Radon Registration with an Electret Diffusion Chamber

Pretzsch, G.; Börner, E.; Lehmann, R.; Sarenio, O.

doi:10.1093/oxfordjournals.rpd.a079886

Cited by 6 publications

(7 citation statements)

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“…in order to prevent any charge leakage over the long period of storage at room environmental conditions [17,18,31]. The charge potential measurements and storing of the charged Teflon discs were performed in a laboratory environment at 26±1 • C temperature and 29±1% relative humidity.…”

Section: Jinst 13 P06013mentioning

confidence: 99%

“…13], [15]. Among them, corona discharge method has been found to be rather simple by generating an inhomogeneous electrical field for production of cold plasma at an atmospheric pressure [16][17][18]. The corona discharge occurs when the potential gradient at a point in a fluid (such as air) is high enough to ionize the air to become conductive but not high enough to cause any electrical breakdowns.…”

Section: Introductionmentioning

confidence: 99%

“…From different corona discharge methods such as "single point-to-plane corona poling system" [19][20][21][22][23][24][25], "corona triode system" [16][17][18][19]26], "multiple-needle corona poling system" [25,[27][28][29], the "modified single point-to-plane corona poling rotating system" recently invented by us proved to have some unique characteristics for electret ionization chamber dosimeter production [30,31]. This method has been designed, constructed and operated successfully in our laboratory for electret production using Teflon electret discs (especially in large areas) with an excellent surface charge uniformity, especially the edges [30,31].…”

Section: Introductionmentioning

confidence: 99%

“…In radiation dosimetry, usually negatively or positively charged thick Teflon electret discs (e.g. millimeter) are used due to its better good mechanical stability during handling, charging and its voltage measurement [17,[33][34][35]. It is generally known that thick and large electret discs with charge uniformity (in particular at the edges) and stability is highly desirable for dosimetry applications.…”

Section: Introductionmentioning

confidence: 99%

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Surface potential stability of large-area Teflon PTFE electret dosimeters of different thicknesses

Sohrabi

Komijani

2018

J. Inst.

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The effects of charge polarity and thickness on the surface charge potential stability responses of large-area Teflon polytetrafluoroethylene (PTFE) discs electrostatically charged by a new “modified single point-to-plane corona poling rotating system” were studied. Large-area Teflon discs (6 cm diameter) with 0.2, 0.5 and 1 mm thicknesses were used to produce both negatively or positively charged Teflon discs, at the same charging conditions. The deposited charge potential stability of the Teflon discs of different thicknesses monitored by a non-contacting electrostatic voltmeter for an extended time were monitored up to 77 days. Some inter-related parameters such as surface charge potential and external electrostatic field, internal electrostatic field, surface charge density, and the storage duration were also studied. The thick large-area Teflon disc electrets produced provided a steady-state charge stability on either negative (0.2, 0.5 and 1 mm thick) or positive (1 mm thick) surface charge potentials for the long period studied. The Teflon electret discs produced demonstrated having the highest charge potential stability in thicker electrets (1 mm), either negative or positive polarity, with provision of high potential for different applications in general and radiation protection dosimetry in particular.

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Section: Jinst 13 P06013mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Surface potential stability of large-area Teflon PTFE electret dosimeters of different thicknesses

Sohrabi

Komijani

2018

J. Inst.

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“…A resposta de um dosímetro de eletreto para uma atmosfera contendo tritio foi mostrada por Miki e aI (49). Medidas da atividade do tri tio(sO) e radônio (51) no ar foram também realizadas. Uma boa análise teórica das cama ras de ionização de eletreto planas e cilíndricas pode ser encontrada também nos trabalhos de Miki e Ikeya (52…”

Section: Introduçaounclassified