scholarly journals WAVE PACKETS SCATTERED BY NON-PERIODIC BRAGG-TYPE LAYERED STRUCTURES

2013 ◽  
Vol 52 ◽  
pp. 57-78 ◽  
Author(s):  
Valentine F. Borulko ◽  
Oleg O. Drobakhin ◽  
Dmitry V. Sidorov
Keyword(s):  
Wave Packets ◽  
Layered Structures

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.

Effect of high pressure-temperature on silicon layered structures as determined by X-ray diffraction and electron microscopy

2004 ◽  
Vol 27 (1-3) ◽  
pp. 415-418
Author(s):  
J. Bak-Misiuk ◽  
A. Misiuk ◽  
J. Ratajczak ◽  
A. Shalimov ◽  
I. Antonova ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
Layered Structures ◽  
X Ray Diffraction ◽  
X Ray

The dynamics of wave packets of highly-excited states of atoms and molecules

1991 ◽  
Vol 161 (7) ◽  
pp. 41 ◽  
Author(s):  
I.Sh. Averbukh ◽  
N.F. Perel'man
Keyword(s):  
Excited States ◽  
Wave Packets ◽  
Atoms And Molecules

Thermal self-action of acoustic wave packets in a liquid

1995 ◽  
Vol 165 (10) ◽  
pp. 1145 ◽  
Author(s):  
F.V. Bunkin ◽  
Gennadii A. Lyakhov ◽  
K.F. Shipilov
Keyword(s):  
Acoustic Wave ◽  
Wave Packets

SPECTRAL INTERFEROMETRY IN THICKNESS MEASUREMENTS OF OPTICALLY TRANSPARENT LAYERED STRUCTURES

2017 ◽  
Vol 76 (13) ◽  
pp. 1181-1192
Author(s):  
K. A. Lukin ◽  
D. N. Tatyanko ◽  
A. B. Pikh ◽  
O. V. Zemlyanyi
Keyword(s):  
Layered Structures ◽  
Spectral Interferometry ◽  
Optically Transparent ◽  
Thickness Measurements
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