scholarly journals HORN ANTENNA GENERATING ELECTROMAGNETIC FIELD WITH ORBITAL ANGULAR MOMENTUM

2017 ◽  
Vol 60 ◽  
pp. 57-65 ◽  
Author(s):  
Min Huang ◽  
Xianzheng Zong ◽  
Zai-Ping Nie
Keyword(s):  
Electromagnetic Field ◽  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Horn Antenna

scholarly journals Spin angular momentum of proton spin puzzle in complex octonion spaces

2017 ◽  
Vol 14 (07) ◽  
pp. 1750102 ◽  
Author(s):  
Zi-Hua Weng
Keyword(s):  
Electromagnetic Field ◽  
Quantum Mechanics ◽  
Dipole Moment ◽  
Angular Momentum ◽  
Angular Velocity ◽  
Orbital Angular Momentum ◽  
Magnetic Dipole Moment ◽  
Proton Spin ◽  
Spin Angular Momentum ◽  
Precessional Motion

The paper focuses on considering some special precessional motions as the spin motions, separating the octonion angular momentum of a proton into six components, elucidating the proton angular momentum in the proton spin puzzle, especially the proton spin, decomposition, quarks and gluons, and polarization and so forth. Maxwell was the first to use the quaternions to study the electromagnetic fields. Subsequently the complex octonions are utilized to depict the electromagnetic field, gravitational field, and quantum mechanics and so forth. In the complex octonion space, the precessional equilibrium equation infers the angular velocity of precession. The external electromagnetic strength may induce a new precessional motion, generating a new term of angular momentum, even if the orbital angular momentum is zero. This new term of angular momentum can be regarded as the spin angular momentum, and its angular velocity of precession is different from the angular velocity of revolution. The study reveals that the angular momentum of the proton must be separated into more components than ever before. In the proton spin puzzle, the orbital angular momentum and magnetic dipole moment are independent of each other, and they should be measured and calculated respectively.

Orbital angular momentum of inhomogeneous electromagnetic field produced by polarized optical beams

2004 ◽  
Author(s):  
Igor I. Mokhun ◽  
Alexander Mokhun ◽  
Ju Viktorovskaya ◽  
Dan Cojoc ◽  
Oleg V. Angelsky ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Optical Beams

scholarly journals Deep-subwavelength features of photonic skyrmions in a confined electromagnetic field with orbital angular momentum

2019 ◽  
Vol 15 (7) ◽  
pp. 650-654 ◽  
Author(s):  
Luping Du ◽  
Aiping Yang ◽  
Anatoly V. Zayats ◽  
Xiaocong Yuan
Keyword(s):  
Electromagnetic Field ◽  
Angular Momentum ◽  
Orbital Angular Momentum

scholarly journals Orbital angular momentum of Liénard–Wiechert fields

2019 ◽  
Vol 2019 (8) ◽  
Author(s):  
H Kawaguchi ◽  
M Katoh
Keyword(s):  
Electromagnetic Field ◽  
Angular Momentum ◽  
Charged Particle ◽  
Periodic Orbit ◽  
Radiation Field ◽  
General Expression ◽  
Orbital Angular Momentum ◽  
Particle Motion ◽  
Charged Particles ◽  
Relativistic Charged Particle

Abstract We derive a general expression for the electromagnetic field radiated by a relativistic charged particle with arbitrary periodic orbit, in the form of multi-pole expansion of the Liénard–Wiechert potential, which explicitly includes the charged particle motion. Using this expression, we discuss the orbital angular momentum radiated from a relativistic charged particle. It has recently been indicated that the radiation emitted by circularly orbiting charged particles carries well-defined orbital angular momentum. We show that, even for the general cases of arbitrary periodic orbits, the radiation field possesses well-defined orbital angular momentum.

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