The Ozone and Aerosol Fine Structure experiment: Observing the fine structure of ozone and aerosol distribution in the atmosphere from the Salyut 7 Orbiter: 3. Experimental results

1991 ◽  
Vol 96 (D10) ◽  
pp. 18661 ◽  
Author(s):  
N. F. Elansky ◽  
G. M. Grechko ◽  
M. E. Plotkin ◽  
O. V. Postylyakov
Keyword(s):  
Fine Structure ◽  
Experimental Results ◽  
Aerosol Distribution

Fine structure in the charge ratio of muons at large zenith angles

1968 ◽  
Vol 46 (10) ◽  
pp. S309-S312 ◽  
Author(s):  
G. N. Kelly ◽  
P. K. MacKeown ◽  
S. S. Said ◽  
A. W. Wolfendale
Keyword(s):  
Fine Structure ◽  
Zenith Angle ◽  
Experimental Results ◽  
Charge Ratio

Preliminary experimental results are presented of observations on the charge ratio of muons as a function of energy and of angle at large zenith angles found using the Durham horizontal spectrograph. There is some evidence for a maximum of the charge ratio at about 20 GeV, the magnitude of which increases with increasing zenith angle. Possible explanations of the effect are discussed.

scholarly journals XYZ states at BESIII

2019 ◽  
Vol 212 ◽  
pp. 02003
Author(s):  
Zhentian Sun
Keyword(s):  
Fine Structure ◽  
Partial Wave ◽  
Decay Mode ◽  
Cross Sections ◽  
Precise Measurement ◽  
Partial Wave Analysis ◽  
Experimental Results ◽  
Wave Analysis ◽  
Decay Modes

In this proceeding, I report the most recent experimental results from BESIII about the XYZ sates. Two new X(3872) decay modes are observed, which is X(3872) → ωJ/ψ and X(3872) → π0χc1(1P). Precise measurement of cross sections of various channels reveal more fine structure about Y states. To study the property of Zc states, the Jp of Zc(3900) is determined with partial wave analysis, and a hint of new decay mode of Zc±(3900) → ρ±ηc are observed.

Large-scale CIV3 calculations of fine-structure energy levels and radiative rates in Al-like copper

2009 ◽  
Vol 87 (8) ◽  
pp. 895-907 ◽  
Author(s):  
G. P. Gupta ◽  
A. Z. Msezane
Keyword(s):  
Fine Structure ◽  
Configuration Interaction ◽  
Large Scale ◽  
Radiative Decay ◽  
Energy Levels ◽  
Decay Rates ◽  
Experimental Results ◽  
Oscillator Strengths ◽  
Correct Identification ◽  
Excitation Energies

We have performed large-scale CIV3 calculations of excitation energies from the ground state for 97 fine-structure levels as well as of oscillator strengths and radiative decay rates for all electric-dipole-allowed and intercombination transitions among the fine-structure levels of the terms belonging to the (1s22s22p6)3s23p, 3s3p2, 3s23d, 3p3, 3s3p3d, 3p23d, 3s3d2, 3s24s, 3s24p, 3s24d, 3s24f, and 3s3p4s configurations of Cu XVII. These states are represented by very extensive configuration-interaction (CI) wave functions obtained with the CIV3 (Configuration-Interaction Version 3) computer code of Hibbert. The important relativistic effects in intermediate coupling are incorporated by means of the Breit–Pauli Hamiltonian, which consists of the nonrelativistic term plus the one-body mass correction, Darwin term, and spin–orbit, spin–other-orbit, and spin–spin operators. To keep our calculated energy splittings as close as possible to the experimental values (wherever available), we have made small adjustments to the diagonal elements of the Hamiltonian matrices. Our calculated excitation energies, including their ordering, are in excellent agreement with the available experimental results. From our radiative decay rates we have also calculated radiative lifetimes of some fine-structure levels. The mixing among several fine-structure levels is found to be so strong that the correct identification of these levels becomes very difficult. We believe that our extensive calculations will be useful to experimentalists in identifying the fine-structure levels in their future work. In this calculation we also predict new data for several fine-structure levels where no other theoretical and (or) experimental results are available.

scholarly journals Fine structure of helium and light helium-like ionsThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at École de Physique, les Houches, France, 30 May – 4 June, 2010.

