TITLE

Note: Flowing ion population from a resonance cavity source

AUTHOR(S)
Gayetsky, Lisa E.; Lynch, Kristina A.
PUB. DATE
April 2011
SOURCE
Review of Scientific Instruments;Apr2011, Vol. 82 Issue 4, p046112
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The experimental low energy plasma for hemispherical analyzers nominal testing thermal plasma facility of Dartmouth College uses a microwave plasma source which generates an ionosphere-like plasma through a two-step process. The plasma is initially generated inside a cylindrical, insulated, resonance cavity. This initial plasma must pass through a sheath in order to enter the main experimental region. This process imparts a significant flow velocity to the ions which has been neglected in previous analysis of this plasma source. We predict the flow energy of the ions to be between 12-15 eV depending on conservation laws and show agreement with experimental results.
ACCESSION #
60283494

 

Related Articles

  • Mass loading in velocity shears. Perez-de-Tejada, H.; Durand-Manterola, H. // Physics of Plasmas;Feb96, Vol. 3 Issue 2, p639 

    Analyzes the motion of contaminant ions picked up by the solar wind within velocity shears. Expression for the ion density in terms of the flow speed across the velocity shear; Enhanced densities in the region where the flow speed is small; Likelihood that the local values may become...

  • Imaging current flow in lobster nerve cord using the acoustoelectric effect. Witte, Russell; Olafsson, Ragnar; Huang, Sheng-Wen; O’Donnell, Matthew // Applied Physics Letters;4/16/2007, Vol. 90 Issue 16, p163902 

    Ultrasound traversing a biologic fluid or tissue generates a local change in electrical conductivity known as the acoustoelectric effect. The authors exploit this interaction to image ionic current injected into the abdominal segment of the lobster nerve cord. A pair of recording electrodes...

  • Generation of dense multicharged ion flows from an ECR plasma confined in a quasi-gas-dynamic magnetic cusp trap. Bokhanov, A. F.; Zorin, V. G.; Izotov, I. V.; Razin, S. V.; Sidorov, A. V.; Skalyga, V. A. // Plasma Physics Reports;May2007, Vol. 33 Issue 5, p347 

    The possibility of generating dense multicharged ion beams with a current density as high as ∼1 A/cm2 from an ECR plasma confined in a quasi-gas-dynamic cusp trap is studied both theoretically and experimentally. The most important advantages of this type of ion source are that the plasma...

  • Statistical-mechanical theory of ultrasonic absorption in molecular liquids. Kobryn, Alexander E.; Hirata, Fumio // Journal of Chemical Physics;1/28/2007, Vol. 126 Issue 4, p044504 

    We present results of the theoretical description of ultrasonic phenomena in molecular liquids. In particular, we are interested in the development of a microscopical, i.e., statistical-mechanical, framework capable of explaining the long living puzzle of excess ultrasonic absorption in liquids....

  • Double layer created by electron cyclotron resonance heating in an inhomogeneously magnetized plasma with high-speed ion flow. Takahashi, K.; Kaneko, T.; Hatakeyama, R. // Physics of Plasmas;Jul2008, Vol. 15 Issue 7, p072108 

    A potential jump, i.e., an electric double layer (DL) is formed near an electron cyclotron resonance (ECR) point when an electron cyclotron wave is injected into an inhomogeneously magnetized plasma with high-speed ion flow. A charge separation is caused by an electron reflection due to...

  • Observation of alpha particle loss from JET plasmas during ion cyclotron resonance frequency heating using a thin foil Faraday cup detector array. Darrow, D. S.; Cecil, F. E.; Kiptily, V.; Fullard, K.; Horton, A.; Murari, A.; JET EFDA Contributors // Review of Scientific Instruments;Oct2010, Vol. 81 Issue 10, p10D330 

    The loss of MeV alpha particles from JET plasmas has been measured with a set of thin foil Faraday cup detectors during third harmonic heating of helium neutral beam ions. Tail temperatures of ∼2 MeV have been observed, with radial scrape off lengths of a few centimeters. Operational...

  • Perturbation theoretical analysis and its application for TM[sub 010]-mode microwave cavity of a... Xu Guochang; Liu Jun // Review of Scientific Instruments;May97, Vol. 68 Issue 5, p1935 

    Discusses the derivation of an analytical expression and a perturbation formula for the cavity resonant frequency dependence of the plasma for cylindrical TM[sub 010]-microwave plasma cavity. Accurate use of the perturbation theory in analyzing the perturbation effect; Resonant frequency shift...

  • Pressure-dependent transition in the mechanism of remote plasma SiNx deposition. Meikle, Scott; Hatanaka, Yoshinori // Applied Physics Letters;8/20/1990, Vol. 57 Issue 8, p762 

    Optical emission properties in remote plasma deposition of SiNx from an N2 electron cyclotron resonance microwave plasma and SiH4 have been investigated over a pressure range of 0.002–0.3 Torr. The deposition process divides into three pressure regions. For p>=0.1 Torr, film deposition...

  • Loading effect of quartz microwave window on SF[sub 6] plasma in an electron cyclotron resonance.... Watts, Andrew J.; Varhue, Walter J. // Applied Physics Letters;8/3/1992, Vol. 61 Issue 5, p549 

    Examines the loading effect of quartz microwave window on SF[sub 6] plasma in an electron cyclotron resonance reactor. Effect of quartz window on silicon dioxide deposition; Reduction of plasma density by quartz window; Comparison of characterization data using a quartz window with and without...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics