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Method for measuring personal dosimeter energy graded scales

A dosimeter and grading technology, applied to dosimeters, etc., can solve problems such as inability to meet low-energy ray exposure measurements

Inactive Publication Date: 2012-05-30
CHINA INST FOR RADIATION PROTECTION
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Problems solved by technology

[0004] The purpose of the present invention is to provide a personal dosimeter energy classification scale measurement method for the situation that the current general-purpose X and γ-ray personal dosimeters cannot meet the requirements of low-energy ray exposure measurement, so that one dosimeter can meet the requirements of more occasions. The need for personal dosimetry

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the examples.

[0014] The invention adopts the method of using different scale coefficients for different energy rays to solve the problem that the current general-purpose X and gamma ray personal dosimeters cannot meet the low-energy ray irradiation measurement.

[0015] The user needs to know in advance the approximate energy range of the occasion where the dosimeter will be used. Generally, in medical fields such as interventional radiotherapy and X-ray diagnosis, the radiation field rays are mainly X-rays below 80KeV; in most fields of the nuclear industry and medical fields such as gamma knife therapy, the radiation field rays are mainly above 50KeV. Therefore, the precondition of "knowing in advance the approximate energy range of the occasion where the dosimeter is located" can generally be satisfied.

[0016] The specific implementation is mainly realized by scale and software. Put th...

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Abstract

The invention belongs to the technical field of radiation protection and measurement and particularly relates to a method for measuring personal dosimeter energy graded scales. The method comprises the following steps of: respectively placing a personal dosimeter in a low-energy standard field and a high-energy standard field to obtain corresponding scale factors respectively, and storing the two scale factors in the dosimeter; pre-estimating the radiation ray energy range of a radioactive field applied by the personal dosimeter; and according to the estimation condition of the radiation ray energy range, calling the scale factors of different grades in the dosimeter to measure radiation dose. The requirement on personal dose measurement in more occasions can be met by using one dosimeter.

Description

technical field [0001] The invention belongs to the technical field of radiation protection and measurement, and in particular relates to a method for measuring the energy classification scale of a personal dosimeter. Background technique [0002] X, γ-ray personal dosimeters are mainly used for personal dose monitoring of X, γ-ray radiation by personnel engaged in radiation work. This type of dosimeter has the characteristics of intuitive reading, reliable performance, easy to carry, and simple operation. It is widely used in the nuclear industry and It is widely used in the field of radiology. The dosimeter is generally calibrated in the standard field of the standard source to obtain the scale coefficient, and then use the scale coefficient to carry out specific radiation dose measurement work. [0003] At present, the applicable energy range of domestic electronic personal dosimeters for X and γ-ray dose measurement is usually between 50KeV and 1.5MeV. This measurement ...

Claims

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Application Information

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IPC IPC(8): G01T1/02
Inventor 陈宝维张志勇
Owner CHINA INST FOR RADIATION PROTECTION
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