scholarly journals Backward energy-flux for spherically symmetric scalar waves

1986 ◽  
Vol 44 (2) ◽  
pp. 361-365
Author(s):  
J. L. Synge
2010 ◽  
Vol 19 (9) ◽  
pp. 090402
Author(s):  
Meng Qing-Miao ◽  
Jiang Ji-Jian ◽  
Li Zhong-Rang ◽  
Wang Shuai

2020 ◽  
pp. 8-12
Author(s):  
Alexandr V. Oborin ◽  
Anna Y. Villevalde ◽  
Sergey G. Trofimchuk

The results of development of the national primary standard of air kerma, air kerma rate, exposure, exposure rate and energy flux for X-rays and gamma radiation GET 8-2011 in 2019 are presented according to the recommendations of the ICRU Report No. 90 “Key Data for Ionizing-Radiation Dosimetry: Measurement Standards and Applications”. The following changes are made to the equations for the units determination with the standard: in the field of X-rays, new correction coefficients of the free-air ionization chambers are introduced and the relative standard uncertainty of the average energy to create an ion pair in air is changed; in the field of gamma radiation, the product of the average energy to create an ion pair in air and the electron stopping-power graphite to air ratio for the cavity ionization chambers is changed. More accurate values of the units reproduced by GET 8-2019 are obtained and new metrological characteristics of the standard are stated.


1999 ◽  
Vol 53 (1) ◽  
pp. 6-12
Author(s):  
V. G. Dudka ◽  
Yu. V. Svishchov ◽  
Yu. A. Tuchkin

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