Measurement of the Dose in Small Tissue Volumes Surrounding "Point" Sources of Radioisotopes

Failla, Patricia; Failla, G.

doi:10.2307/3570873

Cited by 14 publications

(2 citation statements)

References 3 publications

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“…Distributions have been measured in air (Sommermeyer andWaechter 1953, 1956;Sommermeyer 1954;Clark et al 1955;Failla and Failla 1960;Cross 1967b), ethane, argon, and foamed polystyrene (Cross 1967b), in "point" geometry and in polystyrene (Loevinger 1954(Loevinger , 1956, in Table 2. Dose rates for beta emitters in an infinite water medium.…”

Section: Comparison With Experimental Results and With Other Calculatmentioning

confidence: 99%

Estimates of Absorption of Radiofrequency Radiation by the Embryo and Fetus During Pregnancy

No²,

Py³

1992

Health Physics

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The ACCEPT Monte Carlo code has been used to calculate radial dose distributions around isotropic point sources of monoenergetic electrons between 0.01 and 10 MeV in an infinite water medium. The results were averaged over beta spectra to derive distributions for 147 beta emitters of which 32 are presented. More extensive tables of distributions will be presented in a report. Distributions for monoenergetic electrons agree with recent ETRAN-code calculations of Berger and Seltzer within 2%, except at very short distances where there are differences up to several percent. Results calculated by the EGS4 code differ by up to a few percent. Distributions for beta emitters are in excellent agreement with both experimental results and ETRAN and EGS4 calculations, except at very short distances.

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Section: Comparison With Experimental Results and With Other Calculatmentioning

confidence: 99%

Estimates of Absorption of Radiofrequency Radiation by the Embryo and Fetus During Pregnancy

No²,

Py³

1992

Health Physics

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“…The latter occurs only in the few cases where the primary track is nearly parallel to the surface of the cavity. All indirect events can therefore be disregarded and the number of events is equal to the number of primary particles entering U, if one neglects those events 4 where the primary charged particles originate inside U. The event frequency $>* is therefore proportional to the total primary track length, t p .…”

Section: Delta-ray Effectmentioning

confidence: 99%

Event Simultaneity in Cavities: Theory of the Distortions of Energy Deposition in Proportional Counters

Kellerer¹

1971

Radiation Research

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KELLERER, ALBRECHT ]\I. Event Simultaneity in Cavities. Theory of the Distortions of Energy Deposition in Proportional Counters.Radial. Res. 43, 216-233 (1971).The so-called wall effects are distortions of the statistics of energy deposition which occur in proportional counters even if the counting gas and the counter walls have the same atomic composition. The distortions are due to the density difference between walls and counting gas. The3 r consist in the simultaneity of particle passages which in the case of uniform density would occur separatel.y. For heavy particles the delta-ray effect is dominant, but the V-effect can be significant at very high energies of the primary particles. In the case of x-rays, 7-rays, and fast electrons the distortions are due to the reentry, or backscattering, effect. Numerical estimates for the extent of the different processes and the corresponding change of mean event size and of event frequency are given.

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Dosimetry

Marinelli¹

1971

Handbuch Der Medizinischen Radiologie / Encyclopedia of Medical Radiology

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Measurement of the Dose in Small Tissue Volumes Surrounding "Point" Sources of Radioisotopes

Cited by 14 publications

References 3 publications

Estimates of Absorption of Radiofrequency Radiation by the Embryo and Fetus During Pregnancy

Estimates of Absorption of Radiofrequency Radiation by the Embryo and Fetus During Pregnancy

Event Simultaneity in Cavities: Theory of the Distortions of Energy Deposition in Proportional Counters

Dosimetry

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