Preliminary research on dosimetry methods of 252Cf neutron after-loading radiotherapy machine / 中国医学装备
China Medical Equipment
;
(12): 11-13,14, 2014.
Article
in Chinese
| WPRIM
| ID: wpr-598780
ABSTRACT
Objective:
To study the dose measurements methods of neutron andγ-ray for 252Cf neutron after-load radiotherapy machine.Methods:
To measure the neutron-γmixed field with one ion chamber that have the similar sensitivities of neutron andγ-ray, another ion chamber that only have sensitivities for γ-ray, little sensitivity for neutron. Verification measurement results with calculated values.Results:
Calculate key parameters, measure neutron andγ-ray dose rate at the position of 2.5cm, 5cm, 7.5cm and 10cm from the 252Cf, the Maximum deviation is-5.22%compared with calculated values.Conclusion:
The method of twin ion chamber can measure the neutron andγ-ray mixed field dose.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
China Medical Equipment
Year:
2014
Type:
Article
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