Measurement of the Ne (r, t) distribution in a pulsed-discharge column from spectral linewidth

1976 ◽  
Vol 24 (3) ◽  
pp. 280-284 ◽  
Author(s):  
E. F. Gippius ◽  
B. I. Ilyukhin ◽  
V. N. Kolesnikov ◽  
L. I. Shumskaya
Keyword(s):  
Pulsed Discharge ◽  
Discharge Column ◽  
Spectral Linewidth ◽  
T Distribution

scholarly journals Eco-friendly sun lamp for railway facilities

2021 ◽  
Vol 2131 (4) ◽  
pp. 042092
Author(s):  
V F Lapshin
Keyword(s):  
High Pressure ◽  
Light Source ◽  
Unit Length ◽  
Luminous Flux ◽  
Color Temperature ◽  
Pulsed Discharge ◽  
Gas Dynamics Equations ◽  
Discharge Column ◽  
Electric Power Supply ◽  
Wide Range

Abstract The paper considers the possibility of using a pulsed discharge in cesium as an environmentally friendly high quality light source for lighting industrial premises of railway transport facilities. The use of cesium filling of standard sapphire burners of high-pressure sodium lamps and a pulsed mode of electric power supply of the discharge to create a light source has been substantiated. A mathematical model of a high-pressure pulsed discharge in cesium is formulated on the basis of the radiative gas dynamics equations. The discharge was simulated and it was shown that it is possible to create a plasma with a temperature 4000 -7000 K and a pressure of 0.5 - 1.5 at m with the power supplied to the discharge ∼ 100 W/cm in the steady-state combustion mode. The dependence of the discharge lighting characteristics on the amplitude of the current pulses and the amount of cesium in the gas discharge tube is analyzed. It is shown that in a wide range of currents and plasma densities, the color rendering index of the discharge radiation Ra> 95 with luminous efficacy ηV ∼ 70lm/W and more. The average luminous flux emitted per unit length of the discharge column is ∼ 104 lm/cm. The color temperature of the discharge radiation can vary over a wide range of values Tc∼ 3000÷4500 K. It is shown that the color coordinates Xc,Yc of discharge radiation are close to the values Xc,Yc of a blackbody. The use of such a source in conditions of a short daylight hours will make it possible to create practically solar illumination of large production areas.

MULTIVARIATE SKEW t -DISTRIBUTION

Statistics ◽  
2003 ◽  
Vol 37 (4) ◽  
pp. 1-1
Author(s):  
A. K. GUPTA
Keyword(s):  
T Distribution

Oxidation of Simulated Soil Contaminated with Bacteria using Pulsed Discharge

2019 ◽  
Vol 139 (10) ◽  
pp. 433-434
Author(s):  
Takeru Konishi ◽  
Akira Harimaya ◽  
Katsuyuki Takahashi ◽  
Koichi Takaki ◽  
Kohei Obase
Keyword(s):  
Pulsed Discharge

Categorizing Exam Results: t-distribution

2017 ◽  
Vol 1 (11) ◽  
pp. 1-10
Author(s):  
Suresh Akella ◽  
◽  
Girija Akella ◽  
Keyword(s):  
T Distribution

Sebaran Peluang Acak Kontinu, Distribusi Normal, Distribusi Normal Baku, Distribusi T, Distribusi Chi Square, dan Distribusi F

2020 ◽  
Author(s):  
Ahmad Sudi Pratikno
Keyword(s):  
Hypothesis Test ◽  
Standard Normal Distribution ◽  
Process Data ◽  
Nominal Data ◽  
Chi Square ◽  
Stable Curve ◽  
Standard Normal ◽  
Research Findings ◽  
F Distribution ◽  
T Distribution

In statistics, there are various terms that may feel unfamiliar to researcher who is not accustomed to discussing it. However, despite all of many functions and benefits that we can get as researchers to process data, it will later be interpreted into a conclusion. And then researcher can digest and understand the research findings. The distribution of continuous random opportunities illustrates obtaining opportunities with some detection of time, weather, and other data obtained from the field. The standard normal distribution represents a stable curve with zero mean and standard deviation 1, while the t distribution is used as a statistical test in the hypothesis test. Chi square deals with the comparative test on two variables with a nominal data scale, while the f distribution is often used in the ANOVA test and regression analysis.

Spectral linewidth of a grecc laser with added external cavity

1985 ◽  
Vol 21 (8) ◽  
pp. 353 ◽  
Author(s):  
K.-Y. Liou ◽  
C.A. Burrus
Keyword(s):  
External Cavity ◽  
Spectral Linewidth

scholarly journals New Transition and Energy Levels of Three-Times Ionized Krypton (Kr IV)

Atoms ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 48
Author(s):  
M. Raineri ◽  
M. Gallardo ◽  
J. Reyna Almandos ◽  
A. G. Trigueiros ◽  
C. J. B. Pagan
Keyword(s):  
Transition Probabilities ◽  
Energy Levels ◽  
Pulsed Discharge ◽  
Core Polarization ◽  
Polarization Effects ◽  
Hartree Fock ◽  
Theta Pinch ◽  
New Energy ◽  
First Time

A capillary pulsed-discharge and a theta-pinch were used to record Kr spectra in the region of 330–4800 Å. A set of 168 transitions of these spectra were classified for the first time. We extended the analysis to twenty-five new energy levels belonging to 3s23p24d, 3s23p25d even configurations. We calculated weighted transition probabilities (gA) for all of the experimentally observed lines and lifetimes for new energy levels using a relativistic Hartree–Fock method, including core-polarization effects.

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