Collisional cross satellites of the superfine structure multiplets in the spectrum of the SiF 4

2005 ◽  
Author(s):  
Igor R. Krylov ◽  
Vladimir A. Polischuk ◽  
Michael A. Tsygankov
Keyword(s):  
Superfine Structure

Fluid Dynamics in Critical Nozzles Revealed by Measurements (Keynote)

2003 ◽  
Author(s):  
Masahiro Ishibashi
Keyword(s):  
Discharge Coefficient ◽  
Precise Measurement ◽  
Field Measurements ◽  
Boundary Layer Transition ◽  
3D Flow ◽  
Layer Transition ◽  
Shock Interactions ◽  
Critical Nozzles ◽  
Superfine Structure ◽  
Recovery Temperature

The paper describes primary calibration of high-precision nozzles (HPNs), which have ideal geometries, at critical condition, theoretical calculation of the discharge coefficient to be verified by the primary calibration, concept of fluid dynamical standard using HPN, precise measurement of boundary layer transition in HPNs in terms of flowrate, superfine structure in the critical flowrate, discrepancy which can occur between primary calibrations and field applications of critical nozzles, and 3D flow velocity field measurements based on recovery temperature, which visualizes many interesting phenomena in axi-symmetric transonic flow as shock interactions, acceleration by edge, reflection of shocks, Fano flow and so on.

scholarly journals Dynamics of the superfine structure in the Orion KL jet

2002 ◽  
Vol 206 ◽  
pp. 96-99
Author(s):  
Leonid I. Matveyenko ◽  
Phil J. Diamond ◽  
David A. Graham
Keyword(s):  
Molecular Cloud ◽  
Angular Resolution ◽  
Position Angle ◽  
Maser Emission ◽  
Quiescent Period ◽  
Brightness Temperatures ◽  
Rotation Axes ◽  
Superfine Structure ◽  
High Level ◽  
Bright Source

We have studied the superfine structure of the active H2O maser region in Orion KL with an angular resolution of ≤ 0.3 × 0.7 mas. The high level of H2O maser emission from 1979-1988 was due to an accretion disk, which is divided into five groups of protoplanetary rings. The peak brightness temperatures of the structures was Tpeak = 1013-14 K. The region is located in the OMC-1 molecular cloud, VLSR ⋍ 7.74 km/s. The cloud amplifies by more than two orders of magnitude the emission from the structures, whose radial velocities are within the maser window ±0.3 km/s. Due to this, the velocity of the H2O super maser emission is constant. In the quiescent period of 1995 a 6 AU jet was discovered, PA = −32°, Tb ⋍ 1011K. In 1998 the jet's brightness temperature increased by more than 3 orders of magnitude. Initially the jet's position angle was PA = −45°, and then changed to PA = −38°. During the period of decreasing emission in 1999 the jet had changed its form and became a helix, that suggests the precession of the rotation axes. In the central part of the jet there is a compact bright source - “the ejector” - with Tejc = 1017 K.

scholarly journals Fine and Superfine Structure of the Decameter–Hectometer Type II Burst on 7 June 2011

Solar Physics ◽  
2015 ◽  
Vol 290 (7) ◽  
pp. 2031-2042 ◽  
Author(s):  
V. V. Dorovskyy ◽  
V. N. Melnik ◽  
A. A. Konovalenko ◽  
A. I. Brazhenko ◽  
M. Panchenko ◽  
...  
Keyword(s):  
Type Ii ◽  
Superfine Structure

The Comparative Mössbauer Analysis of Superfine Structure of Hadfield Steel upon Different Kinds of Severe Deformation

2011 ◽  
Vol 319-320 ◽  
pp. 13-23 ◽  
Author(s):  
V.A. Shabashov ◽  
A.E. Zamatovsky ◽  
L.G. Korshunov ◽  
A.V. Litvinov
Keyword(s):  
Plastic Deformation ◽  
Short Range ◽  
Room Temperature ◽  
Precipitation Hardening ◽  
Effective Field ◽  
Hadfield Steel ◽  
Magnetic Characteristics ◽  
Short Range Ordering ◽  
Superfine Structure ◽  
Mössbauer Analysis

Severe plastic deformation (friction, compression shear, filing or rolling) of Hadfield steel leads to the growth of the internal effective field on 57Fe cores, removal of the magnetic degeneracy in spectra, and the extension of the paraprocess up to room temperature. The observed change of the magnetic characteristics is explained by the deformation-induced redistribution of carbon and short-range ordering of carbon and manganese. Since the magnetic degeneracy is removed in the Hadfield steel upon deformation, it is possible to consider a mechanism of magnetic precipitation hardening, which is realized in local magnetically ordered regions of the structure containing Mn-C pairs.

The Seyfert Galaxy NGC 1275: Superfine Structure

2019 ◽  
Vol 45 (8) ◽  
pp. 475-489
Author(s):  
L. I. Matveyenko ◽  
S. S. Sivakon
Keyword(s):  
Seyfert Galaxy ◽  
Superfine Structure ◽  
Ngc 1275
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