Interaction of second-mode wave packets with an axisymmetric expansion corner

2021 ◽  
Vol 62 (7) ◽  
Author(s):  
Cameron S. Butler ◽  
Stuart J. Laurence
Keyword(s):  
Wave Packets ◽  
Mode Wave ◽  
Second Mode

Properties of whistler mode wave packets at the leading edge of steepened magnetosonic waves: Comet Giacobini-Zinner

1989 ◽  
Vol 37 (2) ◽  
pp. 167-182 ◽  
Author(s):  
Bruce T. Tsurutani ◽  
Edward J. Smith ◽  
Armando L. Brinca ◽  
Richard M. Thorne ◽  
Hiroshi Matsumoto
Keyword(s):  
Wave Packets ◽  
Leading Edge ◽  
Whistler Mode ◽  
Mode Wave ◽  
Whistler Mode Wave

Whistler mode wave packets in the Earth's foreshock region

Nature ◽  
1980 ◽  
Vol 287 (5781) ◽  
pp. 417-420 ◽  
Author(s):  
M. Hoppe ◽  
C. T. Russell
Keyword(s):  
Wave Packets ◽  
Whistler Mode ◽  
Mode Wave ◽  
Whistler Mode Wave

Bragg scattering of EM waves from ion-beam mode wave packets

1981 ◽  
Vol 23 (1) ◽  
pp. 1-14 ◽  
Author(s):  
M J Alport ◽  
N d'Angelo
Keyword(s):  
Ion Beam ◽  
Wave Packets ◽  
Bragg Scattering ◽  
Mode Wave ◽  
Beam Mode

scholarly journals Radiation from an electron beam in a magnetized plasma: Whistler mode wave packets

2006 ◽  
Vol 111 (A11) ◽  
Author(s):  
N. Brenning ◽  
I. Axnäs ◽  
M. A. Raadu ◽  
E. Tennfors ◽  
M. Koepke
Keyword(s):  
Electron Beam ◽  
Wave Packets ◽  
Magnetized Plasma ◽  
Whistler Mode ◽  
Mode Wave ◽  
Whistler Mode Wave

scholarly journals Growth and breakdown of wave packets in a high-speed boundary layer

2016 ◽  
Vol 806 ◽  
pp. 1-4
Author(s):  
Aleksandr N. Shiplyuk
Keyword(s):  
High Speed ◽  
Wave Packets ◽  
Structural Evolution ◽  
Visualization Technique ◽  
High Enthalpy ◽  
Hypersonic Boundary Layers ◽  
Reflected Shock ◽  
Second Mode ◽  
Individual Wave ◽  
Short Time

The recent study of Laurence et al. (J. Fluid Mech., vol. 797, 2016, pp. 471–503) develops a new Schlieren-based technique for investigating instabilities and transition in hypersonic boundary layers. This method enables pioneering measurements in a reflected-shock wind tunnel of the characteristics of the second mode of instability on a slender cone, within very short time scales (approximately 1 ms). The visualization technique was shown to resolve the structural evolution of individual wave packets. It was revealed that the disturbance strength concentrates near the wall for high-enthalpy conditions.

Interferometric (Fourier-Spectroscopic) Measurement of Electron Energy Distributions

1990 ◽  
Vol 48 (2) ◽  
pp. 110-111 ◽  
Author(s):  
F. Hasselbach ◽  
A. Schäfer
Keyword(s):  
Group Velocity ◽  
Wave Packets ◽  
Index Of Refraction ◽  
Electron Wave ◽  
Fringe Contrast ◽  
Faraday Cage ◽  
Optical Index ◽  
Wien Filter ◽  
Coherent Wave ◽  
Electric And Magnetic Fields

Möllenstedt and Wohland proposed in 1980 two methods for measuring the coherence lengths of electron wave packets interferometrically by observing interference fringe contrast in dependence on the longitudinal shift of the wave packets. In both cases an electron beam is split by an electron optical biprism into two coherent wave packets, and subsequently both packets travel part of their way to the interference plane in regions of different electric potential, either in a Faraday cage (Fig. 1a) or in a Wien filter (crossed electric and magnetic fields, Fig. 1b). In the Faraday cage the phase and group velocity of the upper beam (Fig.1a) is retarded or accelerated according to the cage potential. In the Wien filter the group velocity of both beams varies with its excitation while the phase velocity remains unchanged. The phase of the electron wave is not affected at all in the compensated state of the Wien filter since the electron optical index of refraction in this state equals 1 inside and outside of the Wien filter.

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