals with the determination of the distribution of thermal neutron flux along the sample irradiation container by using 0.1% Au–Al wire activation technique. The thermal neutron flux was then used to calculate the concentration of elements in the Standard Reference Material 2711a and SMELS type III using k0-INAA method at different positions in the container. The obtained results with the neutron flux correction were found to be in good agreement with the certified values. In conclusion, the proposed technique can be applied for activation analyses without sandwiching flux monitors between samples during irradiations.

Determination of fast neutron flux distribution in irradiation sites of the Malaysian Nuclear Agency research reactor

2011 ◽  
Vol 69 (5) ◽  
pp. 762-767 ◽  
Author(s):  
A.R. Yavar ◽  
S.B. Sarmani ◽  
A.K. Wood ◽  
S.M. Fadzil ◽  
M.H. Radir ◽  
...  
Keyword(s):  
Neutron Flux ◽  
Fast Neutron ◽  
Flux Distribution ◽  
Research Reactor ◽  
Fast Neutron Flux ◽  
Neutron Flux Distribution

Determination of critical mass and neutron flux distribution by means of physical models

Atomic Energy ◽  
1960 ◽  
Vol 7 (1) ◽  
pp. 554-558
Author(s):  
V. A. Dmitrievskii ◽  
I. S. Grigorev
Keyword(s):  
Neutron Flux ◽  
Flux Distribution ◽  
Critical Mass ◽  
Physical Models ◽  
Neutron Flux Distribution

The effect of graphite thermal column around the newly designed large irradiation channel of GHARR-1 on neutron flux distribution

2012 ◽  
Vol 42 ◽  
pp. 131-134 ◽  
Author(s):  
M. Asamoah ◽  
O. Gyampo ◽  
B.J.B. Nyarko ◽  
E.H.K. Akaho
Keyword(s):  
Neutron Flux ◽  
Flux Distribution ◽  
Irradiation Channel ◽  
Neutron Flux Distribution ◽  
Thermal Column

Determination of neutron flux distribution in an Am–Be irradiator using the MCNP

2003 ◽  
Vol 59 (4) ◽  
pp. 263-266 ◽  
Author(s):  
K Shtejer-Diaz ◽  
C.B Zamboni ◽  
G.S Zahn ◽  
J.Y Zevallos-Chávez
Keyword(s):  
Neutron Flux ◽  
Flux Distribution ◽  
Neutron Flux Distribution

Rechner-Regelung der Neutronenflußverteilung in einem Leistungsreaktor / Computer control of the neutron flux distribution in a power reactor

1974 ◽  
Vol 22 (12) ◽  
Author(s):  
R. Grumbach
Keyword(s):  
Neutron Flux ◽  
Flux Distribution ◽  
Power Reactor ◽  
Computer Control ◽  
Neutron Flux Distribution

Die Neutronenflußverteilung in einem großen Kernreaktor unterliegt Störeinflüssen, deren Auswirkungen durch Regelung beherrscht werden müssen. Zu diesem Zweck wurde ein mit Hilfe eines Prozeßrechners anwendbares Verfahren entwickelt, das ein Regelungsgesetz aus einem Modell des vorhandenen Prozeßzustands errechnet; um zeitraubende physikalische Rechnungen zu vermeiden, werden die benötigten Modellparameter fortlaufend durch empirische Prozeßerkennung ermittelt. In Experimenten mit einem Leistungsreaktor wurde die Anwendbarkeit des Regelungsverfahrens bewiesen.

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