Power transmission factor through the sheath in deuterium plasmas for virgin as well as nanostructured tungsten

Abstract A Klein-Gordon-type equation is derived for the wave propagation in an ideal, uniform waveguide, and its quantum-mechanical interpretation is given. The "cross-section" concept is introduced for a waveguide and the power transmission factor is obtained by using standard methods of quantum mechanics. The spinorial formalism is also employed for deriving the equivalent Dirac-type equation, and the perturbation theory is applied for computing the frequency shifts. The general applicability of the quantum-mechanical concepts to the waveguides theory is discussed

Download Full-text

Experimental measurements of the particle flux and sheath power transmission factor profiles in the divertor of DIII-D

Journal of Nuclear Materials ◽

10.1016/j.jnucmat.2013.01.095 ◽

2013 ◽

Vol 438 ◽

pp. S467-S471 ◽

Cited By ~ 4

Author(s):

D. Donovan ◽

D. Buchenauer ◽

J. Watkins ◽

A. Leonard ◽

C. Wong ◽

...

Keyword(s):

Particle Flux ◽

Power Transmission ◽

Transmission Factor ◽

Experimental Measurements

Download Full-text

Method for synthesis of matching devices for broadband radio engineering systems with unstable load impedance based on the method of real frequencies

Doklady BGUIR ◽

10.35596/1729-7648-2021-19-5-70-78 ◽

2021 ◽

Vol 19 (5) ◽

pp. 70-78

Author(s):

I. A. Dubovik ◽

P. V. Boykachev

Keyword(s):

Power Transmission ◽

Operating Conditions ◽

Transmission Factor ◽

Coefficient Function ◽

Engineering Systems ◽

Load Impedance ◽

Radio Engineering ◽

Broadband Radio ◽

Complex Criterion ◽

Combination Of Methods

The aim of this work is to develop a method for the synthesis of matching devices for broadband radio engineering systems with varying impedance in different operating conditions. To achieve this goal, a criterion (complex criterion) is proposed for minimizing the value of the modulus of the sensitivity invariant of the reflection coefficient function to a change in the load impedance with restrictions on the square of the deviation of the power transmission ratio from a given level. It is proposed to use a combination of methods of real frequencies together with the shown complex criterion, which made it possible to implement an effective approach to the synthesis of matching devices for broadband radio engineering systems with an unstable load impedance. To verify the approach, a matching device was synthesized, which made it possible to reduce the loss of the power transmission factor level transmitted to the UHF/VHF antenna of the AD-44 / CW-TA-30-512 range when it is located in various operating conditions by at least 50 % in relation to losses obtained with a standard matching device.

Download Full-text