scholarly journals Thermal tides in the upper cloud layer of Venus as deduced from the emission angle dependence of the brightness temperature by Akatsuki/LIR

2021 ◽  
Author(s):  
Masahiro Akiba ◽  
Makoto Taguchi ◽  
Tetsuya Fukuhara ◽  
Takeshi Imamura ◽  
Toru Kouyama ◽  
...  
Keyword(s):  
Brightness Temperature ◽  
Emission Angle ◽  
Cloud Layer ◽  
Angle Dependence ◽  
Thermal Tides

Si 2p Core Level Shifts of the Epitaxial SiON Layer on a SiC(0001), Studied by Photoemissin Spectroscopy

2011 ◽  
Vol 675-677 ◽  
pp. 15-19 ◽  
Author(s):  
T. Shirasawa ◽  
S. Tanaka ◽  
T. Muro ◽  
Y. Tamenori ◽  
Y. Harada ◽  
...  
Keyword(s):  
Chemical Shifts ◽  
Emission Angle ◽  
Core Level ◽  
Silicon Oxynitride ◽  
Photoemission Spectroscopy ◽  
Structure Model ◽  
Epitaxial Silicon ◽  
Angle Dependence ◽  
Spectral Components ◽  
Level Shifts

The epitaxial silicon oxynitride (SiON) layer grown on a 6H-SiC(0001) surface is studied with core level photoemission spectroscopy. Si 2p spectra show three spectral components other than the bulk one. Chemical shifts and emission angle dependence of these components are well explained within a framework of a determined structure model of the SiON layer.

DYNAMICAL SIMULATION OF EMISSION ANGLE DEPENDENCE OF FRAGMENTS SPIN IN HEAVY ION FUSION–FISSION REACTIONS

2010 ◽  
Vol 19 (07) ◽  
pp. 1451-1461 ◽  
Author(s):  
M. R. PAHLAVANI ◽  
D. NADERI ◽  
S. M. MIRFATHI
Keyword(s):  
Experimental Data ◽  
Heavy Ion ◽  
Emission Angle ◽  
Fission Reactions ◽  
Angle Dependence ◽  
Dynamical Simulation ◽  
Deformation Parameters ◽  
Average Spin ◽  
Neck Thickness ◽  
Heavy Ion Fusion

In this paper, a formalism consisting of multi-dimensional Langevin equation (LE) and Scission point Transition State Model (SCTSM) have been applied to study the angle dependence of fragment's average spin for 16 O + 209 Bi and 16 O + 232 Th systems. The influence of asymmetry and deformation parameters, neck thickness of compound nucleus and pre-scission neutron multiplicity on the fragment's average spin is discussed. Results obtained using this approach are in better agreement with the experimental data as compared with the SCTSM.

Emission angle dependence of fission fragment spin in12C,16O,and19F+232Threactions

1998 ◽  
Vol 58 (2) ◽  
pp. R616-R620 ◽  
Author(s):  
D. V. Shetty ◽  
R. K. Choudhury ◽  
B. K. Nayak ◽  
D. M. Nadkarni ◽  
S. S. Kapoor
Keyword(s):  
Fission Fragment ◽  
Emission Angle ◽  
Angle Dependence

Emission-angle dependence of fission fragment spin

1992 ◽  
Vol 46 (4) ◽  
pp. 1445-1450 ◽  
Author(s):  
T. Datta ◽  
S. P. Dange ◽  
H. Naik ◽  
Satya Prakash
Keyword(s):  
Fission Fragment ◽  
Emission Angle ◽  
Angle Dependence

scholarly journals Generation of gravity waves from thermal tides in the Venus atmosphere

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Norihiko Sugimoto ◽  
Yukiko Fujisawa ◽  
Hiroki Kashimura ◽  
Katsuyuki Noguchi ◽  
Takeshi Kuroda ◽  
...  
Keyword(s):  
Gravity Waves ◽  
General Circulation ◽  
Three Dimensional ◽  
Circulation Model ◽  
Cloud Layer ◽  
Dimensional Structure ◽  
Wave Radiation ◽  
Small Scale ◽  
Thermal Tides ◽  
Venus Atmosphere

AbstractGravity waves play essential roles in the terrestrial atmosphere because they propagate far from source regions and transport momentum and energy globally. Gravity waves are also observed in the Venus atmosphere, but their characteristics have been poorly understood. Here we demonstrate activities of small-scale gravity waves using a high-resolution Venus general circulation model with less than 20 and 0.25 km in the horizontal and vertical grid intervals, respectively. We find spontaneous gravity wave radiation from nearly balanced flows. In the upper cloud layer (~70 km), the thermal tides in the super-rotation are primary sources of small-scale gravity waves in the low-latitudes. Baroclinic/barotropic waves are also essential sources in the mid- and high-latitudes. The small-scale gravity waves affect the three-dimensional structure of the super-rotation and contribute to material mixing through their breaking processes. They propagate vertically and transport momentum globally, which decelerates the super-rotation in the upper cloud layer (~70 km) and accelerates it above ~80 km.

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