scholarly journals Implementation of the toroidal absorption cell with multi-layer patterns by a single ring surface

2020 ◽  
Vol 45 (21) ◽  
pp. 5897 ◽  
Author(s):  
Hong Chang ◽  
Shiling Feng ◽  
Xuanbing Qiu ◽  
Huiyan Meng ◽  
Guqing Guo ◽  
...  
Keyword(s):  
Absorption Cell ◽  
Single Ring

How a sheperd guides a sheep herd?

1984 ◽  
Vol 75 ◽  
pp. 331-337
Author(s):  
Richard Greenberg
Keyword(s):  
Point Of View ◽  
Single Ring ◽  
Damping Effects ◽  
Ring Particle

ABSTRACTThe mechanism by which a shepherd satellite exerts a confining torque on a ring is considered from the point of view of a single ring particle. It is still not clear how one might most meaningfully include damping effects and other collisional processes into this type of approach to the problem.

scholarly journals Exploring the robustness of Keplerian signals to the removal of active and telluric features

2020 ◽  
Vol 500 (1) ◽  
pp. 548-557
Author(s):  
M Lisogorskyi ◽  
H R A Jones ◽  
F Feng ◽  
R P Butler ◽  
S Vogt
Keyword(s):  
Monte Carlo ◽  
High Resolution ◽  
Monte Carlo Simulations ◽  
Large Amplitude ◽  
Absorption Cell ◽  
Stellar Rotation ◽  
Long Period ◽  
Active Line ◽  
Low Amplitude ◽  
Rotation Signal

ABSTRACT We examine the influence of activity- and telluric-induced radial velocity (RV) signals on high-resolution spectra taken with an iodine absorption cell. We exclude 2-$\mathring{\rm A}$ spectral chunks containing active and telluric lines based on the well-characterized K1V star α Centauri B and illustrate the method on Epsilon Eridani – an active K2V star with a long-period, low-amplitude planetary signal. After removal of the activity- and telluric-sensitive parts of the spectrum from the RV calculation, the significance of the planetary signal is increased and the stellar rotation signal disappears. In order to assess the robustness of the procedure, we perform Monte Carlo simulations based on removing random chunks of the spectrum. Simulations confirm that the removal of lines impacted by activity and tellurics provides a method for checking the robustness of a given Keplerian signal. We also test the approach on HD 40979, which is an active F8V star with a large-amplitude planetary signal. Our Monte Carlo simulations reveal that the significance of the Keplerian signal in the F star is much more sensitive to wavelength. Unlike the K star, the removal of active lines from the F star greatly reduces the RV precision. In this case, our removal of a K star active line from an F star does not a provide a simple useful diagnostic because it has far less RV information and heavily relies on the strong active lines.

A Contribution to the Microwave Double Resonance Technique and Measurements of Collision Induced Transitions

1979 ◽  
Vol 34 (5) ◽  
pp. 571-574 ◽  
Author(s):  
H. Dreizier ◽  
W. Schrepp ◽  
R. Schwarz
Keyword(s):  
Millimeter Wave ◽  
Double Resonance ◽  
Absorption Cell ◽  
Resonance Technique ◽  
Wave Region

Abstract A construction for a versatile absorption cell is presented, which may be used for a large variety of double resonance experiments in the radiofrequency, microwave and millimeter wave region. Some measurements of collision induced transitions are reported.

Absorption Cell Attachment for a Welch Densichron Reflection Unit

1961 ◽  
Vol 33 (4) ◽  
pp. 651-652
Author(s):  
F. J. Miller ◽  
H. C. Jones
Keyword(s):  
Cell Attachment ◽  
Absorption Cell

Method for the selective excitation of molecules by the radiation emitted from a laser with an absorption cell in its resonator

1975 ◽  
Vol 5 (8) ◽  
pp. 1018-1019 ◽  
Author(s):  
Rafael V Ambartsumyan ◽  
V S Letokhov ◽  
S A Maksimov ◽  
V I Mishin ◽  
N P Furzikov
Keyword(s):  
Selective Excitation ◽  
Absorption Cell

scholarly journals Parameterization of a comprehensive explicit model for single-ring infiltration

2021 ◽  
pp. 126801
Author(s):  
M. Iovino ◽  
M.R. Abou Najm ◽  
R. Angulo-Jaramillo ◽  
V. Bagarello ◽  
M. Castellini ◽  
...  
Keyword(s):  
Explicit Model ◽  
Single Ring
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