Fluence-to-Dose Coefficient Angular Dependence Factors for Rod and Pillar Phantoms Irradiated by Broad Beams of Beta Particles

Faw, R.E.; Swinth, K.L.

doi:10.1093/oxfordjournals.rpd.a032354

Cited by 3 publications

(4 citation statements)

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“…Calculated angular dependence factors for a rod phantom at 0.07 mm depth: comparison of data from this work and Faw and Swinth [20]. The uncertainty bars are not shown as the symbols are much larger than the corresponding statistical standard uncertainties: less than 1 % for this work and 1 % for Faw and Swinth who did not state a non-statistic contribution to the uncertainty.…”

Section: Verification Of the Simulationsmentioning

confidence: 77%

“…Consequently, some electrons can penetrate more directly through the phantom to -10 -2015 JINST 10 P03014 the reference depth (here 0.07 mm). Thus, it is expected that the values of R(0.07; α) rod from this work are larger than the data from Faw and Swinth [20], as in this work the full angular distribution is available as the full geometry including the air (and the beam flattening filter) was simulated. This effect is the stronger the smaller the electron mean energy is (as low energy electrons undergo more scattering events than electrons with higher energies), i.e.…”

Section: Comparison With Literature Datamentioning

confidence: 89%

“…For some radiation fields of the BSS 2 angular dependence factors for the rod phantom, R(0.07; α) rod , were published by Faw and Swinth [19,20]. Among others, values were calculated for the realistic spectral distributions of the radiation fields of 147 Pm, 85 Kr, and 90 Sr/ 90 Y sources.…”

Section: Comparison With Literature Datamentioning

confidence: 99%

“…As in this work, the full geometry was simulated, i.e. a much more realistic scenario compared to the simulation of Faw and Swinth [20], and as the results of this work are confirmed by measurements (only small deviations are present between the results of this work and the measurements), see section 2.2, the results of this work are considered to be more reliable than the data of Faw and Swinth [20]. Finally, it shall be noted that Faw and Swinth did not provide any information on the non-statistical contribution to the uncertainty, e.g.…”

Section: Comparison With Literature Datamentioning

confidence: 99%

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Correction factors for the ISO rod phantom, a cylinder phantom, and the ICRU sphere for reference beta radiation fields of the BSS 2

Behrens

2015

J. Inst.

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The International Organization for Standardization (ISO) requires in its standard ISO 6980 that beta reference radiation fields for radiation protection be calibrated in terms of absorbed dose to tissue at a depth of 0.07 mm in a slab phantom (30 cm x 30 cm x 15 cm). However, many beta dosemeters are ring dosemeters and are, therefore, irradiated on a rod phantom (1.9 cm in diameter and 30 cm long), or they are eye dosemeters possibly irradiated on a cylinder phantom (20 cm in diameter and 20 cm high), or area dosemeters irradiated free in air with the conventional quantity value (true value) being defined in a sphere (30 cm in diameter, made of ICRU tissue (International Commission on Radiation Units and Measurements)). Therefore, the correction factors for the conventional quantity value in the rod, the cylinder, and the sphere instead of the slab (all made of ICRU tissue) were calculated for the radiation fields of 147 Pm, 85 Kr, 90 Sr/ 90 Y, and, 106 Ru/ 106 Rh sources of the beta secondary standard BSS 2 developed at PTB. All correction factors were calculated for 0˚up to 75˚(in steps of 15˚) radiation incidence. The results are ready for implementation in ISO 6980-3 and have recently been (partly) implemented in the software of the BSS 2.

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Section: Verification Of the Simulationsmentioning

confidence: 77%

Section: Comparison With Literature Datamentioning

confidence: 89%

Section: Comparison With Literature Datamentioning

confidence: 99%

Section: Comparison With Literature Datamentioning

confidence: 99%

See 2 more Smart Citations

Correction factors for the ISO rod phantom, a cylinder phantom, and the ICRU sphere for reference beta radiation fields of the BSS 2

Behrens

2015

J. Inst.

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Level of natural radionuclides in foodstuffs and resultant annual ingestion radiation dose

Abbady

2006

Nuclear Science and Techniques

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Rod phantom dimensions - does size matter?

Brunzendorf

Ambrosi

2009

Radiation Protection Dosimetry

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The international standard ISO 4037-3:1999 recommends a cylindrical polymethyl methacrylate rod phantom of 300 mm length and 19 mm diameter for the calibration of extremity dosimeters worn on the finger. No tolerances are stated. This paper investigates the influence of the actual rod phantom dimensions on the calibration results of finger dosimeters. For this purpose, thermoluminescence detectors were attached to rod phantoms of different size and irradiated at the PTB reference X-ray fields. Rod phantoms with a diameter of (19 +/- 1) mm and a length of at least 100 mm can be considered to be equivalent for the calibration of finger dosimeters, since the variation in the calibration results is below the significance level of 1 %. The decrease in the response towards the edge of the phantom is negligible as long as the distance from the nearest edge exceeds 10 mm.

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Fluence-to-Dose Coefficient Angular Dependence Factors for Rod and Pillar Phantoms Irradiated by Broad Beams of Beta Particles

Cited by 3 publications

References 0 publications

Correction factors for the ISO rod phantom, a cylinder phantom, and the ICRU sphere for reference beta radiation fields of the BSS 2

Correction factors for the ISO rod phantom, a cylinder phantom, and the ICRU sphere for reference beta radiation fields of the BSS 2

Level of natural radionuclides in foodstuffs and resultant annual ingestion radiation dose

Rod phantom dimensions - does size matter?

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