Measurement of talc in flour by the 14 MeV neutron activation analysis method

Xu, Xiangyan; Lu, Jingbin; Yi, Chul-Young; Tang, Wanyue; Sun, Yan; Zhao, Leyi; Liu, Jiaxi; Li, Chengqian; Li, Xiaohua; Zheng, Renzhou; Wang, Yu

doi:10.1016/j.nimb.2020.01.001

Cited by 7 publications

(1 citation statement)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The distribution of 24 Na in the human body can be calculated according to the radiative capture cross-section of 23 Na(n,γ) 24 Na. The 24 Na atoms produced in human organs by the activation reaction can be calculated according to the following formula [16]:…”

Section: Methodsmentioning

confidence: 99%

An optimized method for neutron dose evaluation based on ²⁴Na activity distribution in the human body

Xu¹,

Zhang²,

Ning³

et al. 2023

J. Radiol. Prot.

Self Cite

View full text Add to dashboard Cite

The neutron dose resulting from external irradiation can be evaluated by measuring the counts of characteristic γ rays produced by 24Na in the human body. The detecting geometry with the highest detection efficiency for measuring the whole body 24Na activity has not been studied. In this work, the MCNP code is used to calculate the spatial distribution of 24Na in the human body irradiated by neutrons with different energies in different irradiation geometries. The fluence distribution of 24Na characteristic γ rays at the body surface is calculated. The counts of 24Na characteristic γ rays induced by monochromatic neutrons irradiation are simulated to fit the scenarios of neutron irradiation by a continuous energy spectrum neutrons. When the spontaneous neutrons from 252Cf with 1 Gy dose irradiate the human body, (3.63 - 4.35) × 1010 24Na atoms are produced. The lower detection limit for the neutron absorbed dose is reduced from ~100 mGy to less than 1 mGy when the radiation detector is placed over the back of the human body close to the liver. The relative error between the measured counts of 24Na characteristic γ rays caused by 252Cf neutrons irradiation and the counts fitted by monochromatic neutron irradiation data is less than 5.7%. The neutron dose received from a continuous energy spectrum neutron can be acquired quickly and accurately by weighted summing the data for monochromatic neutron irradiations calculated in this paper, which is more convenient and practical than the previous method.

show abstract

Section: Methodsmentioning

confidence: 99%

An optimized method for neutron dose evaluation based on ²⁴Na activity distribution in the human body

Xu¹,

Zhang²,

Ning³

et al. 2023

J. Radiol. Prot.

Self Cite

View full text Add to dashboard Cite

show abstract

Measurement of talc in flour by the prompt-gamma ray neutron activation analysis method

et al. 2021

Applied Radiation and Isotopes

View full text Add to dashboard Cite

Study on the 24Na specific activity induced by external neutron irradiation based on ICRP 110 computational phantoms

Zhang

Ning

et al. 2023

Applied Radiation and Isotopes

View full text Add to dashboard Cite

Measurement of talc in flour by the 14 MeV neutron activation analysis method

Cited by 7 publications

References 24 publications

An optimized method for neutron dose evaluation based on ²⁴Na activity distribution in the human body

An optimized method for neutron dose evaluation based on ²⁴Na activity distribution in the human body

Measurement of talc in flour by the prompt-gamma ray neutron activation analysis method

Study on the 24Na specific activity induced by external neutron irradiation based on ICRP 110 computational phantoms

Contact Info

Product

Resources

About

Measurement of talc in flour by the 14 MeV neutron activation analysis method

Cited by 7 publications

References 24 publications

An optimized method for neutron dose evaluation based on 24Na activity distribution in the human body

An optimized method for neutron dose evaluation based on 24Na activity distribution in the human body

Measurement of talc in flour by the prompt-gamma ray neutron activation analysis method

Study on the 24Na specific activity induced by external neutron irradiation based on ICRP 110 computational phantoms

Contact Info

Product

Resources

About

An optimized method for neutron dose evaluation based on ²⁴Na activity distribution in the human body

An optimized method for neutron dose evaluation based on ²⁴Na activity distribution in the human body