778 resultados para Watson, Matt
Resumo:
A kinetic approach is used to develop a theory of electrostatic probes in a fully ionized plasma in the presence of a magnetic field. A consistent asymptotic expansion is obtained assuming that the electron Larmor radius is small compared to the radius of the probe. The order of magnitude of neglected terms is given. It is found that the electric potential within the tube of force defined by the cross section of the probe decays non-mono tonic ally from the probe; this bump disappears at a certain probe voltage and the theory is valid up to this voltage. The transition region, which extends beyond plasma potential, is not exponential. The possible saturation of the electron current is discussed. Restricted numerical results are given; they seem to be useful for weaker magnetic fields down to the zero-field limit. Extensions of the theory a r e considered.
Resumo:
An analysis of the electrostatic plasma instabilities excited by the application of a strong, uniform, alternating electric field is made on the basis of the Vlasov equation. A very general dispersion relation is obtained and discussed. Under the assumption W 2 O » C 2 pi. (where wO is the applied frequency and wpi the ion plasma frequency) a detailed analysis is given for wavelengths of the order of or large compared with the Debye length. It is found that there are two types of instabilities: resonant (or parametric) and nonresonant. The second is caused by the relative streaming of ions and electrons, generated by the field; it seems to exist only if wO is less than the electron plasma frequency wpe. The instability only appears if the field exceeds a certain threshold, which is found.
Resumo:
On the basis of the BBGKY hierarchy of equations an expression is derived for the response of a fully ionized plasma to a strong, high-frequency electric field in the limit of infinite ion mass. It is found that even in this limit the ionion correlation function is substantially affected by the field. The corrections to earlier nonlinear results for the current density appear to be quite ssential. The validity of the model introduced by Dawson and Oberman to study the response to a vanishingly small field is confirmed for larger values of the field when the eorrect expression for the ion-ion correlations i s introduced; the model by itself does not yield such an expression. The results have interest for the heating of the plasma and for the propagation of a strong electromagnetic wave through the plasma. The theory seems to be valid for any field intensity for which the plasma is stable.
Resumo:
Contains an itemized list of costs for painting and glazing tasks to be completed and supplies needed by Watson for Holden Chapel. Tasks include painting Doctor Warren's room twice, painting window sashes and shutters, transporting glass from Boston, and setting each window pane. Supplies needed include oil, white lead, and putty.
Resumo:
Front Row: Anthony Mitchell, Pat Fitzgerald, David Ritter, Allen Bishop, Chris Zurbrugg, Phil Webb, Jamie Morris, Erik Campbell, Doug Mallory, Bob Cernak, Ernie Bock, Don Lessner, Rick Stites, Bob Stites.
2nd Row: Andy Borowski, Dave Chester, Dave Folkertsma, Michael Dames, John Vitale, Andre McIntyre, John Elliott, Mark Messner, Steve Thibert, Monte Robbins, Billy Harris, John Willingham, Mike Husar, Carlitos Bostic, Bo Schembechler.
3rd Row: Rick Hassel, Bobby Abrams, Derrick Walker, Jeff Brown, David Arnold, Dave Dever, Brent White, John Duerr, Dave Mandel, Scott Mandel, Michael Taylor, Demetrius Brown, John Kolesar, Mike Gillette.
4th Row: Ernie Holloway, Rick Sutkiewicz, Keith Cooper, J.J. Grant, Keith Mitchell, Dean Dingman, Pat Olszewski, David Weil, Joe Holland, John Herrmann, Frank Petroff, Olatide Ogunfitidim, Sean LaFontaine, Mike DeBoer.
5th Row: Vince Washington, Scott Herrala, David Key, Mike Teeter, John Milligan, Greg McMurtry, John Plantz, Joel Boyden, Warde Manuel, Jarrod Bunch, Allen Jefferson, Chris Calloway, Doug Matton, Gulam Khan.
6th Row: Mark Gutzwiller, Jeff Tubo, Marc Spencer, Marc Ramirez, T.J. Osman, Scott Smykowski, Tom Dohring, Doug Daugherty, Mike Kerr, Curtis Feaster, Vada Murray, Tim Williams, Tracy Williams, Trey Walker.
7th Row: Sean Eastman, Byron Lawson, Dave Knight, Todd Plate, Greg Ziegler, Steve Zacharias, Huemartin Robinson, Tony Boles, Chris Horn, Mike Edwards, Stu Duncan, Dave Herrick, Brian Reid, Ken Mouton, Chris D'Esposito.
8th Row: Eric Bush, Wilbur Odom, Erick Anderson, Brian Townsend, Ron Zielinski, Dave Diebolt, Greg Skrepenak, Dave Dingman, Alex Marshall, Chris Bohn, Rusty Fishtner, Ken Sollom, Otis Williams, Ra-Mon Watkins.
9th Row: Shawn Watson, Carlos Smith, Yale VanDyne, Mike Evans, Dave Ritter, Matt Elliott, Dan Jokisch, Mark Soehnlen, Lance Dottin, Neil Simpson, Kevin Owen, Jim Sinclair, Bill Madden, J.D. Carlson, John Rodney.
10th Row: Aaron Studwell, Jon Falk, Mike Gittleson, Mike Walters, Damon Taylor, Leon Morton, Dave Caputo, Brad Moyer, Colin Rudolph, Eric Traupe, David Papp, Fritz Seyferth, Russ Miller, Paul Schmidt, Kevin Kolcheff, Brad Andres.
Back Row: Dennis Morgan, Jeff Long, Jim Herrmann, Bill Harris, Bobby Morrison, Tom Reed, Lloyd Carr, Gary Moeller, Jerry Hanlon, Tirrel Burton, Les Miles, Cam Cameron, Alex Agase, Kevin Kalinich, Randy Fichtner, Dave Garlow, Dennis Blanchard, Charlie Baird.
