Nuclear Techniques ›› 2016, Vol. 39 ›› Issue (12): 120201-120201.doi: 10.11889/j.0253-3219.2016.hjs.39.120201

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

Study and measurement of the water absorbed dose in 10-50 kV X-ray

ZHOU Zhenjie1,2, REN Shiwei1, WU Jinjie2, LIU Ying2,3, Yu Jili2,4, ZHAO Rui2,4, KANG Jiajia1,2, YANG Yang2   

  1. 1 Hebei University of Science and Technology, Shijiazhuang 050018, China;
    2 National Institute of Metrology, Beijing 100029, China;
    3 University of South China, Hengyang 421001, China;
    4 Chengdu University of Technology, Chengdu 610059, China
  • Received:2016-03-07 Revised:2016-10-15 Online:2016-12-10 Published:2016-12-10
  • Supported by:

    Supported by National Natural Science Foundation of China (No.11505178), Research and Development Project of National Scientific Research Institute (No.25-CXNL1401)

Abstract:

Background: The water absorbed dose in X-ray is an important physical quantity of radiation dosimetry, whose accurate measurement is important in radiation therapy. Purpose: The research and measurement of water absorbed dose in low-energy X-ray can provide great technical support for improving the traceability system of water absorption dose and widening the calibration range of measurement department. Methods: The water absorbed dose in 10-50 kV X-ray was measured using PTW23344 ionization chamber in radiation field. Results: Finally, the water absorbed dose scale factor of the PTW23344 ionization chamber and water absorbed dose at the front surface of the 6-cm organic glass were obtained. Conclusion: This work provides the foundation for establishment of domestic X-ray water absorbed dose standard and its international comparison.

Key words: Water absorbed dose in X-ray, Half value layer, Homogeneous coefficient, Perturbation factor, Back scattering factor

CLC Number: 

  • TL99