Zobrazeno 1 - 10
of 12
pro vyhledávání: '"L. M. Lea"'
Autor:
L M, LEA
Publikováno v:
The New Zealand nursing journal. Kai tiaki. 38
Publikováno v:
Journal of Physics D: Applied Physics. 24:1541-1550
Fluid equations are used to interpret the electron, positive- and negative-ion properties of a bucket source. Assuming an exponential dependence for the electron density in the axial direction, forms for the electric potential and electron temperatur
Publikováno v:
Review of Scientific Instruments. 61:409-411
When a suitable accelerating voltage is applied to extract negative ions from a volume production source, electrons are also extracted. If no means of suppression is utilized, the electron current in a hydrogen plasma would typically be of the order
Publikováno v:
AIP Conference Proceedings.
Results are presented of density and temperature measurements made within a large volume magnetically confined plasma which could be applicable to a plasma neutralizer. rf power at a few megahertz is inductively coupled into an argon plasma by means
Publikováno v:
AIP Conference Proceedings.
This paper presents the results of experimental studies on a number of different ‘‘current carrying wire’’ type first grid electron suppressors: or ‘‘inserts’’, as they shall be called throughout this paper. Extracted negative ion cur
Publikováno v:
AIP Conference Proceedings.
A panel discussion was held to review the papers on simulation of ion sources with emphasis on beam extraction. Problems in calculating electron distribution functions, electron‐molecule collisions and properties distributions of excited molecules
Publikováno v:
AIP Conference Proceedings.
Experiments performed in a volume production negative ion source show that the use of a tent or supercusp magnetic filter leads to a more uniform plasma at the normal extraction plane than that obtained with a dipole filter.For the tent filter geomet
Publikováno v:
Review of Scientific Instruments. 60:539-546
An experimental study on the production of negative ions at a pure barium surface mounted in a multicusp bucket source is presented. The conversion efficiency, i.e., the ratio of the extracted negative‐ion current and the positive‐ion current inc
Publikováno v:
Journal of Physics D: Applied Physics. 18:L53-L57
Ions in an optically pumped mercury vapour plasma, principally by the reaction Hg(63p0)+Hg(63p1) to Hg2++e, have been extracted using a novel device. Initial experimental results show that the ratio of the flux of atomic ions to that of molecular ion
Publikováno v:
Review of Scientific Instruments. 58:223-234
Results are presented on the production of H− ions in a large (55×31×20 cm3) magnetic multipole discharge, which is sufficiently large to act as the plasma generator for a neutral beam injector. H− ion current densities up to 57 mA/cm2 have bee