The Variation of Neutron Dose with Depth in a Tissue-Equivalent Phantom

Smith, J.W.; Boot, S.J.

doi:10.1088/0031-9155/7/1/304

Cited by 24 publications

(3 citation statements)

References 4 publications

(8 reference statements)

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“…energies are available (Smith and Boot 1962, Aceto and Churchill 1963). Smith and Boot (1962) utilized accelerator-produced neutrons at energies of 0.13, 0.5, 1.0, 2.5 and 14.1 MeV and a Po-Be source (,! ?W 4.3 MeV).…”

Section: Radiation Dose and Neutron Flux Density In Human Subjectsmentioning

confidence: 99%

Theoretical considerations in the selection of neutron sources for total-body neutron activation analysis

Cohn

Fairchild

Shukla

1973

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The factors involved in selecting a neutron source for total-body neutron activation (TBXAA) are the nature of the neutron source, the flux density distribution, the type and positioning of the moderator and the acceptable radiation dose to the subject. Consideration of these factors indicates that 4.5 MeV neutrons have an overall advantage of 2 relative to 14 MeV neutrons in TBXAA. Further, multiple ( U , n) sources in broad beam geometry and simultaneous bilateral exposure have an advantage of 3.6 relative to 14 MeV neutrons from a neutron generator. ( E , n) sources also give ease of operation and high reproducibility.

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Section: Radiation Dose and Neutron Flux Density In Human Subjectsmentioning

confidence: 99%

Theoretical considerations in the selection of neutron sources for total-body neutron activation analysis

Cohn

Fairchild

Shukla

1973

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“…An approximation to an infinit'e slab phantom was made in the form described in an earlier paper (Smith and Boot 1962). Five polyt'hene containers of 0.63 cm wall t'hickness formed a composite slab 30 cm thick, 60 cm high and 60 cm long, t'he centre container being a 30 cm cube.…”

Section: Appa4ratusmentioning

confidence: 99%

Sodium Activation by Fast Neutrons in Man Phantoms

Smith¹

1962

Phys. Med. Biol.

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“…The body's chemical composition was lent slab 30 cm thick. Although a number of taken in conformity with reco-endations; (8) authors (2)(3)(4)(5)(6) obtained both theoretical and hydrogen, oxygen, carbon and nitrogen were experimental data on tissue dose of mono-taken into account (Table 1). Eight directions energetic neutrons, Snyder and Neufeld's results, due to their fundamental character, are used as the basis for standardizing permissible neutron fl~ence.…”

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confidence: 95%

Influence of Incidence Angle of Monoenergetic Neutrons on Dose Equivalent Distribution for Recoil Nuclei in Manʼs Phantom

Zolotukhin¹,

Obaturov²,

Prokofieva³

et al. 1971

Health Physics

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At present normalization of neutron human exposure is based on Snyder and Neufeld's calculated results. However the approximations used by them do not sufficiently approximate the real conditions of human exposure. In this paper distribution of the dose equivalent due to recoil nuclei of monoenergetic neutrons of energies from 100 eV to 10 MeV in a tissue equivalent man-size phantom was determined by a Monte Carlo technique. The dose equivalent distributions along the x and y axes for eight directions of the incident neutron beam on the phantom are given. AT PRESENT neutron irradiation hazards for man dose equivalent due to protons and heavy recoil are estimated from calculated results Of SNYDER nuclei, i.e. those components of dose which are and NEUFELD.(~) These authors calculated by determined most laboriously in experiment. A

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The Variation of Neutron Dose with Depth in a Tissue-Equivalent Phantom

Cited by 24 publications

References 4 publications

Theoretical considerations in the selection of neutron sources for total-body neutron activation analysis

Theoretical considerations in the selection of neutron sources for total-body neutron activation analysis

Sodium Activation by Fast Neutrons in Man Phantoms

Influence of Incidence Angle of Monoenergetic Neutrons on Dose Equivalent Distribution for Recoil Nuclei in Manʼs Phantom

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