Zobrazeno 1 - 10
of 22
pro vyhledávání: '"J. Vilppola"'
Autor:
F. J. Crary, Andrew J. Coates, J. Vilppola, Richard E. Hartle, D. T. Young, David G. Simpson, Edward C. Sittler, Scott Bolton, Jean-Jacques Berthelier, Robert E. Johnson, David J. McComas, Karoly Szego, A. M. Rymer, N. André, Daniel B. Reisenfeld, Fritz M. Neubauer, Howard Smith, John T. Steinberg
Publikováno v:
Planetary and Space Science. 54:1211-1224
The Cassini plasma spectrometer (CAPS) instrument made measurements of Titan's plasma environment when the Cassini Orbiter flew through the moon's plasma wake October 26, 2004 (flyby TA). Initial CAPS ion and electron measurements from this encounter
Autor:
Pekka Janhunen, Walter Schmidt, J. Vilppola, Esa Kallio, Kalevi Mursula, P. Tanskanen, I. Sillanpää
Publikováno v:
Advances in Space Research. 38:799-805
Titan, the largest moon of Saturn, forms a unique plasma interaction with the Kronian corotating plasma. Titan's dense and nitrogen rich atmosphere is the primary source of the nitrogen torus around Titan's orbit through the subsonic and super-Alfven
Autor:
P. Tanskanen, Jean-Jacques Berthelier, K. McCabe, Väinö Kelha, T. W. Hill, J. T. Gosling, K. R. Svenes, Raymond Goldstein, B. T. Narheim, Robert E. Johnson, J. M. Illiano, A. Ruitberg, Michel Blanc, F. J. Crary, R. P. Bowman, J. D. Furman, D. T. Young, Sándor Szalai, Kimmo Ahola, C. Zinsmeyer, Andrew J. Coates, D. Anderson, Kalevi Mursula, G. Dirks, T. Luntama, Kerrington D. Smith, Raúl A. Baragiola, Michelle F. Thomsen, Kai Viherkanto, Alun Preece, S. Bakshi, Manuel Grande, T. L. Booker, H. Hannula, M. Wüest, H. Huomo, P. J. Casey, Scott Bolton, Tomi Ylikorpi, T. Vollmer, B. L. Barraclough, T. E. Wahl, Jane E. Nordholt, James L. Burch, D. M. Delapp, David J. McComas, Karoly Szego, E. C. Sittler, P. Jensen, N. Eaker, Sylvestre Maurice, Christer Holmlund, Herbert O. Funsten, R. K. Black, D. R. Linder, J. Rudzki, J. Vilppola, M. A. Johnson
Publikováno v:
Measurement Techniques in Space Plasmas:Particles
Young, D T, Berthelier, J J, Blanc, M, Burch, J L, Coates, A J, Goldstein, R, Grande, M, Hill, T W, Johnson, R E, Kelha, V, Mccomas, D J, Sittler, E C, Svenes, K R, Szegö, K, Tanskanen, P, Ahola, K, Anderson, D, Bakshi, S, Baragiola, R A, Barraclough, B L, Black, R K, Bolton, S, Booker, T, Bowman, R, Casey, P, Crary, F J, Delapp, D, Dirks, G, Eaker, N, Funsten, H, Furman, J D, Gosling, J T, Hannula, H, Holmlund, C, Huomo, H, Illiano, J M, Jensen, P, Johnson, M A, Linder, D R, Luntama, T, Maurice, S, Mccabe, K P, Mursula, K, Narheim, B T, Nordholt, J E, Preece, A, Rudzki, J, Ruitberg, A, Smith, K, Szalai, S, Thomsen, M F, Viherkanto, K, Vilppola, J, Vollmer, T, Wahl, T E, Wüest, M, Ylikorpi, T & Zinsmeyer, C 2004, ' Cassini plasma spectrometer investigation ', Space Science Reviews, vol. 114, no. 1-4, pp. 1-112 . https://doi.org/10.1007/s11214-004-1406-4
ResearcherID
