APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

BROWSE VOLUMES

Year Range: 
Search Issue | RSS Feeds RSS
Next Issue

7 Jan 2008

Volume 92, Issue 1, Articles (01xxxx)

Issue Cover Spotlight Figure

Appl. Phys. Lett. 92, 011101 (2008); http://dx.doi.org/10.1063/1.2828458 (3 pages)

F. Pedaci, S. Barland, E. Caboche, P. Genevet, M. Giudici, J. R. Tredicce, T. Ackemann, A. J. Scroggie, W. J. Firth, G.-L. Oppo, G. Tissoni, and R. Jäger
Enlarge Image | Read More
Return to All Sections
back to top
RSS Feeds

Visual phenomena of surface plasmon polaritons at the dielectric-plasma interface

Xu Xu, Feng Liu, Qianhong Zhou, Bo Liang, Yizi Liang, and Rongqing Liang

Appl. Phys. Lett. 92, 011501 (2008); http://dx.doi.org/10.1063/1.2829591 (3 pages) | Cited 15 times

Online Publication Date: 2 January 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Some interesting experiment phenomena of light patterns that appear in microwave plasma have been investigated. The wavelength of surface plasmon polaritons (SPPs) at the dielectric-plasma interface as the functions of incident wave frequency and plasma density has been calculated. The comparison of the experiment results with the calculating results has been carried out. By experimentally and theoretically analyzing, the phenomena are considered to be caused by the surface wave of SPPs at the interface between Pyrex wall and plasma.
Show PACS
73.20.Mf Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)
71.36.+c Polaritons (including photon-phonon and photon-magnon interactions)
52.25.Mq Dielectric properties
52.70.Gw Radio-frequency and microwave measurements
52.40.Hf Plasma-material interactions; boundary layer effects

Optical Thomson scatter from laser-ablated plumes

A. Delserieys, F. Y. Khattak, C. L. S Lewis, D. Riley, and J. Pedregosa Gutierrez

Appl. Phys. Lett. 92, 011502 (2008); http://dx.doi.org/10.1063/1.2830705 (3 pages) | Cited 5 times

Online Publication Date: 4 January 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We have obtained density and temperature informations on an expanding KrF laser-ablated magnesium plume via optical Thomson scatter with a frequency doubled Nd:YAG laser. The electron temperature was found to decay with the expected Te∝t−1 dependence. However, we have found the electron density to have a time dependence ne∝t−4.95 which can be explained by strong recombination processes. We also observed atomic Raman satellites originating from transitions between the different angular momentum levels of the metastable 3P0 term in Mg I.
Show PACS
52.38.Bv Rayleigh scattering; stimulated Brillouin and Raman scattering
52.38.Mf Laser ablation

Microplasma generation in a sealed microfluidic glass chip using a water electrode

Kyoung-Woo Jo, Man-Geun Kim, Sang-Mo Shin, and Jong-Hyun Lee

Appl. Phys. Lett. 92, 011503 (2008); http://dx.doi.org/10.1063/1.2832371 (3 pages) | Cited 8 times

Online Publication Date: 7 January 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
A microplasma was generated in a sealed microfluidic glass chip for the application of the miniaturized chemical detection system, especially for water contaminants. The behavior of a microbubble as well as a microplasma was observed using a 1% NaCl solution with no metal contact in a sealed glass microchannel. A microplasma formed by water contents excluding air or inert gas showed clear emission spectrum in UV, visible, and near IR range. The detection of lead was demonstrated by measuring the intensity of the Pb emission line (at 406 nm) with respect to the concentration.
Show PACS
52.50.-b Plasma production and heating
85.85.+j Micro- and nano-electromechanical systems (MEMS/NEMS) and devices
52.70.Kz Optical (ultraviolet, visible, infrared) measurements
52.75.-d Plasma devices
82.80.-d Chemical analysis and related physical methods of analysis

Active steering of laser-accelerated ion beams

O. Lundh, Y. Glinec, C. Homann, F. Lindau, A. Persson, C.-G. Wahlström, D. C. Carroll, and P. McKenna

Appl. Phys. Lett. 92, 011504 (2008); http://dx.doi.org/10.1063/1.2832765 (3 pages) | Cited 2 times

