Results 21 to 30 of about 70,225 (338)

Espectroscopia optogalvânica: alguns aspectos relevantes

Química Nova, 2006
In this work we present the optogalvanic effect in ionized gases in an historical perspective. This effect was observed for the first time by Foote and Mohler in 1925, and explained by Penning in 1928 for mixtures (Ne-Ar) and pure gases (or vapours) in ...
Robson Valentim Pereira, Francisco B. T. Pessine   +1 more
doaj   +1 more source

Physical Mechanics, a New Field in Engineering Science [PDF]

, 1953
The purpose of physical mechanics is to predict the engineering behavior of matter in bulk form from the microscopic properties of its molecular and atomic constituents.
Tsien, H. S.
core   +1 more source

A three-dimensional numerical method for modelling weakly ionized plasmas [PDF]

, 2006
Astrophysical fluids under the influence of magnetic fields are often subjected to single-fluid or two-fluid approximations. In the case of weakly ionized plasmas however, this can be inappropriate due to distinct responses from the multiple constituent ...
Alexiades, Brackbill, Ciolek, Cowling, Dedner, Draine, Evans, Falle, Huba, Mestel, Mininni, O'Sullivan, Pandey, Powell, Salmeron, Sano, Sano, Shalybkov, Smith, Spitzer, Spitzer, Stephen O'Sullivan, Stone, Strang, Turlough P. Downes, Tóth, Tóth, Wardle, Wardle, Wardle, Wardle   +30 more
core   +3 more sources

Influence of Nitrogen Admixture on Plasma Characteristics in a dc Argon Glow Discharge and in Afterglow

Atoms, 2019
The present paper is based on the materials of the Invited Lecture presented at 29th Summer School and International Symposium on the Physics of Ionized Gases (28 August 2018–1 September 2018, Belgrade, Serbia). In the paper, the effect of nitrogen
Nikolay A. Dyatko, Yury Z. Ionikh, Anatoly P. Napartovich   +2 more
doaj   +1 more source

IMAPS Observations of Interstellar Neutral Argon and the Implications for Partially Ionized Gas [PDF]

, 1997
We use the absorption features from neutral argon at 1048 and 1066 A to determine interstellar abundances or their lower limits toward nine early-type stars. These features were observed with the Interstellar Medium Absorption Profile Spectrograph (IMAPS)
Ajello J. M., Aldrovandi S. M. V., Bloch J. J., Duley W. W., Edward B. Jenkins, Eiroa C., Fahr H. J., Geiss J., Gillett F. C., Gry C., Hedin A. E., Hibbert A., Lallement R., Mathis J. S., Meyer D. M., Quemerais E., Shull J. M., Smith R. G., Ulysses J. Sofia, Verner D. A., Whittet D. C. B.   +20 more
core   +3 more sources

RF and Microwave Ion Sources Study at Institute of Modern Physics

Plasma, 2021
Intense ion beam production is of high importance for various versatile applications from accelerator injectors to secondary ion mass spectrometry (SIMS). For these purposes, different types of ion beams are needed and, accordingly, the optimum plasma to
Qian Y. Jin, Yu G. Liu, Yang Zhou, Qi Wu, Yao J. Zhai, Liang T. Sun   +5 more
doaj   +1 more source

Onset of Fast Magnetic Reconnection in Partially Ionized Gases

, 2011
We consider quasi-stationary two-dimensional magnetic reconnection in a partially ionized incompressible plasma. We find that when the plasma is weakly ionized and the collisions between the ions and the neutral particles are significant, the transition ...
Balbus, Braginskii, Cowley, De Pontieu, Drake, Ellen G. Zweibel, Heitsch, Hillier, Kulsrud, Lazarian, Leonid M. Malyshkin, Malyshkin, McKee, Sturrock, Sweet   +14 more
core   +1 more source

Spatial Distribution of H2O+ Ions in the Inner Coma of C/2014 Q2 (Lovejoy)

The Astrophysical Journal
Neutral molecules that sublimate from cometary ices (mainly water at ∼1 au from the Sun) are ionized due to solar extreme-ultraviolet radiation and collisions with highly energetic electrons.
Hideyo Kawakita, Yoshiharu Shinnaka, Hitomi Kobayashi   +2 more
doaj   +1 more source

Boundary engineering of porous zinc oxide nanosheets to enhance gas sensing performance

Sensors and Actuators Reports
Zinc oxide (ZnO) based gas sensors are noted for their high sensing response toward a wide range of gases, however, they often face challenges in achieving other required properties due to complex reaction dynamics under different operating conditions ...
Min Young Kim, Haeun Choa, Chul Oh Park, Dung Thi Hanh To, Tran Khanh Phuong Cao, Emily Resendiz Mendoza, Changhyun Jin, Beom Zoo Lee, Nosang Vincent Myung, Kyu Hyoung Lee   +9 more
doaj   +1 more source

Gage measures total radiation, including vacuum UV, from ionized high-temperature gases [PDF]

, 1969
Transient-heat transfer gage measures the total radiation intensity from vacuum ultraviolet and ionized high temperature gases. The gage includes a sensitive piezoelectric crystal that is completely isolated from any ionized flow and vacuum ultraviolet ...
Wood, A. D.
core   +1 more source