A measuring system of absorbed dose standard for electron beam radiation processing

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A measuring system of absorbed dose standard for electron beam radiation processing

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- A measuring system of absorbed dose standard for electron beam radiation processing
- NUCLEAR TECHNIQUES Issue 4, (1995)
- 作者机构：
  
  上海市计量技术研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB98
- Published：01 April 1995
- 稿件说明：
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[1]张利民,顾继青,徐佩玲,白益华,叶东胜,吴斌.电子束辐射加工吸收剂量标准的测量系统[J].核技术,1995(04):238-246.

A measuring system of absorbed dose standard for electron beam radiation processing[J]. Nuclear techniques, 1995, (4).
[1]张利民,顾继青,徐佩玲,白益华,叶东胜,吴斌.电子束辐射加工吸收剂量标准的测量系统[J].核技术,1995(04):238-246. DOI：

A measuring system of absorbed dose standard for electron beam radiation processing[J]. Nuclear techniques, 1995, (4). DOI：

摘要

论述了准绝热型热解石墨吸收剂量量热计及其测量系统的设计和实验研究。量热计吸收体和外壳出具有各向异性特性的热解石墨构成，并利用石墨自身作为加热电阻器建立电加热校验和模拟单元，温升的理论值与实测值之比为１．００８，重复性标准偏差为０．６％，在能量０、５－３．０ＭｅＶ和剂量１－５×１０２ｋＧｙ范围内测量电子束吸收剂量的总不确定度为±２．７％（Ｋ＝２）。用该量热计校准粉末型丙氨酸／ＥＳＲ剂量计和三种薄膜剂量计，建立了标准量值传递系统。对温升曲线的钝化、热平衡、量热比值的测量和误差等进行了讨论。

Abstract

The design and experiments of an absorbed dose calorimeter in quasi-adiabatic mode of operation and its measuring system are described. The absoption disk and outer shell of the calorimeter are made of anisotropic pyrolytic graphite. The graphite itself is used as heating resistor of the electrical heating unit

for the purpose of check and simulation. The ratio of calculated value and experimental value for temperature rising is 1.008. The standard deviation is less than 0.6%. The total uncertainty of absorbed dose determination. with the graphite calorimeter approximetes to 2.7% （K=2） for the 0.5-3.0MeV electron beam in the dose range of 1-5×102kGy. The powder alanine/ESR dosimeter and plastic thin-film dosimeter can

be calibrated by the calorimeter. The passivation of temperature rising curve

heat equilibrium

measurement of calorimetric ratio and its error are also discussed in this paper.

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