Online Publication Date: 10 January 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
A technique for optical control of the spatial distribution of laser-accelerated ion beams is presented. An ultrashort laser pulse, tightly focused to relativistic intensities on a thin foil target, drives a beam of MeV ions. An auxiliary, nanosecond laser pulse drives a shock and locally deforms the initially flat target prior to the main pulse interaction. By changing the properties of the shock-driving laser pulse, the normal direction of the ion emitting surface is locally manipulated and the emission direction is thereby controlled. In the future, this method could be used to achieve dynamic control of the ion beam divergence.
Show PACS
61.80.Jh Ion radiation effects
79.20.Rf Atomic, molecular, and ion beam impact and interactions with surfaces
61.80.Ba Ultraviolet, visible, and infrared radiation effects (including laser radiation)
42.65.Re Ultrafast processes; optical pulse generation and pulse compression

Cathode spot motion in an oblique magnetic field

Allen L. Garner

Appl. Phys. Lett. 92, 011505 (2008); http://dx.doi.org/10.1063/1.2832769 (3 pages)

Online Publication Date: 10 January 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Improper control of cathode spot (CS) motion can lead to uneven cathode erosion and shorter life, so magnetic fields are often used to direct CS motion. Here, we incorporate an axial magnetic field component into a model for CS retrograde motion based on the difference between the plasma kinetic and self-magnetic pressures. We consider the motion of the positive space charge associated with retrograde motion to generate a current perpendicular to the axial magnetic field, introducing an additional component to CS motion. The predicted angle of CS motion agrees well with the experimental data and a prior model based on electron backflow to the cathode surface.
Show PACS
52.30.Cv Magnetohydrodynamics (including electron magnetohydrodynamics)
52.25.Dg Plasma kinetic equations
52.25.Fi Transport properties

Order of magnitude enhancement in x-ray yield at low pressure deuterium-krypton admixture operation in miniature plasma focus device

Rishi Verma, P. Lee, S. V. Springham, T. L. Tan, R. S. Rawat, and M. Krishnan

Appl. Phys. Lett. 92, 011506 (2008); http://dx.doi.org/10.1063/1.2830001 (3 pages) | Cited 8 times

Online Publication Date: 10 January 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
In a 200 J fast miniature plasma focus device about 17- and 10-fold increase in x-ray yield in spectral ranges of 0.9–1.6 keV and 3.2–7.7 keV, respectively, have been obtained with deuterium-krypton (D2–Kr) admixture at operating pressures of ⩽ 0.4 mbar. In the pressure range of >0.4–1.4 mbar, about twofold magnification in average x-ray yield along with broadening of optimum pressure range in both spectral ranges were obtained for D2–Kr admixtures. An order of magnitude enhancement in x-ray yields at low pressures for admixture operation will help in achieving high performance device efficiency for lithography and micromachining applications.
Show PACS
52.58.Lq Z-pinches, plasma focus, and other pinch devices
85.40.Hp Lithography, masks and pattern transfer
81.20.Wk Machining, milling
52.40.Db Electromagnetic (nonlaser) radiation interactions with plasma

Memory effect in argon in the presence of vacuum and gas electrical breakdown mechanisms

Momcilo M. Pejovic and Milic M. Pejovic

Appl. Phys. Lett. 92, 011507 (2008); http://dx.doi.org/10.1063/1.2831908 (2 pages)

Online Publication Date: 11 January 2008

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Vacuum and gas electrical breakdown mechanisms in argon at 4 mbar pressure for different interelectrode gaps were analyzed. The analysis was performed on the basis of measured Paschen’s curve, the estimated values of electrical field E in interelectrode gap d, and the estimated mean free path of electrons λ, as well as monitored of memory curves. It was shown that for d = 0.1 mm both breakdown mechanisms appear, while for d>0.1 mm gas electrical breakdown mechanism is dominant.
Show PACS
52.80.Vp Discharge in vacuum
72.20.Jv Charge carriers: generation, recombination, lifetime, and trapping
79.20.Hx Electron impact: secondary emission
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close