ASTM E1026-04e1
Standard Practice for Using the Fricke Reference-Standard Dosimetry System

Standard No.

ASTM E1026-04e1

Release Date

2004

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E1026-13

Latest

ASTM E1026-13

Scope

1.1 This practice covers the procedures for preparation, testing and using the acidic aqueous ferrous ammonium sulfate solution dosimetry system to measure absorbed dose to water when exposed to ionizing radiation. The system consists of a dosimeter and appropriate analytical instrumentation. The system will be referred to as the Fricke system. It is classified as a reference-standard dosimetry system (see ISO/ASTM 51261).

1.2 The practice describes the spectrophotometric analysis procedures for the Fricke dosimeter.

1.3 This practice applies only to gamma rays, x-rays (bremsstrahlung), and high-energy electrons.

1.4 This practice applies provided the following are satisfied:

1.4.1 The absorbed dose range shall be from 20 to 400 Gy (1).

1.4.2 The absorbed-dose rate does not exceed 10 ⁶ Gys¹ (2).

1.4.3 For radioisotope gamma-ray sources, the initial photon energy is greater than 0.6 MeV. For x-rays (bremsstrahlung), the initial energy of the electrons used to produce the photons is equal to or greater than 2 MeV. For electron beams, the initial electron energy is greater than 8 MeV (see ICRU Reports 34 and 35).

Note 18212;The lower energy limits given are appropriate for a cylindrical dosimeter ampoule of 12-mm outside diameter. Corrections for dose gradients across an ampoule of that diameter or less are not required.

1.4.4 The irradiation temperature of the dosimeter should be within the range of 10 to 60C.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM E1026-04e1 Referenced Document

• ASTM C912 Standard Practice for Designing a Process for Cleaning Technical Glasses
• ASTM D1193 Standard Specification for Reagent Water
• ASTM E170 Standard Terminology Relating to Radiation Measurements and Dosimetry
• ASTM E178 Standard Practice for Dealing With Outlying Observations
• ASTM E275 Standard Practice for Describing and Measuring Performance of Ultraviolet, Visible, and Near-Infrared Spectrophotometers
• ASTM E666 Standard Practice for Calculating Absorbed Dose From Gamma or X Radiation
• ASTM E668 Standard Practice for Application of Thermoluminescence-Dosimetry (TLD) Systems for Determining Absorbed Dose in Radiation-Hardness Testing of Electronic Devices
• ASTM E925 Standard Practice for Monitoring the Calibration of Ultraviolet-Visible Spectrophotometers whose Spectral Slit Width does not Exceed 2 nm
• ASTM E958 Standard Practice for Measuring Practical Spectral Bandwidth of Ultraviolet-Visible Spectrophotometers
• ISO/ASTM 51205 Practice for use of a ceric-cerous sulfate dosimetry system
• ISO/ASTM 51261 Practice for calibration of routine dosimetry systems for radiation processing
• ISO/ASTM 51707 Guide for estimation of measurement uncertainty in dosimetry for radiation processing

ASTM E1026-04e1 history

• 2013 ASTM E1026-13 Standard Practice for Using the Fricke Dosimetry System
• 2004 ASTM E1026-04e1 Standard Practice for Using the Fricke Reference-Standard Dosimetry System
• 2004 ASTM E1026-04 Standard Practice for Using the Fricke Reference Standard Dosimetry System
• 2003 ASTM E1026-03 Standard Practice for Using the Fricke Reference Standard Dosimetry System
• 1995 ASTM E1026-95 Standard Practice for Using the Fricke Reference Standard Dosimetry System