Synergism effects in combined action of electric field and inert diluent on gas-phase flames

1987 ◽  
Vol 23 (2) ◽  
pp. 170-172 ◽  
Author(s):  
G. A. Gulyaev ◽  
G. A. Popkov ◽  
Yu. N. Shebeko
Keyword(s):  
Electric Field ◽  
Gas Phase ◽  
Inert Diluent ◽  
Combined Action

Joint action of an inert diluent and electric field on gas-phase flames

1988 ◽  
Vol 24 (6) ◽  
pp. 700-702 ◽  
Author(s):  
G. A. Gulyaev ◽  
G. A. Popkov ◽  
Yu. N. Shebeko ◽  
A. P. Korolenok
Keyword(s):  
Electric Field ◽  
Gas Phase ◽  
Joint Action ◽  
Inert Diluent

scholarly journals Hydroxyl, water, ammonia, carbon monoxide and neutral carbon towards the Sgr A complex

2013 ◽  
Vol 9 (S303) ◽  
pp. 97-99
Author(s):  
R. Karlsson ◽  
Aa. Sandqvist ◽  
Å. Hjalmarson ◽  
A. Winnberg ◽  
K. Fathi ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
High Temperature ◽  
Open Access ◽  
Gas Phase ◽  
Combined Action ◽  
Circumnuclear Disk ◽  
Sgr A ◽  
Grain Surface ◽  
Very High ◽  
High Temperature Gas

AbstractWe observed Hydroxyl, water, ammonia, carbon monoxide and neutral carbon towards the +50 km s−1 cloud (M−0.02−0.07), the circumnuclear disk (CND) and the +20 km s−1 (M−0.13−0.08) cloud in the Sgr A complex with the VLA, Odin and SEST. Strong OH absorption, H2O emission and absorption lines were seen at all three positions. Strong C18O emissions were seen towards the +50 and +20 km s−1 clouds. The CND is rich in H2O and OH, and these abundances are considerably higher than in the surrounding clouds, indicating that shocks, star formation and clump collisions prevail in those objects. A comparison with the literature reveals that it is likely that PDR chemistry including grain surface reactions, and perhaps also the influences of shocks has led to the observed abundances of the observed molecular species studied here. In the redward high-velocity line wings of both the +50 and +20 km s−1 clouds and the CND, the very high H2O abundances are suggested to be caused by the combined action of shock desorption from icy grain mantles and high-temperature, gas-phase shock chemistry. Only three of the molecules are briefly discussed here. For OH and H2O three of the nine observed positions are shown, while a map of the C18O emission is provided. An extensive paper was recently published with Open Access (Karlsson et al. 2013, A&A 554, A141).

Effect of combined action of electric field and light on gliding of the easy axis in nematic liquid crystals

2008 ◽  
Vol 35 (5) ◽  
pp. 569-579 ◽  
Author(s):  
S. V. Pasechnik ◽  
A. V. Dubtsov ◽  
D. V. Shmeliova ◽  
V. A. Tsvetkov ◽  
V. G. Chigrinov
Keyword(s):  
Liquid Crystals ◽  
Electric Field ◽  
Easy Axis ◽  
Nematic Liquid Crystals ◽  
Combined Action

STUDIES OF ELECTRONIC PROPERTIES OF MEDIUM AND LARGE MOLECULES ORIENTED IN A STRONG UNIFORM ELECTRIC FIELD

2001 ◽  
Vol 15 (27) ◽  
pp. 3471-3502 ◽  
Author(s):  
WEI KONG
Keyword(s):  
Electric Field ◽  
Small Molecules ◽  
Gas Phase ◽  
Variation Method ◽  
Detailed Knowledge ◽  
Translational Energy ◽  
Spectroscopic Techniques ◽  
Transition Dipole ◽  
Polarization Spectroscopy ◽  
Large Molecules

Polarization spectroscopy of oriented gas phase medium and large molecules achieved via a uniform DC electric field provides a means to determine the direction of transition dipoles. In this article, the theoretical background of this orientation method, its characterization, and its application in studies of electronic transitions, will be presented. Mature gas phase spectroscopic methods have been developed for studies of small molecules, but studies of medium to large sized species are faced with special challenges. These challenges arise from differences between large and small molecules: large systems typically exhibit fast internal conversion, slow dissociation, and low translational energy release upon dissociation. Thus conventional gas phase spectroscopic techniques are not applicable to derive the direction of the transition dipole. DC induced orientation offers a solution to this problem. It is ideal for studies of systems with small rotational constants and large permanent dipoles, even when a detailed knowledge of the molecular structure, such as the direction of the permanent dipole in the molecular frame, is unknown. The degree of orientation can be calculated using the linear variation method, given the rotational temperature and the size of the permanent dipole. The associated experimental observables can be used to confirm the effect of orientation, or to determine the direction of a transition dipole. These observables include the ratio of excitation probabilities under different polarization directions and spectroscopic features. In some cases, the direction and size of the permanent dipole of the excited electronic state can also be determined. Examples of this type of polarization spectroscopy are presented for asymmetric tops such as diazines, acetelye-HF clusters, nitroaromatics and butyl nitrite. Illustrations of pendular states and its application in linear and diatomic molecules are also briefed. Applications of this method for studies of large molecules and potential pitfalls will be discussed.

The strain response of piezoelectric multilayer actuators under combined action of electric field and in-plane uniform load

1997 ◽  
Vol 199 (1) ◽  
pp. 261-270
Author(s):  
Eriks Klotins ◽  
Karlis Kundzins ◽  
Bjorn Andersen ◽  
Andrew James
Keyword(s):  
Electric Field ◽  
Strain Response ◽  
Uniform Load ◽  
Combined Action ◽  
Multilayer Actuators
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