Determination of the hydrogen content of oil samples from Nigeria using an Am–Be neutron source

Jonah, S.A.; Zakari, I.I.; Elegba, S.B.

doi:10.1016/s0969-8043(98)00105-5

Cited by 9 publications

(2 citation statements)

References 4 publications

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“…Fast neutrons are slowed down mostly by collision with hydrogen atoms of material inside the vessel [4] [5]. Parts of thermal neutron are bounced back towards the source [6] [7]. By placing a thermal detector next to the source, these backscatter neutrons can be measured.…”

Section: Theoretical Considerationmentioning

confidence: 99%

“…By placing a thermal detector next to the source, these backscatter neutrons can be measured. The number of backscatter neutrons is directly proportional to the concentration of the hydrogen atoms in front of the neutron detector [4][5][6][7][8][9]. As the source and detector move down the side of the vessel, interfaces can be detected provided they are involved a change in hydrogen atom concentration.…”

Section: Theoretical Considerationmentioning

confidence: 99%

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Slow neutron mapping technique for level interface measurement

Zain¹,

Ithnin²,

Razali³

et al. 2017

AIP Conference Proceedings

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Abstract. Modern industrial plant operations often require accurate level measurement of process liquids in production and storage vessels. A variety of advanced level indicators are commercially available to meet the demand, but these may not suit specific need of situations. The neutron backscatter technique is exceptionally useful for occasional and routine determination, particularly in situations such as pressure vessel with wall thickness up to 10 cm, toxic and corrosive chemical in sealed containers, liquid petroleum gas storage vessels. In level measurement, high energy neutrons from 241 Am-Be radioactive source are beamed onto a vessel. Fast neutrons are slowed down mostly by collision with hydrogen atoms of material inside the vessel. Parts of thermal neutron are bounced back towards the source. By placing a thermal detector next to the source, these backscatter neutrons can be measured. The number of backscattered neutrons is directly proportional to the concentration of the hydrogen atoms in front of the neutron detector. As the source and detector moved by the matrix around the side of the vessel, interfaces can be determined as long as it involves a change in hydrogen atom concentration. This paper presents the slow neutron mapping technique to indicate level interface of a test vessel.

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Section: Theoretical Considerationmentioning

confidence: 99%