Results 21 to 30 of about 2,315,945 (300)

Simulation of grid morphology’s effect on ion optics and the local electric field

AIP Advances, 2022
Electric field ion optics are employed by many scientific instruments for investigating ions, e.g., using time-of-flight mass spectrometers. A common design feature of such instruments is the grounded grid that provides boundaries between regions that ...
Z. Levin, S. Kempf
doaj   +1 more source

Physical aspects of dust–plasma interactions [PDF]

Contributions to Plasma Physics, 2021
AbstractLow‐pressure gas discharge plasmas are known to be strongly affected by the presence of small dust particles. This issue plays a role in the investigations of dust particle‐forming plasmas, where the dust‐induced instabilities may affect the properties of synthesized dust particles.
Pustylnik, Mikhail, Pikalev, Aleksandr, Zobnin, Andrey, Semenov, Igor, Thomas, Hubertus M., Petrov, Oleg   +5 more
openaire   +2 more sources

Physical Modeling of the Zodiacal Dust Cloud [PDF]

Symposium - International Astronomical Union, 2001
This review is based on extensive work done in collaboration with N. Gorkavyi, J. Mather, and T. Taidakova, which aimed at physical modeling of the interplanetary dust (IPD) cloud in the Solar System, i.e., establishing a link between the observable characteristics of the zodiacal cloud and the dynamical and physical properties of the parent minor ...
openaire   +2 more sources

Physical Properties of Cometary Dust [PDF]

International Astronomical Union Colloquium, 1991
AbstractPrior to the 1986 apparition of comet Halley, all attempts to determine the physical properties of cometary dust were limited to remote observations and the analysis of various particles captured by the Earth’s atmosphere. The in situ measurements made by the three spacecraft that passed within 10,000 km of the nucleus provided the first ...
J.A.M. McDonnell, P.L. Lamy, G.S. Pankiewicz   +2 more
openaire   +1 more source

Modelling soil dust aerosol in the Bodélé depression during the BoDEx campaign [PDF]

, 2006
We present regional model simulations of the dust emission events during the Bodélé Dust Experiment (BoDEx) that was carried out in February and March 2005 in Chad. A box model version of the dust emission model is used to test different input parameters
Todd, M., J Helmert (16052072), Dubovik, O., Dubovik, O, J. Helmert, B. Heinold, Tegen, I, R. Washington, Helmert, J, Washington, R, Tegen, I., I Tegen (16051628), Heinold, B, M. Todd, Todd, MC, Heinold, B., Martin Todd (4462747), B Heinold (16051742), I. Tegen, O. Dubovik, Washington, R., O Dubovik (8761467), Helmert, J., R Washington (16051622)   +23 more
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Helicopter brownout - can it be modelled? [PDF]

, 2010
Significant progress has been made to date in modelling, computationally, the formation and development of the dust cloud that forms in the air surrounding the rotorcraft under brownout conditions.
Brown, R.E., Kim, Hyo Wan, Phillips, Catriona, Brown, Richard   +3 more
core   +2 more sources

Diversity in the outcome of dust radial drift in protoplanetary discs [PDF]

, 2014
C. Pinte acknowledges funding from the European Commission’s FP7 (contract PERG06-GA-2009-256513) and the Agence Nationale pour la Recherche of France (contract ANR-2010-JCJC-0504-01). G.
C. Pinte, Pinte, C., G. Laibe, Laibe, G.
core   +1 more source

PHANGS–JWST First Results: Measuring Polycyclic Aromatic Hydrocarbon Properties across the Multiphase Interstellar Medium

The Astrophysical Journal Letters, 2023
Ratios of polycyclic aromatic hydrocarbon (PAH) vibrational bands are a promising tool for measuring the properties of the PAH population and their effect on star formation.
Jérémy Chastenet, Jessica Sutter, Karin Sandstrom, Francesco Belfiore, Oleg V. Egorov, Kirsten L. Larson, Adam K. Leroy, Daizhong Liu, Erik Rosolowsky, David A. Thilker, Elizabeth J. Watkins, Thomas G. Williams, Ashley. T. Barnes, F. Bigiel, Médéric Boquien, Mélanie Chevance, Daniel A. Dale, J. M. Diederik Kruijssen, Eric Emsellem, Kathryn Grasha, Brent Groves, Hamid Hassani, Annie Hughes, Kathryn Kreckel, Sharon E. Meidt, Hsi-An Pan, Miguel Querejeta, Eva Schinnerer, Cory M. Whitcomb   +28 more
doaj   +1 more source

Elliptical dust growth in astrophysical plasmas [PDF]

, 2006
Elongated dust grains exist in astrophysical plasmas. Anisotropic growth of elliptical dust grains, via plasma deposition, occurs if the deposited ions are non-inertial.
D. A. Diver, C. R. Stark, Stark, C.R., Potts, H.E., Diver, D.A., H. E. Potts   +5 more
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PHANGS–JWST First Results: Variations in PAH Fraction as a Function of ISM Phase and Metallicity

The Astrophysical Journal Letters, 2023
We present maps tracing the fraction of dust in the form of polycyclic aromatic hydrocarbons (PAHs) in IC 5332, NGC 628, NGC 1365, and NGC 7496 from JWST/MIRI observations.
Jérémy Chastenet, Jessica Sutter, Karin Sandstrom, Francesco Belfiore, Oleg V. Egorov, Kirsten L. Larson, Adam K. Leroy, Daizhong Liu, Erik Rosolowsky, David A. Thilker, Elizabeth J. Watkins, Thomas G. Williams, Ashley. T. Barnes, Frank Bigiel, Médéric Boquien, Mélanie Chevance, I-Da Chiang, Daniel A. Dale, J. M. Diederik Kruijssen, Eric Emsellem, Kathryn Grasha, Brent Groves, Hamid Hassani, Annie Hughes, Kathryn Kreckel, Sharon E. Meidt, Ryan J. Rickards Vaught, Amy Sardone, Eva Schinnerer   +28 more
doaj   +1 more source