2011 ◽  
Vol 89 (1) ◽  
pp. 95-101 ◽  
Author(s):  
Krzysztof Pachucki ◽  
Vladimir A. Yerokhin
Keyword(s):  
Experimental Data ◽  
Fine Structure ◽  
Nuclear Charge ◽  
Structure Constant ◽  
Experimental Results ◽  
Fine Structure Constant ◽  
Atomic Systems ◽  
Fine Structure Splitting ◽  
Theoretical Predictions ◽  
Structure Splitting

Calculational results are presented for the fine structure splitting of the 23P state of helium and helium-like ions with nuclear charge Z up to 10. Theoretical predictions are in agreement with the latest experimental results for the helium fine structure intervals as well as with the most of the experimental data available for light helium-like ions. Comparing the theoretical value of the 23P0-23P1 interval in helium with experimental results (Zelevinsky et al. Phys. Rev. Lett. 95, 203001 (2005)), we determine the value of the fine structure constant α with an accuracy of 31 ppb.

OZAFS space experiment for observing the fine structure of the ozone and aerosol distribution in the atmosphere

1992 ◽  
Vol 12 (10) ◽  
pp. 157-160
Author(s):  
G.M. Grechko ◽  
N.Ph. Elansky ◽  
M.E. Plotkin ◽  
O.V. Postylyakov ◽  
S.A. Ukhinov
Keyword(s):  
Fine Structure ◽  
Space Experiment ◽  
Aerosol Distribution

scholarly journals Temporal and spectral features of the (3/2) ω0 spatial fine structure in laser irradiated planar targets

1986 ◽  
Vol 4 (2) ◽  
pp. 223-230 ◽  
Author(s):  
Lin Zunqi ◽  
Tan Weihan ◽  
Gu Min ◽  
Mei Guang ◽  
Pan Chengming ◽  
...  
Keyword(s):  
Fine Structure ◽  
Simple Model ◽  
Broad Band ◽  
Experimental Results ◽  
Spectral Features ◽  
Thermal Correction ◽  
Spectral Shifts ◽  
Fine Structures ◽  
Spectrally Resolved ◽  
Doppler Correction

Both temporally and spectrally resolved fine structures of 90° lateral (3/2)ω0 harmonic emission were experimentally observed. The existence of (3/2)ω0 harmonic filaments is attributed to formation from the moving filament bottom at its transient nc/4 surface. The double hump structure with its intense red hump of laterally emitted (3/2)ω0 spectrum can also be explained by a Doppler correction in addition to the thermal correction. Estimation of both red and blue spectral shifts with our simple model is qualitatively consistent with experimental results. Experiments showed that the (3/2)ω0 emission was evidently suppressed by using a broad band laser. This may be promising for superhot electron suppression.

Internal rotation in dimethyl acetylene

1954 ◽  
Vol 226 (1166) ◽  
pp. 306-314 ◽  
Keyword(s):  
Fine Structure ◽  
Vibrational Spectrum ◽  
Internal Rotation ◽  
Energy Levels ◽  
Experimental Results ◽  
Rotational Structure ◽  
Resolving Power ◽  
Methyl Groups ◽  
Absorption Bands

The vibrational spectrum of dimethyl acetylene has been remeasured with better resolving power than hitherto, and the rotational fine structure of some perpendicular type bands has been partly analyzed. The energy levels of a molecule of this kind in which internal rotation of methyl groups may arise have been re-examined theoretically and the rotational structure of the absorption bands has been more clearly defined than previously. The experimental results are consistent with the assumption of unrestricted internal rotation of the methyl groups, and the Coriolis factors ξ i for several vibrations have been determined.

Diagnostics of Gold Laser Plasmas

1988 ◽  
Vol 102 ◽  
pp. 357-360
Author(s):  
J.C. Gauthier ◽  
J.P. Geindre ◽  
P. Monier ◽  
C. Chenais-Popovics ◽  
N. Tragin ◽  
...  
Keyword(s):  
Experimental Results ◽  
Pure Gold ◽  
Electronic Temperature ◽  
X Ray ◽  
Laser Plasmas ◽  
Collisional Radiative Model ◽  
Radiative Model

AbstractIn order to achieve a nickel-like X ray laser scheme we need a tool to determine the parameters which characterise the high-Z plasma. The aim of this work is to study gold laser plasmas and to compare experimental results to a collisional-radiative model which describes nickel-like ions. The electronic temperature and density are measured by the emission of an aluminium tracer. They are compared to the predictions of the nickel-like model for pure gold. The results show that the density and temperature can be estimated in a pure gold plasma.

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