High-level gamma dosimetry using potassium bichromate

Gommaer De Baere; M.J. De Proost; T.K. Van Elsen

High-level gamma dosimetry using potassium bichromate

Gommaer De Baere, M.J. De Proost, T.K. Van Elsen

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Abstract

A chemical dosimeter using K₂Cr₂O₇ in a diluted sulphuric acid solution is described. The decrease in optical density caused by the reduction of potassium bichromate is measured spectrophotometrically at a wave-length of 350 nm or 440 nm depending on the initial K₂Cr₂O₇ concentration.
The yields of the radiolytical reduction in a 1 N sulphuric acid solution are : for 1.5 x 10^-3M K₂Cr₂O₇ : 0.390 ± 0.010 ; for 2.5 x 10^-4 M K₂Cr₂O₇ : 0.408 ± 0.012. These G values are independent of dose rate, but they depend on the H⁺concentration.
The potassium bichromate dosimeter usable for absorbed doses between 10⁵ and 3x10⁶rad permits the determination of gamma fluxes up to 5x10⁷rad/h.

Original language	English
Publisher	SCK CEN
Number of pages	13
State	Published - Oct 1966

Publication series

Name	SCK CEN Reports
Publisher	SCK CEN
No.	BLG-407

Access to Document

BLG-407Final published version, 4.67 MBLicense: Unspecified

Cite this

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title = "High-level gamma dosimetry using potassium bichromate",

abstract = "A chemical dosimeter using K2Cr2O7 in a diluted sulphuric acid solution is described. The decrease in optical density caused by the reduction of potassium bichromate is measured spectrophotometrically at a wave-length of 350 nm or 440 nm depending on the initial K2Cr2O7 concentration. The yields of the radiolytical reduction in a 1 N sulphuric acid solution are : for 1.5 x 10-3 M K2Cr2O7 : 0.390 ± 0.010 ; for 2.5 x 10-4 M K2Cr2O7 : 0.408 ± 0.012. These G values are independent of dose rate, but they depend on the H+ concentration. The potassium bichromate dosimeter usable for absorbed doses between 105 and 3x106 rad permits the determination of gamma fluxes up to 5x107 rad/h.",

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T1 - High-level gamma dosimetry using potassium bichromate

AU - De Baere, Gommaer

AU - De Proost, M.J.

AU - Van Elsen, T.K.

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Y1 - 1966/10

N2 - A chemical dosimeter using K2Cr2O7 in a diluted sulphuric acid solution is described. The decrease in optical density caused by the reduction of potassium bichromate is measured spectrophotometrically at a wave-length of 350 nm or 440 nm depending on the initial K2Cr2O7 concentration. The yields of the radiolytical reduction in a 1 N sulphuric acid solution are : for 1.5 x 10-3 M K2Cr2O7 : 0.390 ± 0.010 ; for 2.5 x 10-4 M K2Cr2O7 : 0.408 ± 0.012. These G values are independent of dose rate, but they depend on the H+ concentration. The potassium bichromate dosimeter usable for absorbed doses between 105 and 3x106 rad permits the determination of gamma fluxes up to 5x107 rad/h.

AB - A chemical dosimeter using K2Cr2O7 in a diluted sulphuric acid solution is described. The decrease in optical density caused by the reduction of potassium bichromate is measured spectrophotometrically at a wave-length of 350 nm or 440 nm depending on the initial K2Cr2O7 concentration. The yields of the radiolytical reduction in a 1 N sulphuric acid solution are : for 1.5 x 10-3 M K2Cr2O7 : 0.390 ± 0.010 ; for 2.5 x 10-4 M K2Cr2O7 : 0.408 ± 0.012. These G values are independent of dose rate, but they depend on the H+ concentration. The potassium bichromate dosimeter usable for absorbed doses between 105 and 3x106 rad permits the determination of gamma fluxes up to 5x107 rad/h.

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