Young, D T, Berthelier, J J, Blanc, M, Burch, J L, Coates, A J, Goldstein, R, Grande, M, Hill, T W, Johnson, R E, Kelha, V, Mccomas, D J, Sittler, E C, Svenes, K R, Szegö, K, Tanskanen, P, Ahola, K, Anderson, D, Bakshi, S, Baragiola, R A, Barraclough, B L, Black, R K, Bolton, S, Booker, T, Bowman, R, Casey, P, Crary, F J, Delapp, D, Dirks, G, Eaker, N, Funsten, H, Furman, J D, Gosling, J T, Hannula, H, Holmlund, C, Huomo, H, Illiano, J M, Jensen, P, Johnson, M A, Linder, D R, Luntama, T, Maurice, S, Mccabe, K P, Mursula, K, Narheim, B T, Nordholt, J E, Preece, A, Rudzki, J, Ruitberg, A, Smith, K, Szalai, S, Thomsen, M F, Viherkanto, K, Vilppola, J, Vollmer, T, Wahl, T E, Wüest, M, Ylikorpi, T & Zinsmeyer, C 2004, ' Cassini plasma spectrometer investigation ', Space Science Reviews, vol. 114, no. 1-4, pp. 1-112 . https://doi.org/10.1007/s11214-004-1406-4
ResearcherID
The Cassini Plasma Spectrometer (CAPS) will make comprehensive three-dimensional mass-resolved measurements of the full variety of plasma phenomena found in Saturn's magnetosphere. Our fundamental scientific goals are to understand the nature of satu
Autor:
J. Vilppola, Kalevi Mursula
Publikováno v:
Solar Physics. 221:337-349
Recent helioseismic observations have found strong fluctuations at a period of about 1.3 years in the rotation speed around the tachocline in the deep solar convection layer. Similar mid-term quasi-periodicities (MTQP; periods between 1–2 years) ar
Publikováno v:
Solar Physics. 212:201-207
Several recent studies have reported quasi-periodicities with a period between 1 and 2 years (to be called here `mid-term quasi-periodicities') in various heliospheric parameters, like solar wind speed, interplanetary magnetic field, cosmic rays, and
Publikováno v:
Review of Scientific Instruments. 72:3662-3669
The ion beam spectrometer (IBS) is one of the three spectrometers in the Cassini plasma spectrometer instrument aboard the Cassini/Huygens spacecraft. The IBS is a very high energy resolution hemispherical electrostatic analyzer. The design values of
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Publikováno v:
Review of Scientific Instruments. 67:1494-1501
To obtain very high (∼1%) energy resolution with spherical‐section electrostatic analyzers requires high precision in both fabrication and in the alignment process. In order to aid in the calibration of the instrument and to help minimize fabrica
Publikováno v:
Vilppola, J, Keisala, J, Tanskanen, P & Huomo, H 1993, ' Optimization of hemispherical electrostatic analyzer manufacturing with respect to resolution requirements ', Review of Scientific Instruments, vol. 64, no. 8, pp. 2190-2194 . https://doi.org/10.1063/1.1143958
Electrostatic analyzers with different geometries have been used extensively in space plasma investigations. When the energy resolution requirements are such that ΔE/E≊10% the instrument is rather simple to design and to manufacture. However, when
Autor:
Scott Bolton, Abigail Rymer, John T. Steinberg, J. Vilppola, N. André, F. J. Crary, Jean-Jacques Berthelier, Richard E. Hartle, D. T. Young, Edward C. Sittler, Robert E. Johnson, Andrew J. Coates, David J. McComas, David G. Simpson, Karoly Szego, Howard Smith, Fritz M. Neubauer, Daniel B. Reisenfeld
Publikováno v:
Geophysical Research Letters. 33
The Cassini Plasma Spectrometer (CAPS) instrument made measurements of Titan s plasma environment when the Cassini Orbiter flew through the moon s plasma wake October 26,2004 (flyby TA) and December 13,2004 (flyby TB). Preliminary CAPS ion and electr