Method of Measuring Relative Neutron Capture Rate of238U by Foil Activation

The thermal column at the TRIGA PUSPATI (RTP) research reactor can produce thermal neutron. However, the optimization on the thermal neutron flux produced should be performed to gain a sufficient thermal neutron for boron neutron capture therapy purpose. Thus, the objective of this review is to optimize the thermal neutron flux by designing the collimator with different materials at the thermal column. In order to fulfil the requirement, set by the IAEA standard, the study of Boron Neutron Capture Therapy (BNCT) around the world was being reviewed to study the suitable measurement, material, design, and modification for BNCT at the thermal column of TRIGA MARK-II, Malaysia. Initially, the BNCT mechanisms and history was review. Then, this paper review on the design and modifications for BNCT purpose around the world. Based on this review, suitable material and design can be used for the BNCT in Malaysia. Moreover, this paper also reviews the current status of BNCT at the RTP with the measurement of the thermal neutron flux was conducted along the thermal column at 250 kW. The thermal column of RTP was divided into 3 phases (Phase 1, Phase 2 and Phase 3) so that an accurate measurement can be obtained by using gold foil activation method. This value was used as a benchmark for the neutron flux produced from the thermal column. The reviewed demonstrated that the final thermal neutron flux produced was significantly for BNCT purpose.

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The Astrophysical Journal ◽

10.1086/308175 ◽

2000 ◽

Vol 528 (1) ◽

pp. 573-581 ◽

Cited By ~ 23

Author(s):

R. Reifarth ◽

K. Schwarz ◽

F. Kappeler

Keyword(s):

Neutron Capture ◽

Capture Rate

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Präzise Messung der γ-Absolutintensität niederenergetischer Übergänge bei (n, γ)-Reaktionen und beim radioaktiven Zerfall mit einem Kristallspektrometer

Zeitschrift für Naturforschung A ◽

10.1515/zna-1966-0902 ◽

1966 ◽

Vol 21 (9) ◽

pp. 1328-1343 ◽

Cited By ~ 2

Author(s):

Horst A. Neumann

Keyword(s):

Neutron Capture ◽

Indirect Method ◽

Research Reactor ◽

Direct Method ◽

Capture Rate ◽

Radioactive Decay ◽

Low Energy ◽

Crystal Spectrometer ◽

Γ Rays

A direct and an indirect method for accurate measurement of absolute intensities of low-energy γ-rays from neutron capture and radioactive decay by means of a crystal spectrometer is described. The 478-keV peak of Li7 (target B10) is used in the direct method while the 412-keV peak of Hg198 (target Au) is used in the indirect method. In addition the intensity calibration of the crystal spectrometer used in FRM (Munich Research Reactor), determination of the neutron capture rate and corrections for γ and neutron self-absorption are discussed in some detail. Absolute γ-intensities per neutron capture or decay respectively were determined for a number of strong low energy γ transitions in Rh104, Cd114, Sm150, Sm153, Eu152, Eu153, Eu154, Gd156, Gd158, Dy162, Dy163, Dy164, Dy165, Ho165, Ho166 and Er166. An accuracy of 2% was obtained in the most favorable cases.

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